了解聚合物胶体凝胶：利用低场核磁共振的溶剂视角。

IF 2.9 3区化学 Q3 CHEMISTRY, PHYSICAL

Soft Matter Pub Date : 2024-11-13 DOI:10.1039/d4sm01098a

Léo Hervéou, Gauthier Legrand, Thibaut Divoux, Guilhem P Baeza

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引用次数: 0

摘要

本研究强调了低场核磁共振弛豫测定法在研究胶体聚合物水凝胶方面的相关性，在 10 °C 至 80 °C 之间的各种配方中探测水动力学。通过研究横向弛豫时间 T2 的温度依赖性，我们证明了 NMR 响应与水凝胶流变行为之间的明确联系。特别是，我们发现以溶剂为目标的 NMR 驰豫测量法能可靠地深入了解水凝胶的微观结构，并能检测相变和老化过程。我们的研究结果表明，这种以溶剂为重点的技术可以极大地造福于软物质界，补充凝胶研究中的其他实验方法。

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Understanding polymer-colloid gels: a solvent perspective using low-field NMR.

The present work emphasizes the relevance of low-field NMR relaxometry to investigate colloid-polymer hydrogels by probing water dynamics across a wide range of formulations between 10 °C and 80 °C. By examining the temperature dependence of the transverse relaxation time T₂, we demonstrate a clear link between the NMR response and the rheological behavior of the hydrogels. In particular, we show that NMR relaxometry targeting the solvent provides reliable insights into the hydrogel microstructure and allows the detection of phase transitions and aging processes. Our findings suggest that this solvent-focused technique could greatly benefit the soft matter community, complementing other experimental methods in the study of gels.

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来源期刊

Soft Matter 工程技术-材料科学：综合

CiteScore

6.00

自引率

5.90%

发文量

891

审稿时长

1.9 months

期刊介绍： Where physics meets chemistry meets biology for fundamental soft matter research.