本實驗之目的在於分別以所合成之聚合型界面活性劑製備金、銀奈米微粒，並將其添加至低折射率單體methyl methacrylate (MMA)中，以純化後之azobisisobutyronitrile (AIBN)為起始劑，進行聚合反應，製作GI型PMMA塑膠光纖棒。藉由逆微胞系統製備奈米微粒，探討在不同製備變因下UV-Vis吸收光譜的特性差異、所形成奈米粒子的粒徑，及奈米粒子分別在單體MMA和光纖棒中的分散狀況，在本文中均有詳細討論。由結果得知銀奈米微粒分散在單體MMA中時，平均粒徑介於5~20 nm之間，金奈米微粒之平均粒徑介於4~24 nm之間；聚合反應後，銀奈米微粒之平均粒徑介於9~29 nm之間，金奈米微粒之平均粒徑介於10~24 nm之間。粒徑之變化均隨W值升高而增加。經由各項製備變因之比較，發現主鏈較長之界面活性劑對於所形成之奈米微粒，能提供較佳的穩定效果。除了高折射率奈米微粒的加入，可增加塑膠光纖整體射率差，含高折射率基團的聚合型界面活性劑可使光纖整體射率差增大，對提升塑膠光纖整體之光學特性亦有所助益。整體而言，在本系統製備下之含奈米微粒之塑膠光纖，其NA值增大，使得亮度及可接受的資訊容量均明顯提高，提高了在資訊傳送的應用價值。

　The gold and silver nanoparticles were synthesized using the polymerizable surfactants of 4-(6-acryloyloxyhexyloxy)benzoic acid (AHBA) and 4-(11-acryloxy-undecyloxy)benzoic acid (AUBA). Gradient Refractive Index (GRIN) rods were fabricated by centrifugal diffusing polymerization which was developed in our lab. In order to fabricate Gradient Refractive Index (GRIN) plastic rods with a high acceptance angle, nanoparticles were used as high refractive index materials and methyl methacrylate (MMA) was used as a reactive low refractive index monomer. The nanoparticles were prepared in a surfmer/MMA/H2O reverse micellar system. The dependence of the feed molar ratio of surfmer/MMA/H2O and nanoparticles on the optical properties of GRIN plastic rods was investigated and it was found that the polymerizable surfactant with a long chain length could improve the excellent results for the preparation of nanoparticles and plastic rods. The existence of silver nanoparticles in the optical fiber was found to increase the refractive index of the plastic rods. The polymerizable surfactant with a high refractive index was found to further increase the refractive index of the GRIN plastic rods. Due to the increase of numerical aperture (NA) of the GRIN plastic rods containing nanoparticles, the brightness and optical properties of the rods were increased obviously. Image transmission and lens characteristics of GRIN plastic rods were all evaluated in this work.

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