SELF-ASSOCIATING NETWORKS OF POLY(METHACRYLIC ACID-G-ETHYLENE GLYCOL)

被引：121

作者：

KLIER, J ^{[1
]}

SCRANTON, AB ^{[1
]}

PEPPAS, NA ^{[1
]}

机构：

[1] PURDUE UNIV,SCH CHEM ENGN,W LAFAYETTE,IN 47907

来源：

MACROMOLECULES | 1990年 / 23卷 / 23期

关键词：

D O I：

10.1021/ma00225a011

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Poly(methacrylic acid-g-ethylene glycol) networks were prepared by the copolymerization of methacrylic acid and polyethylene glycol) methacrylate in the presence of a tetraethylene glycol dimethacrylate cross-linking agent Their swelling characteristics depended on swelling solution pH, swelling temperature, copolymer composition, and network structure. In aqueous swelling solutions at acidic pH, copolymer networks swelled to a much lower extent than homopolymer networks. This behavior was attributed to complex formation between polyethylene glycol) and poly(methacrylic acid) segments. Nuclear Overhauser enhancement measurements revealed that graft copolymers formed complexes under a wider range of concentrations and polyethylene glycol) molecular weights than the two ungrafted homopolymers. This enhancement in complexation was attributed to elimination of the unfavorable translational free energy change of complexation by covalent attachment of the complexing species. © 1990, American Chemical Society. All rights reserved.

引用

页码：4944 / 4949

页数：6

共 23 条

[1] ADACHI H, 1982, POLYM J, V14, P955
[2] BEKTUROV E, 1980, ADV POLYM SCI, V43, P100
[3] HYDROPHOBIC ATTRACTION OF PYRENE-END-LABELED POLY(ETHYLENE GLYCOL) IN WATER AND WATER-METHANOL MIXTURES
CHAR, K
FRANK, CW
GAST, AP
TANG, WT
[J]. MACROMOLECULES, 1987, 20 (08) : 1833 - 1838
[4] FLUOROMETRIC STUDY OF THE EQUILIBRIUM AND KINETICS OF POLY(ACRYLIC ACID) ASSOCIATION WITH POLYOXYETHYLENE OR POLYVINYL PYRROLIDONE)
CHEN, HL
MORAWETZ, H
[J]. EUROPEAN POLYMER JOURNAL, 1983, 19 (10-1) : 923 - 928
[5] GELS AS SIZE SELECTIVE EXTRACTION SOLVENTS
CUSSLER, EL
STOKAR, MR
VARBERG, JE
[J]. AICHE JOURNAL, 1984, 30 (04) : 578 - 582
[6] DONG LC, 1988, J CONTROL RELEASE, V4, P233
[7] CHEMICAL ASPECTS OF GEL EXTRACTION
GEHRKE, SH
ANDREWS, GP
CUSSLER, EL
[J]. CHEMICAL ENGINEERING SCIENCE, 1986, 41 (08) : 2153 - 2160
[8] ENZYME ELECTRODES
GOUGH, DA
ANDRADE, JD
[J]. SCIENCE, 1973, 180 (4084) : 380 - 384
[9] HOFFMAN A S, 1986, Journal of Controlled Release, V4, P213
[10] Horbett TA, 1984, RECENT ADV DRUG DELI, P209, DOI [10.1007/978-1-4613-2745-5_14, DOI 10.1007/978-1-4613-2745-5_14]

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