2008年7月
Preparation of poly(4-phthalimide) nanoribbon by reaction-induced crystallization
MACROMOLECULES
- ,
- ,
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- 巻
- 41
- 号
- 13
- 開始ページ
- 4607
- 終了ページ
- 4614
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1021/ma800874w
- 出版者・発行元
- AMER CHEMICAL SOC
The morphology of poly(4-phthalimide) (PPI) crystals was examined by using reaction-induced crystallization of oligomers during solution polymerization. Polymerizations of alkyl 4-aminophthalates such as I-ethyl 4-aminophthalate (1EAP), 2-ethyl 4-aminophthalate, 1-hexyl 4-aminophthalate, and 2-hexyl 4-aminophthalate were carried out at 330 degrees C in a mixture of isomers of dibenzyltoluene without stirring. Nanoscale PPI ribbons having smooth surface were formed by the polymerizations of these monomers. The ribbons prepared from 1EAP at a concentration of 2.0% for 24 h were averagely 12 mu m in length, 150 urn in width, and 8 nm in thickness, in which the molecular chains aligned along the long axis of the ribbon. The phase-separated oligomers were fully cyclized imide oligomers, and this is of great importance for the formation of the ribbon. The obtained ribbons possessed high crystallinity and exhibited excellent thermal stability.
- リンク情報
- ID情報
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- DOI : 10.1021/ma800874w
- ISSN : 0024-9297
- eISSN : 1520-5835
- Web of Science ID : WOS:000257366200014