The thermal and thermo-oxidative degradation of poly(tetrahydrofuran) and its complexes with LiBr and LiI
β Scribed by L. Costa; M.P. Luda; G.G. Cameron; M.Y. Qureshi
- Book ID
- 108400534
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 164 KB
- Volume
- 67
- Category
- Article
- ISSN
- 0141-3910
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Poly(ethylene oxide) (PEO) of molecular weight (Mw) ca 5 x 106 and its complex with NaCNS have been thermally degraded at temperatures in the range 320-330 Β° . Examination of the polymeric residues shows that in both cases there is a precipitous decrease in M, during degradation consistent with a ra
TGA curves for the thermal decomposition of PS in nitrogen (dashed line) and air (solid line). Heating rates of 9.0 and 8.2 K N min -1 for nitrogen and air, respectively.
## Abstract In this study, 3,3β²βdinitrobenzidine was first reacted with excess isophthaloyl chloride to form a monomer with dicarboxylic acid end groups. Two types of aromatic dianhydride, [viz., pyromellitic dianhydride (PMDA) and 3,3β²,4,4β²βsulfonyldiphthalic anhydride (DSDA)] also were reacted wi