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首页> 外文期刊>Biomaterials >DEVELOPMENT OF METHODS FOR QUANTITATIVE CHARACTERIZATION OF NETWORK MORPHOLOGY IN PHARMACEUTICAL HYDROGELS
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DEVELOPMENT OF METHODS FOR QUANTITATIVE CHARACTERIZATION OF NETWORK MORPHOLOGY IN PHARMACEUTICAL HYDROGELS

机译:药物水合物网络形态定量表征方法的开发

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We have employed a variety of methods which satisfactorily characterize the structure of polymeric hydrogels beyond the level of information provided by a single swelling test. We applied these techniques to gels which have potential for use as pharmaceuticals for the control of elevated phosphorous levels in patients suffering from chronic kidney failure. These 'fingerprinting' techniques help us understand the effects of various processing parameters on the gel morphology. Wide-angle X-ray diffraction experiments verified the structure and reproducibility across synthesized hydrogel batches. Measurements of the temperature-and frequency-dependent dielectric relaxation provided information on the network topology. Real-time diffusion experiments were performed using inductively coupled plasma atomic emission spectroscopy. Spherical gel particles (510 mu m diameter) were used to measure equilibrium phosphate Idadings of 4.5 mmoles g(-1) from direct measurement of the decrease in phosphate ion concentration in aqueous solutions. (C) 1997 Elsevier Science Limited. All rights reserved. [References: 5]
机译:我们已经采用了多种方法来令人满意地表征聚合物水凝胶的结构,这超出了一次溶胀试验所提供的信息水平。我们将这些技术应用于凝胶,这些凝胶有潜力用作控制慢性肾脏衰竭患者磷水平升高的药物。这些“指纹”技术可帮助我们了解各种加工参数对凝胶形态的影响。广角X射线衍射实验证实了合成水凝胶批次的结构和重现性。温度和频率相关介电弛豫的测量提供了有关网络拓扑的信息。使用电感耦合等离子体原子发射光谱法进行实时扩散实验。通过直接测量水溶液中磷酸根离子浓度的降低,使用球形凝胶颗粒(直径510微米)测量4.5 mmoles g(-1)的平衡磷酸根Idadings。 (C)1997 Elsevier Science Limited。版权所有。 [参考:5]

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