Thermodynamics favoured preferential location of nanoparticles in co-continuous rubber blend toward improved electromagnetic properties. (July 2017)

• Record Type: Journal Article
• Authors: Li, Lefan; Wang, Zhongqi; Zhao, Pengfei; Luo, Yongyue; Liao, Lusheng; Xu, Kui; Li, Puwang; Wang, Zhifen; Peng, Zheng
• Is Part Of: European polymer journal. Volume 92(2017)
• Page Start: 275
• Page End: 286
• Publication Date: 2017-07
• Subjects: Elastomers -- Multifunctional composites -- Thermodynamics -- Structure-property relations; Polymers -- Periodicals; Polymerization -- Periodicals; Polymères -- Périodiques; Polymérisation -- Périodiques; Polymerization; Polymers; Periodicals; Electronic journals; 547.705
• DOI: 10.1016/j.eurpolymj.2017.05.005
• Languages: English
• ISSNs: 0014-3057

Abstract

Graphical abstract: Highlights: Preferential nanofillers location in co-continuous rubber blend has been achieved. The obtained CB/NR/ENR composites show superior electromagnetic properties. Possible structure-property model is proposed to illustrated attenuation mechanism. Abstract: Engineered blend structure with tailor-made distribution of nanoparticles is the prime requisite to obtain materials with extraordinary functional properties. Here, preferential location of carbon black (CB) has been achieved in a binary elastomeric bend based on natural rubber (NR) and epoxidized natural rubber (ENR). Meticulous investigation has been conducted via thermodynamic, microscopic and electromagnetic analysis in order to illustrate the morphology-promoted performance behaviors. It is found that the filler-rubber interfacial tensions difference induces the preferential localization of CB in NR/ENR blend, thus endowing the composites with lower electrical percolation (2.11 vol.%), higher microwave absorption capacity (−19.31 dB) and broader effective absorption bandwidth (2.96 GHz). Such improved electromagnetic properties are ascribed to the higher conduction loss, stronger dielectric relaxation and more interface scattering of CB/NR/ENR composites.