College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
Carbohydr Res. 2010 Jan 11;345(1):148-53. doi: 10.1016/j.carres.2009.10.012. Epub 2009 Oct 21.
Zirconium sulfophenyl phosphonate (ZrSP), Zr(O(3)P-C(6)H(4)SO(3)H)(2), was synthesized and characterized to prepare nanocomposites based on chitosan (CS). The effects of ZrSP on the structure, morphology, and thermal properties, as well as the mechanical properties of the films were investigated by Fourier-transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA), differential scanning calorimetry (DSC), X-ray diffraction (XRD), scanning electron microscopy (SEM), and tensile tests. FTIR spectroscopy revealed that electrostatic interactions had been formed in the nanocomposites, which improved the compatibility between CS and ZrSP. XRD and SEM results indicated the ZrSP nanoparticles were uniformly distributed in the chitosan matrix at low loading, and obvious aggregations existed at high loading. In addition, compared with neat CS, the values of tensile strength (sigma(b)), elongation at break (epsilon(b)), and water resistance of CS/ZrSP-3 containing 0.6wt% ZrSP had been improved by 60.0%, 69.7%, and 41.8%, respectively.
锆基磺基膦酸苯酯（ZrSP），Zr(O(3)P-C(6)H(4)SO(3)H)(2)，被合成并加以表征，以制备壳聚糖（CS）基纳米复合材料。通过傅里叶变换红外光谱（FTIR）、热重分析（TGA）、差示扫描量热法（DSC）、X 射线衍射（XRD）、扫描电子显微镜（SEM）和拉伸试验，研究了 ZrSP 对膜的结构、形态和热性能以及力学性能的影响。FTIR 光谱表明，纳米复合材料中形成了静电相互作用，提高了 CS 和 ZrSP 之间的相容性。XRD 和 SEM 结果表明，在低负载下，ZrSP 纳米粒子均匀分布在壳聚糖基体中，而在高负载下存在明显的聚集。此外，与纯 CS 相比，在含有 0.6wt%ZrSP 的 CS/ZrSP-3 中，拉伸强度（sigma(b)）、断裂伸长率（epsilon(b)）和耐水性分别提高了 60.0%、69.7%和 41.8%。
