Viscoelastic coalescence of thermotropic liquid crystalline polymers: The role of transient rheology

Journal of Rheology

Volumn 49, Issue 6, 2005, Pages 1159-1175

  Scribben, Eric ^a   Eberle, Aaron P R ^a   Baird, Donald G ^a  

^a State University   (United States)

Author keywords

Coalescence; Liquid crystalline polymer

Indexed keywords

COALESCENCES; EQUILIBRIUM COMPLIANCE VALUES; STEADY STATE STRESSES; TRANSIENT RHEOLOGY;

COALESCENCE; MATHEMATICAL MODELS; NEWTONIAN LIQUIDS; RHEOLOGY; SURFACE TENSION; THERMOTROPIC LIQUID CRYSTALS; VISCOELASTICITY; VISCOUS FLOW;

LIQUID CRYSTAL POLYMERS;

EID: 33749608980     PISSN: 01486055     EISSN: None     Source Type: Journal    
DOI: 10.1122/1.2039827     Document Type: Article

References (29)

1. Beekmans, F., A. D. Gotsis, and B. Norder, " Influence of the flow history on stress growth and structure changes in the thermotropic liquid crystalline polymer Vectra B950., " Rheol. Acta 36, 82-95 (1997).
2. Bellehumeur, C. T., M. Kontopoulou, and J. Vlachopoulos, " The role of viscoelasticity in polymer sintering., " Rheol. Acta 37, 270-278 (1998).
3. Bird, R. B., R. C. Armstrong, and O. Hassager, Dynamics of Polymeric Liquids, Volume 1 Fluid Mechanics (Wiley, New York, 1987).
4. Done, D. D., " Studies on the rheology and morphology of thermotropic liquid crystalline polymers., " Ph.D. dissertation, Virginia Polytechnic Institute and State University, Blacksburg, VA, 1987.
5. Eshelby, J. D., "Discussion" in Paper by A. J. Shaler, " Seminar on the kinetics of sintering., " Trans. AIME 185, 806-807 (1949).
6. Frenkel, J., " Viscous flow of crystalline bodies under the action of surface tension., " J. Phys. (Moscow) 9, 385-391 (1945).
7. Gotsis, A. D., and M. A. Odriozola, " Extensional viscosity of a thermotropic liquid crystalline polymer., " J. Rheol. 44, 1205-1223 (2000).
8. Hui, C. Y., J. M. Baney, and E. J. Kramer, " Contact mechanics and adhesion of viscoelastic spheres., " Langmuir 14, 6570-6578 (1998).
9. Jagota, A., and P. R. Dawson, " Micromechanical modeling of powder compacts. I. Unit problems for sintering and traction induced deformation., " Acta Metall. 36, 2551-2561 (1988).
10. Johnson, K. L., K. Kendall, and A. D. Roberts, " Surface energy and the contact of elastic solids., " Proc. R. Soc. London, Ser. A 324, 301-313 (1971).
11. Kuczynski, G. C., B. Neuville, and A. D. Roberts, " Sintering of poly(methyl methacrylate., " J. Appl. Polym. Sci. 14, 2069-2077 (1970).
12. Lin, Y. G., and H. H. Winter, " Structural relaxation behavior of a thermotropic liquid crystal aromatic copolyester in the super-cooled liquid state., " Macromolecules 21, 2439-2452 (1988).
13. Lin, Y. G., and H. H. Winter, " Formation of high melting crystal in a thermotropic aromatic copolyester., " Macromolecules 24, 2877-2892 (1991).
14. Lin, Y. Y., C. Y. Hui, and A. Jagota, " The role of viscoelastic adhesive contact in the sintering of polymeric particles., " J. Colloid Interface Sci. 237, 267-282 (2001).
15. Macosko, C. W., Rheology Principles, Measurements, and Applications (VCH, New York, 1994).
16. Martinez-Herrera, J. I., and J. J. Derby, " Viscous sintering of spherical particles via finite element analysis., " J. Am. Chem. Soc. 78, 645-665 (1995).
17. Mazur, S., " Coalescence of polymer particles., " in Polymer Powder Technology, edited by, M. Narkis, and, N. Rosenzweig, (Wiley, New York, 1995), Chap..
18. Mazur, S., and D. J. Plazek, " Viscoelastic effects in the coalescence of polymer particles., " Prog. Org. Coat. 24, 225-236 (1994).
19. Onogi, S., and T. Asada, " Rheology and rheo-optics of polymer liquid crystal., " in Rheology edited by, G. Astarita, G. Marrucci, and, L. Nicholais, (Plenum, New York, 1980), Vol. 1, pp. 127-147.
20. Padday, J. F., " Part II. The measurement of surface tension., " in Surface and Colloid Science, edited by, E. Matijević, (Wiley Interscience, New York, 1969), Vol. 1.
21. Pokluda, O., C. T. Bellehumeur, and J. Vlachopoulos, " Modification of Frenkel's model for sintering., " AIChE J. 43, 3253-3256 (1997).
22. Rosenweig, N., and M. Narkis, " Sintering rheology of amorphous polymers., " Polym. Eng. Sci. 21, 1167-1170 (1981).
23. Schapery, R. A., " Theory of crack initiation and growth in viscoelastic media. I. Theoretical development., " Int. J. Fract. 11, 141-159 (1975).
24. Scribben, E., and D. G. Baird, " Sintering of thermotropic liquid crystalline polymers., " Annu. Tech. Conf.-Soc. Plast. Eng. 60, 1240-1244 (2002).
25. Scribben, E., " The selection of thermotropic liquid crystalline polymers for rotational molding., " Ph.D. dissertation, Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA, 2004.
26. Ternet, D. J., R. G. Larson, and L. G. Leal, " Transient director patterns upon start-up of nematic liquid crystals (an explanation for stress oscillation damping)., " Rheol. Acta 40, 307-316 (2001).
27. "Vectra liquid crystal polymer (LCP)," Ticona, Summit, NJ, 2002.
28. Wilson, T. S., " The rheology and structure of thermotropic liquid crystalline polymers in extensional flow., " Ph.D. dissertation, Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA, 1991.
29. Wissbrun, K. F., " Rheology of rod-like polymers in the liquid crystalline state., " J. Rheol. 25, 619-662 (1981).