【正文】 6. F. Y. Li, Y. J. Xing and X. Ding, Surf. Coat. Tech.19 (2008) 4721.17. C. X. Wang, M. Li, M. Wu and L. Chen, Surf. Rev.Lett. 6 (2008) 833.18. B. Mahltig, D. Fiedler and H. B168。 more polymerswere anchored to the fabric and more macromolecular chains were conglutinated. The polymers crosslinked to the fabrics formed a transparent ?exiblethreedimensional silicon oxide ?lm. The fabric wasbended for the excuse of external forces. When theapplied force was withdrawn, the internal stressesbetween the macromolecular chains trend the fabric to restore its original shape. The conglutinatingimproves the forces between the macromolecularchains. The anchored ?lm also improved the forcesdue to its ?exibility and its crosslinking with thefabric. So increasing the dosage of MPTS couldimprove the ability of restoring from deformation,thus enhancing the crease recovery angle. Theremight be another explanation: the capacity of outerforce resistance could be improved by the bendingrigidity which corresponded to the diameter of ?ber.MPTS worked as a bridge which made hydrolyzedTEOS aggregate mutually. The higher the dosage ofMPTS added, the greater the amount of the polymer anchored on the fabric, the thicker the diameter of ?ber. This results in stronger bending rigidity,stronger capacity of outer force resistance and highercrease recovery angle. When the MPTS dosage wasincreased further, the enhancement in the creaserecovery angle was very small. It had likely reached asaturated value. The dosage of mol/L was probably enough to aggregate hydrolyzed TEOS, anchorthe ?lm onto the ?bers and conglutinate the macro0molecular chains of ?bers. Dosage in excess wouldDosage of MPTS/mol/LFig. 1. E?ect of dosages of MPTS on the crease recoveryangles of fabrics treated with concentration of the sol100% and pH of the sol.not make signi?cant e?ect on the crease recoveryangle.Figure 2 showed that the tensile strengthdecreased with increasing dosage of MPTS. ForCrease recovery angle/176。Tensile strength/NTensile strength/NSurface Treatment of AntiCrease Finished Cotton Fabric Based on Sol–Gel Technology719Table 2. E?ect 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. E?ect of pH values on the crease recovery angles1: Virgin (Anticrease ?nished cotton fabric)。Tensile strength/NSurface Treatment of AntiCrease Finished Cotton Fabric Based on Sol–Gel Technology721Table 3. E?ect of processing methods on the abrasionresistances of fabrics treated with MPTS mol/L,concentration of the sol 100% and pH of the sol 9.Wloss /g/m2 (10?4)technology improved the physical properties of theanticrease cotton fabric to a great extent.Cycles123456100200strengths. However, probably for the interactions ofthe BTCA based anticrease ?nishing bath and thesilica sol treatment bath, the tensile strengths ofthese samples were not very high. The fabrics treatedwith Methods 3 and 4 under the conditions of twotimes of drying and one time of curing seemed to havethe best tensile strength. The ?rst time of dryingmight prevent the two treating bath from interacting,thus strengthening the e?ect of silica sol treatment.E?ect of processing methods on the abrasionresistance was summarized in Table 3. Di?erentmethods made a little di?erence. After 200 cyclesof friction, all of the samples did not have seriousdamages owing to the ?exible silica ?lm formed onthe surfaces of all samples. Excellent abrasion resistance properties could be obtained by Method 2.The abrasion resistance was a prehensive performance of ?ber intensity, extensibility and elasticity. The sample treated with Method 2 might havehad the most perfect ?lm than the other methods.The ?lm could provide the fabric excellent extensibility and elasticity, thus improving the abrasionresistance.4. ConclusionsThe concentration of MPTS selected was mol/L,the concentration of the sol was 100%, the pH wasabout 9 and the processing method of DP ?nishingfollowed by silica sol treatment was used. Comparedto the sample only untreated with BTCA, % ofthe increase in the crease recovery angle and % ofthe enhancement in the tensile strength of the cottonfabric also treated with silica sol under the betterselected conditions was obtained. The weight loss wasonly 10?4 g/m2 after friction in 200 cycles inparison with the destruction of the sample onlytreated BTCA. As a nonpolluting process, the sol–gelReferences1. C. Schramm and B. Rinderer, Fresen. J. Anal.Chem. 364 (1999) 714.2. K. S. Huang,