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Citation: LI Meng, WU Hui, HUANG Yan, SU Zhaohui. Effect of Template Surface Property on Crystal Orientation of Syndiotactic Polystyrene in Nano Template[J]. Chinese Journal of Applied Chemistry, ;2012, 29(12): 1406-1411. doi: 10.3724/SP.J.1095.2012.20449 shu

Effect of Template Surface Property on Crystal Orientation of Syndiotactic Polystyrene in Nano Template

1.
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

Corresponding author: SU Zhaohui,
Received Date: 7 October 2012
Available Online: 15 October 2012
Fund Project: 国家自然科学基金资助项目(20774097) (20774097)

Crystallization and orientation behaviors of syndiotactic polystyrene(sPS) were investigated by polarized micro-FTIR.Surface of anodized aluminum oxide(AAO) templates was modified via a vapor phase reaction using n-hexyltrimethoxylsilane to yield an n-alkane template surface,and effect of template surface property on crystal orientation of sPS in the nanopores of various diameters was studied.After isothermally crystallized at 255℃,sPS chains in the crystals adopted a perpendicular orientation with respect to the pore direction of nanopores.The degree of orientation was found to decrease with the pore diameter,and was lower in the modified nanopores than in the pristine ones of the same pore diameter.This could be attributed to the surface induced nucleation,the orientation of which affected by interactions between sPS chains and the pore surface of different properties.
- nanopores,
- surface property,
- crystallization,
- orientation
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