木質(zhì)素含量調(diào)控的陽離子化紙漿結(jié)構(gòu)-性能協(xié)同機(jī)制及其抗菌功能強(qiáng)化研究

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作者簡介：王為壯，在讀碩士研究生；研究方向：紙漿陽離子化改性及應(yīng)用。

關(guān)鍵詞：木質(zhì)素；陽離子化；2.3-環(huán)氧丙基三甲基氯化銨；抗菌性能中圖分類號：TS79 文獻(xiàn)標(biāo)識碼：A DOI： 10.11980/j.issn.0254-508X.2025.08.008

Study on Synergistic Mechanism of Structure and Properties of Cationized Pulp Regulated by Lignin Contentand StrengtheningofIts Antibacterial Function

WANG WeizhuangLI Zhiqiang*YAN ChenyangWU Hao LIQun* （State KeyLab of Bio-based Fiber Materials，TianjinKey Labof Pulp and Paper， TianjinUniversityofScienceand Technology，Tianjin，） （*E-mail： lzhq06@tust.edu.cn；liqun@tust. edu.cn）

Abstract：This studyusedchemi-mechanicalbamboo pulpasraw materialand adjustedlignincontent（2.47%～18.67%）through acidic sodium chlorite treatment，followed by cationized modification using 2，3 -epoxypropyltrimethylammonium chloride （EPTAC） as etherifying agent.Thestructureand propertiesofodifiedpulpweresystematicallcharacterized.Theresultsshowedthatquaternaryammonium groups weresucefullygraftedontopulpbyEPTAC，with significantlyincreased Zeta potential.Ligincontent showedpositivecorelationwithdegreeofcationizedsubstitution（DSofHPY0was0.O98，decreasingto0.078forHPY18）.Antibacterial tests demonstrated thatthe inhibitory effectof cationized pulp against E . coli and S .aureus significantly enhanced with increasingligninontent，arbutedtoteauralntibacterialproprtisoflignn，sicalpiercingetoflrgesdoibs inhigh-lignin systems，and synergistic effect of cationized charges.

Keywords：lignin;cationized;EPTAC；antibacterialperformance

隨著生活水平與環(huán)保意識的提升，市場對兼具抗菌性能與可持續(xù)性能的紙制品需求日益增加[1-3。（剩余17198字）