Investigations of the Processing-Structure-Property Relationships of Isotactic Poly(4-Methyl-1-Pentene) Tubular Extruded Films

Abstract

An investigation was undertaken of the processing-structure-property relationships of two linear poly(4-methyl-1-pentene) resins (PMP) which differed in molecular weight(Mw). This was done by characterizing tubular films (BUR = 1) extruded at two processing conditions, with specific attention being focused upon the morphological results and the crystal orientation as a function of Mw. Carreau-Yasuda analysis of oscillatory shear data was utilized to evaluate the melt-flow behavior of the two resins. Atomic force microscopy and wide-angle X-ray scattering were utilized to study the morphology of the final films, which was shown to be a stacked lamellar structure for both resins. The Mw and melt-extrusion conditions affected the orientation state and the nature of the stacking, planar or twisted. It was concluded that both extrusion stress and the relaxation behavior of the polymer melt are critical in determining the orientation/structural features of the extruded PMP films.

Keywords

molecular weight Carreau-Yasuda analysis shear poly(4-methyl-1-pentene) tubular film extrusion stress relaxation extrusion lamellar structure orientation processing conditions

References

1. Aggarwal, S. L. , Tilley, G. P. , Sweeting, O. J. 1959, J. Appl. Polym. Sci., 1:91.

2. Keller, A. , Machin, M. J. 1967, J. Macromol. Sci., B1(1):41.

3. Maddams, W. F. , Preedy, J. E. 1978, J. Appl. Polym. Sci., 22:2721.

1997, Erattum, 38(6):1503.

5. Yu, T. H. , Wilkes, G. L. 1996, J. Rheology, 40(6):1079.

6. Misra, S. , Lu, F. M. , Spruiell, J. E. , Richeson, G. C. 1995, J. Appl. Polym. Sci., 56:1761.

7. Spruiell, J. E. , White, J. L. 1975, Polym. Eng. Sci., 15:660.

8. Choi, K. , Spruiell, J. , White, J. 1980, J. Appl. Polym. Sci., 25:2777.

9. Hashimoto, T. , Todo, A. , Murakami, Y. 1977, J. Polym. Sci. Polym. Phys. Ed., 15:501.

10.

10. Prasad, A., Shroff, R., Rane, S., Beaucage, G., submitted for publication.

11.

11. Private Communication with K. Jordens of Eastman Chemical Company.

12.

12. Bashir, Z. , Odell, J. A. , Keller, A. 1986, J. Mater. Sci., 22:3993.

13.

13. Keller, A. , Kolnaar, J. W. H. 1993, Progress in Colloid and Polym. Sci., 92:81.

14.

14. Johnson, M. B. , Wilkes, G. L. , Sukadia, A. M. , Rohlfing, D. C. J. Appl. Polym. Sci., in press.

15.

15. Bashir, Z. , Odell, J. A. , Keller, A. 1986, J. Mater. Sci., 22:3993.

16.

16. Graessley, W. W. 1974, Adv. Polym. Sci., 16:1.

17.

17. Wilkes, G. L. 1981, J. Chem. Education, 58:880.

18.

18. Private Communication with Celgard Corporation LLC.

19.

19. Graessley, W. W. 1967, J. Chem. Phys., 47(6):1942.

20.

20. Janzen, J. , Colby, R.H. , J. Mol. Struct., in press.

21.

21. Hieber, C.A. , Chiang, H.H. 1989, Rheol. Acta, 28:321.

22.

22. Hieber, C.A. , Chiang, H.H. 1992, Polym. Eng. Sci., 32:931.

23.

23. Hermans, P. H. , Hermans, J. J. , Vermaas, D. , Weidinger, A. 1947, J. Polym. Sci., 3:1.

24.

24. Natta, G. , Corradini, P. , Bassi, I. W. 1955, R. C. Accad. Naz. Lincei, 19:404.

25.

25. Frank, F. C. , Keller, A. , O'Connor, A. 1959, Philos. Mag., 4:200.

26.

26. Keller, A. 1957, Phil. Mag., 2:1171.

27.

27. Zoller, P. 1977, J. Appl. Polym. Sci., 21:129.

28.

28. Kusanagi, H. , Takase, M. , Chatani, Y. , Takodoro, H. 1978, J. Polym. Sci., Polym. Phys. Ed., 16:131.

29.

29. Choi, C. H. , White, J. L. , Intern. Polym. Processing: Fibers and Films, Hanser Publishers, Munich, 1998.

30.

30. Choi, C., White, J. 1997, ANTEC preprints, 228, 2011.

31.

31. Stein, R. S. , “The X-ray Diffraction, Birefringence, and Infrared Dichroism of Stretched Polyethylene. II. Generalized Uniaxial Crystal Orientation,” J. Polym. Sci., 31:327, (1958).

32.

32. Stein, R. S. , “Optical Methods of Characterizing High Polymers,” Newer Methods in Polymer Characterization, Chap. IV, Wiley-Interscience, New York, (1964).

33.

33. Karasz, F. E. , Bair, H. E. , O’Reilly, J. M. 1967, Polymer, 8:547.

34.

34. Charlet, G. , Delmas, G. 1988, J. Polym. Sci., Poym. Phys. Ed., 26:1111.

35.

35. Charlet, Ph.D. Thesis, McGill Univ., Dept. Chem., Montreal, Canada, 1982.

36.

36. Private Communication with A. Keller.

37.

37. Keller, A. , Kolnaar, H. , “Materials Science and Technology A Comprehensive Treatment,” Chpt. 4, pgs. 189-268, John Wiley and Sons, 1997.

38.

38. Sprague, B. S. 1979, J. Macromol. Sci. Phys., B8(1-2):157.

39.

39. Johnson, M. B. , Wilkes, G. L. , J. Appl. Polym. Sci., in press.