Solid state self-healing system: Effects of using PDGEBA, PVC and PVA as linear healing agents

The solid state self-healing system was obtained by employing a thermosetting epoxy resin, into which a thermoplastic is dissolved. In this study, the effect of healing efficiency was investigated by using different thermoplastic polymers which are poly(bisphenol-A-co-epichlorohydrin), polyvinyl chl...

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Bibliographic Details
Main Authors: Muhamad Noor Nabilah, Suzeren, Jamil Mohd, Abdullah Shahrum
Format: Conference Proceeding
Language:English
Subjects:
Bisphenol A
Chain mobility
Chemical industry
Curing agents
Dynamic mechanical analysis
Epichlorohydrin
Epoxy resins
Fourier transforms
Glass transition temperature
Impact tests
Morphology
Phase separation
Polymers
Polyvinyl alcohol
Polyvinyl chloride
Resins
Solid state
Solubility parameters
Thermosetting resins
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Summary:The solid state self-healing system was obtained by employing a thermosetting epoxy resin, into which a thermoplastic is dissolved. In this study, the effect of healing efficiency was investigated by using different thermoplastic polymers which are poly(bisphenol-A-co-epichlorohydrin), polyvinyl chloride and polyvinyl alcohol as healing agents. Healing was achieved by heating the fractured resins to a specific temperature i.e. above their glass transition temperature (Tg) which obtained from dynamic mechanical analysis (DMA) to mobilize the polymeric chains of the healing agent. The curing reaction in the epoxy resins were characterized by means of Fourier transform infrared spectroscopy (FTIR). Izod impact test was been performed to demonstrate self-healing of the different specimens. Under test, it was found that healable resin with PDGEBA has highest healing efficiency followed by PVC and PVA, with 63%, 35% and 18% of average percentage healing efficiencies respectively. These results are due to the different solubility parameters of the thermoset/network and thermoplastic polymer which led to the phase separation. Morphological studies prove the fracture-healing process and morphological properties of the resins.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4895208