不同型号PVA对纳米TiO<sub>2</sub>/PVA复合材料性能的影响

不同型号PVA对纳米TiO₂/PVA复合材料性能的影响

基金项目: 湖南省科技厅基金(2010GK2029)

详细信息

1.
Key Laboratory of New Packaging Materials and Technology, Hunan University of Technology, Zhuzhou 412007, China;
2.
College of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China

摘要

摘要: 用硅烷偶联剂γ-甲基丙烯酰氧基丙基三甲氧基硅烷(KH550)对纳米TiO₂进行改性, 将不同比例的聚乙烯醇(17-88与17-99)相混合制成胶液, 再采用直接共混法制备了纳米TiO₂/聚乙烯醇(PVA)复合材料, 并流延成膜。通过自制透水仪、扫描电镜、热失重分析、拉伸强度、耐水性能以及透明性对纳米TiO₂/PVA复合膜进行表征, 探讨不同含量的PVA 17-88对复合膜的性能影响。结果表明, PVA 17-88的质量分数为30%, 纳米TiO₂ /PVA膜厚度控制在25~30 μm, 透水量较大, 拉伸强度达到28.72 MPa, 耐水性能最佳。
- 聚乙烯醇(17-99与17-88) /
- 纳米TiO₂ /
- 复合材料 /
- 阻隔性能 /
- 耐水性能
Abstract: The modified nano-TiO₂ by aminopropyl triethoxy silane(KH550) was used to prepare nano-TiO₂/PVA composites through a solution casting method (PVA types: 17-88 and 17-99). The different contents of PVA 17-88 in nano-TiO₂/PVA composites were characterized by TG analysis, and the structures of the composites were analyzed by SEM. The mechanical and water resistance and transparency of the composites were also characterized. The results show that when the mass fraction of PVA 17-88 is 30% and the thickness of membrane is controlled in 25~30 μm, the tensile strength is up to 28.72 MPa, the mass loss rate is the lowest.
- PVA(17-88 and 17-99) /
- nano-TiO₂ /
- composites /
- barrier properties /
- water resistance