Thermoresponsive bilayer hydrogel with switchable bending directions as soft actuator
Shaping-deforming thermoresponsive hydrogel actuators have showed great potential toward comprehensive application in artificial intelligence including soft robots and advanced electronics. Despite research progress in designing hydrogels with complexed molecular and hierarchy structures, integratin...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Zhang, Jiajie [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2022transfer abstract |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Functional outcomes at 12 months for patients with traumatic brain injury, intracerebral haemorrhage and subarachnoid haemorrhage treated in an Australian neurocritical care unit: A prospective cohort study - Fitzgerald, Emily ELSEVIER, 2020, the international journal for the science and technology of polymers, Oxford |
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| Übergeordnetes Werk: |
volume:253 ; year:2022 ; day:22 ; month:06 ; pages:0 |
| Links: |
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| DOI / URN: |
10.1016/j.polymer.2022.124998 |
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| 245 | 1 | 0 | |a Thermoresponsive bilayer hydrogel with switchable bending directions as soft actuator |
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| 520 | |a Shaping-deforming thermoresponsive hydrogel actuators have showed great potential toward comprehensive application in artificial intelligence including soft robots and advanced electronics. Despite research progress in designing hydrogels with complexed molecular and hierarchy structures, integrating feasible manufacturing process and switchable shape transformation remained a challenge. Herein, we reported a straightforward strategy to develop a novel actuator by asymmetric composed bilayer hydrogel. Poly(N-isopropylacrylamide) (PNIPAM) and poly(vinyl alcohol) PVA have been applied to fabricate PNIPAM/(PNIPAM/PVA) bilayer hydrogel in which water shrinkage speed could be tuned by PVA crystallinity. Interpenetration of PVA into PNIPAM network promised a faster water losing speed than PNIPAM while a slowed down water diffusion was observed when PVA crystalized during freezing/thawing cycle. Consequently, the hydrogel exhibits two opposite bending behavior under the same temperature-driven process. In addition, the hydrogen bond interaction between PVA and PNIPAM endows the bilayer hydrogel with excellent interfacial adhesion, which prevents delamination after several freezing/thawing cycles and shrinkage/swelling cycles. Approaches in this study points to a future direction in designing and fabricating intelligent materials for several scenarios including soft robotics and biomedical devices. | ||
| 520 | |a Shaping-deforming thermoresponsive hydrogel actuators have showed great potential toward comprehensive application in artificial intelligence including soft robots and advanced electronics. Despite research progress in designing hydrogels with complexed molecular and hierarchy structures, integrating feasible manufacturing process and switchable shape transformation remained a challenge. Herein, we reported a straightforward strategy to develop a novel actuator by asymmetric composed bilayer hydrogel. Poly(N-isopropylacrylamide) (PNIPAM) and poly(vinyl alcohol) PVA have been applied to fabricate PNIPAM/(PNIPAM/PVA) bilayer hydrogel in which water shrinkage speed could be tuned by PVA crystallinity. Interpenetration of PVA into PNIPAM network promised a faster water losing speed than PNIPAM while a slowed down water diffusion was observed when PVA crystalized during freezing/thawing cycle. Consequently, the hydrogel exhibits two opposite bending behavior under the same temperature-driven process. In addition, the hydrogen bond interaction between PVA and PNIPAM endows the bilayer hydrogel with excellent interfacial adhesion, which prevents delamination after several freezing/thawing cycles and shrinkage/swelling cycles. Approaches in this study points to a future direction in designing and fabricating intelligent materials for several scenarios including soft robotics and biomedical devices. | ||
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| 700 | 1 | |a Wang, Lian |4 oth | |
| 700 | 1 | |a Li, Yongjin |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Elsevier Science |a Fitzgerald, Emily ELSEVIER |t Functional outcomes at 12 months for patients with traumatic brain injury, intracerebral haemorrhage and subarachnoid haemorrhage treated in an Australian neurocritical care unit: A prospective cohort study |d 2020 |d the international journal for the science and technology of polymers |g Oxford |w (DE-627)ELV005093368 |
