竹材深度预水解-硫酸盐法制备溶解浆工艺的探究

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作者简介：，在读硕士研究生；研究方向：制浆造纸。

关键词：预水解-硫酸盐法制浆；竹材；半纤维素；木质素；纤维素中图分类号：TS74 文献标识码：A DOI： 10.11980/j.issn.0254-508X.2025.04.013

Study on Deep Prehydrolysis-kraft Pulping Treatment of Bamboo Dissolving Pulp

LIN KairuiGUO XuefangNIU ShengyueHUANG LiulianHU Huichao LI Jianguo CHEN Lihui*

（CollegeofMaterialsEngineering，NationalForestry&GrassandAdminstrationKeyLbforPlantiberFuncionlMateials， FujianAgricultureandForestryUniversity，Fuzhou，FujianProvince，350108） （*E-mail：lihuichen66@126.com）

Abstract：Bamboodsovingpulpwasprepaedfrommosbamboousingteprehdrolysis-kraftpuingtreatent，andteetsofpre drolysistie，cokinghdingtie，ndalkalichargeontedegadatioremovalofemicellosandligninfrombamboowereiestigat edTheresultsshowedtattheprehydrolysisreatmentcouldefectielydisoletheemicelloseinbamboo，ndextendingtepre drolysistimecouldsignifcantlyduetententofmcelloseiambreasetheassoncntrationofoosachadesdto talsugarsintdrolsatendvetthicelloeovalAtsolngmiellecreasd bersofporeinbamboandadethestructurelose，whichasconducivetothedugpenetrationandthedegradationremovalofligninduring the cooking stage. After 16O min of prehydrolysis，the cellulose content of bamboo was 5 7 . 4 % ，the hemicellulose content was 7 . 2 % ， the yield was 6 6 . 8 % ，andthe xylose and total xylo mas concentration of the hydrolysate reached the maximum value，which was 12.9and 2 3 . l g / L ，respectively.Duringthekraftcokingprocess，ncreasingthealkalichargeandextendingthecookingholding timebothcouldenhancetheremovalofligninandhemcelloseinbamboodisolvingpul，thusreducingtheKappavalueandthcontetfpentosanandincreasing the α -cellulose content of bamboo dissolving pulp. Under the conditions of alkali charge of 20 % （based on NaOH），sulfidity of （204号 2 7 % ， liquid ratio of 1：4，cooking temperature of ，and cooking holding time of 9O min，the Kappa value of bamboo dissolving pulp was7.5， the content of pentose was2. 1 % ，the content of α -cellulose was 90. 8 % ，and the viscosity was 7 4 0 m L/ g

Keywords： prehydrolysis-kraft pulping；bamboo；hemicellulose; lignin；cellulose

溶解浆是一种高纯度的化学浆，具有高 α -纤维素含量（ 9 0 %～9 9 % ）、低半纤维素含量（ 1 % ～ 5 % ）、高反应性能的特点[1-3]。（剩余11048字）