现代食品科技2017，Vol.33Issue(3)：171-178,8.DOI:10.13982/j.mfst.1673-9078.2017.3.026
复合增塑剂聚乙二醇200与甘油对淀粉/PHA复合膜性能的影响
Effects of Composite Plasticizer Polyethylene Glycol 200 and Glycerol on the Properties of Starch/PHA Composite Films
摘要
Abstract
Starch/polyhydroxyalkanoate (PHA) composite films were prepared using the blown film extrusion method with hydroxypropylated crosslinked tapioca starch and PHA as the film-forming substrate,glycerol (GLY) as the primary plasticizer,polyethylene glycol 200 (PEG200) as the secondary plasticizer,and organically modified montmorillonite (OMMT) as the enhancer.The effect of weight ratios of PEG200/GLY on the properties of the composite films was evaluated.The structure,microstructure,and molecular interactions of the films were analyzed by X-ray diffraction,scanning electron microscope,and Fourier transform infrared spectroscopy,respectively.The water vapor barrier properties,mechanical properties,light transmittance,and color of the films were also measured.The results showed that the primary plasticizer GLY had a good plasticizing effect on the starch/PHA blend systems.Moreover,the addition of PEG200 facilitated the formation of intercalated nanostructures between starch,PHA,and OMMT,and increased the light transmittance and whiteness values of the composite films.Additionally,the surface of the composite films became flat and smooth.When the weight ratio of PEG200/GLY was 8/92,the composite films showed good moisture barrier properties and high elongation at break.When the weight ratio of PEG200/GLY was 12/88,the composite films showed a high tensile strength and good light transmittance.The addition of the secondary plasticizer PEG200 enhanced intermolecular interactions.During the preparation of starch/PHA composite films,PEG200 was a preferable compatibilizer and plasticizer,and the weight ratio of PEG200/GLY should be less than 12/88.关键词
复合增塑剂/甘油/聚乙二醇200/淀粉/PHA复合膜/挤出吹膜Key words
composite plasticizer/glycerol/polyethylene glycol 200/starch/poly (β-hydroxyalkanoates) (PHA) composite films/blown film extrusion引用本文复制引用
孙圣麟,刘鹏飞,王文涛,侯汉学,董海洲..复合增塑剂聚乙二醇200与甘油对淀粉/PHA复合膜性能的影响[J].现代食品科技,2017,33(3):171-178,8.基金项目
国家自然科学基金项目(31371747) （31371747）
国家科技支撑计划项目(2013BAD18B10-3) （2013BAD18B10-3）
山东省自然科学基金项目(ZR2012CM016) （ZR2012CM016）
