Journal
PROGRESS IN ORGANIC COATINGS
Volume 144, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.porgcoat.2020.105661
Keywords
Self-healing; Silicone; Cross-linked network; Adhesion affinity
Funding
- Shandong Provincial Natural Science Foundation [ZR2018MB034, ZR2019QB019]
- National Natural Science Foundation of China [51872150]
- Talent Fund of Shandong Collaborative Innovation Center of Eco-Chemical Engineering [XTCXQN11]
- Open Subject Fund of State Key Laboratory Base for Eco-Chemical Engineering in College of Chemical Engineering [STHG1804]
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Herein, we report an innovative cross-linked network of silicone elastomer with good stretchability, thermal stability and autonomous self-healing. This type of elastomers was easily prepared by aminopropyl terminated polydimethylsiloxane (A-PDMS), thioctic acid (TA) and 2,6-pyridine dialdehyde (Py). As we know, TA was firstly incorporated into the reversible network of silicones to supply the dynamic disulfide bonds and endow the self-healing properties. Py was also introduced into the network which acted as the metal-ligand binding sites. Consequently, silicone elastomers with three different types of chemical interactions including the disulfide bonds, hydrogen bonds and metal-ligand bonds were obtained. Especially, they possessed good anticorrosion and strong adhesion affinity. We expected this type of silicone elastomers could be applied into the soft robotics, wearable electronics and stretchable circuit constructed.
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