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可生物降解聚乳酸/聚3-羟基丁酸酯共混物与角蛋白复合材料的性能及降解性能

Properties and Degradation Performances of Biodegradable Poly(lactic acid)/Poly(3-hydroxybutyrate) Blends and Keratin Composites.

作者信息

Danko Martin, Mosnáčková Katarína, Vykydalová Anna, Kleinová Angela, Puškárová Andrea, Pangallo Domenico, Bujdoš Marek, Mosnáček Jaroslav

机构信息

Polymer Institute, Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia.

Institute of Molecular Biology, Slovak Academy of Sciences, Dúbravská cesta 21, 845 51 Bratislava, Slovakia.

出版信息

Polymers (Basel). 2021 Aug 12;13(16):2693. doi: 10.3390/polym13162693.

DOI:10.3390/polym13162693
PMID:34451232
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8399615/
Abstract

From environmental aspects, the recovery of keratin waste is one of the important needs and therefore also one of the current topics of many research groups. Here, the keratin hydrolysate after basic hydrolysis was used as a filler in plasticized polylactic acid/poly(3-hydroxybutyrate) blend under loading in the range of 1-20 wt%. The composites were characterized by infrared spectroscopy, and the effect of keratin on changes in molar masses of matrices during processing was investigated using gel permeation chromatography (GPC). Thermal properties of the composites were investigated using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The effect of keratin loading on the mechanical properties of composite was investigated by tensile test and dynamic mechanical thermal analysis. Hydrolytic degradation of matrices and composites was investigated by the determination of extractable product amounts, GPC, DSC and NMR. Finally, microbial growth and degradation were investigated. It was found that incorporation of keratin in plasticized PLA/PHB blend provides material with good thermal and mechanical properties and improved degradation under common environmental conditions, indicating its possible application in agriculture and/or packaging.

摘要

从环境角度来看，角蛋白废料的回收利用是一项重要需求，因此也是许多研究团队当前的研究课题之一。在此，碱性水解后的角蛋白水解产物在1-20 wt%的负载量下被用作增塑聚乳酸/聚（3-羟基丁酸酯）共混物中的填料。通过红外光谱对复合材料进行了表征，并使用凝胶渗透色谱法（GPC）研究了角蛋白对加工过程中基体摩尔质量变化的影响。使用热重分析（TGA）和差示扫描量热法（DSC）研究了复合材料的热性能。通过拉伸试验和动态力学热分析研究了角蛋白负载量对复合材料力学性能的影响。通过测定可萃取产物量、GPC、DSC和NMR研究了基体和复合材料的水解降解。最后，研究了微生物的生长和降解情况。结果发现，在增塑的聚乳酸/聚羟基丁酸酯共混物中加入角蛋白可使材料具有良好的热性能和力学性能，并在常见环境条件下提高降解性能，表明其在农业和/或包装领域具有潜在应用价值。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d227/8399615/b2f57d8a21fd/polymers-13-02693-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d227/8399615/8d2190802bf3/polymers-13-02693-g001a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d227/8399615/567493294072/polymers-13-02693-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d227/8399615/1a1a0683e181/polymers-13-02693-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d227/8399615/dfaa1ca7bb90/polymers-13-02693-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d227/8399615/69d190632a3c/polymers-13-02693-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d227/8399615/db1c95074d03/polymers-13-02693-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d227/8399615/c9ca664add08/polymers-13-02693-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d227/8399615/b2f57d8a21fd/polymers-13-02693-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d227/8399615/8d2190802bf3/polymers-13-02693-g001a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d227/8399615/567493294072/polymers-13-02693-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d227/8399615/1a1a0683e181/polymers-13-02693-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d227/8399615/dfaa1ca7bb90/polymers-13-02693-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d227/8399615/69d190632a3c/polymers-13-02693-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d227/8399615/db1c95074d03/polymers-13-02693-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d227/8399615/c9ca664add08/polymers-13-02693-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d227/8399615/b2f57d8a21fd/polymers-13-02693-g008.jpg

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