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Effect of heparin calcium different concentrations on some physical properties and structure in polyacrylamide matrix

机译:肝素钙不同浓度对聚丙烯酰胺基体某些物理性质和结构的影响

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Films of polyacrylamide (PAAm) doped with different concentrations of heparin calcium, from 0.0 to 8 wt%, have been prepared by casting method. Studies were carried out utilizing X-ray, FT-IR, UV/VIS, DSC and DC electrical conduction to characterize the structural, optical and thermal properties of the films. Results revealed that the structural and chemical characterizations of PAAm films are affected by the addition of heparin calcium content. XRD spectra revealed that the amorphous phases increase with increase in filling levels of heparin (FLs). FT-IR analysis revealed that incorporation of heparin calcium leads to a small modification in the spectra of films. The optical absorption spectra in the UV/VIS region revealed structural variation increases with increase in concentration, which is reflected in the form of decrease in the energy band gap E_g. Significant changes of DSC curves of the films suggest that strong interaction established between heparin calcium and PAAm molecules. The DC electric conduction data were interpreted on the basis of an intrachain one-dimensional interpolaron hopping model of Kuivalainen.
机译:已经通过流延方法制备了掺杂有0.0-8重量%的不同浓度的肝素钙的聚丙烯酰胺(PAAm)膜。利用X射线,FT-IR,UV / VIS,DSC和DC导电进行了研究,以表征薄膜的结构,光学和热学性质。结果表明,肝素钙含量的增加会影响PAAm膜的结构和化学特性。 XRD谱图表明,非晶态相随着肝素(FLs)填充水平的增加而增加。 FT-IR分析表明,肝素钙的掺入导致薄膜光谱的微小改变。 UV / VIS区域的光吸收光谱表明,结构变化随浓度增加而增加,这以能带隙E_g减小的形式反映出来。膜的DSC曲线的显着变化表明肝素钙和PAAm分子之间建立了强相互作用。基于Kuivalainen的链内一维极化极间跳跃模型解释了直流电传导数据。

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