For conductive polymer which technique normally we can use? Because we cannot find by NMR and GPC due to there solubility problem, so another way to confirm?
CP-MAS NMR and TGA
Inherent viscosity from sulfuric acid, there by molecular weight.
Dynamic light scattering (DLS) can be used for looking at changes in size in polymerization reactions. This depends on the time scale, and requires also that the polymer does not fall out of solution. The sensitivity If this soluability issue is just due to high concentration, then the high sensitivity of DLS may be able to monitor or confirm your polymerization at lower concentration.
http://www.materials-talks.com/blog/2016/04/21/aggregation-kinetics-with-dls/
There are many different methods for investigating the polymerization process. You just need to clarify what kind of polymer you get and by what mechanism the polymerization process is going on, and what kind of information about the progress of the process you want to have!
Book Physico-chemical methods of polymer research
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