Abstract：
Here, we investigated the complexation of short chain amylose (SCAs) and palmitic acid (PA), serving as polymeric building blocks that alter the selectivity and directionality of particle growth. This alteration affects the shape anisotropy of the particles, broadening their applications due to the increased surface area. By modifying the concentration of PA, we were able to make spherical, macaron, and disc-shaped particles, demonstrating that PA acts as a structure-directing agent. We further illustrated the lateral and longitudinal stacking kinetics between PA-SCA inclusion complexes during self-assembly, leading to anisotropy. Transmission electron microscope (TEM) and scanning electron microscope (SEM) revealed the structural difference between the initial and final morphologies of palmitic acid-short chain amylose particles (PA-SCAPs) compared to those of short-chain amylose particle (SCAPs). The presence of PA-SCA inclusion complex in the anisotropic particles was confirmed using nuclear magnetic resonance (NMR) and powder x-ray diffraction (XRD) analysis.
摘要：
这里,我们研究了短链直链淀粉（SCAs）和棕榈酸（PA）的络合，用作改变颗粒生长的选择性和方向性的聚合物结构单元。这种改变会影响粒子的形状各向异性，扩大他们的应用由于增加的表面积。通过改变PA的浓度,我们能够制造球形，马卡龙,和圆盘形颗粒，证明PA充当结构导向剂。我们进一步说明了自组装过程中PA-SCA包合物之间的横向和纵向堆积动力学，导致各向异性。透射电子显微镜（TEM）和扫描电子显微镜（SEM）揭示了棕榈酸-短链直链淀粉颗粒（PA-SCAP）与短链直链淀粉颗粒（SCAP）的初始和最终形态之间的结构差异。使用核磁共振(NMR)和粉末X射线衍射(XRD)分析确认各向异性颗粒中PA-SCA包合物的存在。
