Textile Engineering > GATE 2020 > Textile Finishing
The work of adhesion (WSL) depends on the surface tension (γLV) of the liquid and the contact angle (θ) formed on a surface and is expressed as γLV(1 + cos θ).
1 The WSL for a given fabric and a liquid is reduced to 1/3rd of the original value after oil repellent treatment. If the measured contact angle of the untreated fabric is 60°, what is the percent change in the contact angle after the treatment?
Correct : 100
Similar Questions
Dimethylol dihydroxy ethylene urea (DMDHEU) is a
The wet expression for a padding mangle is set at 80%. If the add-on of a flame retardant chemical required on the fabric is 2% then the concentration (g/L) of...
Determine the correctness or otherwise of the following Assertion [a] and Reason [r] Assertion: Application of an optical brightening agent makes the white fab...
Total Unique Visitors
Loading......