β-chitosan-clay films: Characterization and antibacterial study using response surface methodology

Q2 Materials Science

Polymers from Renewable Resources Pub Date : 2022-09-26 DOI:10.1177/20412479221128967

Mohamed Ali Hajjaji, A. Alagui, N. Joly, Patrick Martin

引用次数: 2

Abstract

Properties of the chitosan films can be improved by incorporating clay minerals. So, solvent-cast films of the β-chitosan containing stevensite-rich or kaolinitic-illitic clays (up to 50 mass %) were characterized for their structural and mechanical properties. The effects of molecular weight (MW) and deacetylation degree (DD) of chitosan and the clay/chitosan mass ratio on the inhibition growth of Escherichia coli and Staphylococcus aureus were studied using the response surface methodology (RSM). The films consisted of exfoliated/intercalated or flocculated composites, and the electrostatic bonds formed between the functional moieties of the chitosan and the clay particles active sites essentially influenced their mechanical strength. The results of the study using RSM showed that the optimal value of MW required for the inhibition of the bacteria varied according to the film used, and high antibacterial activity necessitated high DD (89–97%). Graphical Abstract

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β-壳聚糖粘土膜的表征及响应面法抗菌研究

加入粘土矿物可以改善壳聚糖薄膜的性能。因此，对含有富含stevensite或高岭土（高达50质量%）的β-壳聚糖的溶剂流延膜的结构和力学性能进行了表征。采用响应面法研究了壳聚糖的分子量（MW）、脱乙酰度（DD）和粘土/壳聚糖质量比对大肠杆菌和金黄色葡萄球菌生长的抑制作用。该膜由剥离/嵌入或絮凝的复合材料组成，壳聚糖的功能部分和粘土颗粒活性位点之间形成的静电键基本上影响了它们的机械强度。使用RSM的研究结果表明，抑制细菌所需的最佳MW值因所用薄膜而异，高抗菌活性需要高DD（89–97%）。图形摘要

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来源期刊

Polymers from Renewable Resources Materials Science-Polymers and Plastics

CiteScore

3.50

自引率

0.00%

发文量

期刊介绍： Polymers from Renewable Resources, launched in 2010, publishes leading peer reviewed research that is focused on the development of renewable polymers and their application in the production of industrial, consumer, and medical products. The progressive decline of fossil resources, together with the ongoing increases in oil prices, has initiated an increase in the search for alternatives based on renewable resources for the production of energy. The prevalence of petroleum and carbon based chemistry for the production of organic chemical goods has generated a variety of initiatives aimed at replacing fossil sources with renewable counterparts. In particular, major efforts are being conducted in polymer science and technology to prepare macromolecular materials based on renewable resources. Also gaining momentum is the utilisation of vegetable biomass either by the separation of its components and their development or after suitable chemical modification. This journal is a valuable addition to academic, research and industrial libraries, research institutions dealing with the use of natural resources and materials science and industrial laboratories concerned with polymer science.