聚乙烯改性防霉包装薄膜的制备与性能研究

发布时间：2018-03-17 13:37

本文选题：低密度聚乙烯　切入点：改性氟树脂　出处：《塑料工业》2017年10期 　论文类型：期刊论文

【摘要】：研究低密度聚乙烯(LDPE)中加入山梨酸和改性氟树脂粉末对薄膜性能的影响。把山梨酸和改性氟树脂粉末加入到低密度聚乙烯(LDPE)树脂中,共混挤出,再把制得的母粒与低密度聚乙烯共混,流延成膜,并研究改性氟树脂粉末添加量对薄膜的光学性能、拉伸强度、透气性、水蒸气透过率、微观结构及抑菌性能的影响。结果表明,加入2%山梨酸,随着改性氟树脂粉末含量的增加,薄膜的透光率逐渐减小,雾度逐渐增大,拉伸强度先变大后变小,薄膜的氧气透过率先增大后减小。改性氟树脂粉末的质量分数在4%以上时对霉菌有抑制作用。改性防霉聚乙烯包装薄膜具有良好的包装性能和抑制霉菌的效果,是一种很好的食品防霉包装材料。
[Abstract]:The effects of sorbic acid and modified fluorine resin powder on the properties of low density polyethylene (LDPE) were studied. The sorbic acid and modified fluorine resin powder were added to LDPE resin and extruded. Then the masterbatch was blended with low density polyethylene (LDPE) to form film, and the optical properties, tensile strength, air permeability and water vapor transmittance of the film were studied by adding the modified fluorine resin powder. The effects of 2% sorbic acid on the microstructure and bacteriostatic properties of the film were studied. The results showed that with the increase of the powder content of the modified fluorine resin, the transmittance of the film gradually decreased, the fog increased, and the tensile strength first increased and then decreased. The oxygen of the film increased first and then decreased. When the mass fraction of the modified fluorine resin powder was more than 4%, the mold was inhibited. The modified anti-mold polyethylene packaging film had good packaging performance and the effect of inhibiting mold. It is a very good packaging material for anti-mildew of food.
【作者单位】：上海海洋大学食品学院;
【基金】：国家863项目(竹荚鱼资源高效利用关键技术研究2012AA0992301) 上海市科委工程中心建设(11DZ2280300) 上海市助推计划资助项目(2013CL1312HY) 上海产学研资助项目(15cxy69) 上海高校一流学科项目资助
【分类号】：TB383.2

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