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發(fā)布時(shí)間：2021-08-19

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文獻(xiàn)名：Synthesis of Narrowly Dispersed Block Copolymer of Butyl Acrylate and Acrylic Acid in a Solution Acquiring Colloidal Properties during Cooling

 

 

作者： N. Yu. Shushunova^a, B. B. Troitskii^a, S. A. Chesnokov^a, T. A. Kovylina^a, and A. N. Konev^a

Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, Nizhny Novgorod, 603950 Russia

 

 

摘要：The homophase polymerization of acrylic acid is carried out in a solution of poly(butyl acrylate) trithiocarbonate (PBATC) in a mixed solvent 2-propanol–water. The phase diagram of the three-component PBATC-2-propanol–water system at 22°C is obtained. The homophase region of the compositions of semidilute solutions is determined. The homophase polymerization of AA in the three-component system at 70°C, in which the mixed solvent with respect to PBATC is similar in thermodynamic quality to the θ-solvent at 22°, yields solutions of the narrowly dispersed block copolymer butyl acrylate–acrylic acid. The content of the block copolymer in solutions is 15–23%, the MW of the copolymer is 10–20 × 10³, and the polydispersity coefficient is 1.12–1.16. As evidenced by dynamic light scattering, under normal conditions, the solutions contain nanoparticles with a diameter of up to 50 nm with a narrow size distribution.

 

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