Thermal degradation of polyvinyl chloride

Varma, Indra K (1965) Thermal degradation of polyvinyl chloride. PhD thesis, University of Glasgow.

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The thermal degradation of polyvinylchloride has been investigated by several workers, and different mechanisms have boon suggested for the degradation. In the thermal degradation of ITC, hydrochloric acid is evolved and a coloured residue is loft, In the present work, the problem was tackled in four different ways. The main aim was to assign a definite mechanism for the degradation. Commercial polymer prepared by suspension method, Geon 111 (JLB-49) was used for these measurements. The influence of solvents on the degradation. was investigated by carrying out the dohydrochlorination in presence of different solvents, The acid evolved was estimated by titrating it against standard caustic soda solution, The solvents used wore, benzophepnone, dioctylphthala-te, dichloronaphthalene, benzyl alcohol, tritoluylphosphate and ethyl benzoate, it was observed that solvents have an influence on the dehydrochlorination, the rate being greatest in benzophenone and tritoluylphosphate. A attempt has been made to explain these effects. The activation energy in the temperature range 187-243

Item Type: Thesis (PhD)
Qualification Level: Doctoral
Additional Information: Adviser: W I Bengough
Keywords: Materials science
Date of Award: 1965
Depositing User: Enlighten Team
Unique ID: glathesis:1965-72371
Copyright: Copyright of this thesis is held by the author.
Date Deposited: 24 May 2019 15:12
Last Modified: 24 May 2019 15:12

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