Rheology and Morphology of Linear Polyurethane and Poly(methyl methacrylate) Blends Formed In Situ

被引：3
|
作者：
Shumskii, V. F. [1 ]
Kosyanchuk, L. F. [1 ]
Getmanchuk, I. P. [1 ]
Babich, O. V. [1 ]
Antonenko, O. I. [1 ]
机构：
[1] Natl Acad Sci Ukraine, Inst Macromol Chem, UA-02160 Kiev, Ukraine
来源：
POLYMER SCIENCE SERIES A | 2011年 / 53卷 / 10期
关键词：
PHASE-SEPARATION; POLYMER;
D O I：
10.1134/S0965545X11090112
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 rheological properties and morphology of flow during the in situ formation of linear polyurethane and poly(methyl methacrylate) blends of various compositions are studied. At a certain conversion of the components, the initial homogeneous blend undergoes phase separation, as evidenced by the nonadditive dependence of the logarithm of viscosity on blend composition. For individual components, the gel points correspond to appreciably different conversions. For components in blends of various compositions, this difference is less pronounced and associated with the kinetic conditions of blend formation. The morphology of flow of the reaction blend over the time (or conversion) between the onset of phase separation and gelation during flow with a high shear rate is determined by the blend composition and the ratio between the viscosity of the dispersion phase and the matrix.
引用
收藏
页码：955 / 962
页数：8
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