Effect of supercritical CO2 and cosolvent on the crystallization and melting behavior of bisphenol-A polycarbonate

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	Effect of supercritical CO2 and cosolvent on the crystallization and melting behavior of bisphenol-A polycarbonate
	Liao, X; Li, G; Sun, XH; He, JS
刊名	ACTA CHIMICA SINICA
	2003-10-01
卷号	61 期号:10 页码:1697-1699
关键词	Supercritical Co2 Crystallization Polycarbonate Cosolvent
ISSN号	0567-7351
英文摘要	The influences of temperature and pressure on the melting behavior of PC treated by supercritical CO2 and CO2 + C2H5OH have been studied by differential scanning calorimetry ( DSC). Supercritical CO2 depresses the crystallization temperature of PC and induces crystallization below the glass transition temperature. CO2 has no dipole moment and only a small quadrupole moment and, therefore, is essentially a nonpolar fluid. The addition of a small amount of a polar cosolvent is equivalent to giving the mixed fluid an overall small dipole moment. Similar annealing condition in the presence of supercritical CO2 + C2H5OH leads to more stable crystals. The addition of a small amount of C2H5OH as a cosolvent can induce crystallization at much lower temperature and pressure. In addition to its own plasticizing effect, supercritical CO2 acting as a carrier which delivers the polar component uniformly into the polymer matrix.
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000186480900036
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/80191]
专题	中国科学院化学研究所
通讯作者	Liao, X
作者单位	Chinese Acad Sci, Inst Chem, Ctr Mol Sci, State Key Lab Engn Plast, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Liao, X,Li, G,Sun, XH,et al. Effect of supercritical CO2 and cosolvent on the crystallization and melting behavior of bisphenol-A polycarbonate[J]. ACTA CHIMICA SINICA,2003,61(10):1697-1699.
APA	Liao, X,Li, G,Sun, XH,&He, JS.(2003).Effect of supercritical CO2 and cosolvent on the crystallization and melting behavior of bisphenol-A polycarbonate.ACTA CHIMICA SINICA,61(10),1697-1699.
MLA	Liao, X,et al."Effect of supercritical CO2 and cosolvent on the crystallization and melting behavior of bisphenol-A polycarbonate".ACTA CHIMICA SINICA 61.10(2003):1697-1699.