Interfacial studies of sisal fiber reinforced high density polyethylene (HDPE) composites

Statistical method was employed to study and describe the structure characteristics of natural fibers in this paper due to their non-uniform, irregular and composite structures. Two types of fiber surface treatment methods, namely chemical bonding and oxidization were used to improve the interfacial bonding properties of natural fiber reinforced polymeric composites. Interfacial properties were evaluated and analyzed by single fiber pull-out test and the theoretical model. The interfacial shear strength (IFSS) was obtained by the statistical parameters. The results were compared with those obtained by traditional ways. Based on this study, an improved method which could more accurately evaluate the interfacial properties between natural fiber and polymeric matrices was proposed.