when prepared poly acrylamide by AIBN and Ammonium persulphate ,what the differences on the rheological properties for the result ?
Stimulating question. Although it's not quite in my field....... Following
Rheological properties depend on the molecular mass, mass distribution and architecture of your polymer. The initiation kinetics is different for the two initiators you mention. Since the initiation conditions will affect the molar mass and mass distribution of the polymer you get, this will likewise affect the rheological properties. So determine which molar mass you need for certain rheological properties (from the literature), and then choose the reaction conditions needed to get that polymer (also from literature).
Dear all, in addition to the previous answers, the difference between the type of initiation systems with regards to their inflence on the rheological properties resids mainly in the formation of grafts or branching during polymerization. These grafts are presumed to be due to transfer reaction and others. So, each initiator has a certain tendency for forming braches which have a dramatic inflence on the properties. My Regards
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