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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。
Using gelatin as an alternative to collagen fibers, the mechanism of action of MAA / AL / MMT nanocomposites with collagen fibers was studied by means of UV-Vis and infrared spectroscopy. The results showed that the interaction between methacrylic acid / acrolein / montmorillonite nanocomposites and collagen fibers was mainly due to the chemical bond between carboxyl and aldehyde groups on the side chains of the composite materials and the amino groups on the side chains of collagen fibers. Ionization of amino groups formed by bond bonding, aldehyde groups and collagen fiber amino-generated Schiff base. However, the composite material does not form a chemical bond between the nanoparticles and the collagen fibers. The presence of the nanoparticles only improves the reactivity of the carboxyl and aldehyde groups of the polymer.