Graphene oxide (GO) was synthesized using a modified Hummer's method. GO and k-Carra-geenan( k-Car) film (GO/k-Car film) was prepared via tape casting and characterized by IR, SEM, and TGA. We optimized the formula and preparation conditions of GO/k-Car film by single-factor experiment to obtain the proper appearance, solubility, water vapor permeation and mechanical properties. The stable film was fabricated as follows; 15. 0 g 3% k-Car solution, 0. 040 g GO powder and 5. 0 g 8%PVA solution were mixed by intensely stirring for 5 h at 75℃. The mixture was then cast evenly, kept at 30℃ for 6. 5 h and peeled off as a free-standing film. Compared with the k-Car film, the mechanical properties of the GO/k-Car film were significantly improved. With incorporation of 5. 0 % GO, the peak load, tensile strength and tensile modulus of the GO/k-Car film are improved by 1.5-fold, 1. 5-fold and 1.6-fold, respectively. Meanwhile, GO/k-Car film has good water vapor permeability as well as hydroxyl radical scavenging activity.%在Hummers法基础上制得了氧化石墨烯(GO),采用流延法制备了氧化石墨烯/κ-卡拉胶(GO/K-Car)复合膜材料.结合红外光谱、扫描电子显微镜及热重分析对其结构进行表征.探讨了不同条件所得膜的成膜性、溶解性、透气性和力学性能,得到性质稳定GO/κ-Car复合膜的制备条件为15.0 g 3％的κ-Car溶液、0.040 g GO粉末及5.0g8％的PVA溶液于75 ℃搅拌混合5h后,流延铺平,于30℃烘干6.5h.GO质量分数为5％的GO/K-Car复合膜的最大负荷、拉伸强度及杨氏模量分别是对照组κ-Car膜的1.5倍、1.5倍和1.6倍.同时,GO/κ-Car复合膜具有较强的透气性能,且保留了κ-Car清除羟基自由基的生物性能.
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