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Citation: Ni Shaoru, Liu Jingjiang, Liu Wenzhong. THE DIELECTRIC PROPERTIES OF AB CROSSLINKED POLYMERS BASED ON CASTOR OIL[J]. Chinese Journal of Applied Chemistry, ;1989, 6(2): 15-18. shu

THE DIELECTRIC PROPERTIES OF AB CROSSLINKED POLYMERS BASED ON CASTOR OIL

1.
Changchun Institute of Applied Chemistry, Academia Sinica

Received Date: 12 March 1988
Available Online: 8 July 1988

The dielectric relaxation measurements for some AB crosslinked polymers based on castor oil were carried out as a function of temperature from -180℃ to 140℃ at different frequencies. The multiple relaxation and phase behaviors of AB crosslinked polymers were investigated with the dielectric spectroscopic analysis.The two components showed compatibility or near compatibility based on the dielectric relaxation spectra.The secondary relaxation was attributed to the local motion of the chain segments of polyurethane component. The interfacial polarization of the AB crosslinked polymers was described according to a method deduced in our laboratory.The activation energies of interfacial polarizaticn,which are related to the size of domains and the interfacial interaction between different components as well as the flexibility of the molecular chain in these samples, were calculated.
- AB crosslinked polymers,
- Polyurethane based on castor oil,
- Dielectric property
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