合成伤口敷料水蒸气透过率的体外评估。
In vitro assessment of water vapour transmission of synthetic wound dressings.
作者信息
Wu P, Fisher A C, Foo P P, Queen D, Gaylor J D
机构信息
Bioengineering Unit, University of Strathclyde, Glasgow, UK.
出版信息
Biomaterials. 1995 Feb;16(3):171-5. doi: 10.1016/0142-9612(95)92114-l.
The water vapour transmission rate (WVTR) of 14 commercially available wound dressings (11 hydrocolloids, 2 hydrogels and 1 polyurethane film) was evaluated over 24 and 48 h periods using a modified ASTM standard method (ASTM E96-90). For the 48 h studies a novel microcomputer-controlled apparatus was employed. The dressings exhibited a wide range of WVTRs (76-9360 g m-2 d-1 at 24 h under forced air convection of 0.4 m s-1). The influence of air velocity of 0.4 m s-1 was not significant if the WVTR of the dressing was less than 880 g m-2 d-1 when measured under static air conditions. The influence of outer barrier layers and additional bandages on WVTR was also examined.
采用改进的ASTM标准方法（ASTM E96 - 90），在24小时和48小时的时间段内评估了14种市售伤口敷料（11种水胶体、2种水凝胶和1种聚氨酯薄膜）的水蒸气透过率（WVTR）。在48小时的研究中，使用了一种新型的微机控制装置。这些敷料表现出广泛的水蒸气透过率范围（在0.4 m s-1的强制空气对流条件下，24小时时为76 - 9360 g m-2 d-1）。当在静态空气条件下测量时，如果敷料的水蒸气透过率小于880 g m-2 d-1，0.4 m s-1的风速影响不显著。还研究了外部阻隔层和额外绷带对水蒸气透过率的影响。
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