there are so many crosslinker agets for your project

such as diamines like jeffamines and other diamines

other group of crosslikers like diols and diacides could be used

but it needs to investigate !

Thanks for your answer.

Do you know what is the best method to polymerize hydrogel?

UV radiation, gamma irradiation or using microwave?

There are many different methods to achieve polymerization.  You may find it easiest to use a thermal initiator like Trigonox 141 or a UV initiator like, DMPAP (2-2 dimethoxy 2 phenylacetophenone).  As for a crosslinker consider something like  EGDMA Ethyleneglycol Dimethacrylate.  Also an oxygen free environment will also help facilitate the polymerization.  Good luck.  

Thanks Dr Michael for your answer.

For UV polymerization, I'm planning to use UV curing machine Omnicure s2000

What do you think?Do you have a better idea?

Thanks

There are many good commercial UV curing units. Although there are many books written about curing polymers, simplistically, curing is really about discovering the correct UV intensity (watts per square centimeter) and the exposure length necessary to achieve the desired cure. Varying the UV intensity and/or the exposure length will allow you to manipulate the resulting polymer chain length. This in turn effects other parameters like modulus, tensile strength and swelling. Any way my point is that almost any unit will do as long as you make sure you have a UV radiometer so you can carefully calibrate the UV intensity for each trial as the UV bulb and the light guide will degrade over time.

Dear Mohd Azri

Did you find which UV cross linker worked best for PVP?

Thank you.

Did you find which UV cross linker worked best for PVP?