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Residual Lignin and Zwitterionic Polymer Grafts on Cellulose Nanocrystals for Antifouling and Antibacterial Applications
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2020-06-15 , DOI: 10.1021/acsapm.0c00212 Dimitrios Georgouvelas 1 , Blanca Jalvo 1 , Luis Valencia 1 , Wassilios Papawassiliou 1 , Andrew J. Pell 1 , Ulrica Edlund 2 , Aji P. Mathew 1
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2020-06-15 , DOI: 10.1021/acsapm.0c00212 Dimitrios Georgouvelas 1 , Blanca Jalvo 1 , Luis Valencia 1 , Wassilios Papawassiliou 1 , Andrew J. Pell 1 , Ulrica Edlund 2 , Aji P. Mathew 1
Affiliation
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Hybrid materials from nanocellulose, lignin, and surface-grafted zwitterionic poly(sulfobetaine methacrylate) (PSBMA) chains are prepared to attain antifouling bio-based nanomaterials with enhanced antibacterial performance. The grafting of PSBMA from both cellulose and lignocellulose nanocrystals (CNC and LCNC, respectively) is attempted; however, the materials’ analysis with FTIR, XPS, and solid-state 13C NMR reveals that the grafting on LCNC is negligible. Antifouling and antibacterial performances of CNC and LCNC, as well as PSBMA-grafted CNC, are evaluated by using quartz crystal microbalance with dissipation monitoring, confocal microscopy, and the agar diffusion method using bovine serum albumin and E. coli ACTT 8937 as protein model and bacterial model, respectively. The results demonstrate that the grafting of CNC with PSBMA improves the antifouling and antibacterial activity of the material compared to pristine CNC and LCNC.
中文翻译：
纤维素纳米晶体上残留的木质素和两性离子聚合物接枝，用于防污和抗菌应用
制备了纳米纤维素，木质素和表面接枝的两性离子聚甲基丙烯酸磺基甜菜碱酯（PSBMA）链的杂化材料，以获得具有增强抗菌性能的防污生物基纳米材料。尝试从纤维素和木质纤维素纳米晶体（分别为CNC和LCNC）接枝PSBMA；但是，用FTIR，XPS和固态13 C NMR对材料进行的分析表明，LCNC上的接枝微不足道。通过使用具有耗散监测的石英晶体微量天平，共聚焦显微镜以及使用牛血清白蛋白和大肠杆菌的琼脂扩散法，对CNC和LCNC以及PSBMA接枝的CNC的防污和抗菌性能进行了评估。ACTT 8937分别为蛋白质模型和细菌模型。结果表明，与原始CNC和LCNC相比，用PSBMA接枝CNC可以改善材料的防污和抗菌活性。
更新日期：2020-08-14
中文翻译：
纤维素纳米晶体上残留的木质素和两性离子聚合物接枝，用于防污和抗菌应用
制备了纳米纤维素，木质素和表面接枝的两性离子聚甲基丙烯酸磺基甜菜碱酯（PSBMA）链的杂化材料，以获得具有增强抗菌性能的防污生物基纳米材料。尝试从纤维素和木质纤维素纳米晶体（分别为CNC和LCNC）接枝PSBMA；但是，用FTIR，XPS和固态13 C NMR对材料进行的分析表明，LCNC上的接枝微不足道。通过使用具有耗散监测的石英晶体微量天平，共聚焦显微镜以及使用牛血清白蛋白和大肠杆菌的琼脂扩散法，对CNC和LCNC以及PSBMA接枝的CNC的防污和抗菌性能进行了评估。ACTT 8937分别为蛋白质模型和细菌模型。结果表明，与原始CNC和LCNC相比，用PSBMA接枝CNC可以改善材料的防污和抗菌活性。
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