本研究首先合成含親疏水性PCL-PEG-PCL triblock copolymer 之二元醇，並以之為軟鏈節依界面聚合法製備含精油的PU微膠囊，變化triblock軟鏈節之組成（PEG分子量與CL/PEG莫耳比）、硬軟鏈節含量莫耳比(NCO/OH)及硬鏈節種類，探討其對微膠囊構造與物性及精油之釋放性之影響。本研究亦對棉織物進行加工，探討加工織物之釋放性。
結果發現，在變化微膠囊之軟鏈節種類及硬軟鏈節莫耳比(NCO/OH)方面，以NCO/OH較大(7E)者具有較大的粒徑、較佳的成型性，但香精油之釋放性則較差；軟鏈節PEG分子量較大(2000系列)者具有較小的粒徑、其形狀較不規則且易產生相分離，香精油之釋放性較佳；軟鏈節具高CL/PEG莫耳比且高PEG分子量 (E2000C4)者具有較好成型性，易產生相分離釋放性較佳。另外，變化PU微膠囊之硬鏈節種類方面，芳香族微膠囊之粒徑分佈較脂肪族者更為寬廣、膠囊之表面構造較為粗糙、殼膜較厚，精油之釋放性較差，脂肪族H12MDI之膠囊其成型近似圓形、表面較光滑、殼膜較薄，精油之釋放性較佳，結晶度較高。PU微膠囊之加工織物其精油之釋放性結果與單獨微膠囊之測試結果一致。

In this study, first, we synthesized the triblock ester-ether copolydiol (PCL-PEG-PCL) presenting hydrophilic and hydrophobic properties. Secondary, the polyurethane (PU) microcapsule content Lavender oil is produced by interfacial polycondensation and varied the composition of the triblock ester-ether copolydiol as the soft segment；Namely, change the PEG molecular weight and CL/PEG molar ratio. The different kinds of hard segment are used and varying the NCO/OH molar ratio, Diethlenetriamine (DETA) is employed as the chain extender. We discuss the relationship of the structure physical properties, formation and release properties of the PU microcapsule. The release properties of cotton fabrics treated by PU microcapsule dipping are discussed.
The result of the different NCO/OH molar ratio of the PU microcapsule, the highest (7E) has greater particle size, formation properties and slower release. The largest PEG molecular weight (2000 series) has smaller particle size, irregular shape of microcapsule phase separation and faster release caused by greater phase separation. The highest CL/PEG molar ratio and high molecular weight PEG (E2000C4) of the soft segment has bigger particle size better formation and faster release.
In addition, within result of the different kinds of hard segment, the aromatic hard segment like TDI and MDI has a slow release speed, a wider particle distribution, rougher microcapsule surfaces and greater thickness of the microcapsule wall than the microcapsule of aliphatic hard segment. The aliphatic PU microcapsule (H12MDI) to form a smooth and thin spherical surfaces process a fast release and has greater crystallization. The result of finish fabrics treated by PU microcapsule show the same release behavior as the microcapsule before adhesion.

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