相关实验视频

Updated: Feb 22, 2026

Anionic Polymerization of an Amphiphilic Copolymer for Preparation of Block Copolymer Micelles Stabilized by π-π Stacking Interactions

Anionic Polymerization of an Amphiphilic Copolymer for Preparation of Block Copolymer Micelles Stabilized by π-π Stacking Interactions

Published on: October 10, 2016

在不混合的同聚合物混合物中,多块共聚物的临界微粒度

Cyrus A Watrin¹, Benjamin R Magruder¹, Ashutosh K Nehete¹

¹Department of Chemical Engineering and Material Science, University of Minnesota - Twin Cities, 421 Washington Ave. SE, Minneapolis, Minnesota 55455, United States.

ACS macro letters

|February 21, 2026

概括

多块共聚合物显著降低聚合物混合物中胀的微粒形成的临界微粒度 (CMC). 这种由块数量所影响的效应被兼容器设计的新半实证关系所捕捉到.

科学领域:

聚合物科学聚合物科学
材料化学材料化学
物理化学物理化学

背景情况:

在不混合的A/B同聚合物混合物中,AB块共聚合物的三元混合物形成在关键度 (CMC) 以上的膨胀.
与双块共聚合物相比,对多块共聚合物中菌形成的理解较少.

研究的目的:

在多块共聚合物/同聚合物混合物中,使用自相一致的场理论 (SCFT) 调查膨胀的小粒细胞的临界小粒细胞度 (CMC).
开发多块共聚合物的CMC的预测模型,并探索界面张力.
为了建立多块兼容器的热力学极限.

主要方法:

使用自相一致的场理论 (SCFT) 计算来模拟聚合物混合物的行为.
对不同数量的块的临界菌度 (CMC) 的分析.
基于莱布勒的双块共聚物理论的半经验关系的发展.
交界吸附的SCFT计算.

主要成果:

在多块共聚合物中增加块数量会大大减少CMC.
由于桥梁形成,在CMC中观察到一个非微不足道的偶数/奇数效应.
开发了一种半经验关系,可以准确预测多块共聚合物的CMC.
预测了最小的界面张力,为兼容剂的使用设定了热力学极限.

结论:

与双块系统相比,多块共聚合物提供了显著较低的CMC,提高了微粒形成的效率.
开发的半实证模型为预测和设计多块共聚合物兼容器提供了有价值的工具.
这些发现为在兼容化中应用多块共聚合物确定了关键的热力学参数.

更多相关视频

Preparation and Characterization of Individual and Multi-drug Loaded Physically Entrapped Polymeric Micelles

Preparation and Characterization of Individual and Multi-drug Loaded Physically Entrapped Polymeric Micelles

Published on: August 28, 2015

Assembly and Characterization of Polyelectrolyte Complex Micelles

Assembly and Characterization of Polyelectrolyte Complex Micelles

Published on: March 2, 2020

相关概念视频

Characteristics and Nomenclature of Copolymers

Characteristics and Nomenclature of Copolymers

Copolymers are the products obtained from the polymerization of multiple monomer species. So, in a polymer chain itself, there can be multiple repeating units that come from different monomers. The process of synthesizing a polymer from different monomer species is called copolymerization. When two monomers are involved, the polymer is known as a bipolymer. Polymers with three and four monomers are termed terpolymers and quaterpolymers, respectively. Figure 1 depicts the copolymerization of...

Comparing Intermolecular Forces: Melting Point, Boiling Point, and Miscibility

Comparing Intermolecular Forces: Melting Point, Boiling Point, and Miscibility

Intermolecular forces are attractive forces that exist between molecules. They dictate several bulk properties, such as melting points, boiling points, and solubilities (miscibilities) of substances. Molar mass, molecular shape, and polarity affect the strength of different intermolecular forces, which influence the magnitude of physical properties across a family of molecules.
Temporary attractive forces like dispersion are present in all molecules, whether they are polar or nonpolar. They...

Colloids

Colloids

Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...