Effects of Silane Coupling Agent on Mechanical Properties and Swelling Behaviour of Coconut Fiber Filled Polypropylene Composite

Abstract

Silane treatment used to improve mechanical properties and swelling behaviour of polypropylene/coconut fiber (PP/CF) composites by creating more adherent bonding between CF filler and PP Matrix. 3-Aminopropyltriethoxysilane (3-APE) treated and untreated composites were prepared in formulation of 10 wt%, 20 wt%, 30 wt%, and 40 wt%. The mechanical testing indicates that composite with 10 wt% has the optimum value of tensile strength, and the 3-APE treated composites shows the tensile strength was increased. By increasing of filler loading, elastic modulus was increased while the elongation at brake was decreased. Meanwhile, the swelling test discerned that the increase of filler loading increased the water absorption of composites and the presence of 3-APE reduced the equilibrium water absorption percentage.

Effect of Chemical Treatment on Physical and Mechanical Properties of Coir Fibre-Polypropylene Composites

“…In other words, the reduction in -OH groups of cellulose reduced the hydrophilic character of the fibre. Similar observation was reported in a study on the effects of silane coupling agent on coconut fibre filled PP composite [13]. The hydroxyl groups that are present on the surface of the fibres are responsible for WA.…”

“…It is well known that the alkaline treatment increasing the fibre uniformity by reducing the impurities on the fibre surfaces and providing mechanical interlocking and may offer better interface adhesion [18]. Composites treated with silane coupling agent exhibit higher elastic modulus and stiffness than similar composites without silane coupling agent [13].…”

Coconut fiber reinforced chemically functionalized high-density polyethylene (CNF/CF-HDPE) composites byPalsuleprocess

“…For example, to improve interfacial adhesion with polyolefins in composites, CNF have been treated with chemicals like alkali and methyl-metha-acrylate, 8 NaOH, sodium chlorite and acetic acid, 9 alkali, acrylic acid, diammonium phosphate (DAP) and maleic anhydride, 10 stearic acid, acetone and potassium permanganate, 11 Cr 2 (SO 4 ) 3 .12H 2 O, 12 3-aminopropyltriethoxysilane (3-APE). 13 However, in natural fiber/ polyolefin composites processed by physical/chemical treatment and surface modification of natural fibers, several fibers remaining untreated due to formation of fiber bundles fail to develop proper adhesion with the matrix in the composite; and finally, the composite material exhibits limited properties at heavy loadings and at higher temperatures. Also surface treatment of natural fibers results in additional cost and decreases the economical competitiveness of the natural fiber composites.…”

Structural, morphological and thermal properties of microcrystalline cellulose extracted from coconut husk fiber

“…Coconut husk is the mild, fluffy material that comes off coconut (Cocos nucifera L.) fruit from thick mesocarp when its miles are shredded during the processing of husk [5]. By their nature, coconut residues are a lignocellulosic material with renewable, biodegradable and biocompatible characteristics, and can be a valuable resource for natural fiber as a perfect raw material [6]. One of the agricultural waste products from the processing of coconut oil is coconut husk fiber, which belongs to the palm fiber family, and can be obtained in the tropical regions of the world, especially in South America, Africa and Asia.…”