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A Tough Composite Hydrogel can Controllably Deliver Hydrophobic Drugs under Ultrasound  
A Tough Composite Hydrogel can Controllably Deliver Hydrophobic Drugs under Ultrasound
資料類型: PDF文件
關鍵詞: composite  hydrogel  controlled  release  hydrophobic  drug  poly(vinyl  
alcohol)  ultrasound  
資料大小: 759k
所屬學科: 高分子化學
來源: 來源網(wǎng)絡
簡介:
Hydrogels are promising materials for biomedical uses, but they usually lack the ability to encapsulate hydrophobic drugs with proper drug-releasing stimulating method. Here a composite hydrogel with ultrasound controllable hydrophobic drug release behavior is reported, hydrophobic drug-loaded silicone oil were dispersed in poly(vinyl alcohol) hydrogel as microdroplets, which not only act as drug reservoirs but also notably enhance the toughness of the hydrogel. Ultrasound is used to trigger the hydrophobic drug release from the hydrogel, high on–off drug release ratios are obtained in the surveyed samples. Mechanism of ultrasound controlled drug release is studied, and the results indicate the mechanical effect is the main reason. The facile and general method of encapsulation and controlled release of hydrophobic drugs from hydrogels proposed in this contribution can be readily extended to other hydrogel system and can potentially broaden the application scope of hydrogel drug delivery.
上傳人: jiangjq
上傳時間: 2018-12-25 17:16:25
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