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10.1016/j.polymer.2022.124998 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001802.pica (DE-627)ELV058058451 (ELSEVIER)S0032-3861(22)00486-4 DE-627 ger DE-627 rakwb eng 610 VZ 44.63 bkl 44.69 bkl Zhang, Jiajie verfasserin aut Thermoresponsive bilayer hydrogel with switchable bending directions as soft actuator 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Shaping-deforming thermoresponsive hydrogel actuators have showed great potential toward comprehensive application in artificial intelligence including soft robots and advanced electronics. Despite research progress in designing hydrogels with complexed molecular and hierarchy structures, integrating feasible manufacturing process and switchable shape transformation remained a challenge. Herein, we reported a straightforward strategy to develop a novel actuator by asymmetric composed bilayer hydrogel. Poly(N-isopropylacrylamide) (PNIPAM) and poly(vinyl alcohol) PVA have been applied to fabricate PNIPAM/(PNIPAM/PVA) bilayer hydrogel in which water shrinkage speed could be tuned by PVA crystallinity. Interpenetration of PVA into PNIPAM network promised a faster water losing speed than PNIPAM while a slowed down water diffusion was observed when PVA crystalized during freezing/thawing cycle. Consequently, the hydrogel exhibits two opposite bending behavior under the same temperature-driven process. In addition, the hydrogen bond interaction between PVA and PNIPAM endows the bilayer hydrogel with excellent interfacial adhesion, which prevents delamination after several freezing/thawing cycles and shrinkage/swelling cycles. Approaches in this study points to a future direction in designing and fabricating intelligent materials for several scenarios including soft robotics and biomedical devices. Shaping-deforming thermoresponsive hydrogel actuators have showed great potential toward comprehensive application in artificial intelligence including soft robots and advanced electronics. Despite research progress in designing hydrogels with complexed molecular and hierarchy structures, integrating feasible manufacturing process and switchable shape transformation remained a challenge. Herein, we reported a straightforward strategy to develop a novel actuator by asymmetric composed bilayer hydrogel. Poly(N-isopropylacrylamide) (PNIPAM) and poly(vinyl alcohol) PVA have been applied to fabricate PNIPAM/(PNIPAM/PVA) bilayer hydrogel in which water shrinkage speed could be tuned by PVA crystallinity. Interpenetration of PVA into PNIPAM network promised a faster water losing speed than PNIPAM while a slowed down water diffusion was observed when PVA crystalized during freezing/thawing cycle. Consequently, the hydrogel exhibits two opposite bending behavior under the same temperature-driven process. In addition, the hydrogen bond interaction between PVA and PNIPAM endows the bilayer hydrogel with excellent interfacial adhesion, which prevents delamination after several freezing/thawing cycles and shrinkage/swelling cycles. Approaches in this study points to a future direction in designing and fabricating intelligent materials for several scenarios including soft robotics and biomedical devices. Hydrogel Elsevier LCST Elsevier Soft actuator Elsevier Zheng, Letian oth Wu, Zhujian oth Wang, Lian oth Li, Yongjin oth Enthalten in Elsevier Science Fitzgerald, Emily ELSEVIER Functional outcomes at 12 months for patients with traumatic brain injury, intracerebral haemorrhage and subarachnoid haemorrhage treated in an Australian neurocritical care unit: A prospective cohort study 2020 the international journal for the science and technology of polymers Oxford (DE-627)ELV005093368 volume:253 year:2022 day:22 month:06 pages:0 https://doi.org/10.1016/j.polymer.2022.124998 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.63 Krankenpflege VZ 44.69 Intensivmedizin VZ AR 253 2022 22 0622 0 |
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10.1016/j.polymer.2022.124998 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001802.pica (DE-627)ELV058058451 (ELSEVIER)S0032-3861(22)00486-4 DE-627 ger DE-627 rakwb eng 610 VZ 44.63 bkl 44.69 bkl Zhang, Jiajie verfasserin aut Thermoresponsive bilayer hydrogel with switchable bending directions as soft actuator 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Shaping-deforming thermoresponsive hydrogel actuators have showed great potential toward comprehensive application in artificial intelligence including soft robots and advanced electronics. Despite research progress in designing hydrogels with complexed molecular and hierarchy structures, integrating feasible manufacturing process and switchable shape transformation remained a challenge. Herein, we reported a straightforward strategy to develop a novel actuator by asymmetric composed bilayer hydrogel. Poly(N-isopropylacrylamide) (PNIPAM) and poly(vinyl alcohol) PVA have been applied to fabricate