Papers by Author: Li Ping Xu

Abstract: This study is an attempt to optimize the parameters for the neckline of children’s T-shirts. Experiments are made with six different kinds of knitted fabrics to analyse the relationships between fabric performance, sewing conditions and the neckline elongation of T-shirts. The result shows that there is a high correlation between course density, wale density, linear density, and T-shirt neckline. A multivariate regression analysis results in the establishment of a mathematical model, through which the neckline elongation can be obtained without sample trials so that the parameters for children’s T-shirt neckline are optimized and the design process simplified.

Abstract: Reactive dyes have been widely used in the dyeing of bright colourful silk fabrics. The discoloration and degradation of Reactive Red K-2G in waste water were discussed in this paper. A new heterogeneous photocatalyst named loading phthalocyanine sulfonic iron fibers (FePcS-F) was prepared by phthalocyanine sulfonic Iron supported by modified cellulose fibers in acidic condition. The photocatalytic degradation of Reactive Red K-2G was characterized by discoloration rate to evaluate the effect of catalyst dosage, catalyst loading (CFePcS-F) and solution pH. The results proved that increasing catalyst dosage and CFePcS-F significantly accelerated the dye degradation. FePcS-F catalyst showed higher photocatalytic activity when the solution’s pH value is equal to or less than 6.0, compared to alkaline medium.