Fast fabrication of superabsorbent polyampholytic nanocomposite hydrogels via plasma‐ignited frontal polymerization
Fast fabrication of superabsorbent polyampholytic nanocomposite hydrogels via plasma‐ignited frontal polymerization
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DOI：
10.1002/pola.27086
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发表时间：
2014-04
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影响因子：
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通讯作者：
H. Shao;Cai‐Feng Wang;Su Chen;Chen Xu
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文献类型：
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作者：
H. Shao;Cai‐Feng Wang;Su Chen;Chen Xu
我们报道了通过等离子体点火正面聚合（PIFP）轻松合成聚（VI-co-MAA）超吸收性聚两性水凝胶（VI = N-乙烯基咪唑，MAA = 甲基丙烯酸）。用空气等离子体点燃反应物的顶面时，发生正面聚合，并在几分钟内获得聚（VI-co-MAA）水凝胶。研究了聚(VI-co-MAA)水凝胶的制备参数以及溶胀能力、形态和化学结构。有趣的是，水凝胶在水中具有超强吸水性，并且对 pH 值表现出两性特性。此外，水凝胶能够通过静电相互作用捕获阳离子染料，为进一步开发用于水净化的染料吸附剂提供了潜力。此外，通过将量子点（碳点或CdS纳米晶体）嵌入聚合物基质中获得了纳米复合水凝胶，这赋予了纳米复合水凝胶良好的荧光性以及在生物成像和生物传感方面的潜在应用。结果表明，FP 可作为一种替代方法，轻松合成多功能水凝胶，并提高效率和节能性。 © 2014 Wiley periodicals, Inc. J. Polym。科学，A 部分：聚合物。化学。 2014, 52, 912–920
We report the facile synthesis of poly(VI-co-MAA) superabsorbent polyampholytic hydrogels (VI = N-vinylimidazole, MAA = methacrylic acid) via plasma-ignited frontal polymerization (PIFP). On igniting the top surface of the reactants with air plasma, frontal polymerization occurred and poly(VI-co-MAA) hydrogels were obtained within minutes. The preparation parameters were investigated, along with swelling capacity, morphology, and chemical structures of poly(VI-co-MAA) hydrogels. Interestingly, the hydrogels are superabsorbent in water and show ampholytic characteristic toward pH. Moreover, the hydrogels are able to capture cationic dyes through electrostatic interaction, offering the potential for further development as dye adsorbents for water purification. In addition, nanocomposite hydrogels were obtained by embedding quantum dots (carbon dots or CdS nanocrystals) into the polymer matrix, which endows the nanocomposite hydrogels with favorable fluorescence and potential applications in bioimaging and biosensing. The results indicate that FP can be applied as an alternative means for facile synthesis of multifunctional hydrogels with additional efficiency and energy-saving. © 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2014, 52, 912–920