Photon transmission technique for monitoring free radical crosslinking copolymerization in various crosslinker contents

Abstract

Abstract Photon transmission technique was used to monitor the free radical crosslinking copolymerization (FCC) of acrylamide (AAm) and N , N ′-methylenebis (acrylamide) (Bis) in time. FCC experiments were performed with various Bis contents. It was observed that transmitted photon intensity, I tr decreased dramatically at a certain gelation time, which is attributed to the increase in scattered light intensity, I sc during macrogel formation from interconnected microgels. Increase in I sc was modeled using Rayleigh's equation where gelation time was found to be proportional to the volume of the microgels.