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发明公开
CN104491912A 一种具有最佳水蒸气透过率的创面敷料的制备方法 无效 - 驳回

一种具有最佳水蒸气透过率的创面敷料的制备方法
摘要：
本发明属于组织工程的生物材料技术领域，具体涉及一种具有最佳水蒸气透过率的创面敷料的制备方法。本发明要解决的技术问题是提供一种皮肤缺损创面用聚氨酯敷料的创面敷料。本发明的技术方案是一种具有最佳水蒸气透过率的创面敷料的制备方法，包括如下步骤：将聚氨酯粒料溶解在N,N-二甲基甲酰胺中，溶解完全后，向溶液加入柠檬酸钠粉末；将溶液倒入模具中，将模具在100℃放置60～240min，去离子水浸泡，烘干，即得到水蒸气透过率范围为1500～3500g/m2/24h的创面敷料。本发明方法制备的创面敷料具有良好的水蒸气透过率，有助于创面恢复。
摘要（英）：

The invention belongs to the technical field of biological materials of tissue engineering, particularly relates to a preparation method of a wound dressing with optimal water vapor permeability and provides a polyurethane wound dressing for skin wounds. According to the technical scheme, the preparation method of the wound dressing with the optimal water vapor permeability comprises the following steps: completely dissolving polyurethane particles in N,N-dimethylformamide, and adding sodium citrate powder into the solution; pouring the solution into a mold, standing at 100 DEG C for 60-240 minutes, immersing the mold in deionized water, and drying, so as to obtain the wound dressing with the water vapor permeability of 1500-3500g/m<2>/24h. The wound dressing prepared by virtue of the preparation method has good water vapor permeability and is beneficial to the wound recovery.

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