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Chemical Composition Analysis of Tobacco Stems and Research on Their Pulping and Papermaking Properties
Received:March 30, 2024  
DOI：10.11980/j.issn.0254-508X.2024.07.009
Key Words:tobacco stem raw material  bleached sulfate hardwood pulp  fiber morphology  physical properties
Fund Project:福建省引导性项目（2023H0008）。
Author NameAffiliationPostcode
PAN Pengyu College of Materials Engineering， National Forestry & Grassland Administration Key Lab for Plant Fiber Functional Materials， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350108 350108
SHI Jianzai Fujian Jinmin Reconstituted Tobacco Development Co.， Ltd.， Fuzhou， Fujian Province， 350600 350600
LI Anqi College of Materials Engineering， National Forestry & Grassland Administration Key Lab for Plant Fiber Functional Materials， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350108 350108
CHEN Xin China Tobacoo Fujian Industrial Co.， Ltd.， Xiamen， Fujian Province， 361012 361012
YANG Weikai College of Materials Engineering， National Forestry & Grassland Administration Key Lab for Plant Fiber Functional Materials， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350108 350108
ZHANG Jingnan Fujian Jinmin Reconstituted Tobacco Development Co.， Ltd.， Fuzhou， Fujian Province， 350600 350600
CHEN Lihui College of Materials Engineering， National Forestry & Grassland Administration Key Lab for Plant Fiber Functional Materials， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350108 350108
LI Jianguo* College of Materials Engineering， National Forestry & Grassland Administration Key Lab for Plant Fiber Functional Materials， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350108 350108
ZHANG Guoqiang* China Tobacoo Fujian Industrial Co.， Ltd.， Xiamen， Fujian Province， 361012 361012
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Abstract:This study prepared tobacco stem pulp fibers through hydrothermal pretreatment and mechanical pulping， and preliminarily produced paper by blending with bleached sulfate hardwood pulp. The chemical analysis of tobacco stems showed that the raw materials had relatively low lignin and holocellulose contents （lignin 5%~8%， holocellulose 29%~35%） and high contents of extractives and ash （extractives >50%， ash ~15%）， making them suitable for producing mechanical pulp fibers. This research investigated the effects of hydrothermal pretreatment conditions， H2O2 bleaching process parameters， and blending conditions on the properties of tobacco stem pulp fibers and paper. Under the conditions of hydrothermal pretreatment at 80 ℃ for 90 min and bleaching with H2O2 dogage of 3% for 60 min， tobacco stem pulp fibers with a length of 0.395 mm， width of 32.3 μm， twist angle of 98°， and curl index of 15.3% were obtained. With the mass prepared tobacco stem fibers blended with hardwood pulp in a mass ratio of tobacoo stem pulp and bleached sulfate hardwood pulp was 3∶7， paper with a bulk thickness of 1.68 cm3/g， a brightness of 62.1%， opacity of 94.6%， tear index of 5.92 mN·m2/g， and tensile index of 33.8 N·m/g was produced.
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