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.
|出版ステータス||出版済み - 12月 1 2005|
|イベント||54th SPSJ Annual Meeting 2005 - Yokohama, 日本|
継続期間: 5月 25 2005 → 5月 27 2005
|その他||54th SPSJ Annual Meeting 2005|
|Period||5/25/05 → 5/27/05|
!!!All Science Journal Classification (ASJC) codes