Assessment of durable press performance of cotton finished with modified DMDHEU and citric acid

Abstract

Cotton apparels possess inherent tendency to form wrinkles under external stress. Conventionally selective cross-linking agents in presence of specific catalyst are applied on cotton to supress formation of creases or wrinkles via pad-dry-cure technique at high curing temperature under acidic conditions imparting stability and elasticity to the fabric. Extensive research carried out in this field identifies invariable deterioration in mechanical properties of finished cotton. In this study, two different cross-linking agents, i.e. modified DMDHEU and citric acid working on etherification and esterification crosslinking reaction with cellulose respectively were applied on cotton through selection of factors using Box Behnken experimental design in conjunction with response surface analysis and regression methods to study their DP ratings as well as other mechanical properties. Significant factors were further drastically narrowed down to reach to most specific concentrations of cross-linker, catalyst as well as other chemicals along with finishing parameters. It was found that modified DMDHEU performed better in terms of DP rating as well as overall physical properties as compared to those obtained with citric acid.

New method for determining the degree of fibrillation of regenerated cellulose fibres

“…Lenzing AG has developed and commercially applied the triazine-based crosslinkers 1,3,5-triacryloyl-hexahydro-1,3,5-triazine (TAHT) and 2,4-dichloro-6-hydroxy-1,3,5-triazine for the reduction of fibrillation (Potter and Taylor 1998;Fuchs and Dobson 2009). Dimethyloldihydroxyethyleneurea (DMDHEU) has also been widely used for improving the final performance of the fibres on a commercial scale (Talukder and Manikandan 2016;Manian et al 2017;Dhiman and Chakraborty 2017). To further reduce the toxicity and costs of the crosslinkers, benign crosslinkers based on dialdehydes, glyoxal and glutaraldehyde, are utilized for protecting the damaging of the fibres (Welch 1983;Choi et al 1999;Stoyanoc et al 2005;Yu et al 2008).…”

“…To further reduce the toxicity and costs of the crosslinkers, benign crosslinkers based on dialdehydes, glyoxal and glutaraldehyde, are utilized for protecting the damaging of the fibres (Welch 1983;Choi et al 1999;Stoyanoc et al 2005;Yu et al 2008). Furthermore, carboxylic acid-based crosslinkers such as citric acid and 1,2,3,4-butanetetra-carboxylic acid (BTCA) are thought to be sustainable approach for the crosslinking of cellulose (Yang et al 1997;Yao et al 2013;Aksoy and Genç 2015;Ye et al 2015;Liu et al 2016;Dhiman and Chakraborty 2017;Zhu and Liu 2018). Other researchers have also studied various sustainable or non-toxic crosslinkers to improve the quality of textiles, such as novel carboxylic acids (Maleic, Polymaleic and Succinic acid), phosphorus derivatives (phosphoric acid and Organophosphates), epichlorohydrin and silica derivatives (Yang et al 2010;Rojas and Azevedo 2011;Udoetok et al 2018).…”

Finishing blend cotton/PES by combination of reactive resin and chitosan

“…Limunska kiselina se smatra efi kasnim sredstvom za umrežavanje makromolekula celuloze i moguće požućenje izazvano reakcijom dehidratacije i stvaranjem konjugovanog sistema može se ukloniti procesom beljenja [13]. Dhiman i Chakraborty su nedavno uporedili fi zička svojstva dorađene pamučne tkanine upotrebom modifi kovanog DMDHEU i limunske kiseline [14]. Brzina oporavka tkanine je najbolja ako se primeni temperatura kondenzacije od 160-180 o C, pri većim temperaturama tkanina požućuje i gubi jačinu.…”

Comparative studies on the durability and moisture performance of wood modified with cyclic N-methylol and N-methyl compounds

“…DMDHEU monomers are manufactured during the synthesis of urea, glyoxal and formaldehyde, with two hydroxymethyl groups (-CH 2 -OH) being the reactive functional groups of this water-soluble molecule. In padded fabrics, the reaction of the hydroxymethyl groups with hydroxyl (OH) groups of adjacent DMDHEU monomers (selfcondensation) or OH groups of cellulose via ether bonds (co-condensation) were reported as reaction mechanisms during curing at elevated temperatures (Dhiman and Chakraborty 2017). Ether-modified DMDHEU (mDMDHEU, Fig.…”