Photoelectrorheological properties of polyimides with sulfo-acid and sodium salt sulfo-acid groups: a comparative study

IF 2.8 3区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

The European Physical Journal Plus Pub Date : 2023-08-24 DOI:10.1140/epjp/s13360-023-04383-6

Elena S. Kelbysheva, Alexander N. Danilin, Mariam G. Ezernitskaya, Nikolay A. Semenov

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Abstract

The paper describes a new device that allows us to study the effect of ultraviolet irradiation on the electrorheological characteristics of new photosensitive materials based on colloidal polyimide systems containing SO₃H (PI-I) and SO₃Na (PI-II) groups. The samples were analyzed using rotational viscometry methods, and a significant effect of irradiation of the systems on the flow velocity and hence the viscosity of the medium and the electrorheological response was shown. At the same time, the dimensional and microrheological properties of colloidal polyimide systems in polar and nonpolar media under simultaneous ultraviolet irradiation and exposure to an electric field were monitored using IR spectroscopy and dynamic light scattering methods. The mobility and zeta potential of polyimide molecules were determined using a sensitive method of phase analysis of light scattering. It is shown that in almost all cases, irradiation of colloidal systems of polyimides led to the uncontrolled formation of larger particles, which decreased during the thermal reaction almost to the initial size, which indicates the stability of the studied systems to external influences (irradiation and electric current).

Graphical abstract

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磺酸基和钠盐磺酸基聚酰亚胺的光电流变性能比较研究

本文描述了一种新的装置，使我们能够研究紫外线照射对基于含有SO3H (PI-I)和SO3Na (PI-II)基团的胶体聚酰亚胺体系的新型光敏材料电流变特性的影响。用旋转粘度法对样品进行了分析，结果表明辐照系统对流速、介质粘度和电流变响应有显著影响。同时，利用红外光谱和动态光散射方法监测了极性和非极性介质中胶体聚酰亚胺体系在紫外辐射和电场作用下的尺寸和微流变特性。采用光散射相分析的灵敏方法测定了聚酰亚胺分子的迁移率和zeta电位。结果表明，在几乎所有情况下，聚酰亚胺胶体体系的辐照都会导致不受控制的大颗粒的形成，这些大颗粒在热反应过程中几乎减小到初始尺寸，这表明所研究的体系对外部影响(辐照和电流)具有稳定性。图形抽象

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

The European Physical Journal Plus PHYSICS, MULTIDISCIPLINARY-

CiteScore

5.40

自引率

8.80%

发文量

1150

审稿时长

4-8 weeks

期刊介绍： The aims of this peer-reviewed online journal are to distribute and archive all relevant material required to document, assess, validate and reconstruct in detail the body of knowledge in the physical and related sciences. The scope of EPJ Plus encompasses a broad landscape of fields and disciplines in the physical and related sciences - such as covered by the topical EPJ journals and with the explicit addition of geophysics, astrophysics, general relativity and cosmology, mathematical and quantum physics, classical and fluid mechanics, accelerator and medical physics, as well as physics techniques applied to any other topics, including energy, environment and cultural heritage.