TEMPERATURE-DEPENDENCE OF THE INTERACTION PARAMETER OF POLYSTYRENE AND POLY(METHYL METHACRYLATE)

被引：442

作者：

RUSSELL, TP ^{[1
]}

HJELM, RP ^{[1
]}

SEEGER, PA ^{[1
]}

机构：

[1] UNIV CALIF,LOS ALAMOS NATL LAB,LOS ALAMOS NEUTRON SCATTERING CTR,DIV PHYS,LOS ALAMOS,NM 87544

来源：

MACROMOLECULES | 1990年 / 23卷 / 03期

关键词：

D O I：

10.1021/ma00205a033

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 Flory-Huggins interaction parameter, χ, has been determined for polystyrene, PS, and poly(methyl methacrylate), PMMA, by measuring the small-angle neutron scattering, SANS, from P(S-6-MMA), symmetric, diblock copolymers above the microphase separation temperature. The SANS profile can be well described by the correlation hole scattering from which χ is easily obtained. Measurements as a function of temperature yield χ = (0.028 ± 0.002) + (3.9 ± 0.06)/Γ where Τ is the absolute temperature. These results show that the entropie contribution of χ is much greater than the enthalpic contribution and that the temperature dependence of χ is weak. © 1990, American Chemical Society. All rights reserved.

引用

页码：890 / 893

页数：4

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