A Prerequisite of the Poly(ε‐Caprolactone) Self‐Induced Nanohybrid Shish–Kebab Structure Formation: An Ordered Crystal Lamellae Orientation Morphology of Fibers. Issue 24 (23rd November 2017)

• Record Type: Journal Article
• Authors: Wang, Xiaofeng; Gao, Yanhong; Xu, Yiyang; Li, Xuyan; Jiang, Jing; Hou, Jianhua; Han, WenJuan; Li, Qian; Shen, Changyu
• Is Part Of: Macromolecular chemistry and physics. Volume 218:Issue 24(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-11-23
• Subjects: crystallization -- fibers -- lattice matching -- nanohybrid shish–kebab -- poly(ε‐caprolactone); Polymers -- Periodicals; Polymerization -- Periodicals; Synthetic products -- Periodicals; Macromolecules -- Periodicals; 547.7
• DOI: 10.1002/macp.201700414
• Languages: English
• ISSNs: 1022-1352

Abstract

Abstract: The shish–kebab structure has been extensively applied in many fields; however, the formation mechanism is still an open question. In this study, different electrospun poly(ε‐caprolactone) (PCL) fibers are applied as the shish material in a self‐induced crystallization process, and two different self‐induced crystal structures are obtained. The PCL fibers with an ordered crystalline morphology lead to an induced crystalline structure with the crystal lamellae perpendicular to the fiber axis. However, the PCL fibers with a disordered structure induce a complicated (less ordered) crystalline lamellae morphology. Investigation of the surface crystalline structure reveals that the self‐induced nanohybrid shish–kebab (SINSK) structure follows a lattice matching and epitaxial growth mechanism. The internal crystalline structure of PCL nanofibers plays a dominant role in the formation of the SINSK structure. This study may prove helpful in screening materials for formation of the SINSK structure. Abstract : The crystalline morphology of poly(ε‐caprolactone) fiber regulates the crystalline structure in self‐induced crystallization. An ordered internal structure induces the formation of a shish–kebab structure, whereas a disordered internal structure induces a coral‐surface‐like structure. Lattice matching nucleation and epitaxial growth play dominant roles in the crystallization process. This study might be helpful to create decoration of other polymer nanofibers.