当前位置：
X-MOL 学术
›
Polym. Chem.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Exploration of the modification-induced self-assembly (MISA) technique and the preparation of nano-objects with a functional poly(acrylic acid) core
Polymer Chemistry ( IF 4.1 ) Pub Date : 2022-06-22 , DOI: 10.1039/d2py00666a Peng Zhou 1 , Boyang Shi 1 , Yuang Liu 1 , Penghan Li 1 , Guowei Wang 1
Polymer Chemistry ( IF 4.1 ) Pub Date : 2022-06-22 , DOI: 10.1039/d2py00666a Peng Zhou 1 , Boyang Shi 1 , Yuang Liu 1 , Penghan Li 1 , Guowei Wang 1
Affiliation
|
The hydrolysis-based post-polymerization modification method was introduced into the self-assembly process and a modification-induced self-assembly (MISA) technique was presented. The diblock copolymer poly(styrene)-b-poly(tert-acrylate) (PS-b-PtBA) was employed as a precursor, trifluoroacetic acid (TFA) was used as a modifying agent, and toluene was used as the solvent. With the gradual hydrolysis of the PtBA block, the generated poly(acrylic acid) (PAA) block showed reduced solubility in toluene and induced an in situ self-assembly process. By modulating the degree of polymerization of the PtBA block (DPPtBA), weight solids content (up to 15.0% w/w), the morphological evolution of the MISA process was investigated, and a series of spherical, worm-like and vesicular nano-objects were obtained. By modulating the topology of copolymers, such as the triblock copolymers PS-b-PtBA-b-PS and PtBA-b-PS-b-PtBA and star-shaped copolymers Star-(PtBA-b-PS)4 and Star-(PS-b-PtBA)4, it was observed that the topology also played an important role in the self-assembly behavior. As an alternative route to self-assembly, the MISA technique comprehensively combined the merits of the conventional self-assembly and the recently developed polymerization-induced self-assembly (PISA) techniques.
中文翻译：
改性诱导自组装（MISA）技术的探索与功能性聚丙烯酸核纳米材料的制备
将基于水解的聚合后改性方法引入自组装过程中，提出了一种改性诱导自组装（MISA）技术。以二嵌段共聚物聚（苯乙烯）-b-聚（叔丙烯酸酯）（PS- b - P t BA）为前驱体，三氟乙酸（TFA）为改性剂，甲苯为溶剂. 随着 P t BA 嵌段的逐渐水解，生成的聚（丙烯酸）（PAA）嵌段在甲苯中的溶解度降低并诱导原位自组装过程。通过调节 P t BA 嵌段的聚合度(DP P t BA)、重量固含量（最高 15.0% w/w），研究了 MISA 过程的形态演变，并获得了一系列球形、蠕虫状和水泡状纳米物体。通过调节共聚物的拓扑结构，例如三嵌段共聚物 PS- b -P t BA- b -PS 和 P t BA- b -PS- b -P t BA 和星形共聚物 Star-(P t BA- b -PS) 4和星-(PS- b -P t BA) 4，观察到拓扑在自组装行为中也发挥了重要作用。作为自组装的替代途径，MISA 技术综合结合了传统自组装和最近开发的聚合诱导自组装 (PISA) 技术的优点。
更新日期：2022-06-22
中文翻译：
改性诱导自组装（MISA）技术的探索与功能性聚丙烯酸核纳米材料的制备
将基于水解的聚合后改性方法引入自组装过程中，提出了一种改性诱导自组装（MISA）技术。以二嵌段共聚物聚（苯乙烯）-b-聚（叔丙烯酸酯）（PS- b - P t BA）为前驱体，三氟乙酸（TFA）为改性剂，甲苯为溶剂. 随着 P t BA 嵌段的逐渐水解，生成的聚（丙烯酸）（PAA）嵌段在甲苯中的溶解度降低并诱导原位自组装过程。通过调节 P t BA 嵌段的聚合度(DP P t BA)、重量固含量（最高 15.0% w/w），研究了 MISA 过程的形态演变，并获得了一系列球形、蠕虫状和水泡状纳米物体。通过调节共聚物的拓扑结构，例如三嵌段共聚物 PS- b -P t BA- b -PS 和 P t BA- b -PS- b -P t BA 和星形共聚物 Star-(P t BA- b -PS) 4和星-(PS- b -P t BA) 4，观察到拓扑在自组装行为中也发挥了重要作用。作为自组装的替代途径，MISA 技术综合结合了传统自组装和最近开发的聚合诱导自组装 (PISA) 技术的优点。
京公网安备 11010802027423号