Compatibility-tuned distribution of nanoparticles in co-continuous rubber structures toward microwave absorption enhancement

Li, Lefan and Zhao, Pengfei and Luo, Yongyue and Yu, Heping and Tao, Jinlong and He, Dongning and Gong, Wei and Li, Dejun and Peng, Zheng and Wang, Zhifen (2017) Compatibility-tuned distribution of nanoparticles in co-continuous rubber structures toward microwave absorption enhancement. RSC Advances, 7 (2). pp. 1093-1100.

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Development of novel and versatile approaches to engineer composites with light density, broad effective bandwidth and high microwave absorption (MA) capacity is of great importance. Here, co-continuous natural rubber/epoxidized natural rubber (NR/ENR) blends with a selective distribution of conductive carbon black nanoparticles (CCBs), have been fabricated by tow-roll mixing. ENR with abundant epoxide groups shows inferior wettability to CCB than NR, which is responsible for the preferential location of CCB in the NR/ENR blend. Increasing the epoxidation level of ENR promotes the preferential location of CCB and creates stronger dielectric loss, thus enhancing the MA properties of CCB/NR/ENR composites. When the epoxidation level increases to 40 mol%, the MA capacity of the composite has been significantly enhanced by 40%. Meanwhile, the qualified frequency bandwidth (RL < −10 dB) of composites with ENR is 85% broader than that of CCB/NR composites. Such a novel approach of compatibility-tuned nanoparticles distribution in co-continuous rubber blends will significantly promote the multi-functional use of rubber and carbonaceous resources.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version made available under Creative Commons Attribution License.
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials
Date Deposited: 10 Jul 2017 04:45
Last Modified: 23 Apr 2018 03:22
Uncontrolled Keywords: microwave absorbing materials: elastomeric composites; dielectric or/and magnetic loss nanoparticles
Fields of Research : 10 Technology > 1007 Nanotechnology > 100708 Nanomaterials
03 Chemical Sciences > 0303 Macromolecular and Materials Chemistry > 030302 Nanochemistry and Supramolecular Chemistry
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970103 Expanding Knowledge in the Chemical Sciences
Identification Number or DOI: 10.1039/c6ra26155h

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