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聚乳酸/氧化石墨/聚多巴胺纳米纤维膜的制备及性能

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为了改善全球范围内日趋严重的印染废水污染问题,通过仿蜘蛛纺丝静电纺技术,对聚乳酸(PLA)、氧化石墨(GO)和多巴胺(DA)进行共混纺丝,再将DA氧化聚合成PDA,制备PLA/GO/PDA纳米纤维膜,并对纳米纤维膜的微观结构、热性能、力学性能、亲水性与吸附性进行表征.试验结果表明:相对于纯PLA纳米纤维膜,PLA/GO多孔纳米纤维膜平均孔径减小,孔总数量增加;纳米纤维断裂强度、断裂伸长率提高,也更加均匀.加入DA后,纳米纤维的孔径分布更密集,断裂强度大幅增加,断裂伸长率和纯PLA纳米纤维相近.DA经氧化聚合成PDA后得到PLA/GO/PDA纳米纤维膜.纳米纤维膜表面附着一层聚多巴胺,为亲水性材料.基于PLA/GO/DA纳米纤维膜制备的PLA/GO/PDA纳米纤维膜优于基于PLA/GO纳米纤维膜所制备的PLA/GO/PDA纳米纤维膜,其24 h的吸附率高达98.81％.
Preparation of polylactic acid/graphite oxide/polydopamine nanofiber membrane and its properties
In order to improve the increasingly serious water pollution problem in the world,poly(lactic acid)(PLA),graphite oxide(GO)and dopamine(DA)are blended by a spider like electrospinning technology,and then DA is oxidized and polymerized into PDA to prepare PLA/GO/PDA nanofiber membrane.The morphological characterization,thermal properties,mechanical properties,wetting properties and adsorption of the nanofiber membrane are characterized.The results show that compared with pure PLA nanofiber membrane,the average pore diameter of PLA/GO porous nanofiber membrane decreases,and the total number of pores increases;the breaking strength and elongation at break of PLA/GO nanofiber are improved,and the nanofiber is more uniform.After adding DA,the pore size distribution of the nanofiber is more dense,the breaking strength is greatly increased,and the elongation at break is similar to that of pure PLA nanofiber.The PLA/GO/PDA nanofiber membrane is prepared by oxidative polymerization of DA,a layer of dopamine is attached on the surface of the membrane,which makes the membrane a hydrophilic material.It is found that the PLA/GO/PDA nanofiber membrane based on PLA/GO/DA nanofiber membrane is better than the PLA/GO/PDA nanofiber membrane based on PLA/GO nanofiber membrane,with an adsorption rate of up to 98.81％in 24 h.

polylactic acidgraphite oxidepolydopamineelectrostatic spinningfiber membraneoxidative polymerizationadsorption

赵磊、钱曼玉、郁丹妮、田丹、何吉欢

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盐城工业职业技术学院纺织服装学院,江苏盐城 224005

苏州大学纺织与服装工程学院,江苏苏州 215123

苏州大学现代丝绸国家工程实验室,江苏苏州 215123

西安建筑科技大学理学院,陕西西安 710055

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聚乳酸 氧化石墨 聚多巴胺 静电纺丝 纳米纤维膜 氧化聚合 吸附

2023年江苏高校"青蓝工程"优秀教学团队(现代纺织工程技术校企无缝融合教学团队)资助项目江苏省2022年高校国际化人才培养品牌专业江苏省阻燃纤维及功能性纺织品关键技术创新平台

苏教师函202327号2022JMRH-003

2024

上海纺织科技
上海市纺织科学研究院

上海纺织科技

CSTPCD
影响因子：0.476
ISSN：1001-2044
年,卷(期)：2024.52(2)
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