木质素含量调控的阳离子化纸浆结构-性能协同机制及其抗菌功能强化研究

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作者简介：王为壮，在读硕士研究生；研究方向：纸浆阳离子化改性及应用。

关键词：木质素；阳离子化；2.3-环氧丙基三甲基氯化铵；抗菌性能中图分类号：TS79 文献标识码：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

随着生活水平与环保意识的提升，市场对兼具抗菌性能与可持续性能的纸制品需求日益增加[1-3。（剩余17198字）