Abstract


Resin or wrinkle freefinishing is widely used in the textile industry to impart wrinkle-resistanceto cotton fabrics and garments. Considerable loss in strength and abrasionresistance of the finished fabrics has been a major concern for the industry.Enhance in dimensional stability and wrinkle resistance with resin finishing ofcotton has constantly been correlated with the lower abrasion resistance andtear strength. The strength of the fiber depends on how much the cross linkedchains can still be mutually displaced under tension in order to sufficientlyresist the applied load. The rigid cross links that are formed with the DMDHEUobviously prevent the redistribution of stresses by preventing movement withinthe fiber microstructure.


The cross linking ofcellulose molecules with these relatively rigid cross links causes stiffeningof the cellulosic macromolecular network and fiber embitterment thus droppingthe mechanical strength of the treated cotton fabrics. These same mechanismsare responsible for the reduced mechanical properties of the fiber surface thusleading to strength loss .Fiber surface property alteration, such as throughthe use of softeners, has been shown to play an important task in minimizingstrength loss.


The mixture ofinadequate scratch resistance and relatively severe tensile & tear strengthloss has been the major disadvantage for resin finished 100% cotton fabrics.The overall objectives of this work are to investigate the cause and mechanismfor loss in abrasion resistance of cross linked cotton fabrics; relationshipsbetween the molecular structure of cross linking agents and their affect on themechanical properties of cross linked textile structures; and develop atechnology for improving the Tear strength of resin finished cotton fabrics byadding special silicones.




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