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将小茴香精油固定在聚丙烯基质中用于聚合物表面的抗菌改性

Immobilization of Caraway Essential Oil in a Polypropylene Matrix for Antimicrobial Modification of a Polymeric Surface.

作者信息

Strasakova Monika, Pummerova Martina, Filatova Kateryna, Sedlarik Vladimir

机构信息

Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Trida Tomase Bati 5678, 760 01 Zlin, Czech Republic.

出版信息

Polymers (Basel). 2021 Mar 16;13(6):906. doi: 10.3390/polym13060906.

DOI:10.3390/polym13060906
PMID:33809428
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7999115/
Abstract

This study investigates antibacterial polymer composites based on polypropylene as modified by caraway essential oil at various concentrations, the latter immobilized on a talc. The caraway essential oil is incorporated in the polypropylene by a thermoplastic processing method. Analysis of the morphology of the composites was carried out by scanning electron microscopy. The chemical composition of the caraway essential oil in addition to its efficiency of incorporation and release were evaluated by GC/MS and Pyrolysis-GC/MS techniques, respectively. Determination was made as to the influence of such incorporation on thermal and tensile properties of the samples, while antibacterial activity was evaluated through conducting disk diffusion tests and measurement with adherence to the ISO 22196:2011 standard. It was found that incorporating the caraway essential oil in the samples did not affect the homogeneity of the thermoplastic-processed composites at any studied concentration. Stress-strain analysis confirmed the plasticizing effect of the essential oil in the polypropylene matrix, in addition to which, differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) analysis revealed that the prepared compositions with essential oil exhibited similar thermal properties to neat polypropylene. Results indicated significant antibacterial activity against and at the concentration of essential oil of 4.9 ± 0.2 wt% and higher.

摘要

本研究调查了以不同浓度的香菜籽油改性聚丙烯为基础的抗菌聚合物复合材料，香菜籽油固定在滑石粉上。通过热塑性加工方法将香菜籽油掺入聚丙烯中。通过扫描电子显微镜对复合材料的形态进行分析。分别采用气相色谱/质谱联用（GC/MS）和热解气相色谱/质谱联用（Pyrolysis-GC/MS）技术评估香菜籽油的化学成分及其掺入和释放效率。测定了这种掺入对样品热性能和拉伸性能的影响，同时通过进行纸片扩散试验并按照ISO 22196:2011标准进行测量来评估抗菌活性。发现在任何研究浓度下，将香菜籽油掺入样品中均不会影响热塑性加工复合材料的均匀性。应力应变分析证实了该精油在聚丙烯基体中的增塑作用，此外，差示扫描量热法（DSC）和热重分析（TGA）表明，制备的含精油组合物表现出与纯聚丙烯相似的热性能。结果表明，在精油浓度为4.9±0.2 wt%及更高时，对[具体菌种1]和[具体菌种2]具有显著的抗菌活性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea81/7999115/95212e0a44ca/polymers-13-00906-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea81/7999115/c2caa1a91965/polymers-13-00906-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea81/7999115/c4a2199dddf9/polymers-13-00906-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea81/7999115/ecab23a9352c/polymers-13-00906-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea81/7999115/338e3f4ce51c/polymers-13-00906-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea81/7999115/df5dd2c96bbe/polymers-13-00906-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea81/7999115/95212e0a44ca/polymers-13-00906-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea81/7999115/c2caa1a91965/polymers-13-00906-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea81/7999115/c4a2199dddf9/polymers-13-00906-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea81/7999115/ecab23a9352c/polymers-13-00906-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea81/7999115/338e3f4ce51c/polymers-13-00906-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea81/7999115/df5dd2c96bbe/polymers-13-00906-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea81/7999115/95212e0a44ca/polymers-13-00906-g006.jpg

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