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- W2003089043 abstract "Thermal analysis, infrared spectroscopy, and gel-permeation chromatography studies were undertaken to determine the behavior of poly(p-xylylene-m-carborane) at elevated temperature. Results show that the polymer softened at about 200°C, probably because of polymorphism. Chlorine atoms from chain ends also ruptured at this temperature. This initiated subsequent hydrogen abstraction and thermal oxidation reactions that resulted in the decomposition of the polymer. The process of degradation closely parallels the thermal oxidation of polybenzyl and other polymers with readily activated methylene groups. The volatile products that formed at 300 and 400°C were produced because of the cleavage of methylene groups and their oxidation products. Larger polymer segments containing phenylene and m-carborane groups were evolved at higher temperatures. Some crosslinking occurred when the polymer was heated in air at temperatures above 200°C. The degree of polydispersity of the polymer fraction that remained soluble in organic solvents increased with corresponding increase of temperature." @default.
- W2003089043 created "2016-06-24" @default.
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- W2003089043 date "1970-04-01" @default.
- W2003089043 modified "2023-09-25" @default.
- W2003089043 title "Thermal behavior of poly-p-xylylene-m-carborane" @default.
- W2003089043 doi "https://doi.org/10.1002/pol.1970.150080411" @default.
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