| Effect of Acetic Acid Prehydrolysis on Unbleached Bamboo Pulp Production |
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| Author Name | Affiliation | | YangYang Peng | State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640, China | | ChenYin Chen | State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640, China | | Ying Wang | State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640, China | | ShiYu Fu* | State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640, China |
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| Fund Project:The authors are grateful for financial support from the National Natural Science Foundation of China (31570569). |
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| Abstract:Bamboo was used as raw material for unbleached pulp production. An acetic acid prehydrolysis process was employed before the pulping process. The effect of acetic acid prehydrolysis on pulp properties was investigated. The results showed that some components, such as hemicellulose and extractives, were degraded or dissolved in the prehydrolysis process prior to kraft pulping. SEM images of the substrate after treatment indicated that the parenchyma cell wall was thinner, and the size of pores between fiber bundle cell walls was larger. The pulping results showed that acetic acid prehydrolysis could improve the pulp quality and make the pulp easier to bleach. The brightness of the pulp reached 59.6%ISO with a single oxygen delignification step. The acetic acid prehydrolysis decreased pulp viscosity and fiber length, but not significantly. The amount of parenchyma cells in the pulp was reduced, which was beneficial for papermaking and improving mechanical strength of paper. This procedure has good potential for unbleached pulp production. |
| keywords:acetic acid prehydrolysis bamboo unbleached pulp kraft pulping |
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