Micellar parameters of diblock copolymers and their interactions with ionic surfactants
Abstract The interactions of non-ionic amphiphilic diblock copolymer poly(oxyethylene/oxybutylene) ($ E_{39} $$ B_{18} $) with anionic surfactant sodium dodecyl sulphate (SDS) and cationic surfactant hexadecyltrimethylammonium bromide (CTAB) were studied by using various techniques such as surface t...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Rehman, Noor [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2011 |
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| Schlagwörter: |
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| Anmerkung: |
© Chinese Chemical Society, Institute of Chemistry, Chinese Academy of Sciences and Springer-Verlag Berlin Heidelberg 2012 |
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| Übergeordnetes Werk: |
Enthalten in: Chinese journal of polymer science - Chinese Chemical Society and Institute of Chemistry, CAS, 1985, 30(2011), 2 vom: 29. Dez., Seite 217-226 |
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| Übergeordnetes Werk: |
volume:30 ; year:2011 ; number:2 ; day:29 ; month:12 ; pages:217-226 |
| Links: |
|---|
| DOI / URN: |
10.1007/s10118-012-1114-6 |
|---|
| Katalog-ID: |
OLC2038264503 |
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| 520 | |a Abstract The interactions of non-ionic amphiphilic diblock copolymer poly(oxyethylene/oxybutylene) ($ E_{39} $$ B_{18} $) with anionic surfactant sodium dodecyl sulphate (SDS) and cationic surfactant hexadecyltrimethylammonium bromide (CTAB) were studied by using various techniques such as surface tension, conductivity, steady-state fluorescence and dynamic light scattering. Surface tension measurements were used to determine the critical micelle concentration (CMC) and thereby the free energy of micellization (ΔGmic), free energy of adsorption (ΔGads), surface excess concentration (Γ) and minimum area per molecule (A). Conductivity measurements were used to determine the critical micelle concentration (CMC), critical aggregation concentration (CAC), polymer saturation point (PSP), degree of ionization (α) and counter ion binding (β). Dynamic light scattering experiments were performed to check the changes in physiochemical properties of the block copolymer micelles taken place due to the interactions of diblock copolymers with ionic surfactants. The ratio of the first and third vibronic peaks (I1/I3) indicated the polarity of the pyrene micro environment and was used for the detection of micelle as well as polymer-surfactant interactions. Aggregation number (N), number of binding sites (n) and free energy of binding (ΔGb) for pure surfactants as well as for polymer-surfactant mixed micellar systems were determined by the fluorescence quenching method. | ||
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10.1007/s10118-012-1114-6 doi (DE-627)OLC2038264503 (DE-He213)s10118-012-1114-6-p DE-627 ger DE-627 rakwb eng 540 660 VZ 660 670 VZ Rehman, Noor verfasserin aut Micellar parameters of diblock copolymers and their interactions with ionic surfactants 2011 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Chinese Chemical Society, Institute of Chemistry, Chinese Academy of Sciences and Springer-Verlag Berlin Heidelberg 2012 Abstract The interactions of non-ionic amphiphilic diblock copolymer poly(oxyethylene/oxybutylene) ($ E_{39} $$ B_{18} $) with anionic surfactant sodium dodecyl sulphate (SDS) and cationic surfactant hexadecyltrimethylammonium bromide (CTAB) were studied by using various techniques such as surface tension, conductivity, steady-state fluorescence and dynamic light scattering. Surface tension measurements were used to determine the critical micelle concentration (CMC) and thereby the free energy of micellization (ΔGmic), free energy of adsorption (ΔGads), surface excess concentration (Γ) and minimum area per molecule (A). Conductivity measurements were used to determine the critical micelle concentration (CMC), critical aggregation concentration (CAC), polymer saturation point (PSP), degree of ionization (α) and counter ion binding (β). Dynamic light scattering experiments were performed to check the changes in physiochemical properties of the block copolymer micelles taken place due to the interactions of diblock copolymers with ionic surfactants. The ratio of the first and third vibronic peaks (I1/I3) indicated the polarity of the pyrene micro environment and was used for the detection of micelle as well as polymer-surfactant interactions. Aggregation number (N), number of binding sites (n) and free energy of binding (ΔGb) for pure surfactants as well as for polymer-surfactant mixed micellar systems were determined by the fluorescence quenching method. Surface tension Conductivity Dynamic light scattering steady-state fluorescence Micellization Khan, Abbas aut Bibi, Iram aut Siddiq, Mohammad aut Enthalten in Chinese journal of polymer science Chinese Chemical Society and Institute of Chemistry, CAS, 1985 30(2011), 2 vom: 29. Dez., Seite 217-226 (DE-627)130996939 (DE-600)1082856-4 (DE-576)026374684 0256-7679 nnns volume:30 year:2011 number:2 day:29 month:12 pages:217-226 https://doi.org/10.1007/s10118-012-1114-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE GBV_ILN_70 GBV_ILN_267 GBV_ILN_2018 GBV_ILN_4277 AR 30 2011 2 29 12 217-226 |
