聚乙烯醇微膠囊包覆樟腦油的製備與其制放性之探討

CCUR > College of Natural Science and Engineering > College of Engineering > Department of Textile Engineering > Journal of the Hwa Gang Textile > Item 987654321/3383

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Title:	聚乙烯醇微膠囊包覆樟腦油的製備與其制放性之探討 The Preparation and Controlled Release Properties of PVA Microcapsules Containing Camphor Oil
Authors:	張志鵬陳忠益
Contributors:	紡工系
Keywords:	聚乙烯醇微膠囊樟腦油制放性
Date:	2005-12-31
Issue Date:	2010-06-03 09:49:49 (UTC+8)
Abstract:	本研究是以樟腦油為芯材並以聚乙烯醇為殼材，利用物理化學法中的簡單凝膠法來製作聚乙烯醇微膠囊。藉由凝膠時間與添加交鏈劑的量及轉速的不同，分別探討其成形性、制放性與粒經的大小。PVA為一種溫度敏成型的材料，因此本文中亦探討添加Na2SO4的方式來控制凝膠所需的溫度。吾人利用簡單凝膠原理將PVA溶液攪拌並將溫度控制在雲點時，俾利膠體沾附於油滴上進而包覆油滴形成微膠囊。實驗結果顯示經由4小時的凝膠微膠囊可以獲取較佳的成形性。交鏈劑添加過量及均質機轉速過高均會導致成膠囊產生凝集現象而影響共成形性。樟腦油是一種高揮發性的精油，經由此微膠囊包覆方式能夠有效的控制其制放效果。 In this study, polyvinyl alcohol microcapsules (PVA) containing camphor oil was prepared by a simple coacervation method. The formation, particle size and controlled release properties were discussed by changing coacervation time, amount of crosslinking agent and stirring rate. In order to obtain an optimal coacervation temperature (cloud point), the various amount of Na2SO4 which added in PVA solution was investigated. The results indicated that the best condition of formation of PVA microcapsules was at 40°C. The PVA wall membrane also could increase the sustained release effectly.
Relation:	華岡紡織期刊 12卷4期 P.404-413
Appears in Collections:	[Department of Textile Engineering ] Journal of the Hwa Gang Textile

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