Research on Sphericization of Polyimide

Chem. J. Chinese Universities

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Research on Sphericization of Polyimide

JIANG Yuan-Yuan, QUE Zheng-Bo, WANG Xiao-Dong, HUANG Pei^*

State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China

Received:2008-03-10 Revised:1900-01-01 Online:2008-10-10 Published:2008-10-10
Contact: HUANG Pei

Abstract

Abstract: A new method for preparing PI microspheres was proposed. The properties of the solution and dispersion medium were modulated as PVP had been added. The effects of PVP and its content on the morphology, size of PI microspheres were investigated. The results show that the favorable spherical polymer particles were obtained with PVP in the solution. The average size of PI microspheres decreased with the increase of the PVP content and better size distribution was also measured. Meanwhile, the molecular weight of the polymer decreased lightly. The morphology of PI microspheres with water was better than that of with ethanol. The size of microspheres decreased with the increase of PVP concentration in water, and the uniformity of microspheres was also improved. PVP played roles of nucleation, balling and dispersion respectively in the whole process. The polyimide microspheres could be prepared in the micro-scale by this way.

Key words: Polyimide, Microsphere, Polyvinylpyrrolidone(PVP)

CLC Number:

O631.5

TrendMD:

JIANG Yuan-Yuan, QUE Zheng-Bo, WANG Xiao-Dong, HUANG Pei^*. Research on Sphericization of Polyimide[J]. Chem. J. Chinese Universities, doi: .

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Research on Sphericization of Polyimide

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