用于结构应用的含生物聚合物共混物的生物基层状杂化复合材料的选定特性

Selected Properties of Bio-Based Layered Hybrid Composites with Biopolymer Blends for Structural Applications.

作者信息

Gumowska Aneta, Robles Eduardo, Bikoro Arsene, Wronka Anita, Kowaluk Grzegorz

机构信息

Department of Technology and Entrepreneurship in Wood Industry, Warsaw University of Life Sciences, Nowoursynowska Str. 159, 02-776 Warsaw, Poland.

University of Pau and the Adour Region, E2S UPPA, CNRS, Institute of Analytical and Physicochemical Sciences for the Environment and Materials (IPREM-UMR 5254), 403 Rue de Saint Pierre, 40004 Mont de Marsan, France.

出版信息

Polymers (Basel). 2022 Oct 18;14(20):4393. doi: 10.3390/polym14204393.

DOI:10.3390/polym14204393

PMID:36297971

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9611160/

Abstract

In this study, layered composites were produced with different biopolymer adhesive layers, including biopolymer polylactic acid (PLA), polycaprolactone (PCL), and biopolymer blends of PLA + polyhydroxybutyrate (PHB) (75:25 / ratio) with the addition of 25, 50% microcrystalline cellulose (MCC) and 3% triethyl Citrate (TEC) for these blends, which acted as binders and co-created the five layers in the elaborated composites. Modulus of rupture (MOR), modulus of elasticity (MOE), internal bonding strength (IB), density profile, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM) analysis were obtained. The results showed that among the composites in which two pure biopolymers were used, PLA obtained the best results, while among the produced blends, PLA + PHB, PLA + PHB + 25MCC, and PLA + PHB + 25MCC + 3TEC performed best. The mechanical properties of the composites decreased with increases in the MCC content in blends. Therefore, adding 3% TEC improved the properties of composites made of PLA + PHB + MCC blends.

摘要

在本研究中，制备了具有不同生物聚合物粘合剂层的层状复合材料，包括生物聚合物聚乳酸（PLA）、聚己内酯（PCL），以及PLA + 聚羟基丁酸酯（PHB）（75:25 / 比例）的生物聚合物共混物，并为这些共混物添加了25%、50%的微晶纤维素（MCC）和3%的柠檬酸三乙酯（TEC），它们作为粘合剂并共同构成了精细复合材料中的五层。获得了断裂模量（MOR）、弹性模量（MOE）、内结合强度（IB）、密度分布、差示扫描量热法（DSC）、热重分析（TGA）和扫描电子显微镜（SEM）分析结果。结果表明，在使用两种纯生物聚合物的复合材料中，PLA取得了最佳结果，而在制备的共混物中，PLA + PHB、PLA + PHB + 25MCC和PLA + PHB + 25MCC + 3TEC表现最佳。复合材料的机械性能随着共混物中MCC含量的增加而降低。因此，添加3%的TEC改善了由PLA + PHB + MCC共混物制成的复合材料的性能。