季铵化细菌纤维素的制备与抗菌能研究

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关键词：；抗菌性能；自由基聚合 中图分类号：TS71 文献标识码：A DOI：10.11980/j.issn.0254-508X.2025.10.003

Preparationand AntibacterialPropertiesofQuaternizedModified BacterialCellulose

LU Chengshuai RONG Xuhui QIN Ke MENG Guangfan LI Xia HAN Wenjia* （State KeyLabofGreen Papermaking and ResourceRecycling，QiluUniversityofTechnology（Shandong AcademyofSciences）， Ji'nan，Shandong Province，250353） （ * E-mail：hwj200506@163.com）

Abstract：Intissdroinatiolylubsitutioasceedyactigromosobutyomidewithhdroylgouofc terialellose（BC）olelarhan，hrebychingmiectiegroupsotothBCframeworkSubseuently，ufaco transferfreeradicalpolyerization（S-T）wasemploydtatdialldmethylammonmclorde（DADAC）ontothBCsufac，ieldingquaterarymmobacelcelloeBC）Assteticvestigatiosoductedtucidte tesucture，roptdti bacterialmechansofQBC.Teultshowdthatextendngtequatezatiogatingeactiotieresultdinteprgessveaingof DADMAC onto the BC chain，with the QBC24 sample obtained after 24h . During this reaction，the surface roughness of QBC24 increased， the crystallinity index decreased significantly from 8O.37% to 73.21% ，and the surface Zeta potential shifted from -25.4 mV to 25.1 mV. The quaternaryammoniumcations inQBC24efectivelydisruptedbacterialcellstructures，achievingantibacterialratesexcding99 % against both Escherichiacoli and Staphylococcs aureus，therebydemonstrating excellentbroad-spectrumantibacterial performance. Key words：bacterial cellulose；antibacterial performance；free radical polymerization

纤维素基抗菌材料因其卓越的透气性和再生性而受到广泛关注，与其他纤维素相比，（BC）展现出超精细的纳米级纤维网络结构、高结晶度及卓越的生物相容性[12]，在抗菌材料领域呈现出独特优势[3-s]。（剩余12906字）