Investigation of Thermal Behavior of Inter Penetrating Polymer Network (I.P.N) between N-vinyl Pirrolydon-Vinyl Sulfonic acid Hydrogels

Subject Areas : The Application of Chemistry in Environment

Amir Sepehrianazar ¹ , Anahita Noie ²

1 - Department of Chemistry, Ahar Branch, Islamic Azad University, Ahar, Iran
2 - Department of Chemistry, Ahar Branch, Islamic Azad University, Ahar, Iran

Received: 2022-06-02 Accepted : 2022-09-18 Published : 2021-01-20

Keywords: temperature, Swelling, Vinyl pyrrolidone, Vinyl sulfonic acid, I.P.N Hydrogels,

Abstract :

Hydrogels are 3-Dimensional (3-D) polymers that are water-insoluble. The functional groups in Hydrogels lead to water absorption and swell. In the Interpenetrating polymer network (I.P.N), polyvinyl sulfonic acid P(VSA) is imprisoned in the cross-linked polyvinyl pyrrolidone (PVP) because of the higher Maxwell energy of PVP rather than P(VSA).In this work, we prepared co-hydrogels by free radical polymerization method using the two monomers PVP and PVSA. The azobisisobutyronitrile (AIBN) as an initiator and N,N-methylen-e-bisacrylamide as a cross-linker agent was used at 65ċ for five hours and 45 minutes. We prepared co-hydrogels in 1:1,1:0.5,and 1:0.25 mole ratios on feed composition. Therefore, we obtained amphiphilic hydrogels to study the complexation behavior between the two cationic and anionic monomers. Uv-Spectrometry was performed. For the first time, the structural properties were identified by FT-IR. We investigated the swelling properties of synthesized co-hydrogels (Amphiphilite hydrogels) at different temperatures. The optimum temperature for the synthesized co-hydrogels was obtained.