Abstract
As one of the most widely used plasticizers in the market, phthalate plasticizers have been banned in European countries and regions due to their poor migration and derived from petroleum-based raw materials. Therefore, using clean and renewable resources to produce high-stability bio-based environmentally friendly plasticizers is an urgent need currently. In this work, a new type of high-stability bio-based plasticizer was obtained by a four-step reaction with ricinoleic acid as main raw material, and its structure was characterized and identified by FT-IR and 1H NMR. Subsequently, ricinoleate plasticizer, commercially available dioctyl phthalate (DOP), and bis(2-ethylhexyl) adipate (DOA) were added to prepare polyvinyl chloride (PVC) films for performance comparison. According to the TG results, the Ti (initial degradation temperature) of PVC films plasticized with ricinoleate plasticized was 40 ℃ higher than that of DOA and DOP. In addition, the tensile results showed that the ricinoleate could be used as a substitute for DOA, indicating its excellent plasticizing efficiency and mechanical properties. More importantly, ricinoleate plasticized PVC exhibited the ranking migration stability in various environments, lower glass transition temperature in DMA analysis. All the results demonstrated that compared with DOA and DOP, the ricinoleate has a better comprehensive performance, which provided a new way for the rational use of renewable resources to prepare environmentally friendly plasticizers.
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