Influence of the Molecular Mass of Poly(N-vinylpyrrolidone) on Formation of Cu2O Nanoparticles During Reduction of Divalent Copper Ions with tert-Butylamine Borane in Polymer Solution

• Published in: Polymer science. Series B Vol. 60; no. 4; pp. 455 - 463
• Main Authors: Ostaeva, G. Yu, Isaeva, I. Yu, Grushina, V. V., Stuzhuk, A. N., Odinokova, I. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.07.2018; Springer Nature B.V
• Subjects: Chemistry; Chemistry and Materials Science; Copper; Copper oxides; Dilution; Macromolecules; Nanoparticles; Particle size distribution; Polymer Sciences; Polymers; Reduction; Synthesis
• ISSN: 1560-0904; 1555-6123
• DOI: 10.1134/S1560090418040085

The process of reduction of divalent copper ions with tert -butylamine borane in dilute aqueous solutions of poly( N -vinylpyrrolidone) is investigated. The influence of polymer molecular mass on properties of the resultant Cu 2 O sols is studied. It is shown that Cu 2 O nanoparticles with an average diameter of 6–8 nm independent of polymer molecular mass and a relatively narrow size distribution of particles are formed in the systems under study. The contour length of macromolecules and the hydrodynamic diameter of a poly( N -vinylpyrrolidone) macromolecular coil are compared with the diameter of Cu 2 O particles. Poly( N -vinylpyrrolidone) with M ≥ 1 × 10 4 can be used to produce Cu 2 O nanoparticles. Poly( N -vinylpyrrolidone) with M > 4 × 10 4 should be used for the formation of long-living Cu 2 O sols.