The influence of thermodynamic parameters on alkaline activator of geopolymers and structure of geopolymers

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2021-05-11 DOI:10.20450/MJCCE.2021.2127

M. Ivanović, S. Nenadović, V. Pavlović, Ivona R. Radović, M. Kijevčanin, V. Pavlović, Ljiljana M. Kljajević

引用次数: 5

Abstract

In this research, the starting precursor material is metakaolin, which was obtained by calcining domestic kaolinite clay. Thermodynamic parameters: densities, viscosities, speed of sound and refractive index of four series of alkaline activatorswere determined over the temperature range from 15 to 60oC of process of geopolymerization. The samples were characterized by X-ray diffraction (XRD), FTIR and Raman Spectroscopy, Scanning Electron Microscopy (SEM), and Energy-Dispersive X-Ray (EDX) Spectroscopy. Results of FTIR analysis correlated with results of Raman Spectroscopy. Due to the polymerization process the changes in the phonon spectrum is confirmed. The different concentrations of activators do not change notably the Si/Al ratio.

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热力学参数对地质聚合物碱性活化剂及地质聚合物结构的影响

本研究以偏高岭土为原料，通过煅烧国产高岭土获得偏高岭土。在15～60oC的地质聚合温度范围内，测定了四种系列碱性活化剂的热力学参数：密度、粘度、声速和折射率。通过X射线衍射（XRD）、FTIR和拉曼光谱、扫描电子显微镜（SEM）和能量分散X射线（EDX）光谱对样品进行了表征。FTIR分析的结果与拉曼光谱的结果相关。由于聚合过程，声子光谱的变化得到了证实。活化剂的不同浓度不会显著改变Si/Al比。

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

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.