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Study on Oxidation of Cellulose by Hydrogen Peroxide
  
DOI:10.11980/j.issn.0254-508X.2015.11.004
Key Words:hydrogen peroxide  cellulose  catalyst  DP
Author NameAffiliation
黄小雷1,2 1.中国制浆造纸研究院北京1001022.制浆造纸国家工程实验室北京100102 
刘 文1,2 1.中国制浆造纸研究院北京1001022.制浆造纸国家工程实验室北京100102 
刘群华1,2 1.中国制浆造纸研究院北京1001022.制浆造纸国家工程实验室北京100102 
陈雪峰1,2 1.中国制浆造纸研究院北京1001022.制浆造纸国家工程实验室北京100102 
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Abstract:The oxidized cellulose was prepared by using hydrogen peroxide to treat the pulp, The effects of the pH value, oxidation time, dosages of hydrogen peroxide and catalyst (Fe2+) on the oxidation degradation degree of the cellulose were investigated. The results showed that under the conditions of pulp concentration 1%, pH=3, reaction time 6 h, and dosage of hydrogen peroxide 50% and without adding catalyst, aldehyde group content of the treated pulp was 0.24 mmol/g, carboxyl group was 0.20 mmol/g, and DP=969. The influence of FeSO4·7H2O on oxidation degradation degree was analyzed with fixd the conditions as mentioned above. The results showed that the DP of the pulp decreased obviously to the lowest value(611). The highest content of carboxyl group 0.29 mmol/g was achieved when the doage of FeSO4·7H2O was 0.1%. The highest content of aldehyde group 0.42 mmol/g was achieved when the doage of FeSO4·7H2O was 0.6%.
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