Influence of hemp fibers with modified surface on polypropylene composites

摘要

Hemp fibers (HF) were treated with gamma-Aminopropyltriethoxysilane, gamma-Glycidoxypropyltrimethoxysilane, gamma-Methacryloxypropyltrimethoxysilane (MPS) and potassium permanganate (KP), without alkaline pretreatment, to improve the mechanical properties of polypropylene (PP)/HF composites for automotive parts. MPS and KP treatments were the most efficient in splitting HF bundles and separation of elementary fibers and led to better micro- and nano-mechanical properties in composites. PP modulus-of-elasticity increased with 67% in PP/HF-MPS, with 69% in PP/HF-KP and with only 30% in PP/untreated fibers. KP led to mild oxidation of HF with good effect on mechanical properties and was proposed as cheap and effective treatment of HF, easily applicable industrially. (C) 2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.