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        Effect of Hemp Fiber Addition on Mechanical Properties of Acrylic Resin: Coupled Experimental and Theoretical Study

        Giray Bolayır,Koray Soygun,Melek Kılıç Avşar,Ali Boztuğ,Savaş Kaya,Konstantin P. Katin 한국섬유공학회 2022 Fibers and polymers Vol.23 No.8

        We present experimental and theoretical study of the fiber-matrix composites based on polymethyl methacrylate(PMMA) prosthetic material. Hemp fibers of different lengths and concentrations were added to PMMA. In total, ten groupsof composite samples were prepared. Flexural strength test was performed for each sample. We found that the addition ofhemp fibber significantly change the mechanical properties of pristine PMMA. The nature of the interaction between PMMAand hemp fiber were further investigated with scanning electronic microscopy, infrared spectrometry and density functionaltheory. This interaction were described atomistic level in terms of quantum descriptors of reactivity, such as chemicalpotential, electronegativity, chemical hardness and softness, electrophilicity, electrodonating and electroaccepting powers andelectrons transfer. We observed the formations of strong hydrogen bonds between the matrix and fibers, which explain theobserved improvement of mechanical properties.

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