Influence of imperfections on the disordering of block copolymer cylinders

N. P. Balsara, H. J. Dai, P. K. Kesani, Bruce Garetz, B. Hammouda

Research output: Contribution to journalArticle

Abstract

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 °C, while that of imperfect, granular samples formed under quiescent conditions was 49 °C. In sheared samples where the imperfections were partially removed, coexistence of ordered and disordered regions was observed at temperatures between 49 and 62 °C.

Original languageEnglish (US)
Pages (from-to)7406-7409
Number of pages4
JournalMacromolecules
Volume27
Issue number25
StatePublished - Dec 5 1994

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Block copolymers
Defects
Neutron scattering
Birefringence
Single crystals
Temperature

ASJC Scopus subject areas

  • Materials Chemistry

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Balsara, N. P., Dai, H. J., Kesani, P. K., Garetz, B., & Hammouda, B. (1994). Influence of imperfections on the disordering of block copolymer cylinders. Macromolecules, 27(25), 7406-7409.

Influence of imperfections on the disordering of block copolymer cylinders. / Balsara, N. P.; Dai, H. J.; Kesani, P. K.; Garetz, Bruce; Hammouda, B.

In: Macromolecules, Vol. 27, No. 25, 05.12.1994, p. 7406-7409.

Research output: Contribution to journalArticle

Balsara, NP, Dai, HJ, Kesani, PK, Garetz, B & Hammouda, B 1994, 'Influence of imperfections on the disordering of block copolymer cylinders', Macromolecules, vol. 27, no. 25, pp. 7406-7409.
Balsara NP, Dai HJ, Kesani PK, Garetz B, Hammouda B. Influence of imperfections on the disordering of block copolymer cylinders. Macromolecules. 1994 Dec 5;27(25):7406-7409.
Balsara, N. P. ; Dai, H. J. ; Kesani, P. K. ; Garetz, Bruce ; Hammouda, B. / Influence of imperfections on the disordering of block copolymer cylinders. In: Macromolecules. 1994 ; Vol. 27, No. 25. pp. 7406-7409.
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