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- Title
Single crystals of crystalline block copolymers formed in n-hexanol and methanol/DMF solutions: A comparative study.
- Authors
Zhuo, Wangqian; Li, Yanming; Zhang, Runke; Huang, Runsheng; Zhou, Jie; Tong, Zaizai; Jiang, Guohua
- Abstract
Lamellar single crystals of poly(E-caprolactone) (PCL)-based crystalline/liquid-crystalline block copolymer (BCP) were prepared from two methods: solution crystallization in n-hexanol as well as addition of methanol dropwise to BCP/DMF solution. The crystalline morphologies of PCL single crystals prepared at different temperatures were investigated. It was observed that welldeveloped single crystals were formed in n-hexanol at high crystallization temperatures, while low crystallization temperatures favored to fabricate well-developed nanosheets in methanol/DMF. Annealing at the melting temperature of single crystals yielded the crystalline seeds and unimers in n-hexanol, while it formed spherical micelles in methanol/DMF system. As a result, the size of single crystals in n-hexanol could be tuned by addition of different ratios of unimer/seed.
- Subjects
SINGLE crystals; BLOCK copolymers; HEXANOLS; METHANOL; COPOLYMERS; CRYSTALLIZATION; MICELLES
- Publication
Journal of Applied Polymer Science, 2017, Vol 134, Issue 29, p1
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/APP.45089