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Enhancement of Mechanical and Self‐Healing Performance in Multiwall Carbon Nanotube/Rubber Composites via Diels–Alder Bonding
Author(s) -
Kuang Xiao,
Liu Guoming,
Dong Xia,
Wang Dujin
Publication year - 2016
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201500425
Subject(s) - materials science , natural rubber , composite material , nanocomposite , toughness , self healing , carbon nanotube , bifunctional , composite number , styrene butadiene , maleimide , covalent bond , polymer , styrene , copolymer , organic chemistry , medicine , chemistry , alternative medicine , pathology , catalysis
Mechanically robust and self‐healing rubbers are highly desired to satisfy the increasing demand of high‐performance smart tires and related materials. Herein, a self‐healing rubber nanocomposite with enhanced mechanical and self‐healing performance based on Diels–Alder chemistry has been investigated. The furfuryl grafted styrene‐butadiene rubber and furfuryl terminated MWCNT (MWCNT‐FA) are reacted with bifunctional maleimide to form a covalently bonded and reversibly cross‐linked rubber composite. Obvious reinforcing effect is obtained at high cross‐linking density. Over 200–300% increase in the Young's modulus and toughness can be achieved in the rubber nanocomposites with 5 wt% MWCNT‐FA. Meanwhile, the healing efficiency increased with MWCNT‐FA content. MWCNT‐FA plays dual roles of effective reinforcer and a kind of healant.