1.) How would you distinguish experimentally between an amphourous, a crystalline and a crosslinked polymer?
2.) Consider 3 samples of polyisobutylene. All molecules in sample A have a molecular weight 30,000g/mol; all those in B have a molecular weight of 70,000 g/mol; and those in C have a molecular weight of 100,000 g/mol. If 10g of A are mixed with 5g of B and 1g of C, Calculate average Mn and average Mw.