Citation: De-zheng Pang, Min Zuo, Ji-shi Zhao, Qiang Zheng. INFLUENCE OF CLAY ON THE MORPHOLOGY AND PHASE SEPARATION BEHAVIOR OF POLY(METHYL METHACRYLATE)/POLY(STYRENE-co-ACRYLONITRILE) BLENDS[J]. Chinese Journal of Polymer Science, ;2013, 31(11): 1470-1483. doi: 10.1007/s10118-013-1356-y shu

INFLUENCE OF CLAY ON THE MORPHOLOGY AND PHASE SEPARATION BEHAVIOR OF POLY(METHYL METHACRYLATE)/POLY(STYRENE-co-ACRYLONITRILE) BLENDS

1.
Key Laboratory of Macromolecule Synthesis and Functionalization, Ministry of Education, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China

Received Date: 15 April 2013
Revised Date: 28 May 2013

Fund Project: This work was financially supported by the National Natural Science Foundation of China (No. 51003093), the Program for Zhejiang Provincial Innovative Research Teams (No. 2009R50004) and the Research Foundation of Education Bureau of Zhejiang Province (No. Y200908238).

The effect of clay on the morphology and phase-separation behavior of poly(methyl methacrylate)/poly(styrene-co-acrylonitrile) (PMMA/SAN) blends and the variation of clay dispersion have been investigated. With the evolution of phase separation in PMMA/SAN, most of the clays are first located at the boundaries between PMMA and SAN, and then gradually move to the PMMA-rich domain, owing to the affinity of clay to PMMA. The introduction of clay causes the increase of binodal and spinodal temperatures of PMMA/SAN and enlarges their metastable region, indicating the phase stabilizing effect of clay on the matrix. But the influence of clay on the cloud points obviously depends on the composition of PMMA/SAN. The selective adsorption of PMMA on the clay results in the difference between the composition of surface layer and that of polymer matrix. Hence, the clay plays the role of an agent changing the conditions of phase structure formation.
- Nanocomposites,
- PMMA/SAN blend,
- Clay,
- Phase separation behavior,
- Morphology
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