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| 目前，只有几篇文献提到了石墨烯在有机溶剂中分散机理.最受关注的是Coleman课题组研究提出的石墨烯与有机溶剂混合嫡理论。根据这一理论，他们分析了有机溶剂表面能与其溶解石墨烯能力的关系。理论计算表明，当溶剂表面能与石墨的表面能 (70 mJ∙m-2~80 mJ∙m-2)相近时，混合嫡非常接近于零，“溶解”过程容易进行。将溶剂表面能换算成表面张力后得出，石墨烯良溶剂的表面张力在40mJ.m一50mJ·m一之间。 |
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lihw891(金币+2): 谢谢你 2011-04-03 22:22:58
| Currently, only a few articles mentioned the graphite surfaces in organic solvents scattered mechanism. The biggest concern is the group study proposed Coleman graphite surfaces and organic solvents mixed primogeniture theory. According to this theory, their analysis of organic solvent surface with the relationship between the ability of dissolved graphite surfaces. The theoretical calculation show that, when the solvent with graphite surface surface can (70 mJ; m - 2 ~ 80 mJ; m - 2), mixed similar primogeniture very close to zero, "dissolving" process easier. Will solvent surface can convert to surface tension, graphite surfaces reached after the surface tension in good solvent 40mJ. M a 50mJ m. a between. |
3楼2011-04-03 19:49:30
lihw891(金币+8, 翻译EPI+1): 谢谢你 2011-04-03 22:22:46
| Very few literatures have mentioned the mechanism that graphene dispersed in organic solvents recently, The most attentive method proposed by Coleman’s group was mixed entropy between graphene and organic solvent,they analysed the relationship between surface energy of organic solvent and the ability of dissolving graphene. Theoretical calculations showed that the mixed entropy almost closing to zero when surface energy of organic solvent relate to graphite’s(70 mJ∙m-2~80 mJ∙m-2) and the process for “dissolution” would be very simple.The surface tension of graphene was about 40mJ.m一50mJ•m after convert the surface energy of solvent into surface tension. |
2楼2011-04-03 19:30:19
