Thermal properties of isotactic polypropylene degraded with gamma irradiation

被引：51
|
作者：
Krupa, I
Luyt, AS
机构：
[1] Univ North Qwa Qwa, Sch Chem Sci, ZA-9866 Phuthadithaba, South Africa
[2] Slovak Acad Sci, Inst Polymer, Bratislava, Slovakia
来源：
POLYMER DEGRADATION AND STABILITY | 2001年 / 72卷 / 03期
关键词：
polypropylene; gamma irradiation; degradation; DSC; TGA;
D O I：
10.1016/S0141-3910(01)00052-0
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
We discuss some thermal properties, as well as the thermal stability, of irradiated isotactic polypropylene. Sol-gel analysis showed that, despite the fact that irradiation doses were relatively high, no gel was formed. Values for DSC melting temperature, specific enthalpy of melting, crystallization temperature and crystallization enthalpy are different for the first and second scan, but the trend was similar. The melting temperature and specific melting enthalpy decreased with an increase in irradiation dose. TGA results showed that irradiation lowered the thermal stability of PP. (C) 2001 Elsevier Science Ltd. All rights reserved.
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页码：505 / 508
页数：4
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