Lewandowska Katarzyna
Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarin 7, 87-100 Toruń, Poland.
Materials (Basel). 2020 Oct 23;13(21):4750. doi: 10.3390/ma13214750.
In this study, blends based on hyaluronic acid (HA) and poly(vinyl alcohol) (PVA) were characterized by the viscometric method, steady shear rheological tests and FTIR spectroscopy (Fourier Transform Infrared Spectroscopy). Viscometric studies showed the miscibility of HA and PVA in distilled water: 0.1 mol dm NaCl and 0.1 mol dm HCl. The method proposed by Garcia et al. was applied to assess the miscibility of polymers, while and were introduced to determine of miscibility from the Huggins plots. The viscometric data showed that the attractive forces of HA and PVA were dominant when dissolved in 0.1 mol dm NaCl and 0.1 mol dm HCl, while, in distilled water, repulsive forces played the leading role. All polymer solutions were well characterized using a power law model, and exhibited non-Newtonian behavior with pseudoplasticity increasing with the increasing weight fraction of HA in 0.1 mol dm NaCl and 0.1 mol dm HCl. FTIR studies exhibited the formation of new intermolecular interactions between HA and PVA via hydrogen bonding.
在本研究中，采用粘度法、稳态剪切流变测试和傅里叶变换红外光谱（FTIR）对基于透明质酸（HA）和聚乙烯醇（PVA）的共混物进行了表征。粘度研究表明，HA和PVA在蒸馏水、0.1 mol dm NaCl和0.1 mol dm HCl中具有互溶性。采用Garcia等人提出的方法评估聚合物的互溶性，同时引入 和 从哈金斯图确定互溶性。粘度数据表明，当溶解在0.1 mol dm NaCl和0.1 mol dm HCl中时，HA和PVA的吸引力占主导，而在蒸馏水中，排斥力起主导作用。所有聚合物溶液均使用幂律模型进行了很好的表征，并表现出非牛顿行为，在0.1 mol dm NaCl和0.1 mol dm HCl中，假塑性随HA重量分数的增加而增加。FTIR研究表明，HA和PVA之间通过氢键形成了新的分子间相互作用。
