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Dielectric and dynamic mechanical behaviors of 1,2‐polybutadienes
Author(s) -
Ni Shaoru,
Yu Fusheng,
Shen Lianfang,
Qian Baogong
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.1990.070410103
Subject(s) - dielectric , materials science , relaxation (psychology) , thermodynamics , cole–cole equation , range (aeronautics) , atmospheric temperature range , nuclear magnetic resonance , composite material , physics , psychology , social psychology , optoelectronics
The dielectric relaxation behavior of 1,2‐polybutadienes is analyzed in terms of the experimental data and master curves. The dielectric measurement data were fitted to the empirical relaxation time distribution model of Havriliak and Negami over a frequency range from 10 0 to 10 12 Hz. The constants of the WLF equation, C 1 and C 2 , were evaluated with T g at 100 kHz as a reference temperature for some samples, and the master curve of a sample was constructed. The dynamic mechanical measurements for a series of 1,2‐polybutadienes with different chain structure were performed over a temperature range from −150 to 50°C. A qualitative comparison of the dielectric and dynamic mechanical behaviors of 1,2‐polybutadienes has been made.