Soil-release behaviour of polyester fabrics after chemical modification with polyethylene glycol

17th World Textile Conference AUTEX 2017 - Shaping the Future of Textiles

Miranda, T.M.R.^1 ; Santos, J.^1 ; Soares, G.M.B.^1

Minho University, 2C2T, Centre for Textile Science and Technology, Department of Textile Engineering, Guimaraes, Portugal^1

关键词: Carboxylic acid groups;    Chemically modified;    Electrostatic charges;    Finishing process;    Mechanical performance;    Modification process;    Resulting materials;    Water repellent surfaces;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/254/3/032005/pdf
DOI  :  10.1088/1757-899X/254/3/032005

来源: IOP

【 摘 要 】

The fibres cleanability depends, among other characteristics, on their hydrophilicity. Hydrophilic fibres are easy-wash materials but hydrophobic fibres are difficult to clean due to their higher water-repellent surfaces. This type of surfaces, like polyester (PET), produce an accumulation of electrostatic charges, which favors adsorption and retention of dirt. Thus, the polyester soil-release properties can be increased by finishing processes that improve fiber hydrophilicity. In present study, PET fabric modification was described by using poly(ethylene glycol) (PEG) and N,N'-dimethylol-4,5-dihydroxyethylene urea (DMDHEU) chemically modified resin. Briefly, the modification process was carried out in two steps, one to hydrolyse the polyester and create hydroxyl and carboxylic acid groups on the surface and other to crosslink the PEG chains. The resulting materials were characterized by contact angle, DSC and FTIR-ATR methods. Additionally, the soil release behavior and the mechanical properties of modified PET were evaluated. For the best process conditions, the treated PET presented 0° contact angle, grade 5 stain release and acceptable mechanical performance.