Abstract：
In this work, the miscibility of blends of thermoplastic Achira Starch (AS) and polylactic acid (PLA) was evaluated, assisted by Pluronic® F127 an amphiphilic triblock copolymer that acts as a surfactant and promotes the reduction of surface tension among AS and PLA in solution by emulsion stabilization. Different formulations of AS/PLA blends were obtained at 75:25, 50:50, and 25:75 containing 0 %, 4 %, and 8 % of Pluronic® F127, and glycerol was used as a plasticizer. Solvent casting was the method used to obtain blended polymeric films, which were characterized by Scanning Electron Microscope (SEM), Fourier Transform Infrared Spectroscopy (FTIR), X-ray diffraction (XRD), Thermogravimetric Analysis (TGA), differential scanning calorimetry (DSC) and wettability by contact angle measurements. The results demonstrate that miscibility of PLA in AS or vice versa was achieved. The stability of emulsion and posterior drying of the different formulations allows the production of films for packaging, pharmaceutical, or biomedical applications.
摘要：
在这项工作中,对热塑性阿奇拉淀粉（AS）和聚乳酸（PLA）共混物的混溶性进行了评价，由Pluronic®F127提供的两亲性三嵌段共聚物作为表面活性剂，通过乳液稳定促进AS和PLA溶液中表面张力的降低。不同配方的AS/PLA共混物在75:25、50:50和25:75含0%，4%,和8%的Pluronic®F127,并且使用甘油作为增塑剂。溶剂浇铸是用于获得混合聚合物膜的方法，用扫描电子显微镜(SEM)对其进行了表征，傅里叶变换红外光谱(FTIR),X射线衍射(XRD)热重分析（TGA），差示扫描量热法（DSC）和接触角测量的润湿性。结果表明,实现了PLA在AS中的混溶性,反之亦然。乳液的稳定性和不同配方的后干燥允许生产用于包装的薄膜，Pharmaceutical,或生物医学应用。
