As a semiconductor material, nano TiO₂ has important application value in various professional fields. Single nano TiO₂ has low light utilization and poor degradability. In order to improve the sustainability of material development, enhance the application value and performance of materials, this article combined polylactic acid (PLA) with nano TiO₂ to form a composite material, and studied its preparation, characterization, and degradation behavior. This article first analyzed the characteristics of nano TiO₂ and polylactic acid materials, then prepared and modified nano TiO₂, and finally combined it with different mass ratios of polylactic acid to form composite material samples. To verify the material performance, this article conducted experiments from two aspects: characterization of crystallization performance and analysis of degradability. The results showed that the higher the PLA mass ratio, the more ideal the degradability of the composite material. Compared to the material with a PLA mass ratio of 0%, the degradability of the material sample with a PLA mass ratio of 3% ultimately increased by 0.12%. The conclusion indicates that the polylactic acid nano TiO₂ composite material has excellent degradability, which helps to improve the environmental friendliness and application range of the material.

Dan Chen, Jun Shao, Zhengrong Xu. Study on Preparation, Properties, and Degradation Behavior of Nano-Tio₂/PolyLactic Acid Composites. Academic Journal of Materials & Chemistry (2023) Vol. 4, Issue 7: 83-88. https://doi.org/10.25236/AJMC.2023.040713.

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