Vinca Institute of Nuclear Sciences, University of Belgrade, PO Box 522, Belgrade RS-11001, Serbia.
Carbohydr Res. 2011 Nov 8;346(15):2463-8. doi: 10.1016/j.carres.2011.08.021. Epub 2011 Aug 30.
Complexes based on amidated pectin (AP) and poly(itaconic acid) (PIA) were prepared by casting films from solutions of AP and PIA in different ratios with the pectin amount ranging from 10% to 90% by mass. The complexes were investigated by elemental analysis, Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and thermogravimetry (TG). In all investigated ratios of AP/PIA glassy transparent films with a uniform structure were obtained. The results of elemental analysis confirmed the composition of the complexes, and FTIR spectroscopy has shown carboxylic and amide peak shifting, indicating complex formation between AP and PIA. Comparison of thermograms of AP/PIA films with different ratios of AP indicated that the increase of the amount of AP increases the thermal stability of the films by retarding the onset of the main degradation processes.
基于酰胺化果胶 (AP) 和聚（衣康酸）（PIA）的配合物是通过将 AP 和 PIA 的溶液以不同比例浇铸在薄膜中来制备的，其中果胶的质量含量范围为 10%至 90%。通过元素分析、傅里叶变换红外光谱（FTIR）、扫描电子显微镜（SEM）和热重分析（TG）对配合物进行了研究。在所有研究的 AP/PIA 比例中，都获得了具有均匀结构的玻璃状透明薄膜。元素分析的结果证实了配合物的组成，FTIR 光谱显示羧酸和酰胺峰的移动，表明 AP 和 PIA 之间形成了配合物。比较不同 AP 比例的 AP/PIA 薄膜的热谱表明，AP 含量的增加通过延迟主要降解过程的开始来提高薄膜的热稳定性。
