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投稿时间:2018-03-17
投稿时间:2018-03-17
中文摘要: 将4-乙烯基吡啶(4-VP)、丙烯酸乙酯(EA)和丙烯酸丁酯(BA)进行自由基三元共聚,得到聚(4-乙烯基吡啶-丙烯酸乙酯-丙烯酸丁酯)三元共聚物(P(4-VP-co-EA-co-BA));随后用1,3-丙磺酸内酯(1,3-PS)对其进行季铵化改性,得到了两性离子共聚物P(4-VPPS-co-EA-co-BA)。利用核磁共振氢谱(1H-NMR)、傅里叶转换红外光谱(FT-IR)、热重(TG)分析、万能材料试验、稀释涂布平板法和显微镜等对P(4-VP-co-EA-co-BA)和P(4-VPPS-co-EA-co-BA)的化学结构、热力学性能、杀菌性能和抗黏附性能进行了表征。结果表明:P(4-VPPS-co-EA-co-BA)不仅具有较好的热稳定性、拉伸强度和韧性,还具有优秀的抗菌与抗黏附性能。
Abstract:Zwitterionic polymers have been extensively studied in recent years due to their excellent antifouling properties. By radical copolymer with 4-vinylpyridine (4-VP), ethyl acrylate (EA) and butyl acrylate (BA), the zwitterionic copolymers (P(4-VP-co-EA-co-BA)) with different copolymerization ratios were prepared. Then, P(4-VP-co-EA-co-BA) was modified by 1,3-propanesultone (1,3-PS) to obtain functional zwitterionic copolymer resin P(4-VPPS-co-EA-co-BA), which had excellent antibacterial and antifouling property. In order to improve the stability in the water and the mechanical properties, P(4-VPPS-co-EA-co-BA) was cross-linked by different amounts of dichloroethane. Finally, P(4-VP-co-EA-co-BA) and P(4-VPPS-co-EA-co-BA) were characterized by H-nuclear magnetic resonance (1H-NMR) and Fourier transform infrared spectroscopy (FT-IR). Thermal properties, mechanical properties, antibacterial properties and antifouling properties of P(4-VPPS-co-EA-co-BA) were examined by thermal-gravimetric analysis (TG), universal material testing machine, the serial dilution and spread plate technique and microscope, respectively. Results indicated that P(4-VP-co-EA-co-BA) and P(4-VPPS-co-EA-co-BA) were successfully prepared. When the mole fraction of 4-VPPS unit in P(4-VPPS-co-EA-co-BA) (f4-VPPS) was changed from 14.4% to 28.9%, the tensile strength was improved from 6.51 MPa to 8.93 MPa, while the elongation at break was reduced from 219.00% to 147.60%. When f4-VPPS was 24.2%, the mechanical properties of P(4-VPPS-co-EA-co-BA) became balanced with tensile strength and elongation at break reaching 7.02 MPa and 195.26%, respectively, meanwhile the thermal decomposition temperature was 299℃. What's more, the tensile strength of P(4-VPPS-co-EA-co-BA) was greatly improved by cross-linking reaction with dichloroethane. When cross-linking degree was 6%, tensile strength and elongation at break reached 9.97 MPa and 152.21%, respectively. And the water absorption of P(4-VPPS-co-EA-co-BA) was reduced by cross-linking reaction with dichloroethane. When f4-VPPS reached 19.2%, antibacterial and antifouling abilities of P(4-VPPS-co-EA-co-BA) were excellent to Escherichia coli and Staphylococcus aureus.
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引用本文:
刘胜,孙云龙,陈昌林,徐衡,雷昆,郎美东.4-乙烯基吡啶型两性离子共聚物树脂的制备及其性能[J].功能高分子学报,2018,31(6):553-560.
LIU Sheng,SUN Yun-long,CHEN Chang-lin,XU Heng,LEI Kun,LANG Mei-dong.Preparation and Properties of 4-Vinylpyridine Zwitterionic Copolymer Resin[J].Journal of Functional Polymers,2018,31(6):553-560.
刘胜,孙云龙,陈昌林,徐衡,雷昆,郎美东.4-乙烯基吡啶型两性离子共聚物树脂的制备及其性能[J].功能高分子学报,2018,31(6):553-560.
LIU Sheng,SUN Yun-long,CHEN Chang-lin,XU Heng,LEI Kun,LANG Mei-dong.Preparation and Properties of 4-Vinylpyridine Zwitterionic Copolymer Resin[J].Journal of Functional Polymers,2018,31(6):553-560.