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Preparation and Properties of PLA/MRPs Emulsion Film
Received:August 17, 2020  
DOI：10.11980/j.issn.0254-508X.2020.11.004
Key Words:MRPs  Pickering emulsion polymerization  oxidation resistance  mechanical properties
Fund Project:辽宁省教育厅科学研究项目（J2020040）；制浆造纸工程国家重点实验室开放基金资助项目（201802）。
Author NameAffiliationPostcode
XIE Yitong College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, Liaoning Province, 116034 116034
WANG Yining College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, Liaoning Province, 116034 116034
LYU Yanna College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, Liaoning Province, 116034 116034
WANG Haisong College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, Liaoning Province, 116034 116034
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Abstract:Maillard reaction products （MRPs） were prepared by reaction between alkali-soluble hemicellulose xylan and zein， then Pickering emulsion polymerization and compression molding method were used to prepare PLA/MRPs emulsion films， in which MRPs nanoparticles solution was as water phase， and PLA/DCM was as oil phase. The morphology， antioxidant properties and mechanical properties of the films were measured by using Fourier transform infrared （FT-IR）， thermogravimetric analysis （TG）， scanning electron microscope （SEM）， uv-vis absorption spectra and universal testing machine respectively. Effects of dosage of MRPs nanoparticles solution on antioxidant and mechanical properties of PLA/MRPs emulsion films were discussed. The results indicated that PLA/MRPs composite materials were oil-in-water structure， and after 30 h test， DPPH free radical scavenging rate of PLA/MRPs emulsion films prepared with 0.50% MRP reached maximum level of 26.55%. However， tensile strength and elongation at break of PLA/MRPs emulsion films decreased with the increase of MRPs dosage.
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