季铵化两亲嵌段共聚物/氧化石墨烯和氧化石墨烯/聚偏二氟乙烯电纺纳米纤维上的聚乙烯醇涂层，具有超亲水和抗菌性能。,Scientific Reports

当前位置： X-MOL 学术 › Sci. Rep. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

季铵化两亲嵌段共聚物/氧化石墨烯和氧化石墨烯/聚偏二氟乙烯电纺纳米纤维上的聚乙烯醇涂层，具有超亲水和抗菌性能。
Scientific Reports ( IF 3.8 ) Pub Date : 2019-01-23 , DOI: 10.1038/s41598-018-36479-w
Jeong-Ann Park _{1,

2} , Kie Yong Cho ₃ , Chee Hun Han _{4,

5} , Aram Nam _{4,

5} , Jae-Hyun Kim ₄ , Sang-Hyup Lee _{4,

5} , Jae-Woo Choi _{4,

6}

Affiliation

聚偏二氟乙烯（PVDF）是用于静电纺丝的常用聚合物，但是，其高疏水性是一个主要缺点，会导致结垢。为了引入亲水性和抗菌活性，合成了季铵官能化的两亲性二嵌段共聚物，并将其与PVDF /氧化石墨烯（GO）溶液共混，然后进行静电纺丝并涂有亲水性聚合物聚乙烯醇（PVA）。合成了由疏水性聚（甲基丙烯酸甲酯）嵌段和亲水性聚（N，N-2-（二甲基氨基）-甲基丙烯酸乙酯）嵌段（PMMA-b-PDMAEMA）组成的两亲嵌段共聚物。已成功引入具有三种不同烷基链长（C2，C4和C8）的聚合物季铵盐，从而获得了q-PMMA-b-PDMAEMA。纳米纤维基质中的q-PMMA-b-PDMAEMA通过傅立叶变换红外光谱中的C = O波段（1734 cm-1）得到确认。如场发射扫描和透射电子显微术所揭示的，纳米级球形突起分布在表面上。PVDF / GO / q-PMMA-b-PDMAEMA @ PVA纳米纤维具有超亲水性能（水接触角= 0–20°），并且通常可通过增加烷基链长度来提高纯净水通量。当引入最长的烷基链（C8，OBC）时，大肠杆菌（4.2×105 CFU / mg）和金黄色葡萄球菌（总细菌）的最低结垢率最低（49.99％），而60分钟后的细菌去除能力最高。 6.1×105 CFU / mg）通过生长抑制和细胞质膜损伤。如场发射扫描和透射电子显微术所揭示的，纳米级球形突起分布在表面上。PVDF / GO / q-PMMA-b-PDMAEMA @ PVA纳米纤维具有超亲水性能（水接触角= 0–20°），并且通常可通过增加烷基链长度来提高纯净水通量。当引入最长的烷基链（C8，OBC）时，大肠杆菌（4.2×105 CFU / mg）和金黄色葡萄球菌（总细菌）的最低结垢率最低（49.99％），而60分钟后的细菌去除能力最高。 6.1×105 CFU / mg）通过生长抑制和细胞质膜损伤。如场发射扫描和透射电子显微术所揭示的，纳米级球形突起分布在表面上。PVDF / GO / q-PMMA-b-PDMAEMA @ PVA纳米纤维具有超亲水性能（水接触角= 0–20°），并且通常可通过增加烷基链长度来提高纯净水通量。当引入最长的烷基链（C8，OBC）时，大肠杆菌（4.2×105 CFU / mg）和金黄色葡萄球菌（总细菌）的最低结垢率最低（49.99％），而60分钟后的细菌去除能力最高。 6.1×105 CFU / mg）通过生长抑制和细胞质膜损伤。PVDF / GO / q-PMMA-b-PDMAEMA @ PVA纳米纤维具有超亲水性能（水接触角= 0–20°），并且通常可通过增加烷基链长度来提高纯净水通量。当引入最长的烷基链（C8，OBC）时，大肠杆菌（4.2×105 CFU / mg）和金黄色葡萄球菌（总细菌）的最低结垢率最低（49.99％），而60分钟后的细菌去除能力最高。 6.1×105 CFU / mg）通过生长抑制和细胞质膜损伤。PVDF / GO / q-PMMA-b-PDMAEMA @ PVA纳米纤维具有超亲水性能（水接触角= 0–20°），并且通常通过增加烷基链长来改善纯净水通量。当引入最长的烷基链（C8，OBC）时，大肠杆菌（4.2×105 CFU / mg）和金黄色葡萄球菌（总细菌）的最低结垢率最低（49.99％），而60分钟后的细菌去除能力最高。 6.1×105 CFU / mg）通过生长抑制和细胞质膜损伤。

"点击查看英文标题和摘要"

Quaternized Amphiphilic Block Copolymers/Graphene Oxide and a Poly(vinyl alcohol) Coating Layer on Graphene Oxide/Poly(vinylidene fluoride) Electrospun Nanofibers for Superhydrophilic and Antibacterial Properties.

Poly(vinylidene fluoride) (PVDF) is common polymer for electrospinning, however, its high hydrophobicity is a major drawback, which cause fouling. To introduce hydrophilicity and antibacterial activity, quaternary ammonium-functionalized amphiphilic diblock copolymers were synthesized and blended with a PVDF/graphene oxide (GO) solution, then, electrospun and coated with a hydrophilic polymer, poly(vinyl alcohol) (PVA). The amphiphilic block copolymer, consisting of a hydrophobic poly(methyl methacrylate) block and a hydrophilic poly[N,N-2-(dimethylamino)-ethyl methacrylate) block (PMMA-b-PDMAEMA), was synthesized. Polymeric quaternary ammonium with three different alkyl chain lengths (C2, C4, and C8) were successfully introduced to obtain as q-PMMA-b-PDMAEMA. The q-PMMA-b-PDMAEMA in the nanofiber matrix was confirmed by C=O bands (1734 cm−1) in the Fourier transform infrared spectra. Nano-sized spherical protuberances were distributed on the surface as revealed by field emission scanning and transmission electron microscopies. The PVDF/GO/q-PMMA-b-PDMAEMA@PVA nanofibers has superhydrophilic properties (water contact angle = 0–20°) and the pure water flux was generally improved by increasing the alkyl chain length. When introducing the longest alkyl chain (C8,OBC), the total fouling ratio was the lowest (49.99%) and the bacteria removal capacities after 60 min were the highest for both Escherichia coli (4.2 × 105 CFU/mg) and Staphylococcus aureus (6.1 × 105 CFU/mg) via growth inhibition and cytoplasmic membrane damage.

更新日期：2019-01-23

点击分享查看原文

点击收藏

公开下载

阅读更多本刊新发论文本刊介绍/投稿指南