Abstract
Out of the three methods of plastic waste recycling, that is, polymer recycling, feedstock recycling, and energy recovery, the former is the most desirable. The polymer recycling usually involves: segregation, washing, shredding and extruding. During melt-extrusion, the material undergoes devolatilization, stabilization, compatibilization, alloying, filtering and pelletization. The alloying, blending, and compounding are the basic ABC processing steps of the technology for polymer recycling. Hence, this chapter summarizes these elements of blending technology that are pertinent for polymer recycling in three parts: (i) thermodynamics of polymer blends, (ii) flow behavior of polymers and their blends, and (iii) compounding and processing of polymer blends.
The first part provides a brief outline of the principal aspects of the thermodynamics (miscibility and interfacial properties) and compatibilization (either by addition of a compatibilizer, by reactive or mechanical compatibilization). The second part focuses on melt rheology — the flow behavior of multicomponent, polymeric systems (including the fundamental principles of the morphology modeling). The third part summarizes the basics of mixing, blending, alloying, and compounding methods, as well as it outlines the principles of morphology modeling. Since compatibilization and development of blends’ morphology are topics of other chapters in this book, these topics are only outlines to provide proper image of the technology.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Utracki, L. A. (1989) Polymer Alloys and Blends, Hanser Verlag, Munich.
Tompa, H. (1956) Polymer Solutions, Butterworths Sci. Pub., London.
Nies, E., Stroeks, A., Simha, R., and Jain, R. K. (1990) Colloid Polym. Sci. 268, 731–43.
Helfand, E., and Tagami, Y. (1971) “Theory of the interface between immiscible polymers,” J. Polym. Sci., Polym. Letters, 9, 741.
Helfand, E., and Sapse, A. M. (1975) “Theory of polymer-polymer interferes;’ J. Chem. Phys., 62, 1327.
Helfand, E., and Wasserman, Z. R. (1976) “Block copolymer theory,” Macromolecules, 9, 879.
Utracki, L. A. (ed) (1994) Encyclopaedic Dictionary of Commercial Polymer Blends, ChemTec Pub., Toronto.
Yukioka, S., and Inoue, T. (1994) “Ellipsometric analysis on the in situ reactive compatibilization of immiscible polymer blends,” Polymer, 35, 1182–86.
Noolandi, J. (1984) “Recent advances in the theory of polymeric alloys,” Polym. Eng. Sci., 24, 70–78.
Vilgis, T. A., and Noolandi, J. (1988) “On the compatibilization of polymer blends,” Makromol. Chem., Makromol. Symp., 16, 225–234.
Leibler, L. (1988) “ Emulsifying effects of block copolymers in incompatible polymer blends,” Makromol. Chem., Macromol, Symp., 16, 1–18.
Tang, T., and Huang, B. (1994) “ Interfacial behavior of compallbl1ize s in polymer blends, ” Polymer, 35, 281–285.
Ajji, A., and Utracki, L. A. (1996) “Interphase and compatibilization of polymer blends,” Polym. Eng. Sci., 36, 1574–85.
Anastasiadis, S. H. (1988) “Interfacial tension of immiscible polymer blends,” PhD thesis, U. Princeton.
Luciani, A. Champagne, M. F., and Utracki, L. A. (1997) “Interfacial Tension Determination by Retraction of an Ellipsoid”, J. Polym. Sci. B, Polym. Phys. Ed., 35, 1393–1403.
Fayt, R., Jérôme, R., and Teyssié, Ph. (1986) “Molecular design of multicomponent polymeric systems. 13,” Makromol. Chem., 187, 837–852.
Vesely, D. (1996) “Micro structural characterization of polymer blends,” Polym. Eng. Sci., 36, 1586–93.
Nadkarni, V. M., and Jog, J. P. (1991) “Crystallization behavior in polymer blends,” in Two-Phase Polymer Systems, Utracki, L. A., Ed., Hanser Verlag, Munich.
Porter, R. S., and Wang, L.-H. (1992) “Compatibility and transesterification in binary polymer blends,” Polymer, 33, 2019–30.
Yoon, H. Feng, Y. Qiu, Y., and Han, C. C. (1994) “Structural stabilization of phase separating PC/polyester blends through interfacial modification by transesterification reaction,” J. Polym. Sri., Polym. Phys. Ed.,32 1485–92.
Golovoy, A., Cheung, M. F., Carduner, K. R., and Rokosz, M. J. (1989) “Control of trensesterification in polyester blend,” Polym. Eng. Sci., 29, 1226–31.
Pillon, L. Z., and Utracki, L. A. (1984) “Compatibilization of polyester/polyamide blends via catalytic ester-amide interchange reaction,” Polym. Eng. Sci., 4, 1300 1305.
Utracki, L. A. (1997) Commercial Polymer Blends, Chapman & Hall, London.
Utracki, L. A. (1995) “The Rheology of Multiphase Systems,” in Rheological Fundamentals of Polymer Processing, Covers, J. A., AgasKint, J. F., Diogo, A. C, Vlachopoulos, and Walteas,K,Fi c,KluNer Academic Pub.s,Dordrecht
Lyngaae-Jorgensen, J., and Utracki, L. A. (1991) “Dual phase continuity in polymer blends,” Makromol. Chem., Macromol. Symp., 48/49, 189–209.
Utracki, L. A. (1991) “On the viscosity-concentration dependence of immiscible polymer blends,” J. Rheol., 35, 1615–1637.
