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Amphiphilic acrylamide block copolymer: RAFT block copolymerization and monolayer behaviour

机译：两亲丙烯酰胺嵌段共聚物：RAFT嵌段共聚和单层行为

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RAFT polymerization of acrylamide monomers with long alkyl sidechains was studied for application to block copolymer synthesis and nanoscale assembly using the Langmuir–Blodgett technique. Controlled radical polymerization was demonstrated by optimizing the chain transfer agent (CTA) concentration: amphiphilic acrylamide block copolymer, poly(N-dodecylacrylamide)-block-poly(N-tert-pentylacrylamide) (pDDA-b-ptPA) was obtained with high molecular weight (1.3 × 104) and narrow molecular distribution (Mw/Mn = 1.4). The diblock copolymer formed a stable monolayer at the air–water interface under a surface pressure of 30 mN m?1, but the presence of the junction between pDDA and ptPA affected the monolayer mechanical properties at higher surface pressures. Results provide insight into the two-dimensional self-assembly of amphiphilic block copolymers consisting of molecular-level amphiphilic block components.
机译：研究了使用Langmuir-Blodgett技术将具有长烷基侧链的丙烯酰胺单体的RAFT聚合用于嵌段共聚物的合成和纳米级组装。通过优化链转移剂（CTA）浓度证明了可控自由基聚合：两亲丙烯酰胺嵌段共聚物，聚（em> N -十二烷基丙烯酰胺）-嵌段-聚（ N获得了高分子量（1.3×10 4 < / sup> ）和窄分子分布（ M w / M n = 1.4）。在30 mN m ？1 的表面压力下，二嵌段共聚物在空气-水界面处形成了稳定的单层，但pDDA和p t PA在较高的表面压力下影响了单层机械性能。结果提供了对由分子水平两亲嵌段组分组成的两亲嵌段共聚物的二维自组装的了解。

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