樹枝狀高分子型光硬化樹脂之光硬化動力學分析與物性探討

The study of UV curning kinetic and physical properties based on dendrimer

陳炯達(Jung-Da Chen)

指導教授 ： 芮祥鵬

國立臺北科技大學/工程學院/有機高分子研究所/碩士(2007年)

摘要

實驗中，使用的高分子為樹枝狀聚酯高分子（Dendrimer），具高度分枝，為三度空間立體結構，且末端帶有 19 個 Hydroxy Group 官能基。將末端官能基分別與不同莫爾數之 Acrylic acid （丙烯酸）進行酯化反應，合成出一系列帶雙鍵之光硬化型寡聚物（Oligomer），並經由Doublebean Photocalorimeric Accessory（DPA）、黏度計（Viscometer）、鉛筆硬度計、折射儀，我們可對其作一系列的測試。
最後可以明顯發現到，當Dendrimer分子量從原先2000增為3026時,其黏度從7500cps降為850cps，即分子量愈大，黏度愈低。而在光硬化動力學分析方面，也可明顯發現到，不管是轉換率或者是反應速率，樹枝狀高分子皆比傳統線型高分子優異，即轉換率高、反應速率快。而在物性方面，經由儀器測試結果可發現，提高枝化度可明顯提高交聯密度，增加成膜後之硬度（Hardness），也可提升折射率（RI index）。

關鍵字

樹枝狀高分子 ； 寡聚合物 ； 光硬化光起始劑 ； 轉化率 ； 反應速率 ； 硬度 ； 折射率

並列摘要

This work，we use dendrimer which has high branch and is a three-dimentional space structure，it has nighteen hydroxyl group and can reaction with different amount of acrylic acid.Finally，we can synthesis series of oligomers，and then we can test by Doublebean Photocalorimeric Accessory、Viscometer、Pencil Hardness、Refraction index.
Finally we can obvious to find，the dendrimer’s original molecular weight is 2000 and then add to 3026,it’s viscosity is reduce from 7500cps to 850cps. In another words，increase dendrimer’s molecular weight can get a lower viscosity.In UV curning kinetic analysis，we can obvious to find，dendrimer’s conversion and reaction rate is better than linear polymer.Dendrimer has high conversion and reaction rate.In physical property,we can find the result by instrument.Increase polymer’s branch can increase the curning density、hardness and refraction index.

並列關鍵字

dendrimer ； oligomer ； UV curning ； photoinitiator ； conversion ； reaction rate ； hardness ； refraction index

參考文獻

23.C.G.Roffey , Photopolymerization of Surface Coating , John Wiley & Sons ,1982 , p161。

28.R.B.Prime , " Differential Scanning Calorimeter of the Epoxy Cure Reaction ,"Polymer Eng. Sci., vol. 13, 1973, pp.365.

29.K. Dusek and M. Bleha , " Curing of Epoxide Resins :Model Reaction of Curing with Amine ," J. Polym. Sci,Polym Chem Ed., vol. 15, 1977, pp.2393.

30.P. F. Bunyan and A. V. Cunliffe , " Microcalorimetric determination of the cure reaction in some fluorinated polyether rubbers," Thermochimica acta, vol. 276, 1996, pp.134.

31.Y. S. Pusatciolu, A. L. Fricke and　J. C. Hassler, " Heats of Reaction and Kinetics of a Thermoset Polyester," J. Appl. Polym. Sci, vol. 24, 1979, pp.937.