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10.1007/s10118-012-1114-6 doi (DE-627)OLC2038264503 (DE-He213)s10118-012-1114-6-p DE-627 ger DE-627 rakwb eng 540 660 VZ 660 670 VZ Rehman, Noor verfasserin aut Micellar parameters of diblock copolymers and their interactions with ionic surfactants 2011 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Chinese Chemical Society, Institute of Chemistry, Chinese Academy of Sciences and Springer-Verlag Berlin Heidelberg 2012 Abstract The interactions of non-ionic amphiphilic diblock copolymer poly(oxyethylene/oxybutylene) ($ E_{39} $$ B_{18} $) with anionic surfactant sodium dodecyl sulphate (SDS) and cationic surfactant hexadecyltrimethylammonium bromide (CTAB) were studied by using various techniques such as surface tension, conductivity, steady-state fluorescence and dynamic light scattering. Surface tension measurements were used to determine the critical micelle concentration (CMC) and thereby the free energy of micellization (ΔGmic), free energy of adsorption (ΔGads), surface excess concentration (Γ) and minimum area per molecule (A). Conductivity measurements were used to determine the critical micelle concentration (CMC), critical aggregation concentration (CAC), polymer saturation point (PSP), degree of ionization (α) and counter ion binding (β). Dynamic light scattering experiments were performed to check the changes in physiochemical properties of the block copolymer micelles taken place due to the interactions of diblock copolymers with ionic surfactants. The ratio of the first and third vibronic peaks (I1/I3) indicated the polarity of the pyrene micro environment and was used for the detection of micelle as well as polymer-surfactant interactions. Aggregation number (N), number of binding sites (n) and free energy of binding (ΔGb) for pure surfactants as well as for polymer-surfactant mixed micellar systems were determined by the fluorescence quenching method. Surface tension Conductivity Dynamic light scattering steady-state fluorescence Micellization Khan, Abbas aut Bibi, Iram aut Siddiq, Mohammad aut Enthalten in Chinese journal of polymer science Chinese Chemical Society and Institute of Chemistry, CAS, 1985 30(2011), 2 vom: 29. Dez., Seite 217-226 (DE-627)130996939 (DE-600)1082856-4 (DE-576)026374684 0256-7679 nnns volume:30 year:2011 number:2 day:29 month:12 pages:217-226 https://doi.org/10.1007/s10118-012-1114-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE GBV_ILN_70 GBV_ILN_267 GBV_ILN_2018 GBV_ILN_4277 AR 30 2011 2 29 12 217-226 |
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10.1007/s10118-012-1114-6 doi (DE-627)OLC2038264503 (DE-He213)s10118-012-1114-6-p DE-627 ger DE-627 rakwb eng 540 660 VZ 660 670 VZ Rehman, Noor verfasserin aut Micellar parameters of diblock copolymers and their interactions with ionic surfactants 2011 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Chinese Chemical Society, Institute of Chemistry, Chinese Academy of Sciences and Springer-Verlag Berlin Heidelberg 2012 Abstract The interactions of non-ionic amphiphilic diblock copolymer poly(oxyethylene/oxybutylene) ($ E_{39} $$ B_{18} $) with anionic surfactant sodium dodecyl sulphate (SDS) and cationic surfactant hexadecyltrimethylammonium bromide (CTAB) were studied by using various techniques such as surface tension, conductivity, steady-state fluorescence and dynamic light scattering. Surface tension measurements were used to determine the critical micelle concentration (CMC) and thereby the free energy of micellization (ΔGmic), free energy of adsorption (ΔGads), surface excess concentration (Γ) and minimum area per molecule (A). Conductivity measurements were used to determine the critical micelle concentration (CMC), critical aggregation concentration (CAC), polymer saturation point (PSP), degree of ionization (α) and counter ion binding (β). Dynamic light scattering experiments were performed to check the changes in physiochemical properties of the block copolymer micelles taken place due to the interactions of diblock copolymers with ionic surfactants. The ratio of the first and third vibronic peaks (I1/I3) indicated the polarity of the pyrene micro environment and was used for the detection of micelle as well as polymer-surfactant interactions. Aggregation number (N), number of binding sites (n) and free energy of binding (ΔGb) for pure surfactants as well as for polymer-surfactant mixed micellar systems were determined by the fluorescence quenching method. Surface tension Conductivity Dynamic light scattering steady-state fluorescence Micellization Khan, Abbas aut Bibi, Iram aut Siddiq, Mohammad aut Enthalten in Chinese journal of polymer science Chinese Chemical Society and Institute of Chemistry, CAS, 1985 30(2011), 2 vom: 29. Dez., Seite 217-226 (DE-627)130996939 (DE-600)1082856-4 (DE-576)026374684 0256-7679 nnns volume:30 year:2011 number:2 day:29 month:12 pages:217-226 https://doi.org/10.1007/s10118-012-1114-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE GBV_ILN_70 GBV_ILN_267 GBV_ILN_2018 GBV_ILN_4277 AR 30 2011 2 29 12 217-226 |
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Chinese journal of polymer science |
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Micellar parameters of diblock copolymers and their interactions with ionic surfactants |
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Micellar parameters of diblock copolymers and their interactions with ionic surfactants |
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Rehman, Noor |
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Chinese journal of polymer science |
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Chinese journal of polymer science |
