NUCLEATION AND CRYSTALLIZATION OF H-SHAPED (PS)2PEG(PS)2 BLOCK COPOLYMERS

被引：5
|
作者：
Pan, Ying-ying [1 ,2 ]
Yu, Xi-fei [1 ]
Shi, Tong-fei [1 ]
An, Li-jia [1 ]
机构：
[1] Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Changchun Inst Appl Chem, Changchun 130022, Peoples R China
[2] Grad Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
CHINESE JOURNAL OF POLYMER SCIENCE | 2010年 / 28卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Block copolymers; Crystallization; Differential scanning calorimetry (DSC); H-shaped; Self-nucleation; OXIDE)-B-POLYSTYRENE DIBLOCK COPOLYMER; TRANSFER RADICAL POLYMERIZATION; LIVING ANIONIC-POLYMERIZATION; CRYSTAL ORIENTATION CHANGES; POLY(ETHYLENE OXIDE); SELF-NUCLEATION; TRIBLOCK COPOLYMERS; PHASE STRUCTURES; BEHAVIOR; POLYSTYRENE;
D O I：
10.1007/s10118-010-9025-x
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A series of H-shaped (PS)(2)PEG(PS)(2) block copolymers with different PS chain lengths were prepared. The influence of different confinements active on the crystallization and self-nucleation (SN) behavior of the PEG blocks was investigated by differential scanning calorimetry (DSC). When the content of the crystalline block was high, a classical SN behavior was obtained. The block copolymer with PEG content of 49% (by weight) showed a classical SN behavior with a narrow self-nucleation domain and had bimodal crystallization exotherms. When the PEG dispersed as separated microdomains in the block copolymer, the self-nucleation domain disappeared and only annealing was observed.
引用
收藏
页码：347 / 355
页数：9
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