Journal article
Chain Orientation and Distribution in Ring-Banded Spherulites Formed in Poly(ester urethane) Multiblock Copolymer
Journal of polymer science. Part B, Polymer physics, v 48(5), pp 541-547
01 Mar 2010
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
A poly(ester urethane) multiblock copolymer containing poly(epsilon-caprolactone) glycol (PCL) soft segments gives ring-banded spherulite as crystallized from its melted film. Analysis based on polarized light microscopy and atomic force microcopy revealed that the ring-banded structures consist of alternate convex and concave bands as a consequence of rhythmic growth. These convex and concave bands, which are composed of flat-on and edge-on lamellae, show layered terrace-like and fibrillar morphology, respectively. The chain orientation and composition distribution in the ring-banded spherulites were further investigated using FTIR imaging. The convex bands are mainly PCL-rich domains with perpendicular chain orientation to the substrate, and the concave bands are urethane-rich domains, where the PCL chains are perpendicular to the radial growth directions of the spherulite but parallel to the film plane. The formation of different orientations in the convex and concave bands is attributed to the rhythmic growth behavior for the copolymers with composition distribution along the chains. (C) 2010 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 48: 541-547, 2010
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Details
- Title
- Chain Orientation and Distribution in Ring-Banded Spherulites Formed in Poly(ester urethane) Multiblock Copolymer
- Creators
- Wei Wang - Chinese Acad Sci, Grad Sch Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R ChinaYing Jin - Chinese Acad Sci, Grad Sch Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R ChinaXiaoniu Yang - Chinese Acad Sci, Grad Sch Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R ChinaZhaohui Su - Chinese Acad Sci, Grad Sch Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
- Publication Details
- Journal of polymer science. Part B, Polymer physics, v 48(5), pp 541-547
- Publisher
- Wiley
- Number of pages
- 7
- Grant note
- 20423003; 20774097; 50621302 / National Natural Science Foundation of China; National Natural Science Foundation of China (NSFC)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Neurobiology and Anatomy
- Web of Science ID
- WOS:000274939000006
- Scopus ID
- 2-s2.0-76649103339
- Other Identifier
- 991020545237404721
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- Web of Science research areas
- Polymer Science