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碳化物接种修改聚乳酸以最大限度地提高包装应用中的紫外线保护和机械性能

Maofan Zhou^1,2, Gengping Wan³, Guizhen Wang³

¹Centre for Polymer and Material Technologies, Department of Materials, Textiles and Chemical Engineering, Ghent University, Technologiepark 130, B-9052 Zwijnaarde (Ghent), Belgium.

ACS applied materials & interfaces

|September 15, 2023

概括

这项研究开发了使用石墨碳化物 (g-C3N4) 纳米填充剂的新型聚乳酸 (PLA) 纳米复合材料. 增强的PLA材料为包装应用提供了卓越的紫外线保护和更好的柔性.

科学领域:

材料科学材料科学材料科学
聚合物科学聚合物科学
纳米技术纳米技术

背景情况:

聚乳酸 (PLA) 是一个有前途的生物基聚合物用于包装.
纯PLA具有脆性和紫外线透明度,限制了其应用.
纳米复合材料提供了一条增强PLA性能的途径.

研究的目的:

开发和优化基于PLA的纳米复合材料,具有增强的紫外线吸收和机械性能.
为了改善PLA和纳米填充剂之间的界面相互作用.
探索石墨碳化物 (g-C3N4) 作为纳米填充剂的潜力.

主要方法:

石墨碳化物 (g-C3N4) 纳米填充剂的合成.
在氧化后使用西兰合剂 (KH570) 对g-C3N4表面进行修改.
将修改后的纳米填充剂纳入PLA矩阵.
综合性材料表征 (FTIR,XRD,DSC,DSEM,FETEM,XPS,TGA,BET) 进行.

主要成果:

经过修改的g-C3N4 (CNO-KH570) 的1重%显著增强了超越PLA和PET的紫外线吸收 (UV-C,UV-B,UV-A).
提高了柔性,在断裂时延长率增加了73% ,同时保持了拉伸模量.
增强了PLA和纳米填充剂之间的界面相互作用.

结论:

优化的PLA纳米复合材料具有卓越的紫外线保护和机械性能.
低纳米填充器负载足以显著增强性能.
这些材料显示出先进包装应用的潜力.

关键词:

吸收紫外线,吸收紫外线.混合设计的设计,混合设计.形态学形态学形态学纳米复合材料的使用方法包装材料包装材料

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