Investigation of Flexible Crosslinking Systems for the Retention of Mechanical Strength and Abrasion Resistance in Durable Press Cotton Fabrics Investigators:
نویسندگان
چکیده
N-methylol compounds, such as dimethyloldihydroxyethyleneurea (DMDHEU), are the most commonly used durable press finishing agents for cotton fabrics by the industry. In this research, we have examined the effects of the catalyst systems used for DMDHEU on the mechanical strength of the crosslinked cotton fabric. The catalysts induce degradation of cellulose as indicated by the decrease in the tensile strength of cotton fabric. The magnitude of fabric strength loss is effected by the temperature, time, and concentration of the catalyst. The fabric strength loss also depends on the nature of the cation and the anion of the catalyst. An activated catalyst system, which includes an organic acid, causes more severe fabric tensile strength loss due to additional acid-catalyzed cellulose degradation. The tensile strength loss caused by the crosslinking and the degradation of cellulose for the cotton fabric treated with DMDHEU was measured. In the presence of DMDHEU, the catalyst causes less fabric tensile strength loss than that caused by the catalyst alone, possibly due to the formation of a complex with DMDHEU. Because a catalyst system plays such an important role in influencing the strength loss of cotton fabrics crosslinked by DMDHEU, the selection of the catalyst system and its concentration is crucial for optimizing the tensile strength retention of the finished fabrics.
منابع مشابه
Investigation of Flexible Crosslinking Systems for the Retention of Mechanical Strength and Abrasion Resistance in Durable Press Cotton Fabrics
N-methylol compounds, such as dimethyloldihydroxyethyleneurea (DMDHEU), are the most commonly used durable press finishing agents for cotton fabrics. Polyfunctional carboxylic acids are becoming important as non-formaldehyde replacements for these N-methylol reactants. The use of both chemistries has been shown to cause an irreversible reduction in the physical properties of finished fabric, be...
متن کاملInvestigation of Flexible Crosslinking Systems
The tensile strength of durable press finished cotton fabrics is significantly reduced as a result of the crosslinking process. In this research, we investigated the effects of acid degradation and crosslinking of cellulose on the mechanical strength of the cotton fabric crosslinked with polycarboxylic acids, and evaluated various factors influencing the mechanical strength of durable press fin...
متن کاملEffects of Polycarboxylic acids on Untreated Cotton and Solubilised Sulphur Dyed Cotton
A number of polycarboxylic acids butane tetracarboxylic acid BTCA, polyacrylic-co-maleic acid PAMA, citric acid, maleic-itaconic MA-IA were examined, in combination with sodium hypophosphite SHP in order to give a similar high fabric crease recovery performance and whiteness index to traditional formaldehyde based crease agents. BTCA showed to be the best crease resist agent for crosslinking co...
متن کاملEffect of Abrasion Process on Reflectance Factor and Color Change of Chenille Woven Fabrics
This paper focuses on effect of abrasion process on color and reflectance factor changes of dyed woven fabrics containing 100% acrylic chenille yarns in weft and cotton warp yarns. Three fabrics having 12, 14 and 16 weft per centimeter were dyed with three basic dyes in different hues. Four different abrasion levels, i.e. 50,200,400 and 650 were selected to abrade samples. The obtained results ...
متن کاملInvestigation of the Model of Microscopic Contact Parameters for Grinding M200 Using Elastic Abrasive Tool
In this study; utilizing the elastic matrix ball has higher processing efficiency and better superficial quality than traditionalgrinding. The diversity of elastic abrasive tool characteristics contact with bend surface results in irregular wear abrasion,and abrasive tool machining status gets complicated. There is no theoretical interpretation of parameters affecting the grinding accuracy. Bec...
متن کامل