文献类型： 外文期刊
第一作者： Fu, Xuya
作者： Fu, Xuya;Zhang, Tao;Zhang, Wenshuo;Zhong, Yuye;Li, Ying;Liu, Xinghai;Li, Houbin;Fang, Shuliang;Wang, Guannan;Deng, Yajun
作者机构：
关键词： polylactic acid; polyurethane; curcumin; UV-shielding; melt mixing
期刊名称：E-POLYMERS （ 影响因子：3.7； 五年影响因子：3.0 ）
ISSN： 2197-4586
年卷期： 2023 年 23 卷 1 期
页码：
收录情况： SCI
摘要： Biomass films with ultraviolet (UV)-shielding ability have attracted considerable attention. Curcumin was introduced into castor oil-based polyurethane (CCPU) as a chain extender, which was melt with polylactic acid (PLA) as a reinforcement to obtain biomass UV-shielding film. The excellent UV absorption and antioxidant qualities of curcumin contributed to the impressive UV-shielding capacity (97.6% UV radiation absorption) and antioxidant (51% free radical scavenging) of PLA/CCPU-20 film. In the scanning electron microscopic images of film fracture, the mixing of CCPU elastomer into the PLA matrix caused the blend films to exhibit significant toughening fracture characteristics compared to the pure PLA film. The excellent thermal stability, low water swelling degree, and low water solubility of PLA/CCPU blend films were maintained after CCPU was added to the PLA matrix. Therefore, the PLA/CCPU blend films can be considered as a potential packaging material because of its favorable UV-shielding properties and film stability.
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