采用湿法纺丝法将具有抗菌活性的碳量子点(CQDs)与粘胶纺丝液共混制备CQDs/粘胶抗菌复合纤维。通过台式扫描电子显微镜、傅里叶变换红外光谱仪、X射线光电子能谱仪、热重分析仪以及抗菌性能测试研究了CQDs对粘胶纤维结构与性能的影响。结果表明:CQDs/粘胶抗菌复合纤维表面纵向平直且有沟槽;随着CQDs含量的增加,复合纤维直径呈现先减小后增大的趋势,纤维直径分布在18～23μm之间;在湿法纺丝过程中CQDs已负载到粘胶纤维中,两者具有良好的相容性;添加CQDs有助于提升粘胶复合纤维的热稳定性。在光照条件下,复合纤维对大肠杆菌和金黄色葡萄球菌的抑菌率显著增强,其中CQDs质量分数为4%的CQDs/粘胶抗菌复合纤维抑菌率达到了99.99%,可用于抗菌功能纺织品以及医疗卫生用品。
Carbon quantum dots (CQDs) with antimicrobial activity were blended with viscose spinning solution to prepare CQDs/viscose antimicrobial composite fibers by wet spinning method.The effects of CQDs incorporation on the structure and properties of viscose fibers were analyzed by desktop scanning electron microscope,Fourier transform infrared spectrometer (FT-IR),X-ray photoelectron spectrometer (XPS),thermogravimetric analysis (TGA) and antibacterial performance test,respectively.The results showed that the surface of CQDs/viscose composite fibers was longitudinal straight and with grooves.The diameter of composite fibers presented a trend of decreasing first and then increasing with the increase of CQDs content,and their diameter distributed in the range of 18～23μm.FT-IR and XPS analysis indicated that CQDs had been successfully loaded into viscose fibers during wet spinning,and the two had good compatibility.The results of TGA revealed that adding CQDs helped to enhance the thermal stability of viscose composite fibers.The antibacterial rates of the composite fibers against Escherichia coli and Staphylococcus aureus were significantly enhanced under light conditions.In addition,the antibacterial rates of CQDs/viscose antimicrobial composite fibers with CQDs mass fraction of 4% reached 99.99%,which could be applied to the development and application of antimicrobial functional textiles.
[1] Sayyed A J,Deshmukh N A,Pinjari D V.A critical review of manufacturing processes used in regenerated cellulosic fibres:viscose,cellulose acetate,cuprammonium,LiCl/DMAc,ionic liquids,and NMMO based lyocell[J].Cellulose,2019,26(5):2913-2940.
[2] Rosalia M,Grisoli P,Dorati R,et al.Influence of electrospun fibre secondary morphology on antibiotic release kinetic and its impact on antimicrobic efficacy[J].International Journal of Molecular Sciences,2023,24(15):12108.
[3] 郝小第,陈宇,鲁振坦,等.抗菌功能纤维材料的研究进展[J].纺织工程学报,2023,1(4):86-97.
[4] Korica M,Peršin Z,Trifunovič S,et al.Influence of different pretreatments on the antibacterial properties of chitosan functionalized viscose fabric:TEMPO oxidation and coating with TEMPO oxidized cellulose nanofibrils[J].Materials,2019,12(19):3144.
[5] Gulati R,Sharma S,Sharma R K.Antimicrobial textile:recent developments and functional perspective[J].Polymer Bulletin,2022,79(8):5747-5771.
[6] Teixeira-Santos R,Gomes M,Gomes L C,et al.Antimicrobial and anti-adhesive properties of carbon nanotube-based surfaces for medical applications:a systematic review[J].iScience,2021,24(1):102001.
[7] Kumar P,Huo P P,Zhang R Z,et al.Antibacterial properties of graphene-based nanomaterials[J].Nanomaterials,2019,9(5):32.
[8] Alavi M,Jabari E,Jabbari E.Functionalized carbon-based nanomaterials and quantum dots with antibacterial activity:a review[J].Expert Review of Anti-Infective Therapy,2021,19(1):35-44.
[9] Zhao C F,Wang X W,Yu L Y,et al.Quaternized carbon quantum dots with broad-spectrum antibacterial activity for the treatment of wounds infected with mixed bacteria[J].Acta Biomaterialia,2022,138:528-544.
[10] Li Z Q,Ai J W,Wu D S,et al.Robust integration of light-dri-ven carbon quantum dots with bacterial cellulose enables excellent mechanical and antibacterial biodegradable yarn[J].International Journal of Biological Macromolecules,2024,257:11.
[11] 全国纺织品标准化技术委员会基础分委会.GB/T 20944.3—2008纺织品 抗菌性能的评价 第3部分:振荡法[S].北京:中国标准出版社,2008.
[12] 李胜臻,张铃娟,张鹏.抗菌纺织品检测标准分析比对研究[J].印染助剂,2022,39(6):5-10.
[13] 张路鹏,张清梅,何松杰,等.碳点的功能化研究进展[J].发光学报,2022,43(7):1147-1163.
[14] 王国秀,高兴,王朝晖,等.再生纤维素食品包装材料应用进展及法规研究[J].包装工程,2024,45(9):86-95.
[15] 张文莉,陈琳,薛宝霞,等.碳点及其抗菌复合材料的研究进展[J].复合材料学报,2023,40(7):3738-3755.
[16] Zhu F L,Li X,Feng Q Q.Thermal decomposed behavior and kinetic study for untreated and flame retardant treated regenerated cellulose fibers using thermogravimetric analysis[J].Journal of Thermal Analysis and Calorimetry,2021,145(2):423-435.
[17] Slapnik J,Lucyshyn T,Pinter G.Relationships between the decomposition behaviour of renewable fibres and their reinforcing effect in composites processed at high temperatures[J].Polymers,2021,13(24):4448.
[18] Gagic M,Kociova S,Smerkova K,et al.One-pot synthesis of natural amine-modified biocompatible carbon quantum dots with antibacterial activity[J].Journal of Colloid and Interface Science,2020,580:30-48.
[19] Nie X,Jiang C,Wu S,et al.Carbon quantum dots:a bright future as photosensitizers for in vitro antibacterial photodynamic inactivation[J].Journal of Photochemistry and Photobiology B:Biology,2020,206:111864.
基金资助
福州市科技创新创业人才培育计划项目(2023-R-002);福建省自然科学基金面上项目(2022J011131);福州市科技重大“揭榜挂帅”项目(2022-ZD-006);福州市长乐区科技重大“揭榜挂帅”项目(CLJBGS20220001);福建省对外合作项目(2022I0045);福建省技术创新重点攻关及产业化项目(2023G028)
PDF
