Issue 104, 2016, Issue in Progress

Preparation of poly(ester-imide) ribbons comprised of helical and non-helical blocks by copolymerization

Abstract

Helical ribbons of poly[4-(5-oxy-1,3-dioxoisoindoline-2-yl)benzoyl] (PODB) were previously prepared by the homo-polymerization of N-(4-carboxyphenyl)-4-acetoxyphthalimide (CAP) in aromatic solvents. The copolymerization of CAP and p-acetoxybenzoic acid (ABA) was examined to change the helical morphology. The helical morphology was extinguished by the copolymerization of a small amount of ABA at 280 °C at a concentration of 1.0% in aromatic solvent. Based on these results, ABA was added stepwise during the homo-polymerization of CAP. When a small amount of ABA was added, copolymer crystals comprised of helical and non-helical blocks were formed. The non-helical blocks grew on the PODB helical ribbons by the precipitation of co-oligomers. This result provides a novel method to control helical morphology by copolymerization.

Graphical abstract: Preparation of poly(ester-imide) ribbons comprised of helical and non-helical blocks by copolymerization

Article information

Article type
Paper
Submitted
08 Sep 2016
Accepted
15 Oct 2016
First published
26 Oct 2016

RSC Adv., 2016,6, 101995-102002

Preparation of poly(ester-imide) ribbons comprised of helical and non-helical blocks by copolymerization

T. Ohnishi, T. Uchida, S. Yamazaki and K. Kimura, RSC Adv., 2016, 6, 101995 DOI: 10.1039/C6RA22494F

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