- Strain-induced multiscale structural evolutions of crystallized polymers: From fundamental studies to recent progresses
- 来源：周健副研究员个人网站
2024-10-23
- Semicrystalline polymers products usually adopt a crystallized form in their end-use environment. These crystallized polymers undergo various deformations under different external fields ( e.g. , stretching) from precursor processing, post treatment to final shape formation. Such deformation process is accompanied by multi-scale and multi-stage structural evolutions due to the complex hierarchical structures of crys- tallized polymers. These structural evolutions control over essential physical properties of semicrystalline polymers, which can be further developed towards high-performance industrial materials. A profound understanding of associated mechanisms is the critical key to interpret the complicated deformation pro- cess and to optimize the practical performances of polymer materials. The past reviews have more or less focused on one aspect of deformation while the multi-scale vision is lacking. Herein, this review brings a comprehensive presentation of strain-induced structural mechanics of crystallized polymers based on a multi-scale, multi-stage standpoint from the initiation of plasticity until failure. Important structural changes and associated mechanisms during the whole deformation process are systematically summa- rized, with particular attention paid to the crystal phase transition and crystal morphology evolution. Besides, the relationships between resulted microstructures and the essential end-use properties of crys- tallized polymers as well as their performances as common industrial materials are discussed. By summa- rizing the recent processes, this review is hoped to open up more aventunes for developing deformation- inspired sophisticated materials facing broader and interdisciplinary application fields.
- [来源：中国聚合物网]