Optimization of Synthesis Conditions of Poly(N-Vinylcaprolactam) Microgels

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In this study, we aimed to synthesis and characterization of poly (N-vinyl caprolactam) microgels. The synthesis of microgels was performed via free radical polymerization with emulsion polymerization technique in aqueous media. Four different microgels were synthesized in order to determine the effect of usage of different initiator and different reaction temperatures. Two different type initiators were used for microgel synthesis reactions such as 2,2 -azobisisobutyronitrile (AIBN) and 2,2’-azobis(2-methylpropionamidine)dihydrochloride (AMPA). Microgels were synthesized in two different temperatures such as 70 and 80°C in presence of AIBN or AMPA. Then, product yields (reaction efficiency) of all microgels were determined. Structural analyses of microgels were carried out using Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscope (SEM). In addition, zeta potentials and particle size distributions of all microgels were determined. According to results, the highest product yields were obtained from reaction which is used AMPA as initiator at 70°C reaction temperature.

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Poly (N , vinyl caprolactam) , Microgel , Emulsion polymerization

Afyon Kocatepe University Journal Of Science an‎d Engineering

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Afyon Kocatepe University Journal Of Science an‎d Engineering