高等学校化学学报 ›› 2024, Vol. 45 ›› Issue (3): 20230375.doi: 10.7503/cjcu20230375

• 高分子化学 • 上一篇    下一篇

O-季铵盐氧化壳聚糖的合成及对棉织物的抗菌整理

周晓龙1, 汪瑞琪1, 陈国丽1, 郭文明1, 陈飞1, 周炎2, 孙立德2, 汤大保2, 许云辉1()   

  1. 1.安徽农业大学材料与化学学院, 合肥 230036
    2.安徽京九丝绸股份有限公司, 阜阳 236000
  • 收稿日期:2023-08-23 出版日期:2024-03-10 发布日期:2024-01-23
  • 通讯作者: 许云辉 E-mail:xuyunhui@ahau.edu.cn
  • 基金资助:
    国家科技部重点专项项目[批准号: 国科发资(2020)151号]、 安徽省科技重大专项计划项目(202103a06020005);绍兴“名士之乡”英才计划项目[批准号: 绍市委人领(2021)1号]和苏州市吴江区科技领军人才项目[批准号: 吴科(2018)131号]资助

Synthesis of O-quaternary Ammonium Salt-oxidized Chitosan and Its Antibacterial Finishing for Cotton Fabric

ZHOU Xiaolong1, WANG Ruiqi1, CHEN Guoli1, GUO Wenming1, CHEN Fei1, ZHOU Yan2, SUN Lide2, TANG Dabao2, XU Yunhui1()   

  1. 1.School of Materials and Chemistry,Anhui Agricultural University,Hefei 230036,China
    2.Anhui Jingjiu Silk Co. ,Ltd. ,Fuyang 236000,China
  • Received:2023-08-23 Online:2024-03-10 Published:2024-01-23
  • Contact: XU Yunhui E-mail:xuyunhui@ahau.edu.cn
  • Supported by:
    the Key Special Project of the Ministry of Science and Technology of China[No.(2020)151], the Anhui Provincial Major Science and Technology Project, China(202103a06020005);the Elite Program of Shaoxing Hometown of Famous Scholars, China[No.(2021)1] and the Suzhou Wujiang District Science and Technology Leading Talent Project, China[No.(2018)131]

摘要:

通过香草醛与壳聚糖C2位氨基形成席夫碱以保护氨基, 然后在C6位羟基上接枝2,3-环氧丙基三甲基氯化铵(GTA)季铵盐, 利用稀HCl乙醇溶液脱除席夫碱后合成出O-季铵盐壳聚糖(O-HACC), 再用KIO4O-HACC中C2和C3位的部分基团选择性地氧化为醛基, 制备出能与纤维反应结合且具有双重抗菌活性的 O-季铵盐氧化壳聚糖(O-HAOCC), 随后接枝棉织物得到O-HAOCC改性棉织物. 傅里叶变换红外光谱(FTIR)、 X射线衍射(XRD)、 氢核磁共振波谱(1H NMR)、 扫描电子显微镜(SEM)和差示扫描量热分析(DSC)等结果表明, O-HAOCC分子中保留了氨基, 同时引入了季铵盐结构和活性醛基, 结晶形态被破坏, 热稳定性降低. 测试结果表明, 氧化3 h的O-HAOCC的水溶性高达237 g/L, 2,2'-联氮双(3-乙基苯并咪唑-6-磺酸)二铵盐(ABTS)自由基清除率在40 min后达到65.58%. 当O-HAOCC质量分数为2%, 反应时间为2 h, 接枝温度为80 ℃时, 改性棉织物的接枝率为9.84%. O-HAOCC改性棉织物对金黄色葡萄球菌和大肠杆菌的抗菌率分别为98.63%和93.38%, 水洗50次后的抗菌率仍在90.75%以上, 可应用于抗菌纺织服装、 家纺面料和医疗卫生品等领域.

关键词: 季铵盐壳聚糖, 香草醛, 选择性氧化, 结构性能, 抗菌织物

Abstract:

By utilizing vanillin to form Schiff bases with the C2 amino group of chitosan in order to protect the amino group, and then grafting 2,3-epoxypropyl trimethylammonium chloride(GTA) quaternary ammonium salt on C6 site in chitosan, O-quaternary ammonium chitosan(O-HACC) was synthesized after removing Schiff-base from the solution of dilute HCl and ethanol. Subsequently partial groups at C2 and C3 positions in O-HACC were selectively oxidized into dialdehyde groups with KIO4, so the O-quaternary ammonium salt-oxidized chitosan(O-HAOCC) was finally obtained, which possessed the fiber-reactive and dual antibacterial activities, and then grafted with cotton fabric to obtain O-HAOCC modified cotton fabric. The characterizations of Fourier-transform infrared spectroscopy(FTIR), X-ray diffraction(XRD), proton nuclear magnetic resonance spectroscopy(1H NMR), scanning electron microscopy(SEM) and differential scanning calorimetry(DSC) displayed that, major amino groups were retained while introducing the structure of quaternary ammonium salt and active dialdehyde groups in O-HAOCC molecules, and the crystal morphology was destroyed, as well as thermal stability reduced. Furthermore, the test results showed that the water solubility of O-HAOCC oxidized for 3 h achieved 23.7 g/100 mL, and the 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid)diamine salt(ABTS) radical scavenging rate after 40 min was 65.58%. The graft ratio of O-HAOCC modified cotton fabric arrived at 9.84% when the mass fraction of O-HAOCC was 2%, the reaction time was 2 h and the graft temperature was 80 ℃. The antibacterial rate of modified cotton fabrics against Staphylococcus aureus and Escherichia coli was 98.63% and 93.38%, respectively, furthermore the antibacterial rate maintained above 90.75% after 50 times of washing, manifesting extensive application in antibacterial textile and garment, home textile and medical and sanitary products, etc.

Key words: Quaternary ammonium salt chitosan, Vanillin, Selective oxidation, Structure and property, Antibacterial fabric

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