Dynamic Mechanical and Dielectric Properties of Poly(vinylidene fluoride) and Epoxidized Natural Rubber Blends

Subhan Salaeh; Gisèle Boiteux; Olivier Gain; Philippe Cassagnau; Charoen Nakason

doi:10.4028/www.scientific.net/AMR.844.97

Paper Titles

Influence of Curing Systems on Mechanical, Dynamic, and Morphological Properties of Dynamically Cured Epoxidized Natural Rubber/ Copolyamide Blends
p.81

The Method to Produce Light-Color Natural Rubber
p.85

Thermoplastic Natural Rubber of Co-Polyamide: Effect of Blend Ratios on Mechanical, Swelling, Dynamic and Morphological Properties
p.89

Influence of Blend Proportions on Properties of ENR-25/TPU Simple Blends
p.93

Dynamic Mechanical and Dielectric Properties of Poly(vinylidene fluoride) and Epoxidized Natural Rubber Blends
p.97

Role of Gel Content on the Structural Changes of Masticated Natural Rubber
p.101

Effect of Mixing Temperature on the Mechanical Dynamic and Morphological Properties of Maleated Natural Rubber/Copolyester Blends
p.105

Mixing Methods Influencing on Properties of Epoxidized Natural Rubber/Polypropylene Thermoplastic Vulcanizates
p.109

Investigation of Structure-Properties Relationship of High Performance TPV Based on ENR/TPU
p.113

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Dynamic Mechanical and Dielectric Properties of Poly(vinylidene fluoride) and Epoxidized Natural Rubber Blends

Abstract:

The blending of semi-crystalline polymer, poly (vinylidene fluoride), (PVDF) and uncross-linked elastomer epoxidized natural rubber with 50 mol% epoxide (ENR-50) blends were prepared in an internal mixer by melt mixing process. Dynamic mechanical analysis (DMA) and dielectric analysis (DEA) of PVDF/ENR-50 blends were investigated. It was found that the pure PVDF showed higher storage modulus than that of the pure ENR-50 and storage modulus of the PVDF/ENR blends decrease with increasing ENR-50 content. Furthermore, PVDF showed two relaxation peaks correspond to α_a-relaxation and α_c-relaxation, while ENR-50 showed only a single relaxation that is related to α-relaxation or glass transition temperature (T_g). Two relaxation peaks were observed in the PVDF/ENR-50 blends due to phase separation. However, the maximum peak of relaxation shifted toward to higher and lower temperature compared with the pure components which indicates the partial miscible blends. Moreover, at high temperature, the neat polymer and blends showed a sharp increase of loss factor (ε) that correspond to conductivity and/or Maxwell-Wagner-Sillar (MWS) process.