MAA/AL/MMT纳米复合材料与胶原纤维的作用

Interaction of MAA/AL/MMT Nanocomposite and Collagen Fibers

以明胶作为胶原纤维的替代物,通过紫外光谱、红外光谱等手段,研究甲基丙烯酸/丙烯醛/蒙脱土(MAA/AL/MMT)纳米复合材料与胶原纤维的作用机理。结果表明:甲基丙烯酸/丙烯醛/蒙脱土纳米复合材料与胶原纤维的作用,主要是复合材料分子侧链羧基及醛基与胶原纤维侧链氨基间的化学结合,羧基与胶原纤维中的电离氨基形成电价键结合,醛基与胶原纤维氨基生成Schiff碱。而复合材料中的纳米粒子与胶原纤维间并未形成化学结合,纳米粒子的存在仅是提高了聚合物羧基及醛基的反应活性。

The interaction mechanism between methacrylic acid/acraldehyde/montmorillonite （MAA/AL/MMT）nanocomposite and collagen fibers substituted by glutin was studied by UV spectrum and FTIR spectrum. The results show that the chemical combination is formed between carboxyl group and aldehyde group of nanocomposite side chains and amino group of collagen fiber side chains. Carboxyl group of nanocomposite and amino group of collagen fiber is crosslinked by electrovalent bond. The Schiff alkali is formed between aldehyde group of nanocomposite and amino group of collagen fiber. However, there is no chemical combination between the nano particles of nanocomposite and collagen fibers. The reaction activity of carboxyl group and aldehyde group of polymer are improved ars nano particles.