Abstract
Cotton fabric was bleached at a pilot-plant scale with the activated peroxide system based on N-[4-(triethylammoniomethyl) benzoyl] caprolactam chloride (TBCC). The performance of the TBCC-activated peroxide system on low-temperature bleaching of cotton fabric was evaluated by measuring the degree of whiteness, degree of polymerization, water absorbency, extractable contents, and dyeing properties of bleached cotton fabrics. For comparison purpose, cotton fabric was also bleached at the same pilot-plant scale with a traditional hydrogen peroxide system using a standard recipe. It was found that the pilot-plant bleaching with the TBCC-activated peroxide system resulted in a comparable degree of whiteness and a slightly lower water absorbency of cotton fabric but no apparent fiber damage. The bleached cotton fabric could meet requirements for trichromatic reactive dyeing. The investigation on resource utilization revealed that the pilot-plant bleaching of cotton fabric with the TBCC-activated peroxide system could save 60% water, 38% steam and 27% electric power in comparison with the traditional hydrogen peroxide system. These pilot-plant results are of great importance for further scaling up the TBCC-activated peroxide system to full-scale commercial production.
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Acknowledgments
The work was supported by the National Natural Science Foundation of China (Grant No. 21276106), the Major Research and Development Program of Jiangsu Province (Grant No. BE201596), and the Prospective Joint Research Project of Jiangsu Province (Grant No. BY2015019-09). We also greatly appreciate Cotton Incorporate for providing the pilot-plant bleaching and dyeing equipment.
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Yu, J., Shao, D., Sun, C. et al. Pilot-plant investigation on low-temperature bleaching of cotton fabric with TBCC-activated peroxide system. Cellulose 24, 2647–2655 (2017). https://doi.org/10.1007/s10570-017-1276-z
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DOI: https://doi.org/10.1007/s10570-017-1276-z