马尾松深度预水解硫酸盐法制浆性能研究

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关键词：预水解硫酸盐法；马尾松；半纤维素；木质素；溶解浆中图分类号：TS74 文献标识码：A DOI： 10.11980/j.issn.0254-508X.2025.09.010

;tudy of the Pulping Performance of Masson Pine Based on the Deeply Pre-hydrolysis Kraft Method

LUO Xiyao1ZHENG Xiaobin1ZHANG Haoyun1YANG Jiawei1HUANG Liulian1

CHEN Lihui1LU Hongliang2，* CHENG Dong³LI Jianguo1，* （1.ColegeftealsEgeingtioalFestry&GassnddmistratoKyafltFibeuctioalaterasuj AgriculurUeitl Province，36o;3.GuangdongGunhaoNeMaterialResearch&DevelopmentCo，Ld.，GuangzhoGuangdongProvince，1458） （*E-mail：deardeer@126.com； jianguolicn@fafu. edu.cn）

Abstract：Usingmaonpinasawmaterialeeplyprehydrolysisraftpulpingprocessaseploedtovestigateteftsfpr hydrolysisconditionsonthechemicalcompositionandfibermorphologyof massonpine.Theresultsshowedthatprolongingheprehydrolysis tieadincreasingteprehdrolysstmperaurersultedinextensivedssolutionofemicelloseaddsuptiooferaw materialstructure，butalsoledtoadecreaseinyieldofrawmaterial.Whentheconditions were135minofpre-hydrolysis time， 170‰ of pre-hydrolysis temperature，and liquor-to-wood ratio of 1：4 ，the hemicellulose，cellulose，and lignin contents of masson pine changed from 22.80% ， 46.81% ，and 28.40% to 12.71% ， 49.82% ，and 27.61% ，respectively，the dissolution rate of hemicellulose was （204号 53.3% ，and the yield of pre-hydrolyzed chips was 83.9% . It's that during the pre-hydrolysis process，the dissolution of hemicellulose inducedstructuralchangesinthemasonpinefibers，whichfacilitatedthepenetrationanddifusionofchemicalagentsduringthe cooking process and thus promoted lignin dissolution. When the cooking conditions were 22% of active alkali（NaOH）， 35% of sulfidity，

170‰ of cooking temperature，11O min of cooking time，and liquorto-wood ratio of 1：4.5 ，the fine pulp yield of pre-hydrolysis-kraft pulp in the cooking stage was 47.1% ，withKappanumber of 38.8 and intrinsic viscosity of 796mL/g

Keywords：pre-hydrolysis kraft method；masson pine；hemicellulose; lignin; dissolving pulp

溶解浆是一种高等级的纤维素浆粕，具有半纤维素和木质素含量低、反应性能高的特点，主要用于生产黏胶纤维、纤维素酯和纤维素醚等[1-3]，在食品、日化、制药、军工等多个行业中的应用日益广泛45]。（剩余13601字）