Citation: TAO Huichun, ZHU Yu, YOU Jichun. Kinetics of Surface Phase Separation in Poly(methyl methacrylate)/Poly(styrene-ran-acrylonitrile) Blend Film with Off-critical Component[J]. Chinese Journal of Applied Chemistry, ;2016, 33(8): 894-899. doi: 10.11944/j.issn.1000-0518.2016.08.150362 shu

Kinetics of Surface Phase Separation in Poly(methyl methacrylate)/Poly(styrene-ran-acrylonitrile) Blend Film with Off-critical Component

TAO Huichun ^a ,
ZHU Yu ^b ,
YOU Jichun ^b,,

1.
a Department of Basic Science, Jilin Jianzhu University, Changchcun 130118, China;
2.
b College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China

Corresponding author: YOU Jichun,
Received Date: 13 October 2015
Available Online: 6 January 2016
Fund Project:

The kinetics of surface phase separation in PMMA/SAN[poly(methyl methacrylate)/poly(styrene-ran-acrylonitrile)] blend film with off-critical component has been investigated by means of in situ AFM(atomic force microscopy). Our results indicate that the surface phase separation observed exists three stages. The exponent of zero in the first stage validate the Cahn theory; In the second one, the phase behaviors are mainly controlled by Brownian-Diffusion, corresponding to the exponent of 1/3. The hydrokinetics in the last stage results in the occurrence of 2/3 as the characteristic exponent. Our results are significant for not only the understanding of phase separation of polymer blend, but also the engineering and application of polymer films.
- polymer blend,
- phase separation,
- kinetics,
- in situ,
- atomic force microscopy
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