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|Keywords: ||雙疏表面;無乳化劑乳化聚合法;1H, 1H, 2H, 2H-全氟辛醇丙烯酸酯;amphiphobic surface;soap-free emulsion polymerization;1H, 1H, 2H, 2H-perfluorooctyl acrylate|
|Issue Date: ||2016-10-13 12:38:33 (UTC+8)|
|Abstract: ||本研究探討以無乳化劑乳化聚合法合成次微米級和奈米級的核殼結構高分子顆粒來製備雙疏性表面的可能性。並利用殼層導入帶有含氟官能基的單體來提升接觸角，該含氟單體為1H, 1H, 2H, 2H-全氟辛醇丙烯酸酯(TAN)。|
次微米級核殼高分子顆粒是以苯乙烯(St)為核心單體，二甲基丙烯酸乙二醇酯(EGDMA)為交聯劑，殼層以TAN和丙烯酸丁酯(BA)為單體，而奈米級核殼高分子顆粒以BA為核心單體，並加入適當量的對-苯乙烯磺酸鈉鹽(NASS)以縮小粒徑至奈米級，再以相同的交聯劑和殼層組成，藉此來探討不同單體種類及調控核心或殼層克數和TAN含量以了解對接觸角的影響，還進一步嘗試將兩種不同類型的核殼高分子球混合以了解其對於接觸角的影響。利用影像式接觸角量測儀、掃描式電子顯微鏡(SEM)及動態光散射儀(DLS)來進行核殼高分子的特性分析。實驗結果顯示核殼高分子球皆為均一球型，粒徑範圍為200~300 nm以及30~50 nm。核殼次微米球對水的接觸角可達126度、對油的接觸角可達20度，而核殼奈米球對水的接觸角可達112度、對油的接觸角可達64度。最後，以混合製程製備雙疏表面時，可得介於兩混合的核殼高分子球之接觸角的雙疏表面。
;Amphiphobic surface was made from submicro and nano core-shell spheres prepared by soap-free emulsion polymerization. Fluoride, 1H, 1H, 2H, 2H-perfluorooctyl acrylate (TAN), was introduced to shell structure to improve amphiphobic property.
Submicro core-shell spheres were manufactured by using styrene (St) and ethylene glycol dimethylacrylate (EGDMA) as core monomers and butyl acrylate (BA) and TAN as shell monomers. Nano core-shell spheres were manufactured by using BA, sodium styrenesulfonate (NASS), and EGDMA as core monomers, and using the same compositions as shell monomers. The effects of different core or shell monomers and the proportion of TAN on contact angle were discussed. The effects of mixture of two types of core-shell spheres on contact angle were also discussed.
Vedio-based optical contact angle meter, Scanning electron microscope (SEM), and Dynamic light scattering (DLS) were used to determine the characterization of core-shell spheres. Submicro and nano core-shell particles had uniform spherical shape and particle size 200~300 nm and 30~50 nm, respectively. The highest water contact angle of submicro and nano core-shell spheres were 126 and 112 degree, respectively. The highest oil contact angle of submicro and nano core-shell spheres were 20 and 64 degree, respectively. Finally, contact angle of amphiphobic surface manufactured by mixing process was between the two.
|Appears in Collections:||[化學工程與材料工程研究所] 博碩士論文|
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