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Abstract
Colloid-chemical properties of polymeric complexes based on polyacrylic acid, polymethacrylic acid, and copolymer of methacrylic acid and pinene with polyacrylamide in diluted aqueous solutions have been investigated. The synthesis of the copolymer of methacrylic acid and pinene, which is more hydrophobic than polyacrylic and polymethacrylic acids, is described. With the addition of polyacrylamide, macromolecules of polycarboxylic acids in aqueous solutions interact by means of hydrogen bonds between carboxylic and amide groups. Intermolecular interactions depend on conformational mobility of linear parts of the macromolecular chains and determine the complexation ability. The effect of the hydrophobicity of the initial polymers and their ratio on the properties (viscosity, pH and surface tension) of the polymeric complexes is discussed. The stability of the complexes formed depends on the presence and quantity of hydrophobic groups in the macromolecules of the polyacids.