| 초록 |
This study investigates the influences of crosslinking geometries on polymer networks. The geometry effects were evaluated between linear and triangular bindings using catechol-based coordination bonds. Tetra-arm-PEG with catechol end (4-PCA) networks were prepared with bis- and tris-complex coordination bonds through iron cations. Their chemical structure, physical properties, and nanostructures were examined. The results show that the isotropic geometry of 4-PCA corresponds to the linear bindings. Otherwise, triangular units lead to the distortion of 4-PCA networks, showing longer correlation lengths and micro-scaled defects. This study provides insight to develop novel polymer gels, of which binding units control the structural characteristics. |
