Thermal properties of novel polymers based on poly(hydantoin-methyl-p-styrene) and their substrates

Abstract

The following compounds have been synthesized: (a) hydantoins 5,5-dimethylimidazolidine-2,4-dione (1), 1 (6), (two of them are unknown: 5 and 6); (c) macromolecular compounds: poly(chloromethyl-p-styrene) (7), used as reference, and three polymers (two of them are novel) obtained by substitution of hydantoins 1-3 to poly(methyl-p-styrene) (8-10). Their thermal properties have been studied by thermogravimetry. It was found that the chemical structure, tautomerization, and intermolecular interaction influence the thermal stability of substrates. The presence of phenyl rings causes the increase of resistance of studied hydantoins. The obtained polymers are characterized by significantly improved thermal stability comparing to poly (chloromethyl-p-styrene). The mechanism of thermal degradation of investigated polymers and explanation of their thermal resistance has been proposed. The relatively high temperatures of glass transition of polymers have been determined by DSC.

Thermal and impedance studies of poly(vinylidene chloride-co-acrylonitrile)-based gel polymer electrolyte

“…The residual mass of about 20% at 800 C can be assigned to the carbonaceous residue formed at both previous stages. 13 It has been concluded that the thermal stability decreased with increasing content of EC.…”

N-Halamine Hydantoin-Containing Chitosan: Synthesis, Characterization, Thermal and Photolytic Stability Studies

“…Furthermore, the advantage of these materials is the possibility of their regeneration in the halogenation process, thanks to which they can be used many times [ 33 ]. Few previous works were devoted to polymeric materials based on polystyrene derivatives chemically modified with hydantoins, which were then chlorinated [ 34 , 35 , 36 , 37 ].…”

Advances in studies of thermal degradation of polymeric materials Part I. Literature studies

“…Współczesne trendy naukowe obejmują również grupę polimerów o właściwościach biocydowych, które mogą być wykorzystane tam gdzie jest wymagana duża sterylność (filtry do wody pitnej, urządzenia medyczne, wyposażenie szpitali) [89][90][91][92][93][94]. Przykładem takich materiałów mogą być pochodne polistyrenu z ugrupowaniami Nhalaminowymi.…”