Linear low-density polyethylene/poly(ethylene-ran-butene) elastomer blends: Miscibility and crystallization behavior

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	Linear low-density polyethylene/poly(ethylene-ran-butene) elastomer blends: Miscibility and crystallization behavior
	Li, CX; Zhao, J; Zhao, DL; Fan, QR
刊名	JOURNAL OF POLYMER RESEARCH
	2004-12-01
卷号	11 期号:4 页码:323-331
关键词	Blends Crystallization Linear Low-density Polyethylene (Lldpe) Phase Separation Poly(Ethylene-ran-butene)
ISSN号	1022-9760
英文摘要	The phase and crystallization behavior of the blends consisting of LLDPE (0.7 mol% hexene copolymer) and PEB (26 mol% butene copolymer) have been investigated using optical microscopy (OM), differential scanning calorimetry (DSC) and wide-angle X-ray diffraction (WAXD). The blends exhibited an upper critical solution temperature of 162 degreesC. The solubility parameter analysis showed that the solubility parameter of LLDPE decreased more rapidly than that of PEB with temperature. However, due to the slow kinetics of phase separation, at lower crystallization temperatures. the crystallization and melting behavior of LLDPE mainly reflected the miscibility between LLDPE and PEB. Crystallization from the two-phase state could present two crystallization peaks. PEB didn't change the crystal cell unit and crystallinity of LLDPE, but changed its distribution of lamellar thickness or crystal perfection. ne dilute effect of PEB also changed the overall nature of the nucleation and growth process of LLDPE. The equilibrium melting temperature in this blend could be obtained by the Hoffman-Weeks method, and comparing with that of the pure LLDPE. it was reduced and kept relatively constant in the bi-phase state. The phase diagram made up of the LLPS boundary, equilibrium melting temperatures and melting temperatures observed may be better to indicate the phase and crystallization behavior of LLDPE/PEB blends.
语种	英语
出版者	KLUWER ACADEMIC PUBL
WOS记录号	WOS:000226426400011
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/55481]
专题	中国科学院化学研究所
通讯作者	Fan, QR
作者单位	Chinese Acad Sci, Inst Chem, Ctr Mol Sci, State Key Lab Polymer Phys & Chem, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Li, CX,Zhao, J,Zhao, DL,et al. Linear low-density polyethylene/poly(ethylene-ran-butene) elastomer blends: Miscibility and crystallization behavior[J]. JOURNAL OF POLYMER RESEARCH,2004,11(4):323-331.
APA	Li, CX,Zhao, J,Zhao, DL,&Fan, QR.(2004).Linear low-density polyethylene/poly(ethylene-ran-butene) elastomer blends: Miscibility and crystallization behavior.JOURNAL OF POLYMER RESEARCH,11(4),323-331.
MLA	Li, CX,et al."Linear low-density polyethylene/poly(ethylene-ran-butene) elastomer blends: Miscibility and crystallization behavior".JOURNAL OF POLYMER RESEARCH 11.4(2004):323-331.