Bousmina, M., Palierne, J. F., and Utracki, L. A. (1997) “Modeling of Polymer Blends’ Behavior During Capillary Flow,” Polym. Eng. Sci.,in press.
Valenza, A., Lyngaae-Jorgensen, J., Utracki, L. A., and Sammut, P. (1991) “Rheological Characterization of Polystyrene/Polymethylmethacrylate Blends,” Polym. Networks Blends, 1, 79–92.
Utracki, L. A., and Sammut, P. (1990) “Rheology of polycarbonate/linear low density polyethylene blends,” Polym. Eng. Sci., 30, 1027–40.
Elemans, P. H. M. (1989) “Modeling of the processing of incompatible polymer blends,” PhD thesis, Technische Universiteit Eindhoven.
Palierne, J. F. (1990) “Linear rheology of viscoelastic emulsions with interfacial tension,” Rheol. Acta, 29, 204–214.
Riemann, R.-E., Cantow, H.-J., and Friedrich, C. (1996) “Rheological investigation of form relaxation and interface relaxation processes in polymer blends,” Polym. Bull., 36, 637–643.
Utracki, L. A., and Sammut, P. (1992) “Rheological Response of Polyamide/Polypropylene Blends,” Polym. Networks Blends, 2, 23–39; 85 93.
Laun, H. M., and Schuch, H. (1989) “Transient elongational viscosities and drawability of polymer melts,” J. Rheol., 33, 119–175.
Nishio, T., Sanada, T., and Higashi, K. (1992) “Flow behavior of interface structure controlled PP/PA alloys,” Sen-i Gakkaishi, 48, 446–456.
Delaby, I., Ernst, B., Germain, Y., and Muller, R. (1994) “Droplet deformation in polymer blends during uniaxial elongational flow,” J. Rheol., 38, 1705–20.
Erwin, L. (1991) “Laminar mixing,” in Mixing in Polymer Procemng, Rauwendaal, C., ed., M. Dekker,Inc.,NewYork.
Poitou, A., PhD thesis, École des Mines de Paris (1988).
Rauwendaal, C. (1986) Polymer Extrusion, Hanser Verlag, Munich.
Ottino, J. M. (1989) The Kinematics of Mixing: Stretching, Chaos and Transport, Cambridge U. Press, Cambridge.
Goettler, L. A. (1984) “Mechanical property enhancement in short-fiber composites through the control of fiber orientation during fabrication,” Polym. Compos., 5, 6071
Utracki, L. A., Luciani, A. (1996) “Mixing in Extensional Flow Field,” Intl. Plast. Eng. Techn., 2, 37–54.
Luciani, A., and Utracki, L. A. (1996) The Extensional Flow Mixer, EFM,“ Intern. Polymer Proces, 11, 299–309.
White, J. L. (1990) Twin Screw Extruder Technology and Principles, Hanser Verlag, Munich.
Tadmor, Z., Hold, P., and Valsamis, L. (1979) “A novel polymer processing machine theory and experimental results,” SPE Techn. Papers, 25, 193–211.
Patfoort, G. A. R., Belg. Pat., 833,543, 18 Mar 1976.
Shih, C.-K., Tynan, D. G., and Denelsbeck, D. A. (1991) “Rheological properties of multicomponent polymer system undergoing melting or softening during compounding,” Polym. Eng. Sci., 31, 1670–3.
Lindt, J. T. Polym. Eng. Sci.,21 1162 (1981).
Lindt, J. T., and Ghosh, A. K. (1992) “Fluid mechanics of the formation of polymer blends,” Polym. Eng. Sci., 32, 1802–13.
Utracki, L. A., and Shi, Z.- H. (1992) “Development of polymer blend morphology during compounding in a twin screw extruder. Part 1: A review,” Polym. Eng. Sci., 32, 1824–1833.
Shi, Z.- H., and Utracki, L. A. (1992) “Development of polymer blend morphology during compounding in a twin screw extruder. Part 2: Theoretical predictions of morphology development during extrusion,” Polym. Eng. Sci., 32, 1834–1845.
Bordereau, V., Shi, Z.- H., Utracki, L. A., Sammut, P., and Carrega, M. (1992) “Development of polymer blend morphology during compounding in a twin screw extruder. Part 3: Experimental procedures and preliminary results,” Polym. Eng. Sci., 32, 1846–1856.
Huneault, M. A., Shi, Z.-H., and Utracki, L. A. (1995) “Development of polymer blend morphology during compounding in a twin screw extruder. Part IV: A new computational model with coalescence”, Polym. Eng. Sci., 35, 115–127.
Delamare, L., and Vergnes, B. (1996) “Computation of the morphological changes of a polymer blend along a twin screw extruder ”, Polym. Eng. Sci., 36, 1685–93.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1998 Springer Science+Business Media Dordrecht
About this chapter
Cite this chapter
Utracki, L.A. (1998). Polymer Blends’ Technology for Plastics Recycling. In: Akovali, G., Bernardo, C.A., Leidner, J., Utracki, L.A., Xanthos, M. (eds) Frontiers in the Science and Technology of Polymer Recycling. NATO ASI Series, vol 351. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-1626-0_8
Download citation
DOI: https://doi.org/10.1007/978-94-017-1626-0_8
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-5074-8
Online ISBN: 978-94-017-1626-0
eBook Packages: Springer Book Archive