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Electrical properties of chlorinated atactic polypropylene (CAPP) and PVC–DOP–CAPP system
Author(s) -
Mukherjee A. K.,
Patri M.
Publication year - 1990
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1990.070390707
Subject(s) - dissipation factor , electrical resistivity and conductivity , dielectric , materials science , polypropylene , plasticizer , volume (thermodynamics) , activation energy , composite material , dielectric loss , polymer chemistry , thermodynamics , chemistry , organic chemistry , electrical engineering , physics , optoelectronics , engineering
The electrical properties, such as dielectric properties and volume resistivity, of chlorinated atactic polypropylene(CAPP), obtained by thermal chlorination of APP, have been studied. The results show that dielectric constant, loss tangent, and volume resistivity of the chlorinated samples increase with the increase in degree of chlorination. The effect of CAPP as secondary plasticizer in the PVC–DOP system has also been studied. Dielectric study of PVC compounds shows a single relaxation peak, indicating no phase separation. In the case of PVC compounds, it has been observed that with the increase in CAPP content in PVC compounds dielectric constant and loss tangent decrease whereas volume resistivity increases. The increase in volume resistivity was further supported by the increase in activation energy value, obtained from volume resistivity vs. 1/ T plot.