PNIPAM/(PNIPAM/PVA) bilayer hydrogel in which water shrinkage speed could be tuned by PVA crystallinity. Interpenetration of PVA into PNIPAM network promised a faster water losing speed than PNIPAM while a slowed down water diffusion was observed when PVA crystalized during freezing/thawing cycle. Consequently, the hydrogel exhibits two opposite bending behavior under the same temperature-driven process. In addition, the hydrogen bond interaction between PVA and PNIPAM endows the bilayer hydrogel with excellent interfacial adhesion, which prevents delamination after several freezing/thawing cycles and shrinkage/swelling cycles. Approaches in this study points to a future direction in designing and fabricating intelligent materials for several scenarios including soft robotics and biomedical devices. Shaping-deforming thermoresponsive hydrogel actuators have showed great potential toward comprehensive application in artificial intelligence including soft robots and advanced electronics. Despite research progress in designing hydrogels with complexed molecular and hierarchy structures, integrating feasible manufacturing process and switchable shape transformation remained a challenge. Herein, we reported a straightforward strategy to develop a novel actuator by asymmetric composed bilayer hydrogel. Poly(N-isopropylacrylamide) (PNIPAM) and poly(vinyl alcohol) PVA have been applied to fabricate PNIPAM/(PNIPAM/PVA) bilayer hydrogel in which water shrinkage speed could be tuned by PVA crystallinity. Interpenetration of PVA into PNIPAM network promised a faster water losing speed than PNIPAM while a slowed down water diffusion was observed when PVA crystalized during freezing/thawing cycle. Consequently, the hydrogel exhibits two opposite bending behavior under the same temperature-driven process. In addition, the hydrogen bond interaction between PVA and PNIPAM endows the bilayer hydrogel with excellent interfacial adhesion, which prevents delamination after several freezing/thawing cycles and shrinkage/swelling cycles. Approaches in this study points to a future direction in designing and fabricating intelligent materials for several scenarios including soft robotics and biomedical devices. Hydrogel Elsevier LCST Elsevier Soft actuator Elsevier Zheng, Letian oth Wu, Zhujian oth Wang, Lian oth Li, Yongjin oth Enthalten in Elsevier Science Fitzgerald, Emily ELSEVIER Functional outcomes at 12 months for patients with traumatic brain injury, intracerebral haemorrhage and subarachnoid haemorrhage treated in an Australian neurocritical care unit: A prospective cohort study 2020 the international journal for the science and technology of polymers Oxford (DE-627)ELV005093368 volume:253 year:2022 day:22 month:06 pages:0 https://doi.org/10.1016/j.polymer.2022.124998 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.63 Krankenpflege VZ 44.69 Intensivmedizin VZ AR 253 2022 22 0622 0 |
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10.1016/j.polymer.2022.124998 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001802.pica (DE-627)ELV058058451 (ELSEVIER)S0032-3861(22)00486-4 DE-627 ger DE-627 rakwb eng 610 VZ 44.63 bkl 44.69 bkl Zhang, Jiajie verfasserin aut Thermoresponsive bilayer hydrogel with switchable bending directions as soft actuator 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Shaping-deforming thermoresponsive hydrogel actuators have showed great potential toward comprehensive application in artificial intelligence including soft robots and advanced electronics. Despite research progress in designing hydrogels with complexed molecular and hierarchy structures, integrating feasible manufacturing process and switchable shape transformation remained a challenge. Herein, we reported a straightforward strategy to develop a novel actuator by asymmetric composed bilayer hydrogel. Poly(N-isopropylacrylamide) (PNIPAM) and poly(vinyl alcohol) PVA have been applied to fabricate PNIPAM/(PNIPAM/PVA) bilayer hydrogel in which water shrinkage speed could be tuned by PVA crystallinity. Interpenetration of PVA into PNIPAM network promised a faster water losing speed than PNIPAM while a slowed down water diffusion was observed when PVA crystalized during freezing/thawing cycle. Consequently, the hydrogel exhibits two opposite bending behavior under the same temperature-driven process. In addition, the hydrogen bond interaction between PVA and PNIPAM endows the bilayer hydrogel with excellent interfacial adhesion, which prevents delamination after several freezing/thawing cycles and shrinkage/swelling cycles. Approaches in this study points to a future direction in designing and fabricating intelligent materials for several scenarios including soft robotics and biomedical devices. Shaping-deforming thermoresponsive hydrogel actuators have showed great potential toward comprehensive application