Crystallization of micelles and matrix in dilute diblock copolymer/homopolymer solutions

	Crystallization of micelles and matrix in dilute diblock copolymer/homopolymer solutions
	Liu LZ ; Jiang BZ
刊名	journal of polymer science part b-polymer physics
	1998
卷号	36 期号:16 页码:2961-2970
关键词	X-RAY-SCATTERING BUTADIENE BLOCK COPOLYMER HOMOPOLYMER BLENDS CO-POLYMERS MIXTURES TRANSITION
ISSN号	0887-6266
通讯作者	liu lz
中文摘要	the crystallization, morphology, and crystalline structure of dilute solid solutions of tetrahydrofuran-methyl methacrylate diblock copolymer (pthf-b-pmma) in poly(ethylene oxide) (peo) and pthf have been studied with differential scanning calorimetry (dsc), x-ray, and optical microscopy. this study provides a new insight into the crystallization behavior of block copolymers. for the dilute pthf-b-pmma/peo system containing only 2 to 7 wt % of pthf content, crystallization of the pthf micellar core was detected both on cooling and on heating. compared the crystallization of the pthf in the dilute solutions with that in the pure copolymer, it was found that the crystallizability of the pthf micellar core in the solution is much greater than that of the dispersed pthf microdomain in the pure copolymer. the stronger crystallizability in the solution was presumably due to a softened pmma corona formed in the solution of the copolymer with peg. however, the "soft" micelles formed in the solution (meaning that the glass transition temperatures (t-g) of the micelle is lower than the t-m of the matrix phase) showed almost no effects on the spherulitic morphology of the peo component, compared with that of the pure peo sample. in contrast, significant effects of the micelles with a "hard" pmma core (meaning that the t-g of the core is higher than the t-m of the pthf homopolymer) on the nucleation, crystalline structure, and spherulitic morphology were observed for the dilute pthf-b-pmma/pthf system. (c) 1998 john wiley & sons, inc.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000076837000011
公开日期	2010-11-04
内容类型	期刊论文
源URL	[http://202.98.16.49/handle/322003/22665]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Liu LZ,Jiang BZ. Crystallization of micelles and matrix in dilute diblock copolymer/homopolymer solutions[J]. journal of polymer science part b-polymer physics,1998,36(16):2961-2970.
APA	Liu LZ,&Jiang BZ.(1998).Crystallization of micelles and matrix in dilute diblock copolymer/homopolymer solutions.journal of polymer science part b-polymer physics,36(16),2961-2970.
MLA	Liu LZ,et al."Crystallization of micelles and matrix in dilute diblock copolymer/homopolymer solutions".journal of polymer science part b-polymer physics 36.16(1998):2961-2970.