Embrittlement of polypropylene fibre during thermal oxidation

被引：28

作者：

Fayolle, Bruno ^{[1
]}

Richaud, Emmanuel ^{[1
]}

Verdu, Jacques ^{[1
]}

Farcas, Fabienne ^{[2
]}

机构：

[1] ENSAM, UMR 8006, Lab Ingn Mat, F-75013 Paris, France

[2] Lab Cent Ponts & Chaussees Serv Physicochim Mat, F-75015 Paris, France

来源：

JOURNAL OF MATERIALS SCIENCE | 2008年 / 43卷 / 03期

关键词：

DEGRADATION; RESISTANCE; TOUGHNESS; POLYMERS;

D O I：

10.1007/s10853-007-2242-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Polypropylene (PP) fibres for geotextile applications were oxidized under two exposure conditions: 110 degrees C in air under atmospheric pressure and 80 degrees C under pure oxygen at 5 MPa pressure corresponding to two distinct ISO standards. Fibre ageing has been monitored by rheometric molar mass, WAXS and tensile measurements. The results put in evidence the existence of predominant chain scission, chemicryrallization and embrittlement, the latter occurring at a structural state (M-W=130 kg mol(-1), crystallinity ratio 80%) almost independent of exposure conditions. The relationships between all processes are discussed.

引用

页码：1026 / 1032

页数：7

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