摘要
报道了一种将石墨烯共价接枝到聚氨酯泡沫表面制备超疏水泡沫的方法。制备过程包括4个主要环节:(1)利用优化的Hummers法制备氧化石墨烯;(2)通过十二烷二胺对氧化石墨烯进行改性在石墨烯表面引入伯胺基团;(3)制备含有腈基的聚氨酯泡沫;(4)通过伯胺与腈基反应将石墨烯化学接枝到聚氨酯泡沫表面制备超疏水泡沫。采用傅里叶变换红外光谱、原子力显微镜、热重分析对接枝产物进行表征,证明了带有伯胺的石墨烯已成功接枝到聚氨酯泡沫上。利用接触角、油水混合物对制备的超疏水泡沫进行测试。结果表明,此方法制备的超疏水聚氨酯泡沫具有优良的疏水性,聚氨酯泡沫与水的接触角由未改性的121.4°增大到166.2°,同时发现此方法制备的聚氨酯泡沫的超疏水性具有很好的稳定性。
Graphene with amine group was covalently grafted on the polyurethane foam with nitrile group to form superhydrophobic foam. Fourier transform infrared spectroscopy（ FT-IR）,atomic force microscopy（ AFM）,thermogravimetric analysis（ TGA）,optical contact angle measuring device and scanning electron microscopy（ SEM） were used to characterize the foam. The appearance of the characteristic absorptions at 2848 cm- 1,2919 cm- 1and 1581 cm- 1in the FT-IR spectrum of the amidation of graphene oxide（ GO-DADD）,indicate that the dodecane diamine（ DADD） is successfully grafted onto graphene oxide（ GO）. Meanwhile,the appearance of the characteristic absorptions at 1645 cm- 1and the disappearance of the characteristic absorptions at 2237 cm- 1in the modified foam（ PU-DADD-GO）,indicate that the GO-DADD is successfully grafted onto polyurethane foam. Moreover,the modified foam（ PU-DADD-GO） exhibits a high contact angle（166. 2° ± 2. 7°）.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2016年第4期115-120,共6页
Polymer Materials Science & Engineering
基金
国家"863"计划重大项目(2008AA06A409)
校博士基金(14zx7161)
关键词
石墨烯
泡沫
化学接枝
超疏水
graphene oxide
foam
chemical grafting
superhydrophobicity
