竹材深度預(yù)水解-硫酸鹽法制備溶解漿工藝的探究

打開文本圖片集

作者簡(jiǎn)介：，在讀碩士研究生；研究方向：制漿造紙。

關(guān)鍵詞：預(yù)水解-硫酸鹽法制漿；竹材；半纖維素；木質(zhì)素；纖維素中圖分類號(hào)：TS74 文獻(xiàn)標(biāo)識(shí)碼：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，F(xiàn)uzhou，F(xiàn)ujianProvince，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號(hào) 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

溶解漿是一種高純度的化學(xué)漿，具有高 α -纖維素含量（ 9 0 %～9 9 % ）、低半纖維素含量（ 1 % ～ 5 % ）、高反應(yīng)性能的特點(diǎn)[1-3]。（剩余11048字）