聚乙烯醇微膠囊包覆薰衣草精油製備與其制放性之探討

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题名:	聚乙烯醇微膠囊包覆薰衣草精油製備與其制放性之探討 The Controlled Release and Preparation of PVA Microspheres
作者:	張志鵬胡建斌
贡献者:	紡工系
关键词:	聚乙烯醇薰衣草精油微膠囊緩效作用
日期:	2003-10-1
上传时间:	2010-06-03 10:19:18 (UTC+8)
摘要:	本研究以聚乙烯醇為殼材，薰衣草精油為芯材，進行化學法中的凝膠法製備包覆薰衣草精油微膠囊之研究。藉由添加硫酸鈉產生雲點、戊二醛產生交鏈、並以非離子界面活性劑當分散劑。改變制放的溫度與均質機攪拌轉速，來探討PVA微膠囊的緩效作用與成形性。結果顯示轉速的改變對粒徑大小有明顯的影響，轉速快者粒徑與分佈較狹窄，轉速慢著反之，然而粒徑大小的改變對核芯物包覆量無明顯的改變。PVA微膠囊有相當程度的緩效作用，使用環境溫度越高制放速率越快，若以50℃度下做制放，在有PVA殼膜保護下精油的緩釋效果提高超過一倍。 In this study, Microspheres were prepared by a simple coacervation method. Poly(vinyl alcohol)(PVA) was used as wall-membrane material and lavender essential oil was used as core material. The cloud point of PVA was investigated by added the Na2SO4. The glutaraldehyde blended acetic acid was used as crosslinking agent. The factors of release temperature and stirring rate were investigated for discussed the controlled release and surface morphology of PVA microspheres. The results indicated that the particle size decreased with increasing stirring rate as well as size distribution became narrow. But the stirring rate was not affected oil encapsulated significantly. The release rate increased with increasing the treated temperature. The effect of oil release up to 100% compared the PVA microspheres with pure essential oil without wall membrane at 50℃.
關聯:	華岡紡織期刊 10卷3期 P.264-271
显示于类别:	[紡織工程學系] 學報-華岡紡織期刊

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