Characterization of critical gel state of polyamides by viscoelastic, thermal, and IR measurements
Abstract We examined the liquid-solid transition for polyamides (PA) 6, 66, and 610 by the Chambon-Winter method under cooling. The polyamides exhibited the transition via the critical gel, for which the critical exponent and the stiffness were consistent with those reported under the isothermal mea...
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| Autor*in: |
Hirayama, Takaya [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2019 |
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| Schlagwörter: |
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| Anmerkung: |
© Springer-Verlag GmbH Germany, part of Springer Nature 2019 |
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| Übergeordnetes Werk: |
Enthalten in: Rheologica acta - Springer Berlin Heidelberg, 1961, 58(2019), 5 vom: 22. März, Seite 281-290 |
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| Übergeordnetes Werk: |
volume:58 ; year:2019 ; number:5 ; day:22 ; month:03 ; pages:281-290 |
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10.1007/s00397-019-01136-0 |
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| 520 | |a Abstract We examined the liquid-solid transition for polyamides (PA) 6, 66, and 610 by the Chambon-Winter method under cooling. The polyamides exhibited the transition via the critical gel, for which the critical exponent and the stiffness were consistent with those reported under the isothermal measurements for the other polymers. The DSC measurements showed that, for a few materials, the crystallinity at the gelation φgel was very small. This result implies that the hydrogen bonding partially stabilizes the critical gel of such polyamides. The FT-IR measurements demonstrated that the hydrogen bonding was formed cooperatively around the gelation temperature. However, we also found that with increasing the molecular weight, the gelation temperature decreased and φgel increased for PA6. Besides, φgel was smaller for PA66 and PA610 than that for PA6. The mechanism is unknown for these results that locate in the opposite side to the suggested role of hydrogen bonding. | ||
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10.1007/s00397-019-01136-0 doi (DE-627)OLC2056019884 (DE-He213)s00397-019-01136-0-p DE-627 ger DE-627 rakwb eng 540 660 VZ 530 VZ Hirayama, Takaya verfasserin aut Characterization of critical gel state of polyamides by viscoelastic, thermal, and IR measurements 2019 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag GmbH Germany, part of Springer Nature 2019 Abstract We examined the liquid-solid transition for polyamides (PA) 6, 66, and 610 by the Chambon-Winter method under cooling. The polyamides exhibited the transition via the critical gel, for which the critical exponent and the stiffness were consistent with those reported under the isothermal measurements for the other polymers. The DSC measurements showed that, for a few materials, the crystallinity at the gelation φgel was very small. This result implies that the hydrogen bonding partially stabilizes the critical gel of such polyamides. The FT-IR measurements demonstrated that the hydrogen bonding was formed cooperatively around the gelation temperature. However, we also found that with increasing the molecular weight, the gelation temperature decreased and φgel increased for PA6. Besides, φgel was smaller for PA66 and PA610 than that for PA6. The mechanism is unknown for these results that locate in the opposite side to the suggested role of hydrogen bonding. Viscoelasticity Gelation Rheology Semi-crystalline polymers Uneyama, Takashi aut Masubuchi, Yuichi aut Enthalten in Rheologica acta Springer Berlin Heidelberg, 1961 58(2019), 5 vom: 22. März, Seite 281-290 (DE-627)129512052 (DE-600)210407-6 (DE-576)014919613 0035-4511 nnns volume:58 year:2019 number:5 day:22 month:03 pages:281-290 https://doi.org/10.1007/s00397-019-01136-0 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OPC-GEO SSG-OPC-GGO GBV_ILN_40 GBV_ILN_70 GBV_ILN_2018 GBV_ILN_4277 AR 58 2019 5 22 03 281-290 |
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10.1007/s00397-019-01136-0 doi (DE-627)OLC2056019884 (DE-He213)s00397-019-01136-0-p DE-627 ger DE-627 rakwb eng 540 660 VZ 530 VZ Hirayama, Takaya verfasserin aut Characterization of critical gel state of polyamides by viscoelastic, thermal, and IR measurements 2019 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag GmbH Germany, part of Springer Nature 2019 Abstract We examined the liquid-solid transition for polyamides (PA) 6, 66, and 610 by the Chambon-Winter method under cooling. The polyamides exhibited the transition via the critical gel, for which the critical exponent and the stiffness were consistent with those reported under the isothermal measurements for the other polymers. The DSC measurements showed that, for a few materials, the crystallinity at the gelation φgel was very small. This result implies that the hydrogen bonding partially stabilizes the critical gel of such polyamides. The FT-IR measurements demonstrated that the hydrogen bonding was formed