立构复合技术是改善聚乳酸性能的一种有效途径。针对现有的立构复合化聚乳酸基材料制备和性能方面存在的不足，本项目从分子结构设计出发，采用超分子组装方法构筑具有刺激响应性能的立构复合化聚乳酸基超分子聚合物，探讨自组装机制、组装过程中非共价作用力(自互补四重氢键、金属配位)和聚乳酸嵌段对映体间立构复合化氢键作用的协同效应及正交组装过程中自互补四重氢键与金属配位之间的协同作用。通过控制聚乳酸基嵌段共聚物的支化结构、组成和嵌段序列长度，调控聚乳酸基超分子聚合物的结构、组成以及立构复合化程度，从而实现对聚乳酸基材料性能的有效控制。本项目通过探讨立构复合化聚乳酸基超分子聚合物“分子结构设计——自组装行为和机制——结构与性能”的内在响应关系，旨在丰富聚乳酸基材料的制备方法，为制备结构可控的功能化立构复合材料开辟新的途径。

Stereocomplex technology is an effective way to improve the performances of poly(lactide). In view of the shortcomings in the preparation and performances of the existing stereocomplexed materials based on poly(lactide), this project starts from the design of molecular structure, and constructs the stimulus responsive stereocomplexed supramolecular polymers based on poly(lactide) by supramolecular assembly. We would explore the self-assembly mechanism, and the synergistic effect of the non-covalent interactions (self-complementary quadruple hydrogen bond, metal coordination) and the stereocomplexed hydrogen bonding formed by poly(lactide) block enantiomers. The synergistic effect between self-complementary quadruple hydrogen bond and metal coordination during the orthogonal assembly process would also be discussed. By controlling the branching structure, composition and block length of poly(lactide)-based block copolymers, we intend to adjust the structure, composition and stereocomplexation degree of poly(lactide)-based supramolecular polymers, which would achieve effective control of the properties of poly(lactide)-based materials. The discussion of molecular structure design, self-assembly behavior and mechanism, structure and properties intrinsic response relationship of stereocomplexed supramolecular polymers based on poly(lactide) aims to enrich the preparation methods of poly(lactide)-based materials. This would open up new avenues for the preparation of functional stereocomplexed materials with controllable structure.