|
|
| Chemical Composition Analysis of Tobacco Stems and Research on Their Pulping and Papermaking Properties |
| 投稿时间：2024-02-24 修订日期：2024-03-30 |
| DOI： |
| Key Words:tobacco stem raw material, chemical composition, pulping, fiber morphology, physical properties |
| Fund Project:福建省引导性项目（2023H0008） |
|
| 摘要点击次数: 41 |
| 全文下载次数: 0 |
| Abstract:To enhance the utilization efficiency and added value of tobacco stem raw materials, this study prepared tobacco stem pulp fibers through hydrothermal pretreatment and mechanical pulping, and preliminarily produced paper by blending with bleached sulfate broadleaf wood pulp. Tobacco stalk raw materials have 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 to produce mechanical pulp fibers. This research investigates the effects of hydrothermal pretreatment conditions, H2O2 bleaching process parameters, and blending conditions on the properties of tobacco stem fibers and paper. Under the conditions of hydrothermal pretreatment at 80 °C for 90 minutes and bleaching with 3% H2O2 for 60 minutes, tobacco stem pulp fibers with a length of 0.395 mm, width of 32.3 μm, twist angle of 98°, curl index of 15.3%, and coarseness of 0.989 mg?m-1 were obtained. By using the prepared tobacco stem fibers blended with hardwood pulp in a ratio of 3:7, paper with a bulk thickness of 1.68 cm3?g-1, a brightness of 62.1% ISO, opacity of 94.6%, tear index of 5.92 mN?m2?g-1, and tensile index of 33.80 N?m?g-1 was produced, showing potential for application in the manufacturing of cigarette paper products based on tobacco stem materials. |
| HTML 查看/发表评论 下载PDF阅读器 |
|
|
|