Keywords
lignin,
sulfonat guruh,
polielektrolit,
dispersant,
plastifikator,
How to Cite
Abstract
Ushbu tezisda natriy lignosulfonatning kelib chiqishi, kimyoviy tuzilishining asosiy xususiyatlari, suvli muhitdagi polielektrolit xatti -harakati hamda dispersant, plastifikator va sirt-faol modda sifatidagi amaliy ahamiyati tahlil qilindi. Natriy lignosulfonat ligninning sulfonatlangan hosilasi bo‘lib, tarkibidagi sulfonat, fenol gidroksil va karboksil guruhlari uning suvda eruvchanligi, manfiy zaryadlanishi va mineral hamda uglerodli zarrachalar yuzasiga adsorbsiyalanishiga sabab bo‘ladi. Ilmiy manbalar asosida
molekulyar massa, pH, ion kuchi va dozalash miqdorining dispersiyalash samaradorligiga ta’siri ko‘rsatildi. Qurilish materiallari, ko‘mir -suv suspenziyalari,
References
1. Huang C., Ma J., Zhang W., Huang G., Yong Q. Preparation of Lignosulfonates from Biorefinery Lignins by Sulfomethylation and Their Application as a Water Reducer for Concrete. Polymers. 2018. Vol. 10, No. 8. 841. DOI: 10.3390/polym10080841.
2. Yan M., Yang D., Deng Y., Chen P., Zhou H., Qiu X. Influence of pH on the behavior of lignosulfonate macromolecules in aqueous solution. Colloids and Surfaces A:
Physicochemical and Engineering Aspects. 2010. Vol. 371. P. 50–58. DOI: 10.1016/j.colsurfa.2010.08.062.
3. Yang D., Qiu X., Zhou M., Lou H. Properties of sodium lignosulfonate as dispersant of coal water slurry. Energy Conversion and Management. 2007. Vol. 48. P. 2433–2438. DOI: 10.1016/j.enconman.2007.04.007.
4. Atmajayanti A.T., Hung C.C., Yuen T.Y.P., Shih R.C. Influences of Sodium Lignosulfonate and High-Volume Fly Ash on Setting Time and Hardened State Properties of Engineered Cementitious Composites. Materials. 2021. Vol. 14, No. 17. 4779. DOI: 10.3390/ma14174779.
5. Selvik V.M., Salas-Bringas C. et al. Dispersion Mechanisms of Lignosulfonates in Concentrated TiO2 Suspensions and Pastes: The Effects of Molecular Weight Distributions and Ionic Composition. Polymers. 2026. Vol. 18, No. 2. 270.
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