cooperatively around the gelation temperature. However, we also found that with increasing the molecular weight, the gelation temperature decreased and φgel increased for PA6. Besides, φgel was smaller for PA66 and PA610 than that for PA6. The mechanism is unknown for these results that locate in the opposite side to the suggested role of hydrogen bonding. Viscoelasticity Gelation Rheology Semi-crystalline polymers Uneyama, Takashi aut Masubuchi, Yuichi aut Enthalten in Rheologica acta Springer Berlin Heidelberg, 1961 58(2019), 5 vom: 22. März, Seite 281-290 (DE-627)129512052 (DE-600)210407-6 (DE-576)014919613 0035-4511 nnns volume:58 year:2019 number:5 day:22 month:03 pages:281-290 https://doi.org/10.1007/s00397-019-01136-0 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OPC-GEO SSG-OPC-GGO GBV_ILN_40 GBV_ILN_70 GBV_ILN_2018 GBV_ILN_4277 AR 58 2019 5 22 03 281-290 |
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10.1007/s00397-019-01136-0 doi (DE-627)OLC2056019884 (DE-He213)s00397-019-01136-0-p DE-627 ger DE-627 rakwb eng 540 660 VZ 530 VZ Hirayama, Takaya verfasserin aut Characterization of critical gel state of polyamides by viscoelastic, thermal, and IR measurements 2019 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag GmbH Germany, part of Springer Nature 2019 Abstract We examined the liquid-solid transition for polyamides (PA) 6, 66, and 610 by the Chambon-Winter method under cooling. The polyamides exhibited the transition via the critical gel, for which the critical exponent and the stiffness were consistent with those reported under the isothermal measurements for the other polymers. The DSC measurements showed that, for a few materials, the crystallinity at the gelation φgel was very small. This result implies that the hydrogen bonding partially stabilizes the critical gel of such polyamides. The FT-IR measurements demonstrated that the hydrogen bonding was formed cooperatively around the gelation temperature. However, we also found that with increasing the molecular weight, the gelation temperature decreased and φgel increased for PA6. Besides, φgel was smaller for PA66 and PA610 than that for PA6. The mechanism is unknown for these results that locate in the opposite side to the suggested role of hydrogen bonding. Viscoelasticity Gelation Rheology Semi-crystalline polymers Uneyama, Takashi aut Masubuchi, Yuichi aut Enthalten in Rheologica acta Springer Berlin Heidelberg, 1961 58(2019), 5 vom: 22. März, Seite 281-290 (DE-627)129512052 (DE-600)210407-6 (DE-576)014919613 0035-4511 nnns volume:58 year:2019 number:5 day:22 month:03 pages:281-290 https://doi.org/10.1007/s00397-019-01136-0 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OPC-GEO SSG-OPC-GGO GBV_ILN_40 GBV_ILN_70 GBV_ILN_2018 GBV_ILN_4277 AR 58 2019 5 22 03 281-290 |
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10.1007/s00397-019-01136-0 doi (DE-627)OLC2056019884 (DE-He213)s00397-019-01136-0-p DE-627 ger DE-627 rakwb eng 540 660 VZ 530 VZ Hirayama, Takaya verfasserin aut Characterization of critical gel state of polyamides by viscoelastic, thermal, and IR measurements 2019 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag GmbH Germany, part of Springer Nature 2019 Abstract We examined the liquid-solid transition for polyamides (PA) 6, 66, and 610 by the Chambon-Winter method under cooling. The polyamides exhibited the transition via the critical gel, for which the critical exponent and the stiffness were consistent with those reported under the isothermal measurements for the other polymers. The DSC measurements showed that, for a few materials, the crystallinity at the gelation φgel was very small. This result implies that the hydrogen bonding partially stabilizes the critical gel of such polyamides. The FT-IR measurements demonstrated that the hydrogen bonding was formed cooperatively around the gelation temperature. However, we also found that with increasing the molecular weight, the gelation temperature decreased and φgel increased for PA6. Besides, φgel was smaller for PA66 and PA610 than that for PA6. The mechanism is unknown for these results that locate in the opposite side to the suggested role of hydrogen bonding. Viscoelasticity Gelation Rheology Semi-crystalline polymers Uneyama, Takashi aut Masubuchi, Yuichi aut Enthalten in Rheologica acta Springer Berlin Heidelberg, 1961 58(2019), 5 vom: 22. März, Seite 281-290 (DE-627)129512052 (DE-600)210407-6 (DE-576)014919613 0035-4511 nnns volume:58 year:2019 number:5 day:22 month:03 pages:281-290 https://doi.org/10.1007/s00397-019-01136-0 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OPC-GEO SSG-OPC-GGO GBV_ILN_40 GBV_ILN_70 GBV_ILN_2018 GBV_ILN_4277 AR 58 2019 5 22 03 281-290 |
