Preparation and characterization of bio-based green renewable composites from poly(lactic acid) reinforced with corn stover

Poly(lactic acid) (PLA)/corn stover (CS) composites were prepared by melt blending different proportions of PLA and added CS. PLA was grafted with acrylic acid to improve the compatibility of the matrix with CS. PLA-g-AA interacted well with CS, resulting in a denser composite material with relative...

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Bibliographic Details
Published in:Journal of polymer research 2021-06, Vol.28 (6), Article 199
Main Authors: Guo, Jipeng, Tsou, Chi-Hui, De Guzman, Manuel Reyes, Wu, Chin-San, Zhang, Xuemei, Chen, Zhujun, Wen, Yi-Hua, Yang, Tao, Zhuang, Yong-Jie, Ge, Feifan, Chen, Zhijun, Wang, Zhaohua
Format: Article
Language:English
Subjects:
Acrylic acid
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Composite materials
Crystallization
Elongated structure
Industrial Chemistry/Chemical Engineering
Interfacial bonding
Mechanical properties
Melt blending
Original Paper
Polylactic acid
Polymer Sciences
Tensile properties
Thermodynamic properties
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Summary:Poly(lactic acid) (PLA)/corn stover (CS) composites were prepared by melt blending different proportions of PLA and added CS. PLA was grafted with acrylic acid to improve the compatibility of the matrix with CS. PLA-g-AA interacted well with CS, resulting in a denser composite material with relatively satisfactory hydrophobic properties. The barrier and mechanical properties of composites were studied, and it was found that the barrier and mechanical properties of PLA-g-AA/CS composite materials were significantly improved, especially those with 30 wt% CS provided better tensile properties and elongation at break. The structure at the tensile section of the composite material was observed using SEM. The proper amount of CS had better dispersion in the matrix, and PLA-g-AA could further improve the interfacial bonding force. The crystallization and thermal properties of the composites were analyzed using XRD, DSC, and TGA, and the effect of the CS content on the crystallinity of composites was also studied.
ISSN:1022-9760
1572-8935
DOI:10.1007/s10965-021-02559-1