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| Study on Pulp Properties of Different Pulping Methods of Hemp Bast Fiber |
| Received:January 09, 2023 |
| DOI：10.11980/j.issn.0254-508X.2023.07.006 |
| Key Words:industrial hemp bast fiber pulping beating paper performance |
| Fund Project:华南理工大学造纸与污染控制国家工程研究中心自主创新研究基金（2020ZY01）。 |
| Author Name | Affiliation | Postcode | | SHEN Huiying | National Engineering Research Center for Papermaking and Pollution Control, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 | | LEI Yichao* | National Engineering Research Center for Papermaking and Pollution Control, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 | | CHEN Lingchen | National Engineering Research Center for Papermaking and Pollution Control, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 |
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| Abstract:In this paper， the bast fiber of industrial hemp was used as raw material. The chemical composition and fiber morphology were analyzed. The results showed that the industrial hemp fiber had a high content of nitrate-ethanol cellulose， reaching 70.6%， while the lignin content was relatively low， only 9.6%. The average length of the fiber was 20.47 mm， the average width of the fiber was 22.50 μm， and the length and width ratio was 909.78， which was a high quality raw material for paper making. Then three different methods of soda-anthraquinone （NaOH-AQ）， sulfate（KP） and alkaline subsodium-anthraquinone （AS-AQ） were used to prepare the pulp. Compared with commercial pulp， AS-AQ pulp had obvious advantages over NaOH-AQ pulp and KP pulp in terms of pulp yield， brightness， intrinsic viscosity and paper physical strength performance. So that AS-AQ was an ideal method for hemp bast fiber. |
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