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| Fenton Oxidation Treatment of Fiber Surface of Unbleached Kraft Pulp |
| Received:April 16, 2019 |
| DOI：10.11980/j.issn.0254-508X.2019.08.002 |
| Key Words:unbleached kraft pulp Fenton reaction surface oxidation specific beating energy consumption tensile index |
| Fund Project:国家重点研发计划项目资助 2017YFB0307900国家重点研发计划项目资助（编号：2017YFB0307900）。 |
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| Abstract:Carboxymethyl cellulose (CMC) supported Fe2+ catalyst was used to perform Fenton oxidation pretreatment on the surface of unbleached kraft pulp fiber. The adsorption of CMC-Fe2+ composite catalyst on the surface of pulp fiber was determined by modern instrumental analysis methods such as ESEM and UV-vis. By means of fiber morphology analysis, specific beating energy consumption measurement, zero-span tensile strength and tensile index analysis, the influence of Fenton oxidation pretreatment on fiber surface on fiber morphology change during beating, fiber inherent strength change, specific beating energy consumption and paper tensile index were discussed. The results showed that the degree of cellulose polymerization of the pulp fiber treated with Fenton surface oxidation decreased slightly. Under the condition that the fiber morphology and strength were basically not affected, the beating energy consumption of the pulp fiber decreased by 9% when beating at 8000 r and the tensile index increased by 6.9% when the beating energy consumption of beating was 2633 kWh/t compared with that of the untreated pulp fiber. |
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