A comparative radiation degradation of some aromatic polyesters

被引：11

作者：

Aliev, Roustam ^{[1
]}

Navarro-Gonzalez, Rafael

Medina, Rosa

机构：

[1] Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Mexico City 04510, DF, Mexico

[2] Univ Nacl Autonoma Mexico, Inst Invest Mat, Mexico City 04510, DF, Mexico

来源：

POLYMER BULLETIN | 2006年 / 57卷 / 04期

关键词：

polyesters; gamma-irradiation; gas formation; degradation; radiation-chemical yields;

D O I：

10.1007/s00289-006-0571-x

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A comparative investigation of radiation degradation of poly(1,4-butylene terephthalate), PBT; poly(ethylene terephthalate), PET; and poly(ethylene 2,6-naphthalene-dicarboxylate), PEN, was carried out. These polyesters were irradiated under vacuum at doses from 0.5 to 4 MGy. Data on solubility of the irradiated polyesters revealed absence of cross-linking. Molecular weights of PBT and PET decreased noticeably after irradiation, and radiation-chemical yields of destruction were quantified. NMR and UV spectra revealed changes in molecular structure upon irradiation of PBT. Efficiency and mechanism of radiation degradation of PBT, PET and PEN were discussed.

引用

页码：499 / 504

页数：6

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