Chem. J. Chinese Universities ›› 2023, Vol. 44 ›› Issue (4): 20220601.doi: 10.7503/cjcu20220601

• Polymer Chemistry • Previous Articles     Next Articles

Microwave-assisted Biomineralization of Graphene to Enhance the Interfacial Interactions with Poly(lactic acid)

TANG Mengke1, JIANG Liang1, XU Wenxuan1, ZHANG Zilin1, TANG Daoyuan2, HUANG Donghui2, YANG Haoran3, GAO Jiefeng4, JI Xiang1, WANG Yanqing1(), XU Huan1   

  1. 1.School of Materials Science and Physics,China University of Mining and Technology,Xuzhou 221116,China
    2.Anhui Sentai WPC Group Share Co. ,Ltd. ,Guangde 242299,China
    3.Henan Key Laboratory of Surface and Interface Science and Technology,School of Material and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,China
    4.School of Chemistry and Chemical Engineering,Yangzhou University,Yangzhou 225200,China
  • Received:2022-09-07 Online:2023-04-10 Published:2023-01-31
  • Contact: WANG Yanqing E-mail:cumtwyq@163.com
  • Supported by:
    the National Natural Science Foundation of China(52003292);the Natural Science Foundation of Jiangsu Province, China(BK20200661);the China Postdoctoral Science Foundation(2020M681763);the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing(Wuhan University of Technology), China(2022-KF-33);the Jiangsu Provincial Postdoctoral Research Foundation, China(2021K578C);the Fundamental Research Funds for the Central Universities, China(2020ZDPYMS36)

Abstract:

Graphene nanosheets have shown great application promise in promoting the mechanical performance and gas barrier properties for poly(lactic acid)(PLA), which was dwarfed by the relatively poor interfacial interactions. Using the microwave-assisted aqueous biomineralization approach, this work disclosed a high-efficiency and ecofriendly route to direct decoration of graphene nanosheets with well-crystallized and high-uniformity hydroxyapatite nanowhiskers, yielding the biomineralized graphene(BMGr) nanohybrids with favorable dispersibility and strong interfacial adhesion. The BMGr nanohybrids were homogeneously exfoliated and adhered onto the PLA microfibers, followed by the confined processing at 60 ℃ and 3 MPa for fabrication of strong and tough PLA composite films with extensive interfacial interactions. It is worth noting that the tensile strength, Young’s modulus and tensile toughness of BMGr-reinforced PLA achieved 22.6 MPa, 199 MPa and 6.6 MJ/m3, which were 6.46, 3.75 and 8.25 times of those of pure PLA, respectively. This work is of important significance for effective decoration and surface modification of 2D nanosheets, as well as industrially viable fabrication of mechanically robust biodegradable nanocomposites.

Key words: Poly(lactic acid), Graphene, Biomineralization, Interfacial interaction, Mechanical property

CLC Number: 

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