等离子体处理聚丙烯无纺布制备复合保鲜材料及其性能研究

Study on preparation and properties of fresh-keeping composites based on polypropylene nonwoven by plasma treatment

中文关键词:  聚丙烯无纺布  壳聚糖  等离子体处理  力学性能  保鲜性能

英文关键词:polypropylene nonwoven  chitosan  plasma treatment  mechanical properties  fresh-keeping property

中文摘要:

      目的 制备一种聚丙烯(polypropylene, PP)无纺布基复合保鲜材料, 研究制备工艺对复合材料力学性能和保鲜效果的影响。方法 以聚丙烯无纺布为基材, 经等离子体处理后, 浸渍壳聚糖溶液, 制得壳聚糖/聚丙烯无纺布复合保鲜材料, 研究了等离子体处理功率、壳聚糖浓度、温度和时间对复合材料力学性能、微观结构和保鲜性能对其的影响。结果 等离子体处理功率80 W、壳聚糖浓度为1.5 wt%、水浴温度60 ℃、水浴时间45 min时制备的壳聚糖/聚丙烯无纺布复合材料的力学性能最佳, 对青椒的保鲜效果最好。结论 制备得到的聚丙烯无纺布基复合材料力学性能优异, 保鲜性能持久。

英文摘要:

      Objective To prepare a fresh-keeping composites based polypropylene (PP) nonwoven and study the effects of preparation process on its mechanical properties and preservation effect. Methods The fresh-keeping composites were prepared with PP nonwoven as substrate after plasma treatment and soaked with chitosan solution. Effects of power of plasma, concentrations of chitosan, temperature and time on mechanical properties, microstructure and fresh-keeping property of these composites were investigated. Results The mechanical properties of the chitosan/PP nonwoven composites prepared by the plasma power of 80 W, the concentration of chitosan at 1.5 wt%, temperature of 60 ℃ and time of 45 min. Under this condition, the preservation effect of green pepper was the best. Conclusion The polypropylene nonwoven composites have excellent mechanical properties and durable fresh-keeping properties.