Production of biodegradable packaging film based on PLA/starch: optimization via response surface methodology

IF 1.9 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Bulletin of Materials Science Pub Date : 2024-11-19 DOI:10.1007/s12034-024-03351-9

Neda Miranzadeh, Mohsen Najafi, Maryam Ataeefard

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引用次数: 0

Abstract

Today, economic consumption of biodegradable polymers is significant in many applications. Thermoplastic starch (TPS) and polylactic acid (PLA) are two bio-based and biodegradable polymers that are increasingly being used to replace the petrochemical-based polymers. Adding TPS into a PLA matrix can also decrease material cost and increase its biodegradation rate. This work tested the printability of TPS/PLA films. For this purpose, TPS was first prepared by the addition of sorbitol and glycerol as softeners using an internal mixer at 140°C. Then, it was added to the PLA in internal mixer at 180°C. To analyse the data, design of the experiment was done according to Box–Behnken design (BBD) method for three variables in three levels by using Design-Expert software, which led to the preparation of 15 samples. Individual and interactive effects of wt% of PLA in TPS/PLA mixture, the wt% of starch in TPS, and the ratio of sorbitol to glycerol on the tensile properties, thermal properties and printing properties (optical density) were investigated. Solvent-based flexographic ink was applied to test printability of the films. It has been found that the PLA can be successfully printed with flexographic solvent inks to achieve a quality comparable to that of common packaging films.

查看原文本刊更多论文

基于聚乳酸/淀粉的可生物降解包装膜的生产：通过响应面方法进行优化

如今，生物可降解聚合物在许多应用领域中的经济消耗量都很大。热塑性淀粉（TPS）和聚乳酸（PLA）是两种生物基可生物降解聚合物，正越来越多地被用来替代石化基聚合物。在聚乳酸基质中添加 TPS 还能降低材料成本，提高其生物降解率。这项研究测试了 TPS/PLA 薄膜的可印刷性。为此，首先在 140°C 温度下使用内部搅拌器加入山梨醇和甘油作为软化剂制备 TPS。然后，在 180°C 的内部混合器中将其添加到聚乳酸中。为了分析数据，使用 Design-Expert 软件按照方框-贝肯设计（BBD）方法对三个变量的三个水平进行了实验设计，从而制备了 15 个样品。研究了 TPS/PLA 混合物中聚乳酸的重量百分比、TPS 中淀粉的重量百分比以及山梨糖醇与甘油的比例对拉伸性能、热性能和印刷性能（光密度）的单独和交互影响。使用溶剂型柔性版印刷油墨测试薄膜的印刷性能。结果发现，聚乳酸可以成功地用柔版溶剂型油墨进行印刷，达到与普通包装薄膜相当的质量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Bulletin of Materials Science 工程技术-材料科学：综合

CiteScore

3.40

自引率

5.60%

发文量

209

审稿时长

11.5 months

期刊介绍： The Bulletin of Materials Science is a bi-monthly journal being published by the Indian Academy of Sciences in collaboration with the Materials Research Society of India and the Indian National Science Academy. The journal publishes original research articles, review articles and rapid communications in all areas of materials science. The journal also publishes from time to time important Conference Symposia/ Proceedings which are of interest to materials scientists. It has an International Advisory Editorial Board and an Editorial Committee. The Bulletin accords high importance to the quality of articles published and to keep at a minimum the processing time of papers submitted for publication.