本實驗使用s-PS/o-Xylene高分子溶液系統觀察其凝膠化過程。首先在sPS/o-Xylene溶液系統建構相圖主要分成gel-sol curve與sol-gel curve。gel-sol curve是代表凝膠瓦解溫度，也就是凝膠熔點，以DSC每分鐘10℃的升溫速度決定凝膠的瓦解溫度。sol-gel curve是凝膠形成溫度，以不同體積分率的sPS/o-Xylene溶液在不同溫度下凝膠化一天，以紀錄能形成凝膠化的最低溫度定為凝膠形成溫度。
以FTIR來觀察凝膠化過程中所構成凝膠網絡架橋點的TTGG構象吸收度的變化，並運用化學反應動力學的觀念推導出TTGG構象吸收強度增加速率與濃度的作圖，其斜率為每一個架橋點所構成的TTGG segment數目。並且若將TTGG構象聚集成架橋點的過程視為晶核成長的過程，用穩定成核理論描述TTGG segment 聚集成有序區也就是凝膠網絡結構的架橋點。
在小角光散射部分，凝膠化過程在Hυ散射會出現X Type的圖型。經由Debye-Bueche理論分析可以得到凝膠特徵尺寸。將分析出的凝膠尺寸對照SEM圖形，發現凝膠特徵尺寸會與凝膠網絡的尺寸相符，因此Hυ的散射強度是取向漲落形成凝膠的網絡結構所貢獻。

This study discusses mainly gelation kinetics of the s-PS/o-Xylene solutions. At first, the phase diagram could be separated into two parts by gel-sol and sol-gel curves. The gel-sol curve means gel melting temperature determined by DSC with a heating rate of 10℃/min. The sol-gel curve represents the temperature of could be gel formation temperature which is determined by observing gelation in various volume fraction for one day .
It observed variation of the TTGG conformation in gelation process by FTIR. It applied the chemical kinetics to determine the process of TTGG segment aggregating to form the junction point. We can know if it plot rate of increasing intensity of the TTGG conformation and concentration, and the slope means the number of TTGG segment in a junction point. If the process of the aggregation of TTGG segments into junction points can be viewed as the process of the growth of nuclei. According to stable nucleation theory, if ln(dI572 /dt) and Tm2/[T(ΔT)2] have linear relationship, it should be reasonable to use stable nucleation theory to describe the formation of junction points through the TTGG segment aggregation.
In SALS part, it is observed that an X type pattern can be obtained from the gel of s-PS/o-Xylene solution in Hυ mode. By analyzing SALS data through Debye - Bueche theory, we can know the characteristic size of gel(ξ).Through comparing ξ with the picture of our gel network by SEM, we can find ξ is about the scale of the size of gel network, and hence the intensity of Hυ scattering is distributed by the orientational fluctuation which forms network of gel.

1. Flory, P. J., Disc Farad Sco., 57, 1 (1974).
2. Nijenhuis, K. T., Thermoreversible Network (1992).
3. Guenet, J., Thermoreversible Gelation of Polymer and Biopolymer (1992).
4. Stauffer, D.; Coniglio, A.; Adam, M., Gelation and critical phenomena, Adv. Polym. Sci. 44, 103 (1982).
5. De Gennes, P. G., Scaling Concepts in Polymer Physic (Cornell University, Ithaca, New York,1979).
6. Lin, C. S., A Stdudy of Structure Formation in PVF/Cyclohexanone Gels (NTUST Master's thesis, 1996).
7. Chou, C. M.; Hong, P. D., Macromolecules, 36, 7331 (2003).
8. Chou, C. M.; Hong, P. D., Macromolecules, 37, 5596 (2004).
9. Stein, R. S.; Wilson, P.R., J. Appl. Phys., 33, 1914 (1962).
10. Debye, P.; Bueche, A. M., J. Appl. Phys. 33, 1914 (1949).
11. Ishihara, N.; Seimiya, T.; Kuramoto, M.; Uoi, M., Macromolecules, 19, 2465 (1986).
12. Xu, Y.; Asano, T.; Petermann, J. Polymer, 30, 590, (1989).
13. Chatani, Y.; Shimane, Y.; Ijitsu, T.; Yukinari, T., Polymer, 34, 1625(1993).
14. Kobayashi, M.; Nakaoki, T., Macromolecules, 22, 4377(1989).
15. Gowd, E. B.; Nair, S. S.; Ramesh, C., Macromolecules, 36, 7388(2003).
16. Van Hooy-Coretjens, C. S. J.; Magusin, P. C. M. M.; Rastogi, S.; Lemstra, P. J., Macromolecules 35, 6630 (2000).
17. Daniel, C.; Deluca, M. D.; Guenet, J. M., Polymer, 37, 1273(1996).
18. Shimizu, H.; Wakama, T.; Wada, R.; Okabe, M.; Tanaka, F., Polym.J., 37,294 (2005).
19. Rudder, J. D.; Berghmans, H. F.; Schryver, C. D., Macromolecules, 35, 9529 (2002).
20. Tsutsui,T.; Katsumata, H.; Fukatsu, H.; Yoshimizu, T.; Kinoshita, Y., Polym. J., 31, 268(1999).
21. Deberdt, F.; Berghmans, H., Polymer, 35, 1694(1994).
22. Kobayashi, M.; Tsumura, K.; Tadokoro, H., J. Polym. Sci., Polym. Phys. Ed., 6, 1493 (1968).
23. Nakaoki, T.; Kobayashi, M., Rep. Progr. Polym. Phys. Jpn, 34, 359(1991).
24. Daniel, C., Macromol. Symp. 251, 1(2007).
25. Kobayashi, M.; Kozasa, T., Appl. Spectrosc., 47, 9(1993).
26. Ohkura, M.; Kanaya, T.; Kaji, K., Polymer, 33, 5044(1992).
27. Dikshit , A. K.; Nandi, A. K., Macromolecules, 31, 8886(1998).
28. Mandelkern, L., Crystallization of polymer, New York: Mc Graw-Hill (1964).
29. Hong, P. D.; Chou, C. M., Polymer, 41, 8311(2000).
30. Penning, A. J., J. Polym. Sci.; Polym. Symp., 59, 55(1997).
31. Stein, R. S.; Rhodes, M. B., J .Appl. Phys., 31, 1873 (1960).
32. Clough, S., van Aartsen, J. J., Stein, R. S., J. Appl. Phys., 36, 3072 (1965).
33. Petekidis, G.; Vlassopoulos, D.; Fytas, G.; Rulkens, R.; Wegner, G., Macromole- cules, 31, 6129 (1998).
34. Murakami, Y.; Hayashi, N.; Hashimoto, T.; Kawai, H., Polym. J., 4, 452 (1973).
35. Rhodes, M.; Stein, R. S., J. Polym. Sci., Part A-2, 7, 1539(1969).
36. Matsuo, M.; Miyoshi, S.; Azuma, M.; Nakano, Y.; Bin, Y., Phys. Rev. E, 72, 041403 (2005)
37. Debye, P.; Bueche, A. M., J. Appl. Phys., 20,518 (1949).
38. Debye, P.; Anderson, H.R.; Brumberger, H., J. Appl. Phys., 28, 679(1957).
39. Kizilay, M. Y.; Okay, O., Polymer, 44, 5239(2003).