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研究生： 陳孟歆
Chen, Meng-Hsin
論文名稱： PEO/黏土奈米複合材料之晶體取向性研究
Crystal Orientation of Poly(ethylene oxide) in Poly(ethylene oxide)/Clay Nanocomposites
指導教授： 陳信龍
Chen, Hsin-Lung
口試委員:
學位類別： 碩士
Master
系所名稱： 工學院 - 化學工程學系
Department of Chemical Engineering
論文出版年： 2009
畢業學年度： 97
語文別： 英文
論文頁數： 99
中文關鍵詞： PEO/黏土奈米複合材料 、PEO晶體取向性
相關次數： 點閱：2  下載：0 
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    • Polymer/clay nanocomposites have attracted much attention due to their unique mechanical, electrical, optical, and thermal properties. In this study, we have prepared highly oriented PEO/clay nanocomposite films in which the clay platelets stacked perpendicular to film surface. The composite films with different contents of clay were prepared by solvent casting with different solvent removal rates. The orientation of PEO crystal with respect to the clay platelets was then investigated by synchrotron wide angle x-ray scattering (WAXS). From the 2-D WAXS patterns, homeotropic orientation of PEO crystals was observed in the composites prepared by slow solvent evaporation irrespective of clay content and crystallization temperatures. In the films prepared by fast solvent removal, the PEO crystals were found to display homogeneous orientation preferentially. Subsequent shearing treatment of the composite films may shift the homogeneous orientation to homeotropic state.

    Abstract 1 Index 2 Table Index 4 Figure Index 6 Chapter 1 Introduction 13 1.1 Structure of clay 13 1.2 Polymer-clay nanocomposites 15 1.2-1 Preparation of polymer-clay nanocomposites 17 1.2-2 Properties and applications of polymer-clay nanocomposites 22 1.3 PEO-clay nanocomposites 30 1.4 Identification of PEO crystal orientation in PEO/clay nanocomposite 43 1.5 Motivation and objective of the present study 45 Chapter 2 Experimental section 46 2.1 Materials 46 2.2 Nanocomposites preparation 46 2.3 Crystallization history of the nanocomposites isothermal crystallization of unsheared composite films 47 2.4 Characterizations 48 Chapter 3 Results and discussion 49 3.1 Intercalation of PEO into clay gallery 49 3.2 A large-length-scale structure of the nanocomposite films 51 3.3 Clay otrirentation in nanocomposite films 58 3.4 Crystal orientations in PEO/clay nanocomposite films crystallized at different temperatures 62 3.5 Crystal orientation in sheared F-series nanocomposite films 80 3.6 Crystallization kinetics of PEO in PEO/clay nanocomposite films 92 Chapter 4 Conclusion 96 Reference 98

    1. D. W. Schaefer, Macromolecules 2007,40, 8501-8516
    2. P. Dubois, Mater. Sci. Eng. 2000, 28, 1-63
    3. J. M. Yeh, J. Appl. Polym. Sci. 2004, 94, 1936–1946
    4. W. J. Work, Pure. Appl. Chem. 2004, 76, 1985-2007
    5. Y. Kojima, J. Appl. Polym. Sci. 1993, 49, 1259-1264
    6. T. L. Wang, J. Appl. Polym. Sci. 2007, 104, 4135–4143
    7. M. Okamoto, Polymer 2000, 41, 3887-38901
    8. L. M. Stadtmueller, Polymer 2005, 46, 9574–9584
    9. M. R. Karim, J. Polym. Sci., Part B: Polym. Phys. 2008, 46, 2279–2285
    10. L. Liu, J. Appl. Polym. Sci. 1999, 71, 1133-1138
    11. G. P. Simon, Macromolecules 2005, 38, 1744-1751
    12. G. Groeninckx, Polymer 2005, 46, 11359-11365
    13. M. E. Galvin, Macromolecules 2006, 39, 1864-1871
    14. H. J. Choi, Chem. Mater. 2002, 14, 1989-1994
    15. G. Floudas, Chem. Mater. 2004, 16, 1686-1692
    16. L. Zhu, Langmuir 2005, 21, 5672-5676
    17. N. Ogata, J. Appl. Polym. Sci. 1997, 66, 573-581
    18. G. Schmidt, Polymer 2006, 47, 7339–7348
    19. G. Schmidt, Macromol. Rapid Commun. 2005, 26, 143–149
    20. E. T. Samulski, Polymer 2006, 47, 663-671
    21. M. Okamoto, Polymer 2001, 42, 9633-9640
    22. M. Okamoto, Macromolecules 2002, 35, 2042-2049
    23. Y. Q. Rao, Macromolecules 2008, 41, 935-941
    24. S. Z. D. Cheng, J. Am. Chem. Soc. 2000, 122, 5957-5967
    25. S. Z. D. Cheng, Polymer 2001, 42, 5829-5839
    26. S. Z. D. Cheng, Macromolecules 2004, 37, 3689-3698
    27. S. Z. D. Cheng, Macromolecules 2001, 34, 1244-1251
    28. E. Manias, Chem. Mater. 2003, 15, 844-849
    29. G. Schmidt, Macromolecules 2002, 35, 4725-4732
    30. M. M. Malwitz, J. Polym. Sci., Part B: Polym. Phys. 2003, 41, 3237–3248
    31. G. Schmidt, Phys. Chem. Chem. Phys. 2004, 6, 2977-2982
    32. L. Zhu, Polymer 2004, 45, 8181-8193
    33. P. Debye, J. Appl. Phys. 1949, 20, 518-525
    34. P. Debye, H. R. Anderson Jr., H. Brumberger, J. Appl. Phys. 1957, 28, 679-683
    35. W. J. Ruland, J. Appl. Cryst. 1971, 4, 444-451
    36. P. Jannasch, Polymer 2005, 46, 7334–7345
    37. H. W. chen, J. Polym. Sci., Part B: Polym. Phys. 2002, 40, 1342-1353
    38. R.A. Vaia, Polymer 2001, 42, 1621-1631
    39. T. M. Wu, Polym. Eng. Sci. 2002, 42, 1141-1150
    40. P. Maiti, Polym. Eng. Sci. 2002, 42, 1864-1871
    41. D. R. Paul, Polymer 2003, 44, 3945-3961
    42. G. Groeninckx, Polymer 2006, 47, 1630-1639
    43. M. M. Malwitz, J. Polym. Sci., Part B: Polym. Phys. 2003, 41, 3237-3248
    44. C. Harrats, Macromol. Rapid Commun. 2008, 29, 14–26

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