四种竹材制浆性能及其在过滤基材中的应用研究

Research on the Pulping Performance of Four Bamboo Materials and Their Application in Filter Substrates

关键词:  竹浆纤维  空气过滤基材  透气度

Key Words:bamboo pulp fiber  air filtration substrates  air permeability

摘要:本研究以细叶龙竹、大叶龙竹、吊丝竹和甜竹4种3年生竹材为研究对象，对其微观结构、纤维形态、化学组分、纸浆及纸张性能进行了表征，以评估其在过滤基材中的应用潜力。结果表明，4种竹材平均纤维长度均在2 mm以上；综纤维素、木质素和灰分含量分别为65%~73%、18%~26%和1%~3%；经硫酸盐蒸煮的纸浆细浆得率为30%~41%。竹浆滤材与针叶木闪急干燥浆滤材相比，竹浆滤材具有更高的松厚度和挺度，基于纸张松厚度、孔径、透气度、过滤效率、过滤阻力及品质因子评价，甜竹浆滤材过滤性能较好，品质因子达5.66，优于针叶木闪急干燥商品浆滤材。

Abstract:This study focused on the characterization of four three-year-old bamboo species， namely dendrocalamus gracilis， dendrocalamus macrophylla， dendrocalamus minor， and indosasa angustata， respectively. The micro structure， fiber morphology， chemical composition， pulp， and paper properties of these bamboo species were evaluated to assess their potential application as filter materials. The results showed that four bamboo species had an average fiber length exceeding 2 mm. The content of holocellulose， lignin， and ash were 65%~73%， 18%~26%， and 1%~3%， respectively. The yield of fine pulp obtained through sulfite cooking was 30%~41%. Compared with commercial softwood kraft pulp filter materials， bamboo pulp filter materials exhibited higher bulk and stiffness. Based on evaluations of paper bulk， pore size， air permeability， filtration efficiency， filtration resistance， and quality factors， the filter performance of indosasa angustata was found to be favorable， with a quality factor of 5.66， surpassing the commercial softwood kraft pulp sample.