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Melt-blended PLA/curcumin-cross-linked polyurethane film for enhanced UV-shielding ability

文献类型： 外文期刊

作者： Fu, Xuya 1 ; Zhang, Tao 1 ; Zhang, Wenshuo 1 ; Zhong, Yuye 1 ; Fang, Shuliang 2 ; Wang, Guannan 3 ; Li, Ying 1 ; Deng, Yajun 4 ; Liu, Xinghai 1 ; Li, Houbin 1 ;

作者机构： 1.Wuhan Univ, Res Ctr Grap Commun Printing & Packaging, Wuhan 430079, Peoples R China

2.China Helicopter Res & Dev Inst, Jingdezhen 333001, Peoples R China

3.Zhejiang Acad Agr Sci, Food Sci Inst, Hangzhou 310021, Peoples R China

4.Jimei Univ, Xiamen Key Lab Marine Corros & Intelligent Protect, Xiamen 361021, Fujian, Peoples R China

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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