Effect of Stabilizers and Thermoplastic Polyurethane on the Properties of Three-Dimensional Printed Photochromic Wood Flour/Polylactic Acid Composites.

IF 4.7 Q2 MATERIALS SCIENCE, BIOMATERIALS ACS Applied Bio Materials Pub Date : 2023-12-01 Epub Date: 2023-12-11 DOI:10.1089/3dp.2021.0170

Haiying Yang, Dong Wang, Hongjie Bi, Zechun Ren, Min Xu, Zhenhua Huang, Liping Cai

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Abstract

This study was aimed at investigating the photofatigue resistance and mechanical properties of photochromic wood-plastic composites using a stabilizer complex-AH (antioxidant 1010 and hindered amine light stabilizer HALS 770)-with different contents of thermoplastic polyurethane (TPU), which was prepared by the melt-blending extrusion process and three-dimensional (3D) printing. Photofatigue resistance, mechanical property, microtopography, and thermal analyses of 3D printed samples were performed. The results showed that the difference in surface color of composites improved by 26.7% with addition of AH after 10 days of accelerated aging, whereas the mechanical strength decreased. Upon adding TPU, composites' impact strength significantly increased by 25.48% and 87.87% with 10% and 20% addition, respectively. Meanwhile, the interface compatibilities between the components were enhanced. The differential scanning calorimetry and thermogravimetric analysis results indicated that 10% TPU could improve the thermal stability of composites.

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稳定剂和热塑性聚氨酯对三维印刷光致变色木粉/聚乳酸复合材料性能的影响

本研究旨在研究光致变色木塑复合材料的抗光疲劳性和力学性能，该复合材料使用了不同含量的热塑性聚氨酯（TPU）稳定剂复合物-AH（抗氧化剂 1010 和受阻胺光稳定剂 HALS 770），通过熔融混合挤出工艺和三维（3D）打印制备而成。对三维打印样品进行了抗光疲劳性、机械性能、微观形貌和热分析。结果表明，经过 10 天的加速老化后，添加 AH 后，复合材料的表面颜色差异提高了 26.7%，而机械强度却降低了。添加热塑性聚氨酯后，复合材料的冲击强度显著提高，添加量分别为 10%和 20%，提高了 25.48% 和 87.87%。同时，各组分之间的界面相容性也得到了提高。差示扫描量热法和热重分析结果表明，10% 的热塑性聚氨酯可提高复合材料的热稳定性。

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来源期刊

ACS Applied Bio Materials Chemistry-Chemistry (all)

CiteScore

9.40

自引率

2.10%

发文量

464

期刊介绍： ACS Applied Bio Materials is an interdisciplinary journal publishing original research covering all aspects of biomaterials and biointerfaces including and beyond the traditional biosensing, biomedical and therapeutic applications. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important bio applications. The journal is specifically interested in work that addresses the relationship between structure and function and assesses the stability and degradation of materials under relevant environmental and biological conditions.