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Rapid hemostatic and mild polyurethane-urea foam wound dressing for promoting wound healing.
來源:陳仕國教授個人網站 發(fā)布日期:2018-01-02
作者:Xiangyu Liu, Yuqing Niu, Shiguo Chen*.
關鍵字:Polyurethane-urea, Rapid hemostatic, Foam wound dressing, Histological assessment
論文來源:期刊
具體來源:Materials Science & Engineering C: Materials for Biological Applications
發(fā)表時間:2017年

        A novel rapid hemostatic and mild polyurethane-urea foam(PUUF)wound dressingwas prepared by the particle leaching method and vacuum freeze-drying method using 4, 4-Methylenebis(cyclohexyl isocyanate), 4,4-diaminodicyclohexylmethane and poly (ethylene glycol) as raw materials. And X-ray diffraction (XRD), tensile test, differential scanning calorimetry (DSC) and thermogravimetry (TG) were used to its crystallinity, stress and strain behavior, and thermal properties, respectively. Platelet adhesion, fibrinogen adhesion and blood clotting were performed to evaluate its hemostatic effect. And H&E staining and Masson Trichrome staining were used to itswound healing efficacy. The results revealed the pore size of PUUF is 50–130 μm, and its porosity is 71.01%. Porous PUUF exhibited good water uptake that was benefit to adsorb abundant wound exudates to build a regional moist environment beneficial for wound healing. The PUUF wound dressing exhibit better blood coagulation effect than commercial polyurethane dressing (CaduMedi). Though both PUUF and CaduMedi facilitated wound healing generating full re-epithelialization within 13 days, PUUF was milder and lead to more slight inflammatory response than CaduMedi. In addition, PUUF wound dressing exhibited lower cytotoxicity than CaduMedi against NIH3T3 cells. Overall, porous PUUF represents a novel mild wound dressing with excellent water uptake, hemostatic effect and low toxicity, and it can promote wound healing and enhance reepithelialization.

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