Biopolymer nanocomposite blends of poly(lactic acid) and polyhydroxybutyrate biopolymers reinforced with cellulose nanofibrils at low loading ratio

IF 3.1 4区工程技术 Q2 POLYMER SCIENCE

Polymers for Advanced Technologies Pub Date : 2024-07-17 DOI:10.1002/pat.6520

Deniz Aydemir, Havva Gumus, Ertugrul Altuntas, Ömer Ümit Yalçın, Zeynep Eda Özan

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引用次数: 0

Abstract

This study investigated the mechanical, morphological, thermal, rheological properties, and accelerated aging performance of poly(lactic acid) (PLA)/polyhydroxybutyrate (PHB) blends with cellulose nanofibrils (CNFs) at low loading ratio. According to the obtained results, the addition of both PLA and CNFs were found to generally increase the mechanical properties of the biopolymer nanocomposites (BNCs). Morphological characterization with scanning electron microscopy (SEM) exhibited that cellular structure occurred in all the BNCs with adding both PLA and CNFs. Thermal stability of the BNCs improved with PLA and CNFs. The addition of CNFs and PLA generally increased the isotherms including Tg, Tc, and Tm according to differential scanning calorimetry (DSC), and it was found that the blends' crystallinity dropped because of a poor crystallinity of PLA. The addition of both PLA and CNFs provided an improvement on the rheological and viscoelastic properties of the neat PHB. XRD pattern of all the BNCs was found to be similar to the neat blends and the BNCs. In the accelerated weathering test, the adding PLA to neat PHB was found to provide more improvement than adding of CNFs.

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聚（乳酸）和聚羟基丁酸生物聚合物与低负载率纤维素纳米纤维增强的生物聚合物纳米复合混合物

本研究探讨了聚乳酸（PLA）/聚羟基丁酸（PHB）与纤维素纳米纤维（CNFs）在低负载率下共混物的机械、形态、热、流变特性和加速老化性能。研究结果表明，聚乳酸和 CNF 的加入普遍提高了生物聚合物纳米复合材料（BNC）的机械性能。利用扫描电子显微镜（SEM）进行的形态学表征显示，添加聚乳酸和氯化萘纤维后，所有 BNC 都出现了细胞结构。添加聚乳酸和氯化萘纤维后，BNC 的热稳定性得到改善。根据差示扫描量热法（DSC），CNFs 和聚乳酸的添加普遍提高了包括 Tg、Tc 和 Tm 在内的等温线。聚乳酸和 CNF 的加入改善了纯 PHB 的流变和粘弹性能。所有 BNC 的 XRD 图谱均与纯混合物和 BNC 相似。在加速老化试验中，发现在纯 PHB 中添加聚乳酸比添加 CNFs 有更大的改善。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Polymers for Advanced Technologies 工程技术-高分子科学

CiteScore

6.20

自引率

5.90%

发文量

337

审稿时长

2.1 months

期刊介绍： Polymers for Advanced Technologies is published in response to recent significant changes in the patterns of materials research and development. Worldwide attention has been focused on the critical importance of materials in the creation of new devices and systems. It is now recognized that materials are often the limiting factor in bringing a new technical concept to fruition and that polymers are often the materials of choice in these demanding applications. A significant portion of the polymer research ongoing in the world is directly or indirectly related to the solution of complex, interdisciplinary problems whose successful resolution is necessary for achievement of broad system objectives. Polymers for Advanced Technologies is focused to the interest of scientists and engineers from academia and industry who are participating in these new areas of polymer research and development. It is the intent of this journal to impact the polymer related advanced technologies to meet the challenge of the twenty-first century. Polymers for Advanced Technologies aims at encouraging innovation, invention, imagination and creativity by providing a broad interdisciplinary platform for the presentation of new research and development concepts, theories and results which reflect the changing image and pace of modern polymer science and technology. Polymers for Advanced Technologies aims at becoming the central organ of the new multi-disciplinary polymer oriented materials science of the highest scientific standards. It will publish original research papers on finished studies; communications limited to five typewritten pages plus three illustrations, containing experimental details; review articles of up to 40 pages; letters to the editor and book reviews. Review articles will normally be published by invitation. The Editor-in-Chief welcomes suggestions for reviews.