PS-b-PMMA 二嵌共聚物在 PS/PMMA 基 THF-in-THF 乳液中的稳定效果

IF 3.7 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Langmuir Pub Date : 2024-09-21 DOI:10.1021/acs.langmuir.4c02854

Hyun Jung Lee, Frédéric Renou, Taco Nicolai, Lazhar Benyahia

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引用次数: 0

摘要

我们研究了四氢呋喃中聚苯乙烯（PS）和聚甲基丙烯酸甲酯（PMMA）溶液在 PS-b-PMMA 二嵌段共聚物存在下的普通溶剂型乳液。在不同的相体积分数、浓度和共聚物成分条件下，通过目测和共聚焦激光扫描显微镜测定了二元共聚物的稳定效果。采用静态和动态光散射法研究了每种均聚物溶液中 PS-b-PMMA 的行为。共聚物在均聚物临界浓度以上形成胶束。光散射测量结果表明，添加到胶束溶液中的少量其他均聚物会自发地进入胶束，这表明所观察到的乳液稳定性是由覆盖在分散液滴表面的二嵌段共聚物层形成的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Stabilizing Effect of PS-b-PMMA Diblock Copolymers in PS/PMMA-Based THF-in-THF Emulsions

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Stabilizing Effect of PS-b-PMMA Diblock Copolymers in PS/PMMA-Based THF-in-THF Emulsions

We have investigated the common solvent-based emulsion composed of polystyrene (PS) and poly(methyl methacrylate) (PMMA) solutions in tetrahydrofuran in the presence of PS-b-PMMA diblock copolymers. The stabilization effect of the diblock was determined visually and by confocal laser scanning microscopy at various phase volume fractions, concentrations, and compositions of the copolymer. The behavior of PS-b-PMMA in each homopolymer solution was studied with static and dynamic light scattering. The copolymer formed micelles above a critical homopolymer concentration. Light scattering measurements showed that small amounts of the other homopolymer added to the micelle solution entered the micelles spontaneously, suggesting that the observed emulsion stability is caused by the diblock copolymer laminar layer formation covering the surface of the dispersed droplets.

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来源期刊

Langmuir 化学-材料科学：综合

CiteScore

6.50

自引率

10.30%

发文量

1464

审稿时长

2.1 months

期刊介绍： Langmuir is an interdisciplinary journal publishing articles in the following subject categories: Colloids: surfactants and self-assembly, dispersions, emulsions, foams Interfaces: adsorption, reactions, films, forces Biological Interfaces: biocolloids, biomolecular and biomimetic materials Materials: nano- and mesostructured materials, polymers, gels, liquid crystals Electrochemistry: interfacial charge transfer, charge transport, electrocatalysis, electrokinetic phenomena, bioelectrochemistry Devices and Applications: sensors, fluidics, patterning, catalysis, photonic crystals However, when high-impact, original work is submitted that does not fit within the above categories, decisions to accept or decline such papers will be based on one criteria: What Would Irving Do? Langmuir ranks #2 in citations out of 136 journals in the category of Physical Chemistry with 113,157 total citations. The journal received an Impact Factor of 4.384*. This journal is also indexed in the categories of Materials Science (ranked #1) and Multidisciplinary Chemistry (ranked #5).