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A High Stretchable and Self–Healing Silicone Rubber with Double Reversible Bonds
Author(s) -
Yan Hao,
Dai Shengping,
Chen Yuewen,
Ding Jianning,
Yuan Ningyi
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201902244
Subject(s) - materials science , elastomer , silicone rubber , self healing , silicone , composite material , self healing material , medicine , alternative medicine , pathology
It is a challenge to synthesize silicone rubber with high stretchability and rapid self–healing ability without external stimuli. This article reports on a new class of self–healing poly(dimethylsiloxane)(PDMS) elastomer fabricated by introducing double reversible bonds (imine and hydrogen bonds) into silicone chains. Through reasonable structural design, the silicone rubber with high‐efficiency self‐healing ability was produced. The as–prepared PDMS elastomer films exhibited high stretchability (>4000%), good transparency (>80%) and fast self–healing efficiency (3 h at room temperature a healing efficiency of 93%). It could also be healed at low temperature (‐20 °C) and processed cyclically. In addition, we combined carbon nanotube films with this elastomer to prepare a flexible and stretchable capacitive sensor through a simple process.