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Cationization of cotton fiber: an integrated view of cationic agents, processes variables, properties, market and future prospects

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Abstract

Anionic dyes are often used for conventional cotton dyeing. This process, however, has a moderate affinity and it is estimated that less than 70% of the dye interacts with the cotton fiber. Cationization of cellulose is a chemical treatment that modifies the cellulose molecule, making it strongly cationic. This pretreatment increases the affinity between cotton and anionic dyes. Therefore, cationic dyeing reduces water, time, energy and chemical consumption. In this scenario, there is a growing demand to develop new cleaner products, as well as to elucidate the reaction mechanism aiming to create a clean and low-cost process for cotton cationization. In the last decades, more than 800 documents were published, and this number continues to rise. Among the cationic agents, 3-chloro-2-hydroxypropyl trimethylammonium chloride is the most researched and has achieved niche markets. However, poly-diallyldimethylammonium chloride combines effectiveness with a cleaner process. These characteristics make this cationic agent promising for future research. This review reports the state of the art on the techniques used for cationization, with a brief description of the market available for cationic cotton and a critical evaluation of the future perspectives for cationization.

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Acknowledgments

The authors are grateful for the financial support from the Brazilian Federal Foundation for Support and Evaluation of Graduate Education (CAPES)—Finance Code 001 and Internationalization Program CAPES-PRINT (Project Number 88887.310560/2018-00).

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Correspondence to Jeferson Correia.

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Correia, J., Rainert, K.T., Oliveira, F.R. et al. Cationization of cotton fiber: an integrated view of cationic agents, processes variables, properties, market and future prospects. Cellulose 27, 8527–8550 (2020). https://doi.org/10.1007/s10570-020-03361-w

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  • DOI: https://doi.org/10.1007/s10570-020-03361-w

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