Thermal behaviour of poly(allyl azide)

被引:26
作者
Gaur, B [1 ]
Lochab, B [1 ]
Choudhary, V [1 ]
Varma, IK [1 ]
机构
[1] Indian Inst Technol, Ctr Polymer Sci & Engn, New Delhi 110016, India
关键词
curing studies; dipolarophiles; poly(allyl azide); poly(allyl chloride); thermal behaviour triazole;
D O I
10.1023/A:1022843607664
中图分类号
O414.1 [热力学];
学科分类号
摘要
The paper describes the synthesis of low molecular mass poly(allyl chloride) (PAC) (M-n=856-3834 g mol(-1)) using Lewis acid (AlCl3, FeCl3, TiCl4) and Al powder. Branching in PAC was indicated on the basis of elemental analysis and H-1-NMR spectroscopy. Azidation of PAC could be carried out at 100degreesC by using NaN3 and DMSO as solvent. Curing of poly(allyl azide) (PAA) by cyclic dipolar addition reaction with EGDMA (ethylene glycol dimethacrylate, 5-45 phr) was investigated by differential scanning calorimetry and structure of cured polymer was confirmed by FTIR. A two-step mass loss was exhibited by uncured and cured PAA in nitrogen atmosphere. A mass loss of 20-28% (155-274degreesC) and 50-61% (330-550degreesC) was observed.
引用
收藏
页码:467 / 479
页数:13
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