Preparation of poly(4-phthalimide) nanoribbon by reaction-induced crystallization

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18 Citations (Scopus)

Abstract

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 1-ethyl 4-aminophthalate (IEAP), 2-ethyl 4-aminophthalate, 1-hexyl 4-aminophthalate, and 2-hexyl 4-aminophthalate were carried out at 330°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 IEAP at a concentration of 2.0% for 24 h were averagely 12 μm in length, 150 nm 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.

Original languageEnglish
Pages (from-to)4607-4614
Number of pages8
JournalMacromolecules
Volume41
Issue number13
DOIs
Publication statusPublished - Jul 8 2008

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Nanoribbons
Carbon Nanotubes
Crystallization
Oligomers
Polymerization
Isomers
Imides
Thermodynamic stability
Monomers
Crystals
4-aminophthalate
phthalimide

ASJC Scopus subject areas

  • Materials Chemistry

Cite this

Preparation of poly(4-phthalimide) nanoribbon by reaction-induced crystallization. / Wakabayashi, Kanji; Uchida, Tetsuya; Yamazaki, Shinichi; Kimura, Kunio.

In: Macromolecules, Vol. 41, No. 13, 08.07.2008, p. 4607-4614.

Research output: Contribution to journalArticle

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