Enhancing 3D printing sustainability: Reinforcing thermoplastic polyurethane with recycled polyurethane foam for durable applications in orthopedic footwear

IF 3.8 4区工程技术 Q2 CHEMISTRY, APPLIED

Journal of Vinyl & Additive Technology Pub Date : 2024-04-30 DOI:10.1002/vnl.22109

Toaa Salama Mohamed, Ehssan Nassef, Ashraf Morsy, Hassan A. Ewais, Ahmed H. Abdel-Salam, Ahmed Morsy, Nabil Mahmoud Abd El-Moneim

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引用次数: 0

Abstract

This study seeks to advance the realm of 3D printing through the exploration of fabricating polymer matrix composite objects using recycled materials, with a particular emphasis on bolstering durability. Characterization was carried out by integrating polyurethane foam (PUF) residues into thermoplastic polyurethane (TPU) composites at different concentrations (ranging from 3% to 10% wt/wt), which are frequently employed in 3D printing. The chemical functions were analyzed using Fourier-transform infrared spectroscopy (FTIR), while thermal stability was measured through thermal gravimetric analysis (TGA). The morphology characterized of the material via scanning electron microscopy (SEM) and density measurement identified that the surface roughness and void content of the PUF/TPU composite materials was a significant factor affecting the measured mechanical properties. Experimental results indicate that higher PUF content enhances filament properties and the resultant 3D printed products, showcasing a reduction in both the density and melt index of the produced filament by 15.9% and 34.4%, respectively, with the addition of 5% wt./wt. PUF residues to TPU. Additionally, there was a notable increase in Young's modulus of the produced filament by 79.9% and maximum stress by 12.7%, while elongation at break was reduced by 24.9%. Furthermore, the study highlights the sustainability advantages of utilizing recycled PUF, contributing to waste reduction and associated cost savings. Recycled PUF emerges as a cost-effective additive for synthesizing 3D polymeric materials, holding promise for diverse applications such as orthopedic footwear, leveraging the desirable attributes of TPU.

Highlights

Recycled (PUF)/TPU composites for 3D printing, enhancing durability.
PUF content improves filament properties, reducing density and melt index.
Young's modulus and maximum stress of produced filament increases.
Utilizing recycled PUF reduces waste and promises sustainability.

Abstract Image

查看原文本刊更多论文

增强 3D 打印的可持续性：用再生聚氨酯泡沫增强热塑性聚氨酯，用于矫形鞋的耐用应用

本研究旨在通过探索使用回收材料制造聚合物基复合材料物体，推进三维打印技术的发展，尤其注重提高耐用性。通过将聚氨酯泡沫（PUF）残留物以不同的浓度（从 3% 到 10% wt/wt）添加到热塑性聚氨酯（TPU）复合材料中，进行了表征。化学功能采用傅立叶变换红外光谱（FTIR）进行分析，热稳定性则通过热重分析（TGA）进行测量。通过扫描电子显微镜（SEM）和密度测定对材料的形态进行了表征，发现聚氨酯/热塑性聚氨酯复合材料的表面粗糙度和空隙含量是影响所测机械性能的重要因素。实验结果表明，较高的 PUF 含量可提高长丝性能和 3D 打印产品的效果，在 TPU 中添加 5% 重量/重量的 PUF 后，生产出的长丝密度和熔融指数分别降低了 15.9% 和 34.4%。在热塑性聚氨酯中添加 5% 重量/重量的 PUF 残留物后，生产的长丝密度和熔融指数分别降低了 15.9% 和 34.4%。此外，生产出的长丝的杨氏模量显著提高了 79.9%，最大应力提高了 12.7%，而断裂伸长率降低了 24.9%。此外，这项研究还强调了利用回收聚氨酯纤维的可持续发展优势，有助于减少废物和节约相关成本。回收的 PUF 是合成三维聚合物材料的一种具有成本效益的添加剂，利用热塑性聚氨酯的理想特性，有望用于矫形鞋等多种应用。PUF 成分可改善长丝特性，降低密度和熔融指数。生产出的长丝的杨氏模量和最大应力会增加。利用回收的 PUF 可减少浪费，实现可持续发展。

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

Journal of Vinyl & Additive Technology 工程技术-材料科学：纺织

CiteScore

5.40

自引率

14.80%

发文量

审稿时长

>12 weeks

期刊介绍： Journal of Vinyl and Additive Technology is a peer-reviewed technical publication for new work in the fields of polymer modifiers and additives, vinyl polymers and selected review papers. Over half of all papers in JVAT are based on technology of additives and modifiers for all classes of polymers: thermoset polymers and both condensation and addition thermoplastics. Papers on vinyl technology include PVC additives.