Association and surface properties of diblock copolymers of ethylene oxide and DL-lactide in aqueous solution

Siriporn Tanodekaew; Rachpal Pannu; Frank Heatley; David Attwood; Colin Booth

Association and surface properties of diblock copolymers of ethylene oxide and DL-lactide in aqueous solution

Siriporn Tanodekaew, Rachpal Pannu, Frank Heatley, David Attwood, Colin Booth

Research output: Contribution to journal › Article › peer-review

Abstract

Diblock copolymers of ethylene oxide and DL-lactide (EmLn copolymers) were prepared by sequential anionic polymerisation and characterised by gel permeation chromatography (GPC) and 13C NMR. Their association and surface properties in aqueous solution were studied by surface tension and dynamic and static light scattering. Comparison of the critical micelle concentrations (cmc) and micelle association numbers (Nw) of the EmLn copolymers with published values for oxyethylene/oxybutylene (EmBn) copolymers indicated a slightly lower hydrophobicity for a lactide unit: i.e. L ≅ 0.75B. The temperature dependence of the cmc of copolymer E42L12 was analysed to obtain a standard enthalpy of micellisation ΔmicH0 ≈ 40 kJ · mol-1.

Original language	English
Pages (from-to)	927-944
Number of pages	17
Journal	Macromolecular Chemistry and Physics
Volume	198
Issue number	4
Publication status	Published - Apr 1997

Cite this

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title = "Association and surface properties of diblock copolymers of ethylene oxide and DL-lactide in aqueous solution",

abstract = "Diblock copolymers of ethylene oxide and DL-lactide (EmLn copolymers) were prepared by sequential anionic polymerisation and characterised by gel permeation chromatography (GPC) and 13C NMR. Their association and surface properties in aqueous solution were studied by surface tension and dynamic and static light scattering. Comparison of the critical micelle concentrations (cmc) and micelle association numbers (Nw) of the EmLn copolymers with published values for oxyethylene/oxybutylene (EmBn) copolymers indicated a slightly lower hydrophobicity for a lactide unit: i.e. L ≅ 0.75B. The temperature dependence of the cmc of copolymer E42L12 was analysed to obtain a standard enthalpy of micellisation ΔmicH0 ≈ 40 kJ · mol-1.",

author = "Siriporn Tanodekaew and Rachpal Pannu and Frank Heatley and David Attwood and Colin Booth",

year = "1997",

month = apr,

language = "English",

volume = "198",

pages = "927--944",

journal = "Macromolecular Chemistry and Physics",

issn = "1022-1352",

publisher = "John Wiley & Sons Ltd",

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TY - JOUR

T1 - Association and surface properties of diblock copolymers of ethylene oxide and DL-lactide in aqueous solution

AU - Tanodekaew, Siriporn

AU - Pannu, Rachpal

AU - Heatley, Frank

AU - Attwood, David

AU - Booth, Colin

PY - 1997/4

Y1 - 1997/4

N2 - Diblock copolymers of ethylene oxide and DL-lactide (EmLn copolymers) were prepared by sequential anionic polymerisation and characterised by gel permeation chromatography (GPC) and 13C NMR. Their association and surface properties in aqueous solution were studied by surface tension and dynamic and static light scattering. Comparison of the critical micelle concentrations (cmc) and micelle association numbers (Nw) of the EmLn copolymers with published values for oxyethylene/oxybutylene (EmBn) copolymers indicated a slightly lower hydrophobicity for a lactide unit: i.e. L ≅ 0.75B. The temperature dependence of the cmc of copolymer E42L12 was analysed to obtain a standard enthalpy of micellisation ΔmicH0 ≈ 40 kJ · mol-1.

AB - Diblock copolymers of ethylene oxide and DL-lactide (EmLn copolymers) were prepared by sequential anionic polymerisation and characterised by gel permeation chromatography (GPC) and 13C NMR. Their association and surface properties in aqueous solution were studied by surface tension and dynamic and static light scattering. Comparison of the critical micelle concentrations (cmc) and micelle association numbers (Nw) of the EmLn copolymers with published values for oxyethylene/oxybutylene (EmBn) copolymers indicated a slightly lower hydrophobicity for a lactide unit: i.e. L ≅ 0.75B. The temperature dependence of the cmc of copolymer E42L12 was analysed to obtain a standard enthalpy of micellisation ΔmicH0 ≈ 40 kJ · mol-1.

M3 - Article

SN - 1022-1352

VL - 198

SP - 927

EP - 944

JO - Macromolecular Chemistry and Physics

JF - Macromolecular Chemistry and Physics

IS - 4

ER -

Association and surface properties of diblock copolymers of ethylene oxide and DL-lactide in aqueous solution

Abstract

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