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Abstract: PP-based nanocomposite was prepared by blending POE elastomer and introducing nano-calcium carbonate to improve the mechanical and thermal properties of the composite. The content of POE was optimized first to achieve a suitable balance between strength and elasticity. Then the nano-CaCO3 was modified with silane coupling agent KH-570 to improve the compatibility with the resin matrix and dispersed into the matrix. The addition of nano-CaCO3 can compensate the sacrifice of strength brought by the elastomer but keep the elasticity in a considerable extent. ..........
Keywords: Polypropylene, Polyolefin elastomer, KH-570, nano-CaCO3, PA-10
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Abstract: Cotton Fabric was treated with Cationic agent after which another treatment with nano chitosan PAA was carried out to impart cationic character to the fabric capable of attracting dye anions . Cochineal ( Dactylopius coccus costa ) natural dye was used throughout this study . Nano chitosan polyacrylic acid ( CS – PAA ) was prepared for treatment of cotton fabric before dyeing with cochineal natural dye . The particle size was analyzed on the particle size analyzer since it was found to be 50 nm . Many factors for the dyeing process that may affect the dye uptake and K/S such as dye concn , dyeing pH , temp and time were also studied . The effect of mordant concn. ..........
Keywords: cotton , natural dyes , cochineal , dyeing , chitosan , cationization .
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