王蕾,陈晨伟,戴方沁,陈文君,杨福馨,谢晶.PBAT/ZSM-5分子筛共混薄膜的制备与性能[J].包装工程,2021,42(21):86-92.
WANG Lei,CHEN Chen-wei,DAI Fang-qin,CHEN Wen-jun,YANG Fu-xin,XIE Jing.Preparation and Properties of PBAT/ZSM-5 Zeolite Blending Film[J].Packaging Engineering,2021,42(21):86-92. |
| PBAT/ZSM-5分子筛共混薄膜的制备与性能 |
| Preparation and Properties of PBAT/ZSM-5 Zeolite Blending Film |
| 投稿时间：2021-02-07 |
| DOI：10.19554/j.cnki.1001-3563.2021.21.012 |
| 中文关键词: 聚己二酸-对苯二甲酸丁二酯 ZSM-5分子筛 薄膜 气体选择透过性 |
| 英文关键词: poly (butylene adipate-co-butylene terephthalate) ZSM-5 zeolite film gas permselectivity |
| 基金项目:国家重点研发计划(2018YFD0400701);上海市科委公共服务平台建设项目(19DZ2284000);上海市绿叶菜产业体系建设项目;上海市大学生创新项目(A1-2042-16-0003) |
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| 中文摘要: |
| 目的 以聚己二酸-对苯二甲酸丁二酯(PBAT)为基材，制备PBAT/ZSM-5分子筛共混薄膜，研究分子筛含量对薄膜性能的影响。方法 通过共混熔融挤出流延法制得含不同质量分数ZSM-5分子筛(0%，1%，3%，5%，7%)的PBAT薄膜，测定分析不同分子筛质量分数对薄膜的颜色、透明性、结构、气体阻隔性、力学性能等性能的影响。结果 随着分子筛质量分数的增加，透明性和断裂伸长率显著降低，抗拉强度先增加后降低，质量分数为1%分子筛的薄膜抗拉强度相对较大，较纯PBAT薄膜增加了12.34%;薄膜氧气透过性能整体上呈上升趋势，二氧化碳透过性和CO2/O2透过比均逐渐增加，水蒸气透过性显著降低，与纯PBAT薄膜相比，质量分数为7%分子筛PBAT薄膜的氧气和二氧化碳透过系数分别增加了18.48%，33.51%，水蒸气透过系数下降了43.28%，CO2/O2透过比由原来的8.84增加到9.96;薄膜表面和横截断面均变得粗糙，局部区域有团聚现象，且随分子筛含量的增加而变得明显。结论 ZSM-5分子筛的少量加入，可以影响PBAT薄膜力学性能，降低其水蒸气透过性，调节薄膜的气体选择透过性，为其应用于生鲜果蔬包装提供基础。 |
| 英文摘要: |
| The work aims to prepare ZSM-5 zeolite blending film with poly (butylene adipate-co-butylene terephthalate) (PBAT) as substrate to study the effect of ZSM-5 zeolite content on the properties of films. PBAT films containing ZSM-5 zeolite with different concentrations (0%, 1%, 3%, 5% and 7%) were prepared by blending melt extrusion and casting method. The effect of ZSM-5 zeolite on color, transparency, structure, gas barrier properties and mechanical properties of the films were studied. With the increase of ZSM-5 zeolite, the transparency and elongation at break of the PBAT films decreased significantly; the tensile strength increased firstly and then decreased. When the concentration of ZSM-5 zeolite was 1%, the tensile strength of the film was relatively larger, which increased by 12.34% compared with the pure PBAT film. The oxygen permeability of the films showed an overall upward trend. The carbon dioxide permeability and ratio of CO2/O2 increased gradually. The water vapor permeability reduced significantly. Compared with the pure PBAT film, the oxygen and carbon dioxide transmission coefficient of the PBAT film containing 7% ZSM-5 zeolite increased by 18.48% and 33.51% respectively; the water vapor transmission coefficient decreased by 43.28%, and the ratio of CO2/O2 increased from 8.84 to 9.96. Both the surface and cross-section of PBAT films became rough, and the agglomeration of particles were partly observed, which became obvious with the increase of ZSM-5 zeolite. The low addition of ZSM-5 zeolite affects the mechanical properties of PBAT films, improves their water vapor barrier property, adjusts the gas permselectivity of the film, and provides a basis for its application in fresh fruits and vegetables packaging. |
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