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Rehman, Noor Khan, Abbas Bibi, Iram Siddiq, Mohammad |
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10.1007/s10118-012-1114-6 |
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540 660 670 |
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micellar parameters of diblock copolymers and their interactions with ionic surfactants |
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Micellar parameters of diblock copolymers and their interactions with ionic surfactants |
| abstract |
Abstract The interactions of non-ionic amphiphilic diblock copolymer poly(oxyethylene/oxybutylene) ($ E_{39} $$ B_{18} $) with anionic surfactant sodium dodecyl sulphate (SDS) and cationic surfactant hexadecyltrimethylammonium bromide (CTAB) were studied by using various techniques such as surface tension, conductivity, steady-state fluorescence and dynamic light scattering. Surface tension measurements were used to determine the critical micelle concentration (CMC) and thereby the free energy of micellization (ΔGmic), free energy of adsorption (ΔGads), surface excess concentration (Γ) and minimum area per molecule (A). Conductivity measurements were used to determine the critical micelle concentration (CMC), critical aggregation concentration (CAC), polymer saturation point (PSP), degree of ionization (α) and counter ion binding (β). Dynamic light scattering experiments were performed to check the changes in physiochemical properties of the block copolymer micelles taken place due to the interactions of diblock copolymers with ionic surfactants. The ratio of the first and third vibronic peaks (I1/I3) indicated the polarity of the pyrene micro environment and was used for the detection of micelle as well as polymer-surfactant interactions. Aggregation number (N), number of binding sites (n) and free energy of binding (ΔGb) for pure surfactants as well as for polymer-surfactant mixed micellar systems were determined by the fluorescence quenching method. © Chinese Chemical Society, Institute of Chemistry, Chinese Academy of Sciences and Springer-Verlag Berlin Heidelberg 2012 |
| abstractGer |
Abstract The interactions of non-ionic amphiphilic diblock copolymer poly(oxyethylene/oxybutylene) ($ E_{39} $$ B_{18} $) with anionic surfactant sodium dodecyl sulphate (SDS) and cationic surfactant hexadecyltrimethylammonium bromide (CTAB) were studied by using various techniques such as surface tension, conductivity, steady-state fluorescence and dynamic light scattering. Surface tension measurements were used to determine the critical micelle concentration (CMC) and thereby the free energy of micellization (ΔGmic), free energy of adsorption (ΔGads), surface excess concentration (Γ) and minimum area per molecule (A). Conductivity measurements were used to determine the critical micelle concentration (CMC), critical aggregation concentration (CAC), polymer saturation point (PSP), degree of ionization (α) and counter ion binding (β). Dynamic light scattering experiments were performed to check the changes in physiochemical properties of the block copolymer micelles taken place due to the interactions of diblock copolymers with ionic surfactants. The ratio of the first and third vibronic peaks (I1/I3) indicated the polarity of the pyrene micro environment and was used for the detection of micelle as well as polymer-surfactant interactions. Aggregation number (N), number of binding sites (n) and free energy of binding (ΔGb) for pure surfactants as well as for polymer-surfactant mixed micellar systems were determined by the fluorescence quenching method. © Chinese Chemical Society, Institute of Chemistry, Chinese Academy of Sciences and Springer-Verlag Berlin Heidelberg 2012 |
| abstract_unstemmed |
Abstract The interactions of non-ionic amphiphilic diblock copolymer poly(oxyethylene/oxybutylene) ($ E_{39} $$ B_{18} $) with anionic surfactant sodium dodecyl sulphate (SDS) and cationic surfactant hexadecyltrimethylammonium bromide (CTAB) were studied by using various techniques such as surface tension, conductivity, steady-state fluorescence and dynamic light scattering. Surface tension measurements were used to determine the critical micelle concentration (CMC) and thereby the free energy of micellization (ΔGmic), free energy of adsorption (ΔGads), surface excess concentration (Γ) and minimum area per molecule (A). Conductivity measurements were used to determine the critical micelle concentration (CMC), critical aggregation concentration (CAC), polymer saturation point (PSP), degree of ionization (α) and counter ion binding (β). Dynamic light scattering experiments were performed to check the changes in physiochemical properties of the block copolymer micelles taken place due to the interactions of diblock copolymers with ionic surfactants. The ratio of the first and third vibronic peaks (I1/I3) indicated the polarity of the pyrene micro environment and was used for the detection of micelle as well as polymer-surfactant interactions. Aggregation number (N), number of binding sites (n) and free energy of binding (ΔGb) for pure surfactants as well as for polymer-surfactant mixed micellar systems were determined by the fluorescence quenching method. © Chinese Chemical Society, Institute of Chemistry, Chinese Academy of Sciences and Springer-Verlag Berlin Heidelberg 2012 |
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Micellar parameters of diblock copolymers and their interactions with ionic surfactants |
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