| 林小河.马尾松贮存期对其化学组分及制浆性能的影响研究[J].中国造纸,2025,44(9):88-92 |
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| 马尾松贮存期对其化学组分及制浆性能的影响研究 |
| Study on the Impact of Masson Pine Storage Period on the Chemical Composition and Pulping properties |
| 收稿日期：2025-02-14 修订日期：2025-03-19 |
| DOI：10.11980/j.issn.0254-508X.2025.09.012 |
| 关键词: 溶解浆 贮存期 化学组分 α-纤维素 反应性能 |
| Key Words:dissolving pulp storage period chemical composition α-cellulose reactivity |
| 基金项目:福建省引导性项目（2023H0008）。 |
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| 摘要点击次数: 1832 |
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| 摘要:本研究探讨了不同贮存期马尾松化学组分的变化，并通过预水解、蒸煮和漂白处理，分析贮存期对马尾松得率、黏度、白度、反应性能等指标的影响。结果表明，随着存储时间增加，木片的NaOH抽提物、酸不溶木质素含量逐渐升高（从新鲜木片的16.16%和27.33%增加至存储5个月的17.33%和28.53%），而综纤维素含量和α-纤维素含量则呈降低趋势（从新鲜木片的73.86%和33.89%降低至存储5个月的71.24%和32.04%）。同时，预水解后硫酸盐法制浆所需用碱量（以NaOH计）逐渐增加、未漂浆得率和黏度逐渐下降；经OD0(EP)D1漂白处理，纸浆的白度均提升至90%以上。最终，存储5个月木片的聚合度、α-纤维素含量和反应性能分别为609、91.85%和587.4 s，存储9个月和12个月木片的反应性能偏低，无法检测。 |
| Abstract:This paper studied the change of storage period on the chemical composition and content of Masson pine raw material， and further investigated its effects on the yield， viscosity， brightness and reactivity of Masson pine raw material during the pre-hydrolysis， cooking and bleaching processes. With the increase of storage time， the content of NaOH extractive and acid-insoluble lignin of wood chips gradually increased （from 16.16% and 27.33% of fresh wood to 17.33% and 28.53% of 5-month stored wood）， while the holocellulose content and α-cellulose content showed decreasing trend （from 73.86% and 33.89% of fresh wood to 71.24% and 32.04% of 5-month stored wood）. With the amount of alkali required for kraft pulping after pre-hydrolysis gradually increased， and the yield and viscosity of unbleached pulp gradually decreased. After bleaching treatment （OD0（EP）D1）， the whiteness of pulp was increased to above 90%. The degree of polymerization， the content of α-cellulose and reactivity were 609，91.85% and 587.4 s of 5-month stored wood， while the reactivity of 9-month and 12-month stored wood were too low to be detected. |
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