• 作者： Lee, Hurng-Rern; Lee, Yu-Der
• 中文摘要： 感光性芳香族聚酸酯在論中文已成功地經由聚縮合的方式聚合而得,而聚乙內醯 則是聚酸酯經由加熱閉環的產物,在本論文中,利用多重加熱速率方法探討聚乙內醯的熱裂解動力學與其閉環反應,經研究結果發現此閉環反應為二次式。由於多重加熱速率方法與等溫法同時探討閉環反應動力學的結果相差不大,所以前者方法亦可應用於探討閉環反應動力學。另外感光性聚酸酯經75W汞-氙燈照射之後,以溶劑測試其最大的不溶率達85%。
• 英文摘要： Photosensitive aromatic polyureidoester has been prepared via polyaddition reaction of N,N'-p-phenylenediglycine diallyl ester with methylene diphenylene diisocyanate in m-cresol. Polyhydantoin was obtained by thermal heterocyclization of polyureidoester, which was of a second order reaction determined by isothermal method. However, thermal conversion of polyureidoester to polyhydantoin in N/sub 2/ would yield a polyhydantoin structure; it would, while in the air, become a poly(hydantoin-co-parabanic acid) structure. Multiple heating rate kinetic method was not only utilized for investigating the thermal decomposition kinetics of polyhydantoin but also tested its feasibility for heterocyclic reaction studies. Both isothermal and multiple heating rate kinetic methods were observed here to exhibit similar values of activation energy for a heterocyclic reaction. Gel curve of polyureidoester films irradiated by 75W Hg-Xe lamp increased with an increasing irradiation time and leveled off at an approximate 85% of crosslinking.
• 中文關鍵字： 聚乙內醯; 熱退化; 環化; 感光材料; 照射時間
• 英文關鍵字： Polyhydantoin; Thermal Degradation; Cyclization; Photosensitive Material; Irradiation Time