Kotsuchibashi Yohei, Ebara Mitsuhiro
International Center for Young Scientists (ICYS) and International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
Biomaterials Unit, WPI-MANA, NIMS, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
Polymers (Basel). 2016 Feb 5;8(2):41. doi: 10.3390/polym8020041.
A facile functionalization method of poly(ethylene--vinyl alcohol) (EVOH) nanofiber meshes was demonstrated by utilizing the benzoxaborole-diol interaction between EVOH and benzoxaborole-based copolymers (BOP). EVOH and BOP were firstly mixed to prepare the quasi-gel-state solution with enough viscosity for electro-spinning. The fiber morphology was controlled via changing the mixing ratio of EVOH and BOP. The prepared EVOH/BOP nanofiber mesh showed good stability in aqueous solution. Over 97% of the nanofibers remained after the immersion test for 24 h in acid or alkali aqueous solutions without changing their morphology. Temperature and pH-responsive moieties were copolymerized with BOP, and cationic dye was easily immobilized into the nanofiber mesh via an electrostatic interaction. Therefore, the proposed functionalization technique is possible to perform on multi-functionalized molecule-incorporated nanofibers that enable the fibers to show the environmental stimuli-responsive property for the further applications of the EVOH materials.
通过利用乙烯-乙烯醇共聚物（EVOH）与苯并硼氧杂环戊二烯基共聚物（BOP）之间的苯并硼氧杂环戊二烯-二醇相互作用，展示了一种简便的聚（乙烯-乙烯醇）（EVOH）纳米纤维网功能化方法。首先将EVOH和BOP混合以制备具有足够粘度用于静电纺丝的准凝胶态溶液。通过改变EVOH和BOP的混合比例来控制纤维形态。制备的EVOH/BOP纳米纤维网在水溶液中表现出良好的稳定性。在酸或碱水溶液中浸泡24小时后，超过97%的纳米纤维保留下来，且其形态未发生变化。温度和pH响应部分与BOP共聚，阳离子染料通过静电相互作用很容易固定在纳米纤维网中。因此，所提出的功能化技术有可能应用于掺入多功能分子的纳米纤维，使纤维表现出环境刺激响应特性，以促进EVOH材料的进一步应用。
