Determination of monomer reactivity ratios in acrylic acid /polyethylene glycol methyl ether methacrylate copolymer

Polyethylene glycol (PEG) macromers and acrylic acid is one of the most important water soluble monomers that have many applications in different science and technologies [1, 2]. Thereare several methods to estimates of monomer reactivity ratios in literatures. Mau and Huglin purposed a generalclassification for these methods. They classified these methods to two general groups: Linear least squares methods (LLS)and non-linear least squares methods (NLLS) [3]. In this work, different linear techniques are utilized to obtain point estimates of these reactivity ratios including Fineman–Ross (FR), Inverted Fineman-Ross (IFR) and Kelen–Tüdös (KT) [4, 5].