“…There is vast literature, based on fundamental and empirical approaches, dealing with gel and glass effects [27][28][29][30], together with reviews focused on process improvement by mathematical modeling [31][32][33]. Some models attempt to correlate kinetic constants [8,34,35], or transport properties of polymer and monomer [36][37][38] with conversion, temperature, free volume/chain end mobility [6,[37][38][39][40][41], or to view chain growth as a statistical phenomenon leading to different states based on some relevant kinetic parameters, or on diffusion/reptation theories [42][43][44][45][46][47][48].…”