Responsive solids from cross-linked block copolymers

被引：17
|
作者：
Hahn, H [1 ]
Eitouni, HB
Balsara, NP
Pople, JA
机构：
[1] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA
[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA
[3] Stanford Linear Accelerator Ctr, Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA
来源：
PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 15期
关键词：
D O I：
10.1103/PhysRevLett.90.155505
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Novel responsive solids were prepared by randomly cross-linking the polyisoprene chains of a disordered polystyrene-polyisoprene block copolymer. Our experiments show that block copolymer chains, composed of hundreds of repeat units, can undergo reversible order-disorder transitions despite the quenched randomness that arises due to the attachment of one of the blocks to a cross-linked network. The structure, properties, and phase behavior of these materials are determined by a delicate interplay between the density of cross-links and the nature of the ordered state.
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页数：4
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