A Preliminary Study: The Influence of Alkali Treatment on Physical and Mechanical Properties of Coir Fiber

Abstract

<p>This research was conducted to analyze the alkali treatment in improving the quality of coir fiber. Study coir fiber done by specifying the physical characteristics and methods of making specimen, mechanical treatment and testing the tensile strength of single fiber. Determine the characteristics physical of the fiber is done by observing and measuring the diameter of the fiber directly, testing the density and moisture content testing. Chemical treatment is done by the method of alkali. Single coir fibers for the treatment carried out using NaOH 5%. Alkali solution set with a variation of the submersion of 0, 1, 2, 3, and 4 hours. Single fiber tensile strength testing is done according to standard ASTM C1557-2003. Tensile tests showed that an alkali treatment can increase the tensile strength of single fiber of 27.9% in immersion lye for 2 hours compared without soaking and increase the elongation of over 20% compared without soaking.</p

A Preliminary Study: Influence of Alkali Treatment on Physical and Mechanical Properties of Agel Leaf Fiber (<i>Corypha gebanga</i>)

“…presented by Setyanto et al [21] indicates that alkali treatment tends to decrease the density of the fiber due to the loss of hemicellulose, lignin, wax, grease, and dirt from the fiber surface so that it will lead to lower fiber density, but alkali treatment can also improve the tensile strength of a single coir fiber.…”

Effect of Alkali Treatment on the Mechanical Property of Natural Fiber in a Concrete-A Mini Review

“…However, it increases the tensile strength of a single fiber by 27.90% in immersion lye for 2.0 hours as differentiate without soaking and also increases its elongation by over 20.0% as compared without soaking fiber. Therefore, based on analysis, the treatment time of fiber preparation for soaking into the alkali concentration will affect coir fiber quality of its tensile strength and as well as elongation [14]. An experimental study conducted by [15] on the treatment of Pineapple Leaf Fiber (PALF) by alkali treatment through varying concentrations (4.0%, 8.0% and 12.0%) for 6hrs absorption interval at normal room temperature for Reinforced Cement-Based Composites material; by adding different content (1.0%, 4.0% and 7.0% w/w cement) to the concrete mixture with a proposed mix design ratio of 2:1 (sand: cement) with constant water ration of 0.550.…”

In situ synthesis of hierarchical structured cotton fibers/MnO2 composites: a versatile and recyclable device for wastewater treatment

“…Alkali treatment of cellulose has been an important pretreatment step in the production of various cellulose derivatives since it was activated by the alkali solution for the main reactions. 24 As shown in Scheme 1, the alkali pretreatment of cotton bers with NaOH solution results in the transformation of nonactive cotton cellulose to alkali-activated cotton cellulose. Then, with the addition of Mn 2+ , the sodium salt of Cell$O À Na + was exchanged with the manganese salt of (Cell$O À ) 2 Mn 2+ due to higher electronegativity of manganese (1.55) than sodium (0.93).…”