Investigation on Dynamic Mechanical Properties of Crosslinked Poly(styrene-co-divinylbenzene) Bulk Copolymers: Effect of Divinylbenzene Content
Source abstract
Abstract
The crosslinked poly(styrene-co-divinylbenzene) (CL-p(St-DVB)) bulk copolymers were fabricated by free-radical bulk crosslinking copolymerization (FCC) with styrene as monomer and divinylbenzene (DVB) as crosslinker. The viscoelastic properties of the crosslinked copolymers were investigated by dynamic mechanical thermal analysis (DMTA) as a function of temperature and frequency. The Arrhenius relationship was employed to calculate the activation energy of the α-relaxation transition for the specimens. The results revealed that the storage modulus (E′) of the copolymer networks enhanced with the rising DVB content. The loss tangent (tanδ) peaks were lower and broader. The dynamic mechanical responses of the CL-p(St-DVB) networks were also strongly depended on the test frequency.
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Research context
OpenAlex topics: Polymer Nanocomposites and Properties · Polymer crystallization and properties · Polymer composites and self-healing
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Material Science and Engineering, Wuhan University of Technology, Wuhan, 430070, P.R. China
712 Research Institute, China Shipbuilding Industry Corporation, Wuhan, 430064, P.R. China
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