in artificial intelligence including soft robots and advanced electronics. Despite research progress in designing hydrogels with complexed molecular and hierarchy structures, integrating feasible manufacturing process and switchable shape transformation remained a challenge. Herein, we reported a straightforward strategy to develop a novel actuator by asymmetric composed bilayer hydrogel. Poly(N-isopropylacrylamide) (PNIPAM) and poly(vinyl alcohol) PVA have been applied to fabricate PNIPAM/(PNIPAM/PVA) bilayer hydrogel in which water shrinkage speed could be tuned by PVA crystallinity. Interpenetration of PVA into PNIPAM network promised a faster water losing speed than PNIPAM while a slowed down water diffusion was observed when PVA crystalized during freezing/thawing cycle. Consequently, the hydrogel exhibits two opposite bending behavior under the same temperature-driven process. In addition, the hydrogen bond interaction between PVA and PNIPAM endows the bilayer hydrogel with excellent interfacial adhesion, which prevents delamination after several freezing/thawing cycles and shrinkage/swelling cycles. Approaches in this study points to a future direction in designing and fabricating intelligent materials for several scenarios including soft robotics and biomedical devices. Hydrogel Elsevier LCST Elsevier Soft actuator Elsevier Zheng, Letian oth Wu, Zhujian oth Wang, Lian oth Li, Yongjin oth Enthalten in Elsevier Science Fitzgerald, Emily ELSEVIER Functional outcomes at 12 months for patients with traumatic brain injury, intracerebral haemorrhage and subarachnoid haemorrhage treated in an Australian neurocritical care unit: A prospective cohort study 2020 the international journal for the science and technology of polymers Oxford (DE-627)ELV005093368 volume:253 year:2022 day:22 month:06 pages:0 https://doi.org/10.1016/j.polymer.2022.124998 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.63 Krankenpflege VZ 44.69 Intensivmedizin VZ AR 253 2022 22 0622 0 |
| allfieldsGer |
10.1016/j.polymer.2022.124998 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001802.pica (DE-627)ELV058058451 (ELSEVIER)S0032-3861(22)00486-4 DE-627 ger DE-627 rakwb eng 610 VZ 44.63 bkl 44.69 bkl Zhang, Jiajie verfasserin aut Thermoresponsive bilayer hydrogel with switchable bending directions as soft actuator 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Shaping-deforming thermoresponsive hydrogel actuators have showed great potential toward comprehensive application in artificial intelligence including soft robots and advanced electronics. Despite research progress in designing hydrogels with complexed molecular and hierarchy structures, integrating feasible manufacturing process and switchable shape transformation remained a challenge. Herein, we reported a straightforward strategy to develop a novel actuator by asymmetric composed bilayer hydrogel. Poly(N-isopropylacrylamide) (PNIPAM) and poly(vinyl alcohol) PVA have been applied to fabricate PNIPAM/(PNIPAM/PVA) bilayer hydrogel in which water shrinkage speed could be tuned by PVA crystallinity. Interpenetration of PVA into PNIPAM network promised a faster water losing speed than PNIPAM while a slowed down water diffusion was observed when PVA crystalized during freezing/thawing cycle. Consequently, the hydrogel exhibits two opposite bending behavior under the same temperature-driven process. In addition, the hydrogen bond interaction between PVA and PNIPAM endows the bilayer hydrogel with excellent interfacial adhesion, which prevents delamination after several freezing/thawing cycles and shrinkage/swelling cycles. Approaches in this study points to a future direction in designing and fabricating intelligent materials for several scenarios including soft robotics and biomedical devices. Shaping-deforming thermoresponsive hydrogel actuators have showed great potential toward comprehensive application in artificial intelligence including soft robots and advanced electronics. Despite research progress in designing hydrogels with complexed molecular and hierarchy structures, integrating feasible manufacturing process and switchable shape transformation remained a challenge. Herein, we reported a straightforward strategy to develop a novel actuator by asymmetric composed bilayer hydrogel. Poly(N-isopropylacrylamide) (PNIPAM) and poly(vinyl alcohol) PVA have been applied to fabricate PNIPAM/(PNIPAM/PVA) bilayer hydrogel in which water shrinkage speed could be tuned by PVA crystallinity. Interpenetration of PVA into PNIPAM network promised a faster water losing speed than PNIPAM while a slowed down water diffusion was observed when PVA crystalized during freezing/thawing cycle. Consequently, the hydrogel exhibits two opposite bending behavior under the same temperature-driven process. In addition, the hydrogen bond interaction between PVA and