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新型可生物降解聚乳酸/木材渗滤液复合材料：抗菌、力学、形态及热性能研究

Novel Biodegradable Poly (Lactic Acid)/Wood Leachate Composites: Investigation of Antibacterial, Mechanical, Morphological, and Thermal Properties.

作者信息

Shahavi Mohammad Hassan, Selakjani Peyman Pouresmaeel, Abatari Mohadese Niksefat, Antov Petar, Savov Viktor

机构信息

Faculty of Engineering Modern Technologies, Amol University of Special Modern Technologies (AUSMT), Amol 4615664616, Iran.

Faculty of Forest Industry, University of Forestry, 1797 Sofia, Bulgaria.

出版信息

Polymers (Basel). 2022 Mar 18;14(6):1227. doi: 10.3390/polym14061227.

DOI:10.3390/polym14061227
PMID:35335557
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8950512/
Abstract

This research aimed to investigate the effects of using wood leachate (WL) powder as a cost-effective filler added to novel poly (lactic acid) biocomposites and evaluate their mechanical, thermal, morphological, and antibacterial properties. Fourier transform infrared spectroscopy (FTIR), tensile test, Charpy impact test, Shore hardness, scanning electron microscope (SEM), differential scanning calorimetry (DSC), contact angle, and bacterial growth inhibition tests were employed to characterize the developed biocomposites. The SEM results indicated a proper filler dispersion in the polymer matrix. WL powder improved the hydrophobic nature in the adjusted sample's contact angle experiment. Markedly, the results showed that the addition of WL filler improved the mechanical properties of the fabricated biocomposites. The thermal analysis determined the development in crystallization behavior and a decline in glass transition temperature (Tg) from 60.1 to 49.3 °C in 7% PLA-WL biocomposites. The PLA-WL biocomposites exhibited an antibacterial activity according to the inhibition zone for bacteria. The developed novel PLA-WL composites can be effectively utilized in various value-added industrial applications as a sustainable and functional biopolymer material.

摘要

本研究旨在探究使用木沥滤液（WL）粉末作为一种经济高效的填料添加到新型聚乳酸生物复合材料中的效果，并评估其力学、热学、形态学和抗菌性能。采用傅里叶变换红外光谱（FTIR）、拉伸试验、夏比冲击试验、邵氏硬度、扫描电子显微镜（SEM）、差示扫描量热法（DSC）、接触角和细菌生长抑制试验对所制备的生物复合材料进行表征。SEM结果表明填料在聚合物基体中分散良好。在调整后的样品接触角实验中，WL粉末改善了疏水性。值得注意的是，结果表明添加WL填料提高了所制备生物复合材料的力学性能。热分析确定了结晶行为的变化，在7%聚乳酸-WL生物复合材料中玻璃化转变温度（Tg）从60.1℃降至49.3℃。根据对细菌的抑菌圈，聚乳酸-WL生物复合材料表现出抗菌活性。所开发的新型聚乳酸-WL复合材料作为一种可持续且功能性的生物聚合物材料，可有效地应用于各种高附加值的工业应用中。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cd3/8950512/4bcf145160d8/polymers-14-01227-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cd3/8950512/5d63c2b4efc2/polymers-14-01227-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cd3/8950512/d8d6592fe05a/polymers-14-01227-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cd3/8950512/d77b73c189d5/polymers-14-01227-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cd3/8950512/0da7a85084dc/polymers-14-01227-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cd3/8950512/e9b689bd525f/polymers-14-01227-g005a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cd3/8950512/8b3bfe1656db/polymers-14-01227-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cd3/8950512/4bcf145160d8/polymers-14-01227-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cd3/8950512/5d63c2b4efc2/polymers-14-01227-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cd3/8950512/d8d6592fe05a/polymers-14-01227-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cd3/8950512/d77b73c189d5/polymers-14-01227-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cd3/8950512/0da7a85084dc/polymers-14-01227-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cd3/8950512/e9b689bd525f/polymers-14-01227-g005a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cd3/8950512/8b3bfe1656db/polymers-14-01227-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cd3/8950512/4bcf145160d8/polymers-14-01227-g007.jpg

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