Influence of alumina and PMMA on mechanical properties and aging behavior of 3D printed PLA composites: A comparative study

IF 4.8 2区材料科学 Q2 MATERIALS SCIENCE, COMPOSITES Polymer Composites Pub Date : 2024-09-13 DOI:10.1002/pc.29000

Ramasamy Nallamuthu, Arunkumar Thirugnanasamabandam, Kumaran Kadirgama, William Chong, Geethapriyan Thangamani, Abdullah Alarifi

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Abstract

This study intends to investigate the mechanical, thermal, and aging behaviors of 3D‐printed PLA (polylactic acid)‐blend with 10% polymethyl methacrylate (PMMA) and 10% alumina polymer composites for biomedical applications using compressive, DSC, and DMA analysis. The experimental results revealed that aged PLA blend with alumina samples increased compressive strength by 60.1% and 37.8% during hydrolytic and enzymatic degradation, respectively, compared to aged PLA samples. Also, it was reported that the PLA blend with PMMA samples increased compressive strength by 51.1% and 24% after hydrolytic and enzymatic degradation, respectively, as compared to aged PLA samples. Furthermore, DSC analysis revealed that alumina blended samples had a higher Tg than pure PLA and PMMA blended samples. In addition, DMA investigation revealed that the Tg of aged neat PLA, PLA/PMMA, and PLA/alumina increased by 4.38%, 4.8%, and 4.6%, respectively, compared to unaged polymer composites. Additionally, PLA/alumina‐aged samples exhibited stronger aging properties than neat PLA and PLA/PMMA blended‐aged samples. It was reported that the weight loss of PLA/Alumina was lowered by 10.7% and 15.6% compared to aged PLA/PMMA samples, for hydrolytic and enzymatic aging respectively. It was found that PLA alumina has better mechanical, thermal, and degradation resistance than PLA materials.Highlights

Alumina and PMMA materials were blended with PLA.

Examined the aging and mechanical properties of PLA blended composites.

Utilized hydrolytic and enzymatic aging for biomedical applications.

Evaluated mechanical strength performance of aged and unaged samples.

DSC and DMA were utlised for this research.

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氧化铝和 PMMA 对 3D 打印聚乳酸复合材料机械性能和老化行为的影响：比较研究

本研究旨在利用压缩、DSC 和 DMA 分析方法，研究用于生物医学应用的 3D 打印聚乳酸（PLA）--与 10% 聚甲基丙烯酸甲酯（PMMA）和 10% 氧化铝聚合物的混合物的机械、热和老化行为。实验结果表明，与老化的聚乳酸样品相比，老化的聚乳酸与氧化铝混合样品在水解和酶降解过程中的抗压强度分别提高了 60.1%和 37.8%。另据报道，与老化聚乳酸样品相比，聚乳酸与 PMMA 混合样品在水解和酶降解后的抗压强度分别提高了 51.1%和 24%。此外，DSC 分析表明，氧化铝混合样品的 Tg 值高于纯聚乳酸和 PMMA 混合样品。此外，DMA 研究表明，与未老化的聚合物复合材料相比，老化的纯聚乳酸、聚乳酸/PMMA 和聚乳酸/氧化铝的 Tg 分别增加了 4.38%、4.8% 和 4.6%。此外，与纯聚乳酸和聚乳酸/PMMA 混合老化样品相比，聚乳酸/氧化铝老化样品具有更强的老化性能。据报道，与老化的聚乳酸/PMMA 样品相比，水解老化和酶老化的聚乳酸/氧化铝重量损失分别降低了 10.7% 和 15.6%。研究发现，聚乳酸氧化铝比聚乳酸材料具有更好的机械性能、耐热性和耐降解性。研究了聚乳酸混合复合材料的老化和机械性能。利用水解和酶老化技术进行生物医学应用。评估老化和未老化样品的机械强度性能。在这项研究中使用了 DSC 和 DMA。

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来源期刊

Polymer Composites 工程技术-材料科学：复合

CiteScore

7.50

自引率

32.70%

发文量

673

审稿时长

3.1 months

期刊介绍： Polymer Composites is the engineering and scientific journal serving the fields of reinforced plastics and polymer composites including research, production, processing, and applications. PC brings you the details of developments in this rapidly expanding area of technology long before they are commercial realities.