Synthesis and characterization of interpenetrating polymer network of polyglycidyl methacrylate and acrylamide using selenonium ylide as an initiator

Abstract

Interpenetrating polymer network (IPN) based on polyglycidylmethacrylate (PGMA) and acrylamide (AAm) was synthesized using divinylbenzene (DVB) as a crosslinking agent and diphenylselenonium 2, 3, 4, 5-tetraphenylcyclopentadienylide (selenonium ylide) as a new radical initiator. A series of IPNs were prepared by varying the concentrations of AAm, PGMA, DVB and selenonium ylide in dioxan for 90 min at 80 ± 1 °C under an inert atmosphere of nitrogen. Dual phase morphology of the synthesized IPN was revealed by scanning electron microscopy (SEM). The properties like percentage swelling, average molecular weight of network between crosslinks (Mc) and young’s modulous were direct function of linear polymer [PGMA] and initiator [Ylide] where as inverse function of monomer [AAm] and crosslinker [DVB]. The differential scanning calorimetry (DSC) curve showed glass transition temperature at 127 °C. The synthesized IPN is thermally stable up to 450 °C. FTIR, 1H NMR and 13C NMR spectroscopic techniques were used for characterization of polyglycidylmethacrylate and IPN of polyglycidylmethacrylate (PGMA) and acrylamide (AAm). FTIR spectrum confirmed the presence of PGMA, AAm and DVB in the formed IPN by showing their characteristic bands. Similarly, 1H NMR and 13C NMR spectrum of the synthesized IPN also exhibit all characteristic peaks of PGMA, AAm and DVB in the formed IPN.