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Effects of desilication pretreatment on rice h usk/high‐density polyethylene bio‐composites
Author(s) -
Yang Yingni,
Pang Yao,
Zhang Weiye,
Xia Rongqi,
Li Yanchen,
Liu Yi,
Guo Hongwu
Publication year - 2021
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.25913
Subject(s) - high density polyethylene , materials science , composite material , absorption of water , viscoelasticity , polyethylene , thermal stability , husk , chemical engineering , engineering , botany , biology
Rice husk (RH) is a productive agricultural residue; however, its materialization is limited by its inherent properties. The comprehensive utilization of RH can be improved via pretreatment using physical and chemical methods. In this study, we explored the effect of pretreatment (shearing, grinding, and alkaline) on the properties of RH, as well as the bio‐composites developed using RH and high‐density polyethylene (HDPE). Further, the surface morphology, chemical structure, water absorption, thermal stability, and dynamic viscoelasticity of the pretreated RH and RH/HDPE composites were investigated. The results denoted that the surface roughness of RH increased and that the silicon content partially decreased. The water absorption of the RH/HDPE composites pretreated by physical pretreatment was <2%. The occurrence of dynamic viscoelasticity indicated that the RH/HDPE composites pretreated by alkaline exhibited improved rigidity and mechanical properties. In the composites prepared using the RH pretreated by grinding, a strong bonding could be observed between the interfaces of HDPE and RH. Hence, the efficiency of RH utilization can be improved by pretreatment, and the prepared bio‐composites can increase the value of RH.