CAJ | 학술논문

将酸化石墨烯、羟基化多壁碳纳米管通过超声离心等物理方法合成碳纳米管／石墨烯杂化材料以及用化学多步法合成碳纳米管／石墨烯杂化材料，按照0.1 mg／mL分别分散于四氢呋喃溶剂中超声72 h制备碳纳米材料的分散液，并将分散液静置24 h。通过紫外光谱证明所用碳纳米杂化材料已成功合成，同时通过紫外光谱、显微镜扫描和沉淀实验表征碳纳米材料的分散性及分散稳定性。结果表明，相比于碳纳米管、石墨烯和物理法合成碳纳米管／石墨烯杂化材料，化学多步法合成的碳纳米管／石墨烯杂化材料具备更优异的分散性及分散稳定性，这要归因于分散好的碳纳米管先与聚丙烯酰氯反应，以初步抑制碳纳米管的团聚，其次将其再与石墨烯反应，这样碳纳米管和石墨烯就通过聚丙烯酰氯连接在一起，构建出三维结构，抑制碳纳米管的重新团聚和石墨烯片层的叠加。
장산화석묵희、간기화다벽탄납미관통과초성리심등물리방법합성탄납미관／석묵희잡화재료이급용화학다보법합성탄납미관／석묵희잡화재료，안조0.1 mg／mL분별분산우사경부남용제중초성72 h제비탄납미재료적분산액，병장분산액정치24 h。통과자외광보증명소용탄납미잡화재료이성공합성，동시통과자외광보、현미경소묘화침정실험표정탄납미재료적분산성급분산은정성。결과표명，상비우탄납미관、석묵희화물리법합성탄납미관／석묵희잡화재료，화학다보법합성적탄납미관／석묵희잡화재료구비경우이적분산성급분산은정성，저요귀인우분산호적탄납미관선여취병희선록반응，이초보억제탄납미관적단취，기차장기재여석묵희반응，저양탄납미관화석묵희취통과취병희선록련접재일기，구건출삼유결구，억제탄납미관적중신단취화석묵희편층적첩가。
The different suspensions were prepared by adding GnPs-OH,MWCNTs-OH,hybrid materials(physical method) and hybrid materials(chemical multi-step)into the tetrahydrofuran(THF) according to 0.1 mg/mL and sonicated for 72 h. Then the suspensions were placed for 24 h. The successful preparation for hybrid materials was proved by the UV spectrum. The dispersion and dispersion stability of suspensions were characterized by the UV spectrum,optical microscopy and sedimentation tests. The results show that hybrid materials (multi- step) own the excellent dispersion and dispersion stability when comparing to the GnPs-OH, MWCNTs-OH and hybrid materials (physical method ). The reason may be explained as followings: the PACl can react with well dispersion MWCNTs-OH to slightly inhibit aggregation of MWCNTs-OH. Then GnPs-OH is put into reaction product to prepare hybrid material. So the bridge of PACl could link MWCNTs-OH and GnPs-OH together closely while three-dimensional(3D) structure hybrid materials is prepared. The special 3D structure could inhibit MWCNTs-OH re-aggregation and re-segistration to a certain extent.