Water-induced self-healing materials were prepared by the hybridization of a water-soluble polymer, poly(vinyl alcohol), with a smectite clay by mixing in an aqueous media and subsequent casting. Without using chemical crosslinking agent or heat treatment, the poly(vinyl alcohol)-clay hybrid was adhered strongly on the substrate to show self-healing when immersing in water (25°C). The healing was completed within 1 min by soaking a damaged poly(vinyl alcohol)-clay film under such conditions as in cold water (2°C), simulated seawater (0.6 M NaCl), steam, HCl solution (pH=1) and NaOH solution (pH=14). The healing was seen repeatedly for 10 times.

Water-induced self-healing hybrid material by a simple hybridization of poly(vinyl alcohol) with smectite clay in an aqueous media

ACS Spring Meeting 2021

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