Fabrication Of Multicomponent Research Articles

Enhanced interaction of dye molecules and fibers via bio-based acids for greener coloration of silk/polyamide fabric

Multi-component fabrics combined with natural silk fibers and man-made polyamide fibers are good choices for high-quality textile owing to the remarkable comfort and excellent resistance. The silk/polyamide fabric colored with reactive dyes generally shows good fastness, but the problems still remain that large dye effluent discharge, high chemical consumption, and long-time dyeing process. To counter these issues, herein we report a greener coloration method without any salt or alkali added for the coloration of silk/polyamide fabrics. Three bio-based acids like acetic acid, citric acid, and tannic acid were introduced into the dye solution to improve the interaction of dye molecules and fibers. Much of the focus has been given to understand the mechanism between the dye molecules, bio-based acids and fibers, which was determined through dynamic surface tension and UV–visible absorption spectrum measurement. Through this, it was found that the citric acid due to its maximum number of carboxyl groups than acetic acid and tannic acid promoted the disaggregation of dyes and enhanced the dye diffusion to fiber surface. As a result, the dye fixation and color strength of silk and polyamide fibers were all significantly improved when using citric acid at pH 6 with the steaming for 5 min. From the SEM analysis, it was seen that the surface morphology of silk/polyamide fibers was not so much affected. Compared with the traditional dyeing method, this method exhibited enhanced color performance with a shorter dyeing process, lower chemical consumption and nice fastness property. This work presented a potential and practical application of natural additives in the dyeing of multi-component fabrics to achieve eco-friendly and high-quality textile products.

High viscosity hydroxypropyl methyl cellulose to improve inkjet printing for cotton/polyamide fabrics

When dyes were used for inkjet printing on multi-component fabrics, the complex acid-base conditions, high temperature and high humidity posed a challenge to the stability of water-soluble polymers covered the surface of the fabrics. In this study, hydroxypropyl methyl cellulose (HPMC) was used to construct a continuous film on the surface of cotton/polyamide interwoven fabric. The results show that the formation of ridges between fibers is closely related to the properties of HPMC. Fibers in the yarn were connected to each other by HPMC, which prevented inks from penetrating into the bottom of the yarns. Meanwhile, HPMC maintained high viscosity under acidic conditions, which provided conditions for reactive dyes to dye polyamide fibers under acidic conditions. Compare with sodium alginate, the color depth of cyan, magenta, yellow and black improved by 75.1 %, 101.8 %, 181.3 %, 207.5 % on cotton/polyamide fabrics using HPMC, separately. Hydroxypropyl methyl cellulose is effective to improve inkjet printing for cotton and polyamide fiber, which has the possibility of widespread application in natural fiber and synthetic fiber. • Hydroxypropyl methyl cellulose membrane is constructed to connect adjacent fibers. • The formation of ridge structure is due to the high viscosity of HPMC solution. • The ink penetration is constrained along the direction perpendicular to the fabric. • The inkjet printing effect of C/PA fabric is improved with the help of HPMC film.

Predictive geometric models for some hygienic properties of multi-component fabrics

This paper is devoted to the geometric and computer simulation of hygienic properties of fabrics which are considered as multi-parameter and multi-component systems. We consider predictive models of fabric hygroscopicity and air permeability. There is a problem of building co-ordinate geometric models on condition that the set of experimental data is limited. We solve the problem for static multi-component systems. All models are considered as monoidal surfaces in the space of input and output parameters. The paper proposes an algorithm of building linear and quadratic models of fabric properties. Results of the investigations allow us to substantiate producer’s choice of fabric construction and composition for manufacturing the clothes of special purpose. The method suggested in the paper is one of geometric modulus of the software HYPER-DESCENT which has been developed formerly. Our geometric models together with software HYPER-DESCENT may be applied for simulation and prediction the properties of multi-parametrical systems or technological processes of light industry.

Analysis ballistic impact modeling of multicomponent fabrics with jalaba structure

Various textile materials have been employed in the past for protection against the ballistic with only limited satisfaction without realizing in underlying mechanism of ballistic impact. The multicomponent fabrics was prepare by nylon yarn with plain constraction with thickness of 0.18 mm. The multicomponent fabrics were made 35 layers (laminated) with various thickness. A computational constitutive model has been developed to characterize the progressive failure behaviours of multicomponent fabrics with jalaba structure as reinforcement under high velocity impact conditions. Test result indicates that multicomponent fabric with jalaba structure can reach second level of International Standar of NIJ-010104 for hand gun (revolver) at shoot distance 5 meters. If compared with panel from biotextile composite the multicomponent fabrics have advantages in structure stability, flexibility, lightly and confortable. The integrated modeling was sucessful utilized to predict the damage and ballistic bihavior of multicomponent fabrics to various ballistic impact conditions.