Study of aqueous polyacrylamide solutions with concentrations

IF 2.8 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Applied Physics A Pub Date : 2024-09-12 DOI:10.1007/s00339-024-07890-0

Subrata Mahata, Mojammel H. Mondal

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Abstract

The detailed systematic study of aqueous polyacrylamide solutions at different concentrations and different molar concentrations of NaCl solutions along with the dependency at scattering angles 175^o and 90^o has been performed rigorously using the Dynamic Light Scattering method. Aqueous polymer solutions of different concentrations of polymer as well as at different molar concentrations of NaCl solutions were prepared for the study. Analyses of the correlation functions show the presence of three concentration regions consisting each with the presence of fast and slow modes. Out of three, the one (unentangled semidilute) concentration regime shows the unique morphology of polymer solutions irrespective of the change in polymer concentrations and with the change in NaCl concentrations. Furthermore, the angular dependency results show the presence of amount of heterogeneity of polymer chains in the solutions which quantified from the overall change of stretching parameter of slow mode β (Dilute and entangled region ~ 20%, Unentangled region ~ 7%).

Graphical Abstract

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聚丙烯酰胺水溶液浓度研究

使用动态光散射法对不同浓度和不同摩尔浓度的 NaCl 溶液的聚丙烯酰胺水溶液以及散射角 175o 和 90o 的依赖性进行了详细的系统研究。研究中制备了不同浓度的聚合物水溶液和不同摩尔浓度的氯化钠溶液。对相关函数的分析表明，存在三个浓度区域，每个区域都有快速和慢速模式。在三个浓度区中，一个浓度区（无缠结半稀释）显示出聚合物溶液的独特形态，无论聚合物浓度如何变化，也无论氯化钠浓度如何变化。此外，角度依赖性结果表明，溶液中存在一定量的聚合物链异质性，这可从慢速模式 β 拉伸参数的总体变化中量化（稀释和纠缠区 ~ 20%，非纠缠区 ~ 7%）。

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来源期刊

Applied Physics A 工程技术-材料科学：综合

CiteScore

4.80

自引率

7.40%

发文量

964

审稿时长

38 days

期刊介绍： Applied Physics A publishes experimental and theoretical investigations in applied physics as regular articles, rapid communications, and invited papers. The distinguished 30-member Board of Editors reflects the interdisciplinary approach of the journal and ensures the highest quality of peer review.