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| Modification of Hemicellulose Isolated from Waste Liquor of Reed Prehydrolysis and Its Application |
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| DOI：10.11981/j.issn.1000-6842.2013.03.33 |
| Key Words:hemicellulose; cationic; degree of substitution; modification |
| Fund Project:江苏省制浆造纸科学与技术重点实验室开放基金资助项目（201003）。 |
| Author Name | Affiliation | | 樊婷婷1,2 | 1.大连工业大学,辽宁大连,116034；2.南京林业大学江苏省制浆造纸科学与技术重点实验室,江苏南京,210037 | | 韩 颖1,2,* | 1.大连工业大学,辽宁大连,116034；2.南京林业大学江苏省制浆造纸科学与技术重点实验室,江苏南京,210037 | | 孙广卫1,2 | 1.大连工业大学,辽宁大连,116034；2.南京林业大学江苏省制浆造纸科学与技术重点实验室,江苏南京,210037 | | 李海明1,2 | 1.大连工业大学,辽宁大连,116034；2.南京林业大学江苏省制浆造纸科学与技术重点实验室,江苏南京,210037 |
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| Abstract: |
| The hemicellulose isolated from waste liquor of reed prehydrolysis was used as raw material to prepare cationic hemicelluloses with different degree of substitution by etherification. Effects of dosages of etherification agent and catalyst NaOH, reaction time and temperature on the degree of substitution were mainly discussed in this paper. The results showed that when the mass ratio of the etherification agent to hemicellulose was 0.8, NaOH to hemicellulose was 0.08, reaction time was 2 h, the temperature was 60℃, the substitution degree of cationic hemicellulose was 0.0217. The IR results of the hemicellulose before and after modification indicated that the structure of modified hemicellulose had cationic groups. It confirmed that the hemicellulose occurred cationization reaction. The strength properties of the handsheet could be improved significantly by adding the modified hemicellulose into the pulp． |
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