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 language | English |
|---|---|
| Number of pages | 1 |
| Publication status | Published - Dec 1 2005 |
| Event | 54th SPSJ Annual Meeting 2005 - Yokohama, Japan Duration: May 25 2005 → May 27 2005 |
Other
| Other | 54th SPSJ Annual Meeting 2005 |
|---|---|
| Country | Japan |
| City | Yokohama |
| Period | 5/25/05 → 5/27/05 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
Cite this
Macromolecular radical crossover reaction of bisulfide-containing polymer in the presence of free-radical generators. / Kobashi, Yasuharu; Otsuka, Hidevuki; Takahara, Atsushi.
2005. Paper presented at 54th SPSJ Annual Meeting 2005, Yokohama, Japan.Research output: Contribution to conference › Paper
}
TY - CONF
T1 - Macromolecular radical crossover reaction of bisulfide-containing polymer in the presence of free-radical generators
AU - Kobashi, Yasuharu
AU - Otsuka, Hidevuki
AU - Takahara, Atsushi
PY - 2005/12/1
Y1 - 2005/12/1
N2 - 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.
AB - 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.
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