Polyoxymethylene is a material which has excellent mechanical properties similar to Nylon-6 filled with 30% GF. 75% POM and 25% glass fibre (POMGF) were blended with nanoclay to increase the tensile and flexural properties. Samples were extruded in twin screw extruder to blend POMGF and (1%, 3%, and 5%) Cloisite 25A nanoclay and specimens were prepared by injection moulding process. The tensile properties, flexural properties, impact strength, and hardness were investigated for the nanocomposites. The fibre pull-outs, fibre matrix adhesion, and cracks in composites were investigated by using scanning electron microscopy. 1% POMGF nanocomposite has low water absorption property. Addition of nanoclay improves the mechanical properties and thermal properties marginally. Improper blending of glass fibre and nanoclay gives low tensile strength and impact strength. SEM image shows the mixing of glass fibre and nanoclay among which 1% POMGF nanocomposite shows better properties compared to others. The thermal stability decreased marginally only with the addition of nanoclay.
The degrading property of cellulose by the enzyme is utilized in improving the surface properties by removing the protruding fibers from the surface of the yarn. In this work, the regular and compact yarns made out of same mixing at various stages of chemical processing were treated with cellulase enzyme with different levels of concentration and temperature. Measurement of the weight loss, bending rigidity, wicking rate, work of rupture, shrinkage loss, tenacity and elongation of the yarn were studied for the two different yarns. Bending rigidity and wicking rates were found to decrease and increase respectively in normal yarns compared to compact yarns. All the above trends therefore suggest that the compact yarns are not much affected by the concentration of the enzyme compared to the regular yarns. As the concentration of the enzyme was increased, the weight loss, bending rigidity, shrinkage loss, twist liveliness, tenacity, work of rupture, elongation and wicking rate were also found to vary irrespective of the spinning system.
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