Effect of homopolymer molecular weight on order-order transition in block copolymer and homopolymer blends

Sang In Lee, Wang Cheol Zin, Jong Hyun Ann

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The order-order transition temperature (T ooT) in blends of poly(styrene-to-isoprene-b-styrene) (S-l-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.

Original languageEnglish
Pages (from-to)7499-7502
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Volume9
Issue number12
DOIs
Publication statusPublished - 2009 Dec 1

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

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