Mukherjee Aparna, Halder Seema, Datta Deepshikha, Anupam Kumar, Hazra Biren, Kanti Mandal Mrinal, Halder Gopinath
Department of Chemical Engineering, National Institute of Technology Durgapur, Durgapur 713209, India.
Department of Chemical Engineering, National Institute of Technology Durgapur, Durgapur 713209, India; Department of Chemical Engineering, Durgapur Institute of Advanced Technology and Management, Durgapur 713212, India.
J Adv Res. 2017 Jan;8(1):73-83. doi: 10.1016/j.jare.2016.12.003. Epub 2016 Dec 18.
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.
本研究突出了聚合物接枝工艺在提高稻草作为低成本屋面材料应用时的耐久性和阻燃性方面的可行性。这种接枝方法的成功被认为取决于包括脱木质素和无机盐分散的两步预处理过程。随后，通过草酸 - 高锰酸钾引发剂引发的浸渍机制，将丙烯腈自由基聚合物接枝到稻草上。接枝百分比、极限氧指数（LOI）、接枝稻草的生物降解性和接枝产率百分比估计分别为57%、27%、0.02%和136.67%。聚合物接枝稻草的重量损失表明其生物降解性低于生稻草。因此，本分析中设计的接枝过程可能是一种有前景且可靠的技术，通过增强稻草的耐久性和阻燃性，将其作为廉价的屋面材料进行有效利用。
