Page 1 :
Assignment 4, Bsc 3 year, , Q.1 Explain the term solubility parameter. On what, factors it depend., , Q.2 Explain the phase diagrams of polymer solvent system, showing both lower and upper critical solution, temperatures, , for, , i) Change in enthalpy (AH), , ii) Change in entropy (AS), , iii) Change in free energy (AG), , Q.4 Give the preparation, properties and uses of, i) Nylon 6, , ii) Nylon 6,6, , iii) Nylon 6,10, , iv) Nylon 11, , Q.5 Write note on, , i) Novalac formation, , , , ii) Resol formation