STRUCTURE AND PROPERTIES OF POLY(BUTYLENE TEREPHTHALATE) AND POLY(BUTYLENE TEREPHTHALATE)-POLY(TETRA METHYLENE OXIDE) BLOCK COPOLYMER BLENDS WITH CHAIN EXTENDER ADDITIVES
Abstract
The effect of diisocyanate chain extender (CE) on the rheological, and relaxation properties, as well as on the molecular weight and crystallizability, of poly(butylene terephthalate) (PBT) and thermoplastic polyester elastomer (TPEE) blends with the different-phase structure has been studied. It has been showed that CE in the amount of 0.2 up to 1.25 % leads to an increase in polyesters melt and solutions viscosity because of chain extending and cross-linking reactions. Values of high and low flow limits increase with increasing the CE concentration regardless of the phase structure of blends. It is revealed that СЕ decreases the polyesters melt-crystallization temperature; the crystallinity reduces simultaneously, which is indicative of the crystallization deceleration owing to a growth of the molecular weight.
About the Authors
V. V. SHEVCHENKO
V. A. Belyi Metal-Polymer Research Institute of the National Academy of Sciences of Belarus, Gomel
Belarus
Belarus
S. S. PESETSKII
V. A. Belyi Metal-Polymer Research Institute of the National Academy of Sciences of Belarus, Gomel
Belarus
Belarus
References
1. Gallucci, R. R. Poly (Butylene Terephthalate) / R. R. Gallucci, B. R. Patel // Modern Polyesters: Chemistry and Technology of Polyesters and Copolyesters / ed. J. Scheirs, T. E. Long. – Chichester, UK: John Wiley & Sons, Ltd, 2003.
2. Adams, R. K. Thermoplastic polyester elastomers / R. K. Adams, G. K. Hoescheble // Thermoplastic elastomers / ed. N. R. Legge, G. Holden, Schroeder. – Vienna; New York: Hanser Publishers, 1987. – P. 163–196.
3. Можейко, Ю. М. Полиэфирные термоэластопласты и конструкционные материалы на их основе: получение, структура, свойства, применение: автореф. дис. … канд. техн. наук / Ю. М. Можейко. – Минск, 2005.
4. Inata, H. Chain extenders for polyester. I. Addition type chain extenders reactive with carboxyl end groups of polyesters / H. Inata, S. Matsumura // J. Appl. Polym. Sci. – 1986. – Vol. 30, N 8. – P. 3325–3337.
5. Inata, H. Chain extenders for polyester. II. Reactivities of carboxyladdition-type chain extenders; biscyclic-imino-ethers / H. Inata, S. Matsumura // J. Appl. Polym. Sci. – 1986. – Vol. 32, N 5. – P. 5193–5202.
6. Inata, H. Chain extenders for polyesters. III. Addition-type nitrogen-containing chain extenders reactive with hydroxyl end groups of polyesters / H. Inata, S. Matsumura // J. Appl. Polym. Sci. – 1986. – Vol. 32, N 4. – P. 4581–4594.
7. Inata, H. Chain extenders for polyesters. IV. Properties of the polyesters chain-extended by 2,2′-bis(2-oxazoline) / H. Inata, S. Matsumura // J. Appl. Polym. Sci. – 1986. – Vol. 33, N 8. – P. 3069–3079.
8. Песецкий, С. С. Макромолекулярные превращения в расплавах полиалкилентерефталатов и реакционная компатибилизация полиэфирных материалов (обзор) / С. С. Песецкий, В. В. Шевченко, В. В. Дубровский // Материалы. Технологии. Инструменты. – 2013. – Т. 18, № 3. – С. 51–80.
9. Chain extension of poly(ethylene terephthalate) with bisphenol-A dicyanate / Y. Zhang [et al.] // J. Appl. Polym. Sci. – 2010. – Vol. 117, N 4. – P. 2003–2008.
10. Agabekov, V. V. Effect of nanodisperse carbon fillers, and isocyanate chain extender on structure and properties of poly(ethylene terephthalate) / V. V. Agabekov, V. V. Golubovich, S. S. Pesetskii // J. of Nanomaterials. – 2012. – Vol. 2012. – Article ID 870307.
11. Guo, B. Chain extension of poly(butylene terephthalate) by reactive extrusion / B. Guo, C. Chan // J. Appl. Polym. Sci. – 1999. – Vol. 71, N 11. – P. 1827–1834.
12. Reactive extrusion of recycled poly(ethylene terephthalate) with polycarbonate by addition of chain extender / X. Tang [et al.] // J. Appl. Polym. Sci. – 2007. – Vol. 104, N 4. – P. 2602–2607.
13. Enhancement of physical properties of thermoplastic polyether-ester elastomer by reactive extrusion with chain extender / T. Lee [et al.] // Polym. Bull. – 2011. – Vol. 66, N 7. – P. 979–990.
14. PET/PC blends: effect of chain extender and impact strength modifier on their structure and properties / S. S. Pesetskii [et al.] // J. Appl. Polym. Sci. – 2011. – Vol. 119, N 1. – P. 225–234.
15. Pesetskii, S. S. Compatibility, adhesional interaction of components, impact strength, and rheological behavior of polycarbonate/polycarbonate-siloxane block copolymer / S. S. Pesetskii, B. Jurkowski, V. N. Koval // J. Appl. Polym. Sci. – 2000. – Vol. 78, N 4. – P. 858–869.
Review
Views: 765
Email this article 