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Sustainable synthesis of bio?based hyperbranched ester and its application for preparing soft polyvinyl chloride materials

In this study, bio?based hyperbranched ester was synthesized from castor oil. Chemical structure of the obtained bio?based hyperbranched ester was characterized with fourier transform infrared (FT?IR) and 1H nuclear magnetic resonance(NMR) spectra. Soft polyvinyl chloride(PVC) materials were prepared via thermoplastic blending at 160°C using bio?based hyperbranched ester as plasticizer. Performances including thermal stability, glass transition temperature(Tg), crystallinity, tensile property, solvent extraction resistance and volatility resistance of soft PVC materials cooperated with bio?based hyperbranched ester were investigated and compared with traditional plasticizer dioctyl phthalate(DOP). The results showed that bio?based hyperbranched ester enhanced thermal stability of PVC materials. Tg of PVC cooperated with bio?based hyperbranched ester reached 23°C lower than PVC/DOP materials of 28°C. Bio?based hyperbranched ester showed more excellent plasticizing effect, solvent extraction resistance and volatility resistance than DOP. The plasticizing mechanism was also discussed.This article is protected by copyright. All rights reserved.

» Author: Hanqing Tong, Jinping Hai

» Reference: doi:10.1002/pi.5730

» Publication Date: 27/10/2018

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This project has received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement n° [605658].

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