Water absorption behavior of acrylonitrile‐butadiene (NBR) latex impregnated jute nonwoven fabric composites

Abstract

ABSTRACT:Composites were fabricated by impregnating the jute nonwoven fabric in acrylonitrile-butadiene (NBR) latex. The effect of different pickup ratio (dry, wt/wt) of NBR latex to jute nonwoven fabric, viz., 0.5 : 1, 1 : 1.5, 1.5 : 1, 2 : 1, and 2.5 : 1 on the water absorption behavior of the composites were evaluated. Water absorption studies were carried out at different temperatures, viz. 30, 50, and 70°C, based on immersion weight gain method. From the sorption result, the diffusion (D) and permeation (P) coefficients of water penetrant have been calculated. Significant increase in the diffusion and permeation coefficients was observed with increase in the temperature of sorption experiments. Drastic reductions in diffusion and permeation coefficients were noticed with increase in the pickup ratio of NBR on to jute nonwoven fabric. Attempts were made to estimate the empirical parameters like n, which suggests the mode of transport, and K is a constant that depends on the structural characteristics of the composite in addition to its interaction with water. The temperature dependence of the transport coefficients has been used to estimate the activation energy parameter for diffusion (E D ) and permeation processes (E p ) from Arrhenius plots.

Water absorption behavior of cellulosic fibres polymer composites: A review on its effects and remedies

“…The water absorption behaviour polyester based composite reinforced by PLA coated sisal fibres was found to be considerably reduced [130]. Moreover, moisture absorption of the biocomposites was overcome using polymer coating of polyfurfuryl alcohol resin (PFA), polyurethane (PU) and acrylonitrile-butadiene (NBR) latex on jute nonwoven fabric and woven flax fabrics by Mokhothu and John [32], and Satheesh Kumar and Siddaramaiah [131], respectively.…”

Processing and characterization of 100% hemp-based biocomposites obtained by vacuum infusion

“…The effect of water and moisture absorption of natural fiber plastic composites is a serious concern, especially for outdoors applications, and was studied by numerous authors. [5][6][7][8][9][10][11][12][13][14][15][16][17] Moreover, the adhesion between natural fibers and the polymeric matrix is often insufficient, resulting in low mechanical properties of the composites. In addition, plant-based fibers suffer lignocellulosic degradation at low temperatures (around 200 C), limiting their applications and processing temperatures.…”