Banded Crystalline Spherulites in Polymers and Organic Compounds: Interior Lamellar Structures Correlating with Top-Surface Topology
- *Corresponding Author :
- Eamor M Woo
Department of Chemical Engineering
National Cheng Kung University, Tainan, 701-01, Taiwan
Tel: +886 6 275-7575 Ex. 62670
Fax: +886 6 234-4496
E-mail: [email protected]
Received date: April 23, 2015; Accepted date: April 16, 2015; Published date: April 22, 2015
Citation: Woo EM, Lugito G, Yang CE, Chang SM, Lee LT (2015) Banded Crystalline Spherulites in Polymers and Organic Compounds: Interior Lamellar Structures Correlating with Top-Surface Topology. J Adv Chem Eng 5: 120. doi:10.4172/2090-4568.1000120
Copyright: © 2015 Woo EM et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
By using several different polymers and compounds, organics or inorganic, low-molecular-weight or highmolecular- weight, this study has proven that they can be packed into concentric ring bands, usually circular, but other shapes like hexagons or flower-like petals can also be possible. With these traits taken into consideration, it is difficult to generalize the ring bands in spherulites to a single cause of lamellae twist/spiral. Instead, exposure of lamellae underneath the top layers beyond thin films becomes essential for shedding new light on all these intricately complex issues. The novel approaches in this study circumvent such limitation by interior dissection of PEA, which clearly reveals that no continuous spiraling twist, as the cross sections show a corrugated-board structure with layers resembling a peel-able onion, where each radially oriented layer is sandwiched with a tangential layer of lamellae.