Effects of alkali treatment on electrical and spectral properties of coir fibre

Vegetal fibers in polymeric composites: a review

“…Vegetable fibers have considerably complex structures, defined by a wide variety of organic compounds such as lignin, hemicellulose, waxes, fatty acids, fats, pectins Schematic representation of plant fiber structure: primary wall, middle lamella, lumen, S1 -external secondary wall, S2 -middle secondary wall and S3 -internal secondary wall among others, and their properties have been investigated by several researchers [13][14][15][16][17][18][19][20][21][22] . Cellulose, hemicellulose and lignin are the three main constituents of vegetable fibers.…”

Accelerated retting cum softening of coconut fibre

“…Some reports (Varma et al, 1984;Mahato et al, 1993Mahato et al, , 1995Mahato et al, , 2009Sreenivasan et al, 1996;Anto et al, 1998;Gu, 2009;Brígida et al, 2010;Manilal et al, 2010) are available on effects of chemical treatments (viz., sodium hydroxide, hydrochloric acid, acetic acid, nitric acid, hydrogen peroxides) on coconut fibres. Limited work (Anto et al, 1998;Sarma, 2001;van Dam, 2002) is reported on softening of coconut fibre with an aim to study the subsequent spinnability.…”

Influence of chemical modification on hemp–starch concrete

“…3a, S1 treated fibers present the highest temperature of degradation rate at 316°C compare to other samples, moreover S6 treated fibers present a good thermal stability at high temperature with 28 wt.% of residues (Table 3). It is reported that the alkali treatment on coir fiber enhances the thermal stability of the fibers and maximum moisture retention [19]. Table 3 Weight losses of untreated and treated samples at various temperatures.…”

“…This makes the surface of the hemp hurds rough by revealing the fibrils. This modification of hemp hurds morphology may create more voids and effective surface area available for wetting by the matrix [19,20].…”