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首页> 外文期刊>Journal of Applied Polymer Science >In situ photopolymerization of PEGDA-protein hydrogels on nanotube surfaces
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In situ photopolymerization of PEGDA-protein hydrogels on nanotube surfaces

机译：PEGDA蛋白质水凝胶在纳米管表面上的原位光聚合

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摘要

Peptide nanotubes were used as templates for the growth of poly(ethylene glycol) diacrylate-based nanoscale hydrogels via photopolymerization. A Rose Bengal di-amine derivative comprised of a photoactivator and coinitiator within the same molecule was used as the photoinitiator to increase photopolymerization efficiency. The nanotubes were covalently bound to the protein BSA before formation of the hydrogels. We also examined the photopolymerization efficiency in reactions involving nanotubes in the absence of BSA. Although photopolymerization occurred efficiently under both conditions, higher yields of highly crosslinked nanostructures were obtained for the protein bound nanotube-PEGDA hydrogels. It was observed that the swelling ratios were also dependent upon whether or not BSA was bound to the nanotubes before photopolymerization. The thermal properties of the nanocomposite hydrogels were investigated using differential scanning calorimetry analyses and the morphologies were examined using TEM, SEM, and AFM analyses. Such nanocomposites prepared by low cost, mild methods could be extremely efficient for the in situ preparation of three-dimensional arrays of peptide nanotube grafted hydrogels.
机译：肽纳米管用作模板，用于通过光聚合法生长聚（乙二醇）二丙烯酸酯基纳米级水凝胶。由在同一分子内包含光活化剂和共引发剂的玫瑰红二胺衍生物用作光引发剂以提高光聚合效率。在形成水凝胶之前，将纳米管与蛋白质BSA共价结合。我们还检查了在没有BSA的情况下涉及纳米管的反应中的光聚合效率。尽管在两种条件下均有效地发生了光致聚合，但是对于蛋白质结合的纳米管-PEGDA水凝胶，获得了更高产率的高度交联的纳米结构。观察到溶胀率还取决于光聚合之前BSA是否结合至纳米管。使用差示扫描量热法分析了纳米复合水凝胶的热性质，并使用TEM，SEM和AFM分析检查了形态。通过低成本，温和的方法制备的此类纳米复合材料对于原位制备肽纳米管接枝水凝胶的三维阵列可能非常有效。

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