Abstract
A facile approach to synthesize silicone elastomers with good mechanical properties as well as high self-healing efficiency is reported in the present research. The silicone elastomer is synthesized through amino-ene Michael addition reaction, with amino groups from aminopropyl-terminated polydimethylsiloxane and acrylate groups from multifunctional acrylate monomer. Meanwhile, basic catalyst tetramethylammonium hydroxide is added into the elastomer to derive a dynamically crosslinked network. Tensile strength and break elongation of the synthesized elastomers are 1.08 ± 0.06 MPa and 206.10 ± 9.55%, respectively, indicating good mechanical properties of the elastomers. The fractured samples can recover 91% of their original strength after healing at 105 °C for 24 h. Moreover, the silicone elastomer in this work is recyclable due to the dynamic siloxane equilibration reaction.
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