STUDY OF SOLVENT EFFECTS OF THE DILATION MODULUS OF POLY(DIMETHYLSILOXANE)

被引：39
|
作者：
ZHAO, YQ
EICHINGER, BE
机构：
[1] BIOSYM TECHNOL INC,9685 SCRANTON RD,SAN DIEGO,CA 92121
[2] ABBOTT RES INC,BOTHELL,WA 98021
[3] UNIV WASHINGTON,DEPT CHEM,SEATTLE,WA 98195
来源：
MACROMOLECULES | 1992年 / 25卷 / 25期
关键词：
D O I：
10.1021/ma00051a041
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The differential swelling of poly(dimethylsiloxane) (PDMS) model networks, produced by cross-linking silanol-terminated linear PDMS with tetraethoxysilane Si(OEt)4, has been studied to determine the influence of solvent on the observed departures from Flory-Rehner theory. Flory-Huggins interaction parameters and dilation moduli of PDMS with n-heptane, 2,3-dimethylpentane (DMP), 2,2,4-trimethylpentane (TMP), and benzene were measured by integral and differential experiments, respectively. It is proven that the dilation modulus has a strong solvent dependence, confirming once again that the Flory-Rehner theory is inadequate. A correlation between the interaction parameter and the dilation modulus is observed; the larger the interaction parameter, the larger is the dilation modulus.
引用
收藏
页码：6988 / 6995
页数：8
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