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 language | English |
|---|---|
| Pages (from-to) | 4607-4614 |
| Number of pages | 8 |
| Journal | Macromolecules |
| Volume | 41 |
| Issue number | 13 |
| DOIs | |
| Publication status | Published - Jul 8 2008 |
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ASJC Scopus subject areas
- Materials Chemistry
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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 journal › Article
}
TY - JOUR
T1 - Preparation of poly(4-phthalimide) nanoribbon by reaction-induced crystallization
AU - Wakabayashi, Kanji
AU - Uchida, Tetsuya
AU - Yamazaki, Shinichi
AU - Kimura, Kunio
PY - 2008/7/8
Y1 - 2008/7/8
N2 - 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.
AB - 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.
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U2 - 10.1021/ma800874w
DO - 10.1021/ma800874w
M3 - Article
VL - 41
SP - 4607
EP - 4614
JO - Macromolecules
JF - Macromolecules
SN - 0024-9297
IS - 13
ER -