Analysis of molecular interactions in poly(methacrylic acid-g-ethylene glycol) hydrogels
Analysis of molecular interactions in poly(methacrylic acid-g-ethylene glycol) hydrogels
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DOI：
10.1016/s0032-3861(03)00307-0
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发表时间：
2003-06-01
期刊：
影响因子：
4.6
通讯作者：
Peppas, NA
中科院分区：
文献类型：
--
作者：
Kim, B;Peppas, NA
用衰减全反射傅里叶变换红外光谱研究了P(MAA-g-EG)水凝胶在水化状态下的分子和结构变化。毛发研究发现，在低pH值时形成氢键络合物，在高pH值时形成聚电解质络合物。水凝胶中接枝的聚乙二醇的相对分子质量不影响氢键和静电斥力。此外，宏观溶胀性能的研究表明，P(MAA-g-EG)水凝胶中接枝的聚乙二醇链的存在有助于氢键的形成。(C)2003爱思唯尔科学有限公司。保留所有权利。
Molecular and structural changes of the P(MAA-g-EG) hydrogels were investigated in their hydrated state using attenuated total reflectance Fourier transform infrared spectroscopy. FUR studies identified the formation of hydrogen-bonded complexes at low pH and polyelectrolyte complexes at high pH. Hydrogen bonding and electrostatic repulsion were not affected by the grafted PEG molecular weight in the hydrogels. Additionally, investigation of the macroscopic swelling properties showed that the presence of the grafted PEG chain in the P(MAA-g-EG) hydrogels contributed to the formation of hydrogen bonds. (C) 2003 Elsevier Science Ltd. All rights reserved.