INFLUENCE OF IMPERFECTIONS ON THE DISORDERING OF BLOCK-COPOLYMER CYLINDERS

被引：39
|
作者：
BALSARA, NP
DAI, HJ
KESANI, PK
GARETZ, BA
HAMMOUDA, B
机构：
[1] POLYTECH INST NEW YORK,DEPT CHEM,BROOKLYN,NY 11201
[2] NIST,GAITHERSBURG,MD 20899
来源：
MACROMOLECULES | 1994年 / 27卷 / 25期
关键词：
D O I：
10.1021/ma00103a023
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Small-angle neutron scattering and optical birefringence were used to study the disordering transition of a cylindrically ordered block copolymer material. It was found that the disordering temperature of shear-oriented ''single crystals'' was 62 degrees C, while that of imperfect, granular samples formed under quiescent conditions was 49 degrees C. In sheared samples where the imperfections were partially removed, coexistence of ordered and disordered regions was observed at temperatures between 49 and 62 degrees C.
引用
收藏
页码：7406 / 7409
页数：4
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