STUDENT’S NAME: ARCHIT MISHRA, PRANAV KUMAR & VIRENDERA
Project Title: Finishing of Cotton based Garments with Acrylic Acid in Absence of Phosphorus based catalyst
Project Guide: Dr.Debasish Das, Mr.Bikas Agrawal
Background: Finishing of cotton using resins from methylolated urea derivatives such as DMDHEU results in some disadvantages in respect of formaldehyde splitting during processing and use endangering the health of processors and users. Use of poly (polycarboxylic acid) such as Butance Tetracarboxylic acid and Cyclopentane Tetracarboxylic acid etc. as substitude finishing agents appears to be much more prospective in this respect. But they are prohibitively expensive and their application is associated with use of phosphorous based catalyst which again has environmental problem.
Objective: To improve wrinkle recovery of cotton based garments by applying acrylic acid as formaldehyde-free chemical agent in presence of combinations of either of
1. K2S208 and sodium format as catalyst
2. K2S208 and sodium citrate as catalyst
Methodology:Cotton based garment duly manufactured by us will be finished with acrylic acid in presence of K2S2O8 and some Organic acid following dip-spin-tumble dry-iron-cure technique and attainable changes in the properties of garment including wrinkle recovery, strength etc were assessed.
Findings:Application of 8% AA in presence of 0.5% K2S208, 6% Sodium citrate produced improvements in tensile strength, tear strength, flexibility, MR% for substantial improvement in wrinkle recovery comparable to that obtained in DMDHEU finish.
Conclusion: Acrylic Acid finish was found to bring improvement in WRA, retaining the other physical properties.