Effect of Nanoclay on the Phase Separation Behavior of Poly(methyl methacrylate)/Poly(vinyl acetate) Binary Polymer Blends

Ji-shi Zhao; Min Zuo; Chao-ying Lin; Qiang Zheng

doi:10.1007/s10118-014-1527-5

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Effect of Nanoclay on the Phase Separation Behavior of Poly(methyl methacrylate)/Poly(vinyl acetate) Binary Polymer Blends

Updated：2021-06-21

- Effect of Nanoclay on the Phase Separation Behavior of Poly(methyl methacrylate)/Poly(vinyl acetate) Binary Polymer Blends
- Chinese Journal of Polymer Science Vol. 32, Issue 11, Pages: 1419-1430(2014)
- Affiliations：
  
  Key Laboratory of Macromolecule Synthesis and Functionalization, Ministry of Education, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
- Author bio：
  
  **Min Zuo (左敏), E-mail: kezuomin@zju.edu.cn
- Funds：
- DOI：10.1007/s10118-014-1527-5
  CLC：
- Received：18 December 2013，
  
  Revised：2014-01-15，
  
  Accepted：16 January 2014，
  
  Published：2014-11
- Accepted：
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Ji-shi Zhao, Min Zuo, Chao-ying Lin, et al. Effect of Nanoclay on the Phase Separation Behavior of Poly(methyl methacrylate)/Poly(vinyl acetate) Binary Polymer Blends[J]. Chinese Journal of Polymer Science, 2014, 32(11): 1419-1430.
DOI：

Ji-shi Zhao, Min Zuo, Chao-ying Lin, et al. Effect of Nanoclay on the Phase Separation Behavior of Poly(methyl methacrylate)/Poly(vinyl acetate) Binary Polymer Blends[J]. Chinese Journal of Polymer Science, 2014, 32(11): 1419-1430. DOI： 10.1007/s10118-014-1527-5.

摘要

Abstract

The effect of nanoclay on the phase-separation behavior of poly(methyl methacrylate)/poly(vinyl acetate) (PMMA/PVAc) blends has been mainly investigated by small-angle laser light scattering. It is found that the effect of clay on the thermodynamics and kinetics of phase-separation for PMMA/PVAc blends seems inconsistent. The kinetics phase-separation rate decreases

while the thermodynamics parameters

cloud points

and delay time

of isothermal phase-separation also decrease

and the variation amplitude depends on the matrix composition. The affinity of clay to PMMA results in the composition difference between the border layer and the polymer matrix and further causes the concentration fluctuation at the early stage of phase separation to reduce

and

. On the other hand

the decrease of phase-separation rate is caused by the mechanical barrier effect of clay on the macromolecular diffusion of blend matrix. Hence

such seemingly counterintuitive results on the thermodynamics and kinetics of phase-separation are attributed to different dominant factors.

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