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Bleaching flax roving with poly(acrylic acid) magnesium salt as oxygen bleaching stabilizer for hydrogen peroxide

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Abstract

Alkali-oxygen one-bath scouring and bleaching process of the flax roving was studied by using a new type of synthesized non-silicon oxygen bleaching stabilizer Poly(acrylic acid) magnesium instead of sodium silicate. Based on the analysis of the effects of single factors such as sodium hydroxide concentration, hydrogen peroxide concentration, temperature, time and the amount of the synthesized non-silicon oxygen bleaching stabilizer poly(acrylic acid) magnesium salt on the performance of the bleached flax roving, including the whiteness, the breaking tenacity, the capillary effect and the weight loss ratio. The optimal process for the application of the stabilizer was determined by orthogonal test, namely, hydrogen peroxide concentration 8.5 g/L, sodium hydroxide concentration 5 g/L, sodium bisulfite 3 g/L, sodium carbonate 3 g/L, the synthesized non-silicon oxygen bleaching stabilizer poly(acrylic acid) magnesium 5.5 g/L, scoured and bleached at 90 °C for 60 min, and the bath ratio was 25:1. Compared with the traditional oxygen bleaching stabilizer sodium silicate, it not only has good ability to inhibit the rapid decomposition of hydrogen peroxide, but also has the advantages of higher whiteness, higher capillary effect, good feel and breaking tenacity, and can effectively solve the "silicon scale" problem and improve the quality of flax products.

Graphic abstract

A novel non-silicon oxygen bleaching stabilizer poly(acrylic acid) magnesium was synthesized and successfully applied to alkali-oxygen one-bath scouring and bleaching process of the flax roving, effectively solving the "silicon scale" problem caused by conventional sodium silicate as stabilizer.

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Abbreviations

PAA-Mg:

Poly(acrylic acid) magnesium

OBS:

Oxygen Bleaching Stabilizer

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Correspondence to Jie Liu.

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Liu, J., Jiang, W., Sun, L. et al. Bleaching flax roving with poly(acrylic acid) magnesium salt as oxygen bleaching stabilizer for hydrogen peroxide. Cellulose 28, 11701–11712 (2021). https://doi.org/10.1007/s10570-021-04262-2

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  • DOI: https://doi.org/10.1007/s10570-021-04262-2

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