PNIPAM endows the bilayer hydrogel with excellent interfacial adhesion, which prevents delamination after several freezing/thawing cycles and shrinkage/swelling cycles. Approaches in this study points to a future direction in designing and fabricating intelligent materials for several scenarios including soft robotics and biomedical devices. Hydrogel Elsevier LCST Elsevier Soft actuator Elsevier Zheng, Letian oth Wu, Zhujian oth Wang, Lian oth Li, Yongjin oth Enthalten in Elsevier Science Fitzgerald, Emily ELSEVIER Functional outcomes at 12 months for patients with traumatic brain injury, intracerebral haemorrhage and subarachnoid haemorrhage treated in an Australian neurocritical care unit: A prospective cohort study 2020 the international journal for the science and technology of polymers Oxford (DE-627)ELV005093368 volume:253 year:2022 day:22 month:06 pages:0 https://doi.org/10.1016/j.polymer.2022.124998 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.63 Krankenpflege VZ 44.69 Intensivmedizin VZ AR 253 2022 22 0622 0 |
| allfieldsSound |
10.1016/j.polymer.2022.124998 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001802.pica (DE-627)ELV058058451 (ELSEVIER)S0032-3861(22)00486-4 DE-627 ger DE-627 rakwb eng 610 VZ 44.63 bkl 44.69 bkl Zhang, Jiajie verfasserin aut Thermoresponsive bilayer hydrogel with switchable bending directions as soft actuator 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Shaping-deforming thermoresponsive hydrogel actuators have showed great potential toward comprehensive application in artificial intelligence including soft robots and advanced electronics. Despite research progress in designing hydrogels with complexed molecular and hierarchy structures, integrating feasible manufacturing process and switchable shape transformation remained a challenge. Herein, we reported a straightforward strategy to develop a novel actuator by asymmetric composed bilayer hydrogel. Poly(N-isopropylacrylamide) (PNIPAM) and poly(vinyl alcohol) PVA have been applied to fabricate PNIPAM/(PNIPAM/PVA) bilayer hydrogel in which water shrinkage speed could be tuned by PVA crystallinity. Interpenetration of PVA into PNIPAM network promised a faster water losing speed than PNIPAM while a slowed down water diffusion was observed when PVA crystalized during freezing/thawing cycle. Consequently, the hydrogel exhibits two opposite bending behavior under the same temperature-driven process. In addition, the hydrogen bond interaction between PVA and PNIPAM endows the bilayer hydrogel with excellent interfacial adhesion, which prevents delamination after several freezing/thawing cycles and shrinkage/swelling cycles. Approaches in this study points to a future direction in designing and fabricating intelligent materials for several scenarios including soft robotics and biomedical devices. Shaping-deforming thermoresponsive hydrogel actuators have showed great potential toward comprehensive application in artificial intelligence including soft robots and advanced electronics. Despite research progress in designing hydrogels with complexed molecular and hierarchy structures, integrating feasible manufacturing process and switchable shape transformation remained a challenge. Herein, we reported a straightforward strategy to develop a novel actuator by asymmetric composed bilayer hydrogel. Poly(N-isopropylacrylamide) (PNIPAM) and poly(vinyl alcohol) PVA have been applied to fabricate PNIPAM/(PNIPAM/PVA) bilayer hydrogel in which water shrinkage speed could be tuned by PVA crystallinity. Interpenetration of PVA into PNIPAM network promised a faster water losing speed than PNIPAM while a slowed down water diffusion was observed when PVA crystalized during freezing/thawing cycle. Consequently, the hydrogel exhibits two opposite bending behavior under the same temperature-driven process. In addition, the hydrogen bond interaction between PVA and PNIPAM endows the bilayer hydrogel with excellent interfacial adhesion, which prevents delamination after several freezing/thawing cycles and shrinkage/swelling cycles. Approaches in this study points to a future direction in designing and fabricating intelligent materials for several scenarios including soft robotics and biomedical devices. Hydrogel Elsevier LCST Elsevier Soft actuator Elsevier Zheng, Letian oth Wu, Zhujian oth Wang, Lian oth Li, Yongjin oth Enthalten in Elsevier Science Fitzgerald, Emily ELSEVIER Functional outcomes at 12 months for patients with traumatic brain injury, intracerebral haemorrhage and subarachnoid haemorrhage treated in an Australian neurocritical care unit: A prospective cohort study 2020 the international journal for the science and technology of polymers Oxford (DE-627)ELV005093368 volume:253 year:2022 day:22 month:06 pages:0 https://doi.org/10.1016/j.polymer.2022.124998 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.63 Krankenpflege VZ 44.69 Intensivmedizin VZ AR 253 2022 22 0622 0 |
