Oxidation of stressed polyamide 6 film as measured by stress-chemiluminescence (SCL)

被引:13
作者
Jacobson, K
Stenberg, B [1 ]
Terselius, B
Reitberger, T
机构
[1] KTH, Dept Polymer Technol, SE-10044 Stockholm, Sweden
[2] Kristianstad Univ Coll, Sch Engn, SE-29121 Kristianstad, Sweden
[3] KTH, Dept Chem, SE-10044 Stockholm, Sweden
关键词
D O I
10.1016/S0141-3910(99)00035-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
The rate of oxidation of stressed polyamide 6 film strips was investigated by stress-chemiluminescence (SCL). The strips were exposed to 0, 8, 20, 40 and 60% of load at yield, respectively. No increase in oxidation rate could be found with load. The SCL results were compared with measurements of elongation at break, the carbonyl index, UV absorption, total luminescence intensity (TLI) and mass crystallinity of creep-aged specimens. The results of these measurements were all in line with the SCL results, i.e, no increase in oxidation rate due to stress could be found. In a second set of experiments the degree of oxidation of film strips exposed to 6 different loads was studied. Exposure amounting to 0, 40, 50, 60, 70 and 80% of load at yield, aged for 2 days at 120 degrees C, was compared with exposure to the same loads, aged for 4 weeks at 90 degrees C. No change in degree of oxidation due to stress could be found at either temperature. A small temperature profile in the oven during ageing did, however, result in differences in degree of oxidation. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:449 / 455
页数:7
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