Question
Textile Engineering and Fibre Science Question on Essential requirements of fibre forming polymers
Polymer melt flowing through a capillary exhibits die-swell. The correct statement(s), amongst the following, is/are
A
Die-swell is due to entropic effect
B
Die-swell is dependent on capillary length
C
Die-swell is independent of processing temperature
D
Die-swell is dependent on shear rate
Answer
Die-swell is due to entropic effect
Explanation
Solution
The correct options are (A):Die-swell is due to entropic effect ,(B):Die-swell is dependent on capillary length ,(D):Die-swell is dependent on shear rate