Loading...
Search for: textile-finishing
0.006 seconds

    Applications of stimuli responsive hydrogels: A textile engineering approach

    , Article Journal of the Textile Institute ; Volume 104, Issue 11 , 2013 , Pages 1145-1155 ; 00405000 (ISSN) Bashari, A ; Hemmati Nejad, N ; Pourjavadi, A ; Sharif University of Technology
    2013
    Abstract
    Stimuli responsive hydrogels (SRHs) are smart materials with reversible changes in their properties through the environmental stimulus variations. Although SRHs have been used in various medical applications such as sensors, drug release systems and, etc., they are still being actively researched on other sectors such as functional textiles and smart clothing. One of the best methods to produce textiles with more functionality is smart finishing of textile by surface modifying stimuli responsive hydrogels. In this paper, literatures on SRHs applications, methods and application of some SRHs on textile have been thoroughly discussed  

    Effect of stimuli-responsive nano haydrogel finishing on cotton fabric properties

    , Article Indian Journal of Fibre and Textile Research ; Volume 40, Issue 4 , 2015 , Pages 431-436 ; 09710426 (ISSN) Bashari, A ; Hemmati Nejad, N ; Pourjavadi, A ; Sharif University of Technology
    National Institute of Science Communication and Information Resources (NISCAIR)  2015
    Abstract
    Cotton fabrics have been prepared with smart properties by functional finishing with stimuli-responsive nano gel. A biopolymer (chitosan) and a synthetic polymer (poly-NiPAAm) have been used for the synthesis of nano gel through semi-batch surfactant-free dispersion polymerization (SB-SFDP) method. The incorporation of nano gel to textile fabrics is achieved by pad-dry-cure procedure, using an aqueous nano gel dispersion and 1,2,3,4-butantetracarboxylic acid as a crosslinking agent. With this cross linking method, it is possible to integrate the nano gel into the cotton fabric’s structure with good resistance to washing. The changes in physiological comfort parameters of cotton fabric such... 

    Photocatalytic decomposition of direct red 16 and kinetics analysis in a conic body packed bed reactor with nanostructure titania coated Raschig rings

    , Article Chemical Engineering Journal ; Volume 151, Issue 1-3 , 2009 , Pages 295-301 ; 13858947 (ISSN) Saien, J ; Asgari, M ; Soleymani, A. R ; Taghavinia, N ; Sharif University of Technology
    2009
    Abstract
    A conic body packed bed reactor, internally irradiated with a UV-C lamp and equipped with circulating upflow stream was employed to investigate the decomposition of a widely used azo dye, direct red 16, in water. The synthesized nanostructure TiO 2 photocatalyst particles were immobilized on the surface of transparent Raschig ring packings. Solutions with initial concentration of 30 mg L -1 of dye, within the range of typical concentration in textile waste waters, were treated under the mild operating conditions of natural pH of 6.75 and temperature of 25 °C. Investigations on the active species showed that hydroxyl radicals play the major role in the process, providing a perfect degradation... 

    Kinetics investigation of the photocatalytic degradation of acid blue 92 in aqueous solution using nanocrystalline TiO2 prepared in an ionic liquid

    , Article Progress in Reaction Kinetics and Mechanism ; Volume 34, Issue 1 , 2009 , Pages 55-76 ; 14686783 (ISSN) Ghasemi, S ; Rahimnejad, S ; Rahman Setayesh, S ; Hosseini, M ; Gholami, M. R ; Sharif University of Technology
    2009
    Abstract
    TiO2 nanoparticles were prepared by the sol - gel process using 2-hydroxylethy- lammonium formate as an ionic liquid. Nanoparticles were crystallized at various temperatures (300-700°C). The products were characterized using X-ray diffraction (XRD), nitrogen adsorption - desorption isotherms and scanning electron microscopy (SEM) techniques. It was found that the resulting TiO2 nanoparticles had good thermal stability either to resist collapse or the anatase-to-rutile phase transformation during heat treatment. The photocatalytic activity of the nanocrystalline TiO2 was evaluated by the degradation of Acid Blue 92 (AB92) which is commonly used as a textile dye. The results showed that the...