Magnetically actuated functional gradient nanocomposites for strong and durable bioinspired interfaces/surfaces

Zhengzhi Wang, Xiaoming Shi, Houbing Huang, Chenmin Yao, Wen Xie, Cui Huang, Ping Gu, Xingqiao Ma, Zuoqi Zhang, Long qing Chen

Research output: Contribution to conferencePaper

Abstract

Biological systems have evolved various functional gradients within interfacial and surface regions to fulfil unusual mechanically-challenging demands [1-3]. Exploring these design principles of nature materials into practice remains difficult, however, due to the lack of proper processing technique for analogous gradients within narrow regions. Here we report a facile and cost-effective technique enabling the construction of a variety of bioinspired gradient interfaces/surfaces that are not accessible using state-of-the-art technologies. This technique utilizes magnetic actuation to control spatial distribution of nano-sized reinforcements inside polymer matrices, being able to generate functional gradient nanocomposites (FGNCs) with controllable stiff-to-soft or soft-to-stiff transition within regions as narrow as 10 microns (Fig. 1). We demonstrate the robustness and universality of this technique by implementing the FGNCs into three mechanically-challenging applications: 1) functional gradient interlayer for strong, intact, and ultra-durable jointing between dissimilar materials; 2) functional gradient coating for hard, wear-resistant, and long-lasting surface protections; and 3) functional gradient pillars for flexible, structurally stable, and reusable biomimetic adhesives. The presented study opens a new route for designing and developing materials/structures with optimized performances by simply modifying the spatial distributions of material composition. This route can potentially be integrated into advanced manufacturing techniques [4, 5] and applied to numerous surface/interface fields to achieve unparalleled combinations among various critical properties.

Original languageEnglish (US)
StatePublished - Jan 1 2017
Event21st International Conference on Composite Materials, ICCM 2017 - Xi'an, China
Duration: Aug 20 2017Aug 25 2017

Other

Other21st International Conference on Composite Materials, ICCM 2017
CountryChina
CityXi'an
Period8/20/178/25/17

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Ceramics and Composites

Cite this

Wang, Z., Shi, X., Huang, H., Yao, C., Xie, W., Huang, C., Gu, P., Ma, X., Zhang, Z., & Chen, L. Q. (2017). Magnetically actuated functional gradient nanocomposites for strong and durable bioinspired interfaces/surfaces. Paper presented at 21st International Conference on Composite Materials, ICCM 2017, Xi'an, China.