Sustainable, electrically-conductive bioepoxy nanocomposites

POLYMER

卷:107

Article

Varghai, Daniel¹  Maiorana, Anthony³  Meng, Qingkai²  Gross, Richard A.³  Manas-Zloczower, Ica² 

[1] Case Western Reserve Univ, Biomed Engn, 10900 Euclid Ave, Cleveland, OH 44106 USA

[2] Case Western Reserve Univ, Dept Macromol Sci & Engn, 10900 Euclid Ave, Cleveland, OH 44106 USA

[3] Rensselaer Polytech Inst, Dept Chem & Chem Biol, 110 8th St, Troy, NY 12180 USA

关键词: Biobased epoxy;    Carbon nanotubes;    Percolation;    Electrical conductivity;    Nanocomposite;    Dispersion;   

DOI  :  10.1016/j.polymer.2016.11.028

来源: Elsevier

【 摘 要 】

Biobased epoxy nano-composites composed of untreated multi-wall-carbon-nanotubes (MWCNT) and diphenolic acid-derived biobased epoxy: diglycidyl ether of diphenolate n-butyl ester (DGEDP-Bu), were fabricated. Electrical, theological, and mechanical percolation thresholds were compared between bio-based and commercial bisphenol A (DGEBA) epoxy composites. For both epoxies, nanocomposites loaded with 0.05-0.2 wt % MWCNT's exhibited electrical and rheological percolation at 0.05 wt % and 0.2 wt % respectively. DMA and tensile results revealed that DGEDP-Bu composites exhibited equivalent or superior properties to DGEBA composites. With 0.2 wt % MWCNT's, DGEDP-Bu nanocomposites exhibited 68% higher electrical conductivity and a three-fold higher rheological yield stress than those made from DGEBA. Rheological characterization corroborated that continuous MWCNT networks are formed within epoxies between 0.1 and 0.2 wt % MWCNT's. Moreover, upon MWCNT loading, DGEDP-Bu demonstrates equal mechanical performance and better electrical conductivity than DGEBA. (C) 2016 Elsevier Ltd. All rights reserved.

【 授权许可】

Free