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Photocrosslinking of chlorinated polydimethylsiloxanes

✍ Scribed by Hiroshi Inoue; Shigemi Kohama


Publisher
John Wiley and Sons
Year
1986
Tongue
English
Weight
487 KB
Volume
32
Category
Article
ISSN
0021-8995

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✦ Synopsis


Photocrosslinking behavior of chlorinated polydimethylsiloxanes (CPDMS) has been studied. It was found that the viscous CPDMS were readily crosslinked to form the rubberlike materials on irradiation from a high pressure mercury lamp. The crosslinking mechanism was proposed on the basis of infrared spectroscopy. It was suggested that the photolysis of the carbonchlorine bond induced by the ultraviolet irradiation is a primary step for crosslinking, and is followed by mutual combination of SiCH2. radicals, eventually, to form the crosslinked C PDMS. The effect of halogens and atmosphere on the crosslinking was also discussed.


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