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首页> 外文期刊>Journal of Applied Polymer Science >Bioartificial Materials Based on Blends of Collagen and Poly(Acrylic Acid)
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Bioartificial Materials Based on Blends of Collagen and Poly(Acrylic Acid)

机译：基于胶原蛋白和聚丙烯酸共混物的生物人工材料

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摘要

The interactions between soluble collagen (C) from calf skin and poly(acrylic acid) (PAA) were studied. Mixing aqueous solutions of collagen and PAA, at various pH values (2.5-4), leads to the formation of complexes that precipitate in teh form of insoluble aggregates. The effects of mixture composition, pH, and ionic strength on C/PAA complex formation were investigated by gravimetric, turbidimetric, and conductometric analysis. The experimental results indicate that the complexes form through electrostatic interactins. Homogeneous solid films with variable C/PAA ratios were obtained by casting from solutions in which the pH was adjusted just over the isoelectric point of collagen, thus avoiding theattractive ionic interactions responsible for teh cmplexation of collagen and PAA molecules. A relevant result obtained is related to the possibility of restoring the ionic interactions between the two polymers inside the solid films. Mixture ocmposition and pH appear to influence the thermal properties fo both complexes and fillms.
机译：研究了小牛皮肤中的可溶性胶原蛋白（C）与聚丙烯酸（PAA）之间的相互作用。在各种pH值（2.5-4）下混合胶原蛋白和PAA的水溶液导致形成复合物，这些复合物以不溶性聚集体的形式沉淀。通过重量分析，比浊分析和电导分析，研究了混合物组成，pH和离子强度对C / PAA配合物形成的影响。实验结果表明，络合物是通过静电相互作用形成的。通过从仅在胶原蛋白的等电点上方调节pH的溶液中流延获得具有可变C / PAA比的均质固体膜，从而避免了引起胶原蛋白和PAA分子复杂化的有吸引力的离子相互作用。获得的相关结果与恢复固体膜内部的两种聚合物之间的离子相互作用的可能性有关。混合物的位置和pH似乎会影响配合物和填充物的热性能。

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