Distribution of Alternating Sequences in Methyl Methacrylate/ n-Butyl Acrylate Copolymers Prepared by Atom Transfer Radical Polymerization

被引：23

作者：

Sosnowski, Stanislaw ^{[1
]}

Szymanski, Ryszard ^{[1
]}

Lorandi, Francesca ^{[2
]}

Olszewski, Mateusz ^{[2
]}

Sobieski, Julian ^{[2
]}

Yin, Rongguan ^{[2
]}

Bockstaller, Michael R. ^{[3
]}

Matyjaszewski, Krzysztof ^{[2
]}

机构：

[1] Polish Acad Sci, Ctr Mol & Macromol Studies, PL-90363 Lodz, Poland

[2] Carnegie Mellon Univ, Dept Chem, Ctr Macromol Engn, Pittsburgh, PA 15213 USA

[3] Carnegie Mellon Univ, Dept Mat Sci & Engn, Pittsburgh, PA 15213 USA

来源：

MACROMOLECULES | 2021年 / 54卷 / 21期

关键词：

PROPAGATION RATE COEFFICIENTS; GRADIENT COPOLYMERS; BLOCK-COPOLYMERS; TERMINATION; ATRP; SIMULATION; KINETICS; BRUSHES;

D O I：

10.1021/acs.macromol.1c01930

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Copolymers of n-butyl acrylate/methyl methacrylate (BA/MMA) with certain compositions were recently proposed as self-healing materials due to "key-and-lock" interchain interactions of alternating sequences. This inspired us to analyze by numerical simulations the formation of heterosequences in BA/MMA copolymers prepared by atom transfer radical polymerization (ATRP). Stochastic Monte Carlo and deterministic simulations using numerical integration of differential equations showed that the highest contribution of alternating sequences is present in a statistical copolymer with 1:1 BA/MMA composition. However, batch ATRP of a 1:1 BA/MMA mixture generates a gradient copolymer with a diminished fraction of alternating sequences. Therefore, a method for preparing a statistical BA/MMA copolymer with the highest fraction of alternating sequences is proposed through normal ATRP copolymerization with feeding of MMA. The contribution of heterosequences was analyzed for both batch ATRP systems and in the presence of feeding, to identify the conditions that maximize the amount of alternating sequences in the copolymers.

引用

页码：9837 / 9849

页数：13

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