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通过基液晶凝中的疏水相互作用来定制质性质

S Sumana¹, Pratyasha Chakrabortty¹, Subash Cherumannil Karumuthil^1,2

¹Centre for Nano and Soft Matter Sciences, Bangalore, 562162, India.

Chemphyschem : a European journal of chemical physics and physical chemistry

|September 21, 2025

概括

研究人员修改了纳米颗粒 (SiNP),以创建含有液晶 (LC) 的疏水凝. 连接体长度通过结合相互作用影响了凝强度,改善了对SiNP表面化学效应的理解.

科学领域:

材料科学材料科学材料科学
软物质物理学软物质物理学
合体化学合体化学

背景情况:

纳米粒子 (SiNP) 由于醇组,通常具有水友性.
修改SiNP表面化学对于液晶 (LC) 复合材料等应用至关重要.
之前的工作往往倾向于蒸发的SiNP而不是沉的SiNP.

研究的目的:

为了研究液晶的凝使用改性沉的二氧化纳米粒子.
探索不同链长度对纳米粒子表面的影响.
了解纳米粒子表面化学和产生的凝粘弹性质之间的关系.

主要方法:

沉的二氧化纳米颗粒的合成,具有不同的表面修饰 (甲基,丁基,十二链).
合体凝系统的制备,其成分是体液晶中的改性SiNP.
风湿学测量 (稳定状态和振荡) 以表征粘弹性行为.
使用软玻璃和修改的分数粘弹性模型 (凯尔文-沃伊特,麦克斯韦尔) 进行分析.

主要成果:

成功形成的体凝系统使用沉SiNP在阴性LCs.
证明SiNP表面的带长度显著影响凝网络强度.
展示了修改后的分数模型在描述这些阴性凝的粘性弹性方面的有效性.
阐明了范德瓦尔斯的相互作用,键和疏水性相互作用在决定凝性质的作用.

结论:

沉的二氧化纳米颗粒的表面修饰使其能够形成强大的液晶凝.
疏水性联体的长度是控制凝网络强度的关键因素.
开发的凝系统表现出复杂的粘弹性行为,由先进的分数模型描述得很好,为软物质相互作用提供了洞察力.

关键词:

分数粘弹性模型的分数粘弹性模型.它是疏水的,是水的.一个有敌意的敌人 (nematic nematic).风湿学研究风湿学研究纳米颗粒的二氧化.

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