期刊
MATERIALS LETTERS
卷 92, 期 -, 页码 334-337出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2012.10.121
关键词
Biodegradable polymers; Thick films; Extrusion; Microstructure; X-ray techniques
资金
- National Natural Science Foundation of China [50873094]
- SRF for ROCS, State Education Ministry
- Major Project in Public Interest of Henan Province [HNZB [2011] N91]
Cast films of poly(butylene succinate) (PBS) were prepared by extrusion followed by stretching using a chill roll. The effects of extrusion temperature and take-up speed on the microstructures of the PBS cast films were investigated by two-dimensional wide angle X-ray diffraction (2D-WAXD) and small angle X-ray scattering (2D-SAXS) techniques. It was found that the processing conditions had almost no influence on the degree of crystallinity and the long period of the lamellae of the films, whereas the orientations at both crystal and lamellar levels increased with increasing take-up speed and decreasing extrusion temperature. In addition, the 2D-SAXS patterns revealed the formation of the shish-kebab structure at a lower extrusion temperature and higher take-up speed. (C) 2012 Elsevier B.V. All rights reserved.
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