Microspheres Prepared from Ultrahigh Molecular Weight Polyethylene in Supercritical CO2 Fluid

被引：0

作者：

Wang Chang-Ming ^{[1
,2
]}

Zhang Xiu-Qin ^{[1
]}

Zhao Ying ^{[1
]}

Han Bu-Xing ^{[1
]}

Wang Du-Jin ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Chem, Chinese Acad Sci Key Lab Engn Plast, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE | 2010年 / 31卷 / 06期

关键词：

Ultrahigh molecular weight polyethylene; Hollow microsphere; Supercritical fluid; CO2; Crystallization; CARBON-DIOXIDE; SYNDIOTACTIC POLYSTYRENE; MICROPARTICLES; TRANSITION; COMPOSITE; CRYSTAL;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The hollow microspheres were prepared from ultrahigh molecular weight polyethylene(UHMWPE) in supercritical CO2 fluid. The sphere size is Gaussian distribution, and can be controlled at a narrow range. There are pores on the surface of hollow microspheres clue to the CO2 gas releasing from confined location in the microsphere with decreasing the temperature of supercritical fluid. The crystallinity increases and monoclinic crystals can be generated for prepared UHMWPE microspheres in supercritical CO2 fluid. The isothermal crystallization process can increase both the crystallinity and the content of orthorhombic crystals of UHMWPE.

引用

页码：1252 / 1256

页数：5

共 16 条

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