Free radical induced grafting of acrylonitrile on pre-treated rice straw for enhancing its durability and flame retardancy

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Abstract

The present investigation highlights the feasibility of a polymer grafting process to enhance the durability and flame retardancy of rice straw towards application as a low cost roofing material. The success of this grafting methodology was perceived to depend upon a bi-step pre-treatment process encompassing delignification and inorganic salts dispersion. Subsequently free radical polymer grafting of acrylonitrile onto rice straw was implemented by immersion mechanism initiated by oxalic acid-potassium permanganate initiator. The percentage of grafting, limiting oxygen index (LOI), biodegradability of the grafted rice straw and grafting yield percentage was estimated to be 57%, 27%, 0.02% and 136.67%, respectively. The weight loss of polymer grafted rice straw implied its less biodegradability over raw straw. Thus, the process of grafting contrived in the present analysis can be a promising and reliable technique for the efficient utilization of rice straw as an inexpensive roofing element through the augmentation of its durability and flame retardancy.

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APA

Mukherjee, A., Halder, S., Datta, D., Anupam, K., Hazra, B., Kanti Mandal, M., & Halder, G. (2017). Free radical induced grafting of acrylonitrile on pre-treated rice straw for enhancing its durability and flame retardancy. Journal of Advanced Research, 8(1), 73–83. https://doi.org/10.1016/j.jare.2016.12.003

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