研究生: |
朱文亞 WEN-YAH CHU |
---|---|
論文名稱: |
聚己內酯結晶機制之研究 Crystallization Mechanism of Polycaprolactone |
指導教授: |
洪伯達
Po-Da Hong |
口試委員: |
王英靖
Ing-Jing Wang 陳志堅 Jyh-Chien Chen 廖文彬 Wen-Bin Liau |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 材料科學與工程系 Department of Materials Science and Engineering |
論文出版年: | 2008 |
畢業學年度: | 96 |
語文別: | 中文 |
論文頁數: | 49 |
中文關鍵詞: | 球晶 、結晶動力學 、聚己內酯 、亞穩定態 |
外文關鍵詞: | Spherulite, Crystallization kinetics, Polycaprolactone ( PCL ), Metastable melt |
相關次數: | 點閱:204 下載:12 |
分享至: |
查詢本校圖書館目錄 查詢臺灣博碩士論文知識加值系統 勘誤回報 |
此篇論文,基本應用示差熱分析儀和偏光顯微鏡將就高分子材料Polycaprolactone(PCL)於等溫結晶化之結晶與熔融行為進行分子量效應之探討。其中,討論到線性與支化PCL於等溫結晶化動力學上之差異。在學理上根據Avrami結晶動力論,並且對照Lauritzen-Hoffman的二次成核理論,以結晶動力學速率論的觀點,分析在不同結晶溫度對應於分子量的結晶生長速率。最後,也對於結晶化後期之運動方程的非線性行為做討論,發現在亞穩態下當結晶條件的變化致使結晶形貌呈現出形形色色的樣態。
In this study, the effects of molecular weight of Polycaprolactone (PCL) on crystallization and melting behaviors were first investigated using differential scanning calorimetry (DSC) and polarized optical microscopy (POM). Then, the differences in isothermal crystallization kinetics between linear and three-arm PCLs were also discussed in this work. The crystallization exotherms measured using DSC were analyzed using a modified Avrami equation. In contrast to the conventional Lauritzen -Hoffman analysis which was based on the growth rates measured at different crystallization temperatures (Tc) for a MW. Finally, The non-linear behavior in the late stage of crystallization was also discussed as well in this study. The morphology of PCL crystallites exhibits various patterns as the crystallization condition changes under metastable state.
1. W. Ostwald. J. Z. Phys. Chem., 22, 259, 1897.
2. S. Z. D. Cheng, A. Keller. Annu. Rev. Mater Sci., 28, 533, 1998.
3. P. G. de Gennes. J. Polym. Lett., 15, 623, 1977.
4. G. Strobl, et al. Process in Understand of Polymer Crystallization, Springer, 2007.
5. J. D. Hoffman. Polymer, 24, 3, 1983.
6. S. Z. D. Cheng, B. Lotz. Polymer, 46, 8662, 2005.
7. L. Granasy, et al. Phys. Rev. E72, 011605, 2005.
8. P. J. Phillips, et al. J. Polymer Sci., B, 25, 1725, 1987.
9. P. J. Phillips, G. J. Rensch.. J. Polymer Sci., B, 27, 155, 1989.
10. K. R. Chynoweth, Z. H. Stachurski. Polymer, 27, 1912, 1986.
11. H. L. Chen, et al. Macromolecules, 30, 1718, 1997.
12. M. J. Jenkins, K. L. Harrison. Polym. Adv. Technol., 17, 474, 2006
13. P. Skoglund, A. Fransson. J. App. Polym Sci., 61, 2455, 1996.
14. U. W. Gedde, et al. Polymer, 45, 5251, 2004.
15. S. W. Chun, S. Y. Kwak. Macromal. Chem. Phys. 207,1166, 2006.
16. T. Hideto, et al. Biomacromolecules, 6, 244, 2005.
17. C. M. Dong, J. L. Wang. Polymer, 47, 3218, 2006.
18. Z. Wang, B. Jiang. Macromolecules, 30, 6223, 1997.
19. M. Yasuniwa, et al. Polymer, 47, 7554, 2006.
20. L. Mandelkern, et al. J. Thermal Analysis and Calorimetry, 59, 435, 2000.
21. I. Koji, M. Yasuniwa. Polymer, 48, 5398, 2007.
22. T. Arnaldo, et al. Polymer Testing, 222, 2007.
23. E. Urbanovici, H. A. Schneider, H. J. Cantow. J. Polymer. Sci.: B, 35, 359, 1997.
24. B. Wunderlich. Macromolecular Physics, III, Academic, New York, 1980.
25. J. D. Hoffman, J. J. Weeks. J. Res. Natl. Bur. Stand, Part A, 66, 13, 1962.
26. D. Turnbull, J. C. Fisher. J. Chem. Phys., 17, 71, 1949.
27. S. Z. D. Cheng, B. Wunderlich. Macromolecules, 21, 3327, 1988.
28. T. Nishi, Z. Qiu. Polymer, 44, 7749, 2003.
29. J. D. Hoffman, et al. J. Phys. Chem., A, 79A, 671, 1975.
30. A. Toda, S. K. Ghosh, M. Hikosaka. Colloid Polym Sci., 279, 382, 2001.
31. A. Toda, et al. Polymer, 43,6585, 2002.
32. A. Toda, et al. Macromoiecules, 35, 6985, 2002.
33. J. D. Hoffman, R. L. Miller. Macromolecules, 21, 3038, 1988.
34. B. Wanderlich. Macromolecular Physics., Academic, New York, 1973/1976.
35. M. Hikosaka. Polymer, 31, 458, 1990.
36. A. J. Kovacs, et al. Colloid Polymer Sci., 250, 530, 1972.
37. G. Ungar, A. Keller. Polymer, 27, 1835, 1986.
38. S. Z. D. Cheng, et al. Polymer, 33, 1140, 1992.
39. Allegra, Giuseppe. Interphases and Mesophases in Polymer Crystallization, SpringerLink, Berlin Heidelberg, 2005.
40. J. Yang, B. J. McCoy. J. Chem. Phys.,122, 244905, 2005.
41. A. Keller, et al. J. Mater Sci., 19, 2781, 1984.
42. K. Matyjaszewski, S. Qin. Macromolecules, 36, 1843, 2003.