外文--基于溶胶—凝胶技术的棉织物的表面处理-外文文献(编辑修改稿)

外文--基于溶胶—凝胶技术的棉织物的表面处理-外文文献(编辑修改稿)内容摘要：

overyangle.Figure 2 showed that the tensile strengthdecreased with increasing dosage of MPTS. ForCrease recovery angle/176。 7186606402602506202406005800 230406080100120Dosage of MPTS/mol/LFig. 2. Effect of dosages of MPTS on the tensile strengths of fabrics treated with concentration of the sol100% and pH of the sol 8.the existence of many hydroxyl groups, the forcesbetween the macromolecular chains of cotton fiberssuch as the hydrogen bonds are very strong. Whenthere is an external force, the breaking could firstoccur in the bonds in the internal of the molecularchains of amorphous areas but not the bonds betweenthe macromolecular chains. That means that cottonConcentration of the sol/%Fig. 3. Effect of concentrations on the crease recoveryangle of fabrics treated with MPTS mol/L and pHof the sol 8.640620600580560fabric is broken for the breaking but not the slip406080100120page of molecular chains. Furthermore, the formedtransparent flexible threedimensional silicon oxidefilm on the fabric and the conglutination between thefibers enhanced the forces between the macromolecular chains. Thus, the movements of macromolecular chains conglutinated were restricted and unevendistribution of internal stress which mostly concentrated to the molecular chains of the amorphousareas occurred. This resulted in a decline in strength.When the external force was strong enough, thebond in the internal of the molecular chains of amorphous areas was broken and the fabric destroyed.The more MPTS added, the more polymers wereanchored to the fabric and the more the cellulosemolecular chains were conglutinated. As a result,the tensile strength decreases sharply. Compared tothe sample only treated with BTCA, the increase of% in the tensile strength of the silica sol treatedfabric could be obtained when the MPTS dosage was mol/L.. Concentration of the solFigures 3 and 4 demonstrated the effects of concentration of the sol on the crease recovery angle andthe tensile strength of the cotton fabric. The creaserecovery angle increased from to ◦ andthe tensile strength increased from to 635 NConcentration of the sol/%Fig. 4. Effect of concentrations on the tensile strengthof fabrics treated with MPTS mol/L and pH of thesol 8.by increasing the sol concentration from 50 to 100%.These enhancements were acceptable, since increasing the sol concentration would increase the availability of the sol, enhance the amount of the hydrolyzedTEOS, improve the degree of the polymerization andconsequently increase the thickness of the flexiblefilm anchored onto the cotton fabric. The higherthe concentration of the sol, the thicker the flexiblefilm. When the fabric was bended for outer forces,the thick film anchored onto the surface by MPTScould trend the fabric to restore its original shapefor its flexibility. The thicker the film, the strongerthe capacity of restoring its shape and the higherthe crease recovery angle. The film also had someintensity for the silicon–oxygen–silicon bond formedby polycondensating the hydrolyzed TEOS. Whenthe outer force was imparted, the silicon–oxygen–silicon bond of the film could partly bear the internalstress and less external stress would be applied to themacromolecular chains of the cotton fabric, thus thetreated fabric could sustain greater external forces.So the film formed onto the surface of the fiber couldCrease recovery angle/176。 Tensile strength/NTensile strength/NSurface Treatment of AntiCrease Finished Cotton Fabric Based on Sol–Gel Technology719Table 2. Effect of concentrations of the sol on the abrasion resistances of fabrics treated with MPTS mol/Land pH of the sol 8.Wloss/g/m2 (10−4 )280260240Cycles40123456722020080345678910 11120200DestroypHFig. 5. Effect of pH values on the crease recovery angles1: Virgin (Anticrease finished cotton fabric)。 2, 3, 4, 5, 6, 7: Treated with sol concentrations 50, 60,of fabrics with MPTS mol/L and concentration ofthe sol 100%.70, 80, 90, 100% respectively.the value decreased. In the sol solution, the hydrolyalso improve the tensile strength of the cotton fabric and the higher the concentration of the sol, thegreater the increase in the tensile strength. In otherwords, improving the sol concentration was beneficialto enhance the crease recovery angle and the tensilestrength.The abrasion resistance experiment results arepresented in Table 2. The silica soltreated samples did not show serious damages after frictionsin 200 cycles in parison with the destruction ofthe sample only treated with BTCA in 127 cycles.That might be because silicon–oxygen–silicon bondof。