Macromolecular radical crossover reaction of bisulfide-containing polymer in the presence of free-radical generators

Yasuharu Kobashi, Hidevuki Otsuka, Atsushi Takahara

Research output: Contribution to conferencePaper

Abstract

The polymer incorporating exchangeable disulfide units in the main chain was synthesized and the reorganization behavior was investigated. 2-HydroxyethyldisuLfide was employed as diol monomer for poly condensation with adipoyl chloride to afford the corresponding polyester (Mn = 28400, Mw/Mn = 1.82). The mixture of the fractionated polyesters with high and low molecular weight showed two apparent peaks in the GPC profile. They were inked in anisole, sealed, and heated at 353 K in the presence or absence of free-radical generators. In the presence of 1 mol % BPO as a free-radical generator, the peaks of the mixture gradually fused into a unimodal peak with proceeding of reaction. In contrast, no significant change in GPC profiles was observed in the absence of free-radical generators. Therefore, the phenomenon can undoubtedly be attributed to the radical crossover reaction of disulfide units between the main chains triggered by free-radical generators.

Original languageEnglish
Number of pages1
Publication statusPublished - Dec 1 2005
Event54th SPSJ Annual Meeting 2005 - Yokohama, Japan
Duration: May 25 2005May 27 2005

Other

Other54th SPSJ Annual Meeting 2005
CountryJapan
CityYokohama
Period5/25/055/27/05

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Kobashi, Y., Otsuka, H., & Takahara, A. (2005). Macromolecular radical crossover reaction of bisulfide-containing polymer in the presence of free-radical generators. Paper presented at 54th SPSJ Annual Meeting 2005, Yokohama, Japan.