Effect of Homopolymer Molecular Weight on Order-Order Transition in Block Copolymer and Homopolymer Blends

被引：2
|
作者：
Lee, Sang-In [2 ]
Zin, Wang-Cheol [2 ]
Ahn, Jong-Hyun [1 ]
机构：
[1] Sungkyunkwan Univ, SKKU Adv Inst Nanotechnol, Sch Adv Mat Sci & Engn, Suwon 440746, South Korea
[2] Pohang Univ Sci & Technol, Dept Mat Sci & Engn, Pohang 790784, South Korea
来源：
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2009年 / 9卷 / 12期
关键词：
Block Copolymer; Order-Order Transition; Small-Angle X-ray Scattering; DIBLOCK COPOLYMER; PHASE-BEHAVIOR; COPOLYMER/HOMOPOLYMER BLENDS; SPHERICAL MICRODOMAINS; TRIBLOCK COPOLYMER; BINARY BLENDS; MIXTURES; POLYISOPRENE; DISORDER; POLYSTYRENE;
D O I：
10.1166/jnn.2009.1783
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The order-order transition temperature (T-OOT) in blends of poly(styrene-b-isoprene-b-styrene) (S-I-S) triblock copolymer and polyisoprene (PI) homopolymer was investigated by using synchrotron small-angle X-ray scattering (SAXS). Pure triblock copolymer undergoes an order-order transition (OOT) from hexagonally ordered cylinder (HEX) to body centered cubic (BCC) phases. In order to investigate the effect of the molecular weight of the added homopolymer on T-OOT of the triblock copolymer, various low-molecular-weight PI homopolymers were studied. The results revealed that T-OOT was affected by the PI molecular weight. T-OOT was reduced for blends having low-molecular-weight PI.
引用
收藏
页码：7499 / 7502
页数：4
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