Phase segregation behavior in PE/DOP blends and glass-transition temperatures of polyethylene
Article first published online: 24 OCT 2001
Copyright © 2001 John Wiley & Sons, Inc.
Journal of Applied Polymer Science
Volume 82, Issue 14, pages 3591–3601, 27 December 2001
How to Cite
Shieh, Y.-T. and Liu, C.-M. (2001), Phase segregation behavior in PE/DOP blends and glass-transition temperatures of polyethylene. J. Appl. Polym. Sci., 82: 3591–3601. doi: 10.1002/app.2221
- Issue published online: 24 OCT 2001
- Article first published online: 24 OCT 2001
- Manuscript Accepted: 16 MAR 2001
- Manuscript Received: 21 DEC 2000
- National Science Council of Republic of China. Grant Number: NSC89-2216-E-224-008.
- phase segregation;
- glass-transition temperature
Phase segregation behavior in PEs/DOP blends, interactions between PEs and DOP, and glass-relaxation transitions of PEs were investigated. FTIR, DSC, and TGA data demonstrated that molecular interactions were present between PEs and DOP. DMA data demonstrated that pure PEs each (except HDPE) exhibited two loss maxima at about −20 and −120°C but the PEs/DOP blends (including the HDPE/DOP blend) yielded one new loss maximum at about −60°C. The glass-relaxation transitions corresponding to the three loss maxima on the DMA curves were designated α (−20°C), β (−60°C), and γ (−120°C) transitions and were attributed to the relaxation of the amorphous phases in the interlamellar, interfibrillar, and interspherulitic regions, respectively, based on DMA, WAXD, SAXS, and POM measurements. The controversial Tg values of PEs and their origin were thus clarified in this study. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 82: 3591–3601, 2001