烟梗化学组分分析及其制浆与配抄性能研究

Chemical Composition Analysis of Tobacco Stems and Research on Their Pulping and Papermaking Properties

关键词:  烟梗原料，化学组分，制浆，纤维形态，物理性能

Key Words:tobacco stem raw material, chemical composition, pulping, fiber morphology, physical properties

摘要:为了提高烟梗原料的利用效率和附加值，本研究通过水热预处理-机械磨浆方式制备烟梗纸浆纤维，并与漂白硫酸盐阔叶木浆配抄初步制备纸张。烟梗原料木素和综纤维素含量较低（木素为5%~8%、综纤维素为29%~35%）、抽出物和灰分含量较高（抽出物>50%、灰分为~15%），比较适宜制备机械浆纤维。探究水热预处理条件、H2O2漂白工艺参数以及配抄条件对烟梗纤维和纸张性能的影响，在80 °C、90 min的水热预处理和60 min、 3%H2O2用量的漂白条件下，可以制备长度为0.395 mm、宽度为32.3 μm、扭结角为98°、卷曲指数为15.3%的烟梗纸浆纤维；利用制备的烟梗纤维与阔叶木浆在3:7配抄条件下，可以制备松厚度、白度、不透明度、撕裂指数和抗张指数分别为1.68 cm3?g-1、62.1% ISO、94.6%、5.92 mN m2?g-1和33.80 N?m?g-1，有望应用于生产基于烟梗原料的卷烟纸产品。

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.