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Thermal decomposition behavior of naphthalene-labeled polyethylene

✍ Scribed by Xigao Jin; Yi Shi; Li Yao; Liusheng Chen; Jianrong Feng; Mitchell A. Winnik


Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
419 KB
Volume
34
Category
Article
ISSN
0887-624X

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✦ Synopsis


Pyrolysis-GC/mass spectrometry experiments reveal that naphthalene groups attached to maleated polyethylene as the 1-naphthylethyl ester are stable for relatively long periods of time a t 170Β°C. Decomposition can be detected for samples heated for 2.0 min a t 2OO0C, but even a t t h a t temperature, the extent of decomposition is very small. At higher temperatures, two of the decomposition products from the labeled polymer are readily understood: 1-vinylnaphthalene and 1-naphthylethanol can form by reactions that are well-precedented in the organic chemistry literature. At 200Β°C, only naphthalene is formed, which requires scission of the bond between the naphthyl ring and the C, carbon of the ethyl group. We suggest two possible pathways for this reaction. 0 1996


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