Influence of Imperfections on the Disordering of Block Copolymer Cylinders

Autor:	Bruce A. Garetz, P. K. Kesani, Boualem Hammouda, H. J. Dai, Nitash P. Balsara
Rok vydání:	1994
Předmět:	Condensed Matter::Soft Condensed Matter Inorganic Chemistry Birefringence Materials science Polymers and Plastics Condensed matter physics Organic Chemistry Polymer chemistry Materials Chemistry Copolymer Neutron scattering Granular material
Zdroj:	Macromolecules. 27:7406-7409
ISSN:	1520-5835 0024-9297
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a26f9659487d14f8c95b6b80172b979c https://doi.org/10.1021/ma00103a023 Zobrazit plný text záznamu