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10.1007/s00397-019-01136-0 doi (DE-627)OLC2056019884 (DE-He213)s00397-019-01136-0-p DE-627 ger DE-627 rakwb eng 540 660 VZ 530 VZ Hirayama, Takaya verfasserin aut Characterization of critical gel state of polyamides by viscoelastic, thermal, and IR measurements 2019 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag GmbH Germany, part of Springer Nature 2019 Abstract We examined the liquid-solid transition for polyamides (PA) 6, 66, and 610 by the Chambon-Winter method under cooling. The polyamides exhibited the transition via the critical gel, for which the critical exponent and the stiffness were consistent with those reported under the isothermal measurements for the other polymers. The DSC measurements showed that, for a few materials, the crystallinity at the gelation φgel was very small. This result implies that the hydrogen bonding partially stabilizes the critical gel of such polyamides. The FT-IR measurements demonstrated that the hydrogen bonding was formed cooperatively around the gelation temperature. However, we also found that with increasing the molecular weight, the gelation temperature decreased and φgel increased for PA6. Besides, φgel was smaller for PA66 and PA610 than that for PA6. The mechanism is unknown for these results that locate in the opposite side to the suggested role of hydrogen bonding. Viscoelasticity Gelation Rheology Semi-crystalline polymers Uneyama, Takashi aut Masubuchi, Yuichi aut Enthalten in Rheologica acta Springer Berlin Heidelberg, 1961 58(2019), 5 vom: 22. März, Seite 281-290 (DE-627)129512052 (DE-600)210407-6 (DE-576)014919613 0035-4511 nnns volume:58 year:2019 number:5 day:22 month:03 pages:281-290 https://doi.org/10.1007/s00397-019-01136-0 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OPC-GEO SSG-OPC-GGO GBV_ILN_40 GBV_ILN_70 GBV_ILN_2018 GBV_ILN_4277 AR 58 2019 5 22 03 281-290 |
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Characterization of critical gel state of polyamides by viscoelastic, thermal, and IR measurements |
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Abstract We examined the liquid-solid transition for polyamides (PA) 6, 66, and 610 by the Chambon-Winter method under cooling. The polyamides exhibited the transition via the critical gel, for which the critical exponent and the stiffness were consistent with those reported under the isothermal measurements for the other polymers. The DSC measurements showed that, for a few materials, the crystallinity at the gelation φgel was very small. This result implies that the hydrogen bonding partially stabilizes the critical gel of such polyamides. The FT-IR measurements demonstrated that the hydrogen bonding was formed cooperatively around the gelation temperature. However, we also found that with increasing the molecular weight, the gelation temperature decreased and φgel increased for PA6. Besides, φgel was smaller for PA66 and PA610 than that for PA6. The mechanism is unknown for these results that locate in the opposite side to the suggested role of hydrogen bonding. © Springer-Verlag GmbH Germany, part of Springer Nature 2019 |
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Abstract We examined the liquid-solid transition for polyamides (PA) 6, 66, and 610 by the Chambon-Winter method under cooling. The polyamides exhibited the transition via the critical gel, for which the critical exponent and the stiffness were consistent with those reported under the isothermal measurements for the other polymers. The DSC measurements showed that, for a few materials, the crystallinity at the gelation φgel was very small. This result implies that the hydrogen bonding partially stabilizes the critical gel of such polyamides. The FT-IR measurements demonstrated that the hydrogen bonding was formed cooperatively around the gelation temperature. However, we also found that with increasing the molecular weight, the gelation temperature decreased and φgel increased for PA6. Besides, φgel was smaller for PA66 and PA610 than that for PA6. The mechanism is unknown for these results that locate in the opposite side to the suggested role of hydrogen bonding. © Springer-Verlag GmbH Germany, part of Springer Nature 2019 |
| abstract_unstemmed |
Abstract We examined the liquid-solid transition for polyamides (PA) 6, 66, and 610 by the Chambon-Winter method under cooling. The polyamides exhibited the transition via the critical gel, for which the critical exponent and the stiffness were consistent with those reported under the isothermal measurements for the other polymers. The DSC measurements showed that, for a few materials, the crystallinity at the gelation φgel was very small. This result implies that the hydrogen bonding partially stabilizes the critical gel of such polyamides. The FT-IR measurements demonstrated that the hydrogen bonding was formed cooperatively around the gelation temperature. However, we also found that with increasing the molecular weight, the gelation temperature decreased and φgel increased for PA6. Besides, φgel was smaller for PA66 and PA610 than that for PA6. The mechanism is unknown for these results that locate in the opposite side to the suggested role of hydrogen bonding. © Springer-Verlag GmbH Germany, part of Springer Nature 2019 |
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Characterization of critical gel state of polyamides by viscoelastic, thermal, and IR measurements |
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Uneyama, Takashi Masubuchi, Yuichi |
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