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Enthalten in Functional outcomes at 12 months for patients with traumatic brain injury, intracerebral haemorrhage and subarachnoid haemorrhage treated in an Australian neurocritical care unit: A prospective cohort study Oxford volume:253 year:2022 day:22 month:06 pages:0 |
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Shaping-deforming thermoresponsive hydrogel actuators have showed great potential toward comprehensive application in artificial intelligence including soft robots and advanced electronics. Despite research progress in designing hydrogels with complexed molecular and hierarchy structures, integrating feasible manufacturing process and switchable shape transformation remained a challenge. Herein, we reported a straightforward strategy to develop a novel actuator by asymmetric composed bilayer hydrogel. Poly(N-isopropylacrylamide) (PNIPAM) and poly(vinyl alcohol) PVA have been applied to fabricate PNIPAM/(PNIPAM/PVA) bilayer hydrogel in which water shrinkage speed could be tuned by PVA crystallinity. Interpenetration of PVA into PNIPAM network promised a faster water losing speed than PNIPAM while a slowed down water diffusion was observed when PVA crystalized during freezing/thawing cycle. Consequently, the hydrogel exhibits two opposite bending behavior under the same temperature-driven process. In addition, the hydrogen bond interaction between PVA and PNIPAM endows the bilayer hydrogel with excellent interfacial adhesion, which prevents delamination after several freezing/thawing cycles and shrinkage/swelling cycles. Approaches in this study points to a future direction in designing and fabricating intelligent materials for several scenarios including soft robotics and biomedical devices. |
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Shaping-deforming thermoresponsive hydrogel actuators have showed great potential toward comprehensive application in artificial intelligence including soft robots and advanced electronics. Despite research progress in designing hydrogels with complexed molecular and hierarchy structures, integrating feasible manufacturing process and switchable shape transformation remained a challenge. Herein, we reported a straightforward strategy to develop a novel actuator by asymmetric composed bilayer hydrogel. Poly(N-isopropylacrylamide) (PNIPAM) and poly(vinyl alcohol) PVA have been applied to fabricate PNIPAM/(PNIPAM/PVA) bilayer hydrogel in which water shrinkage speed could be tuned by PVA crystallinity. Interpenetration of PVA into PNIPAM network promised a faster water losing speed than PNIPAM while a slowed down water diffusion was observed when PVA crystalized during freezing/thawing cycle. Consequently, the hydrogel exhibits two opposite bending behavior under the same temperature-driven process. In addition, the hydrogen bond interaction between PVA and PNIPAM endows the bilayer hydrogel with excellent interfacial adhesion, which prevents delamination after several freezing/thawing cycles and shrinkage/swelling cycles. Approaches in this study points to a future direction in designing and fabricating intelligent materials for several scenarios including soft robotics and biomedical devices. |
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Shaping-deforming thermoresponsive hydrogel actuators have showed great potential toward comprehensive application in artificial intelligence including soft robots and advanced electronics. Despite research progress in designing hydrogels with complexed molecular and hierarchy structures, integrating feasible manufacturing process and switchable shape transformation remained a challenge. Herein, we reported a straightforward strategy to develop a novel actuator by asymmetric composed bilayer hydrogel. Poly(N-isopropylacrylamide) (PNIPAM) and poly(vinyl alcohol) PVA have been applied to fabricate PNIPAM/(PNIPAM/PVA) bilayer hydrogel in which water shrinkage speed could be tuned by PVA crystallinity. Interpenetration of PVA into PNIPAM network promised a faster water losing speed than PNIPAM while a slowed down water diffusion was observed when PVA crystalized during freezing/thawing cycle. Consequently, the hydrogel exhibits two opposite bending behavior under the same temperature-driven process. In addition, the hydrogen bond interaction between PVA and PNIPAM endows the bilayer hydrogel with excellent interfacial adhesion, which prevents delamination after several freezing/thawing cycles and shrinkage/swelling cycles. Approaches in this study points to a future direction in designing and fabricating intelligent materials for several scenarios including soft robotics and biomedical devices. |
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