Abstract
Poly(vinyl chloride) plastisol-based foams were prepared with epoxidized soybean oil and residual low cost fillers. Microstructural characterizations using scanning electron microscopy were carried out to understand the microcellular morphology. Absence of epoxy groups in Fourier transform infrared spectroscopy spectra of epoxidized soybean oil-modified–poly(vinyl chloride) plastisol foams indicated the occurrence of ring opening reaction between poly(vinyl chloride) plastisol and epoxidized soybean oil, signifying epoxidized soybean oil’s role as HCl scavenger. X-ray diffraction study indicated increased crystallinity of filler modified poly(vinyl chloride) plastisol/epoxidized soybean oil foams, suggesting their role as possible nucleating agents. Foams with fillers also showed reduced water uptake, which were in good agreement with other characterizations.
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