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Information Journal Paper

Title

Assessment of the biodegradability of poly-lactic acid-canola stem flour composites against natural biological agents

Pages

  50-61

Abstract

 In the present research, the biodegradability of poly-lactic acid-Canola stem flour composites in three levels of 25, 35, and 45% Canola stem flour made by compression molding technique were studied. In order to study the biocompatibility behavior of the composite, three methods of biological degradation were used for Trametes versicolor and Gloeophyllum trabeum fungi, longterm water absorption and soil burial for 4 months. The results of statistical analyzes showed that the composites weight loss due to the degradation by fungi and burial in the soil was imcreased as the amount of rapeseed Canola stem flour in the composite increased while pure poly-lactic acid showed a very high durability against these agents. In addition, there was no effect on the weight loss of samples in the long run leach test so that the weight of composites and poly-lactic acid samples was constantly increasing and there was no effect on weight and thickness loss. The growth of fungi myceliums was clearly detectable and also detectable in images of electron microscopy from the fracture properties of composites. Unlike poly-lactic acid, fungi myceliums crossed the polymer into rapeseed stem flour and reduced the weight of the composites. The results of the FTIR spectroscopy on poly-lactic acid before and after exposure to the Gloeophyllum trabeum fungus confirmed the validity of the above results. According to the results of this study, poly-lactic acid, as a biodegradable polymer, has been shown to be very durable against degradation by natural biological agents.

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    • Cite

    APA: Copy

    DEHGHAN, M., Ahmadi Lajimi, A., & DAHMARDEH, H.. (2019). Assessment of the biodegradability of poly-lactic acid-canola stem flour composites against natural biological agents. IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH, 34(1 (66) ), 50-61. SID. https://sid.ir/paper/393140/en

    Vancouver: Copy

    DEHGHAN M., Ahmadi Lajimi A., DAHMARDEH H.. Assessment of the biodegradability of poly-lactic acid-canola stem flour composites against natural biological agents. IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH[Internet]. 2019;34(1 (66) ):50-61. Available from: https://sid.ir/paper/393140/en

    IEEE: Copy

    M. DEHGHAN, A. Ahmadi Lajimi, and H. DAHMARDEH, “Assessment of the biodegradability of poly-lactic acid-canola stem flour composites against natural biological agents,” IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH, vol. 34, no. 1 (66) , pp. 50–61, 2019, [Online]. Available: https://sid.ir/paper/393140/en

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