Study of brucite-sugar alcohol hybrids

本文报道了利用无害的糖醇（木糖醇和山梨醇）制备有机水镁石杂化合物。由于木糖醇和山梨糖醇在室温下是固体物质，因此通过水热处理和熔融混合两种不同的方法进行了杂交研究。用熔体插层法制备了br -糖醇杂化物。XRD和FTIR分析表明，有机分子被嵌入水镁石层中，克服了BR层之间羟基键的屏障。x射线光电子能谱和热分析表明，175C的插层材料在BR层间表面形成共价Mg-O-C键。此外，所得有机改性水镁石与纤维素在双螺杆捏合机中熔融捏合。复合材料的拉伸性能似乎反映了纤维素与杂交粉末之间的高度亲和力。

We report the preparation of organic-brucite hybrids using harmless sugar alcohols (xylitol and sorbitol). Since xylitol and sorbitol are solid materials at room temperature, the hybridization was investigated by comparing two separate methods, hydrothermal treatment and melt mixing. BR-sugar alcohol hybrids were successfully prepared by a melt intercalation method at 175C. XRD and FTIR analyses indicated that organic molecules were intercalated into the brucite layers, overcoming the barrier of hydroxyl bonds between the BR layers. X-ray photoelectron spectroscopy and thermal analyses showed that the intercalated materials at 175C resulted in the formation of covalent Mg-O-C bond linkages on the interlayer surface of BR. Moreover, the resulting organically modified brucite was melt-kneaded with cellulose in a twin-screw kneader. The tensile properties of the composite appeared to reflect the highly affinity between cellulose and the hybrid powder.