碳酸钙填充聚乙烯薄膜对香蕉保鲜性能研究  

Study on Preservation Property of Banana with Calcium Carbonate Filled Polyethylene Films

作　　者：曾惠文 李圆 赖锦清 赵阳 ZENG Hui-wen;LI Yuan;LAI Jin-qing;ZHAO Yang(Guangdong Biomaterials Engineering Technology Research Center,Institute of Biological and Medical Engineering,Guangdong Academy of Sciences,Guangzhou 510316,China;School of Chemistry,South China Normal University,Guangzhou 510006,China)

机构地区：[1]广东省科学院生物与医学工程研究所广东省生物材料工程技术研究中心,广东广州510316 [2]华南师范大学化学学院,广东广州510006

出　　处：《塑料科技》2023年第9期1-5,共5页Plastics Science and Technology

基　　金：广州市科技计划项目基础研究计划(2023A04J0996);广东省科学院科技创新专项项目(2020GDASYL-20200103063);2021年度梅州市应用型科技专项资金项目(2021B0203001)。

摘　　要：通过改变碳酸钙(CaCO_(3))填充颗粒的尺寸,选择不同目数的CaCO_(3)填充聚乙烯(PE),制备一系列PE/CaCO_(3)吹塑薄膜。通过氧气、二氧化碳和水蒸气透过率分析、接触角测试,微观形貌分析和香蕉保鲜实验,研究CaCO_(3)目数对PE薄膜性能的影响。结果表明:不同目数的CaCO_(3)在PE中均匀分散。当填充1250目CaCO_(3)时,PE/CaCO_(3)薄膜具有较低的氧气与二氧化碳透过率比(O_(2)/CO_(2)),表现出好的保鲜效果,香蕉存放22 d时香蕉果皮青绿,果柄处失水变黑程度最低。A series of PE/CaCO_(3)blown films were prepared by changing the particle size of CaCO_(3)and selecting different mesh CaCO_(3)to fill polyethylene(PE).The effects of CaCO_(3)mesh on the properties of PE films were studied by oxygen,carbon dioxide and water vapor permeability analysis,contact angle test,micro-morphology analysis and banana preservation experiment.The results show that different CaCO_(3)disperse uniformly in PE.The PE/CaCO_(3)film filled with 1250 mesh CaCO_(3)has a lower oxygen/carbon dioxide transmittance ratio(O_(2)/CO_(2)),showing a good preservation effect.When bananas are stored for 22 d,the banana peel is green,and the degree of water loss and blackening at the fruit stalk is the lowest.

关 键 词：聚乙烯 碳酸钙 香蕉 保鲜袋 水蒸气透过率 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业] TB332[一般工业技术—材料科学与工程]