Optimizing film mechanical and water contact angle properties via PLA/starch/lecithin concentrations

Taofeek Mukaila , Adewale Adeniyi , Ibrahim Bello , Niloy Chandra Sarker , Ewumbua Monono , Ademola Hammed
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引用次数: 0

Abstract

The optimization of mechanical property and water contact angle of PLA/starch/lecithin film was conducted using response surface methodology. The tensile strength, Young's modulus and water contact angle of PLA/starch/lecithin film ranged from 0.44 ± 0.21–7.18 ± 0.57 MPa, 133.78 ± 33.7–775.57 ± 85.44 MPa and 17.71 ± 1.93–59.41 ± 28 (o), respectively. The amount of PLA and starch significantly impacts tensile strength and Young's modulus. Unlike starch, increasing PLA in the film formulation increases tensile strength and Young's modulus. The PLA-lecithin interaction decreases the film tensile strength and Young's modulus. The film water contact angle is statistically impacted by the PLA/starch interaction and quadratic term of lecithin. The adjusted R-square and p-value of each of the response ANOVA result indicates that the model quite captures the behavior of the responses. The response 2D plots also provide more insight into the variable behavior on the resulting response, making the response surface methodology a tool to design, develop and optimize PLA-based films.

通过聚乳酸/淀粉/卵磷脂浓度优化薄膜机械性能和水接触角性能
采用响应面方法对聚乳酸/淀粉/卵磷脂薄膜的力学性能和水接触角进行了优化。聚乳酸/淀粉/卵磷脂薄膜的拉伸强度、杨氏模量和水接触角分别为 0.44 ± 0.21-7.18 ± 0.57 MPa、133.78 ± 33.7-775.57 ± 85.44 MPa 和 17.71 ± 1.93-59.41 ± 28 (o)。聚乳酸和淀粉的用量对拉伸强度和杨氏模量有显著影响。与淀粉不同,在薄膜配方中增加聚乳酸会增加拉伸强度和杨氏模量。聚乳酸与卵磷脂的相互作用会降低薄膜的拉伸强度和杨氏模量。从统计学角度看,薄膜水接触角受到聚乳酸/淀粉相互作用和卵磷脂二次项的影响。每个反应方差分析结果的调整 R 方差和 p 值表明,模型完全捕捉到了反应的行为。响应二维图还能让人更深入地了解变量对响应结果的影响,从而使响应面方法成为设计、开发和优化聚乳酸薄膜的工具。
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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CiteScore
3.30
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