Let¡¯s face it, organic chemistry can seem difficult to learn, Name: Urea, Especially from a beginner¡¯s point of view. Like 57-13-6, Name is Urea, molecular formula is amides-buliding-blocks, belongs to amides-buliding-blocks compound. In a document, author is Zhao, Jingnan, introducing its new discovery.
Structure, Performance and Crystallization Behavior of Poly (Lactic Acid)/Humic Acid Amide Composites
Humic acid amide (HA-amide) was prepared by amidation of HA and dodecylamine (DDA) with carbonyl diimidazole (CDI) as coupling reagent. Furthermore, HA-amide was added to poly (lactic acid) (PLA) as a nucleating agent to prepare poly (lactic acid)/humic acid amide composites (PLA/HA-amide) by melt blending. The structure and performance of PLA/HA-amide composites were investigated by thermogravimetric analysis (TG), differential scanning calorimetry (DSC), polarized optical microscopy (POM), and rheological analysis. Non-isothermal crystallization kinetics showed the HA-amide enhanced the crystallization rate of PLA. The results of crystallization behavior of PLA/HA-amide composites showed that HA-amide was an efficient nucleating agent of PLA. [GRAPHICS]
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