Influence of the RAFT Agent on the Reaction Direction of the Copolymerization of Polypropylene Glycol Maleate with Acrylic Acid

0561241 - ÚACH 2023 RIV KZ eng J - Journal Article
Kazhmuratova, A. T. - Zhunissova, M. - Plocek, Jiří - Fomin, V. N. - Sarsenbekova, A. Zh. - Khamitova, T. O.
Influence of the RAFT Agent on the Reaction Direction of the Copolymerization of Polypropylene Glycol Maleate with Acrylic Acid.
Bulletin of the Karaganda University-Chemistry. Roč. 2022, 107 SI (2022), s. 189-197. ISSN 2518-718X
Institutional support: RVO:61388980
Keywords : unsaturated polyester * polypropylene glycol maleate * acrylic acid * RAFT-polymerization
OECD category: Inorganic and nuclear chemistry
Impact factor: 0.5, year: 2022
Method of publishing: Open access

This work demonstrates the capability of synthesizing new polymers on the basis of unsaturated polyester and acrylic acid in the presence of a chain-transfer agent in a dioxane solution. The initial unsaturated polyester resin was derived from the polycondensation reaction of alcohol and maleic anhydride. The molecular weight of the polypropylene glycol maleate was determined by gel permeation chromatography. The dependence of the structure, network density and product yield on the concentration of the RAFT agent was proven. It was found that the greater the amount of chain-transfer agent in the monomer mixture, the lower the yield of the crosslinked polymer and the greater the yield of the branched copolymer. The composition of the studied co-polymers was determined by FTIR spectroscopy in conjunction with the chemometric method of partial list squares in the R environment. The synthesized objects were characterized by infrared spectroscopy methods and were approximated by Gaussian contours. The results of this study show that the RAFT agent concentra-tion as well as the initial ratio of monomers in the copolymer affect the products yield. The surface topogra-phy of the studied copolymers was recorded by scanning electron microscopy. The molecular chain structure of the branched copolymers was confirmed by NMR spectroscopy.
Permanent Link: https://hdl.handle.net/11104/0337729