本研究首先探討不同濃度(1:6，1:7，1:8，1:9及1:10)的丁酮/乙醇潛溶劑及該潛溶劑含有飽和溶解度的光致變色染料在工作溫度40℃~60℃下對三醋酸纖維素薄膜質傳與光學的影響，實驗結果不同濃度的丁酮/乙醇潛溶劑及該潛溶劑含有飽和溶解度的光致變色質傳入TAC膜是屬於一種含有Case I與Case II的不正常擴散行為，TAC薄膜會先發生過飽和吸收現象，再進行解析淬取而後達到平衡，其中TAC膜過飽和吸收丁酮/乙醇潛溶劑的(Case I, Case II)活化能分別為(2.38-4.02 kcal/mole)與(0.76-1.40 kcal/mole)，飽和光致變色染料潛溶劑的(Case I, Case II)活化能分別為(3.11-4.15 kcal/mole)與(0.40-1.57 kcal/mole)。TAC膜過飽和吸收丁酮/乙醇潛溶劑與飽和光致變色染料潛溶劑前的反應熱∆H分別為(0.739-1.398 kcal/mole)與(0.308-0.551 kcal/mole)，經由光譜分析知道TAC膜吸收較多飽和光致變色染料會降低可見光的穿透率及增加變色的速率。 The present study has been investigated the influences of concentrations (1:6, 1:7, 1:8, 1:9, 1:10) of methyl ethyl ketone/ethanol cosolvent and containing with the photochromic dye in saturation solubility on mass transport behavior and optical property of cellulose triacetate film. The experimental results show that the mass transport behavior at 40-60℃ will be firstly occurred a supersaturation absorption phenomenon and then carried out desorption to reach equilibrium. The supersaturation absorption phenomenon belongs to an anomalous diffusion i.e. contains Case I and Case II diffusion which the activation energy in different concentration of cosolvent is 2.38-4.02 kcal/mole (Case I) and 0.76-1.40 kcal/mole (Case II), respectively. The activation energy of cosolvent with saturated photochromatic dye in different concentration is 3.11-4.15 kcal/mole (Case I) and 0.40-1.57 kcal/mole (Case II), respectively. The reaction heat of the TAC film absorbed saturated ketone/ethanol cosolvent and cosolvent with saturated photochromatic dye in supersaturation absorption stage are 0.739-1.398 kcal/mole and 0.308-0.551 kcal/mole, respectively. Through spectrum analysis, the visible transmittance was decreased and chromatic response velocity was increased with increasing the photochromatic dye absorption.