Effects of poly(1,2‐propylene glycol adipate) and nano‐CaCO3 on DOP migration and mechanical properties of flexible PVC
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Abstract
Abstract Nano‐CaCO 3 was used as nano‐scale filler and poly(1,2‐propylene glycol adipate) (PPA) was used as polymeric plasticizer in flexible poly(vinyl chloride) (PVC) sheets for the partial replacement of di(2‐ethyl hexyl) phthalate (DOP) in this paper. The effect of PPA and nano‐CaCO 3 on restraining DOP migration was evaluated via extraction tests. The results showed that the introduction of nano‐CaCO 3 can decrease the extraction rate of DOP in the PVC matrix. The tensile strength and elongation at break of CaCO 3 ‐1/PPA‐20/DOP‐30/PVC were similar to those of DOP‐50/PVC, and CaCO 3 ‐1/PPA‐20/DOP‐30/PVC exhibited the superior suppression of DOP migration compared with DOP‐50/PVC. Thermogravimetry analysis (TGA) indicated that the addition of nano‐CaCO 3 effectively improved the thermal stability of the nanocomposites. Therefore, the combination of PPA and nano‐CaCO 3 is an effective approach to suppress the migration of DOP. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
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