Can I increase the melting point of paraffin wax over 100 degrees celsius at room temperature and pressure.
Well if you were to cross link the parafin wax then it would be possible to increase the melting point.
Sadly I doubt if you will have the equipment needed, if you were to put a parafin wax in a glass ampoule and then stick it is a gamma irradation machine such as a gamma cell 220 and give it a mighty dose of gamma rays. I think you would need megagray doses then you would change the parafin into a different material. You would have a combination of chain breaking and chain cross linking. This will alter the properties of the parafin.
You can regard parafin as a shorter version of high density polyethene, it is well known that radiation will cross link polyethene. The cross linked polymer is much harder to set fire to than the untreated product. It also is harder to melt.