Fast magnetic-field-induced formation of one-dimensional structured chain-like materials via sintering of Fe3O4/poly(styrene-co-n-butyl acrylate-co-acrylic acid) hybrid microspheres
Fast magnetic-field-induced formation of one-dimensional structured chain-like materials via sintering of Fe3O4/poly(styrene-co-n-butyl acrylate-co-acrylic acid) hybrid microspheres
复制标题
通过烧结 Fe3O4/聚(苯乙烯-丙烯酸正丁酯-丙烯酸)杂化微球在磁场诱导下快速形成一维结构链状材料
DOI：
10.1039/c4ra16809g
复制
发表时间：
2015-03
期刊：
影响因子：
3.9
通讯作者：
Zhang, Qiuyu
中科院分区：
文献类型：
--
作者：
Li, Hui;Gu, Junwei;Zhang, Baoliang;Zhang, Qiuyu
采用一种简便、快速的方法，通过烧结Fe 3 O 4/P（St-co-nBA-co-AA）杂化微球制备了一维杂化微链。值得注意的是，这是第一次通过物理融合而不是化学方法连接和固定1D结构。关键的过程是在P（St-co-nBA-co-AA）粒子的玻璃化转变温度（Tg）下在磁场下烧结杂化微球。通过SEM、光学显微镜、EDS、XRD和FTIR等表征手段证实了一维Fe 3 O 4/P（St-co-nBA-co-AA）杂化微链的成功制备，并对杂化微链的形成机理进行了探讨。一维杂化微链的长度为几百微米，直径为10-15 μm。TGA测量表明，在1D结构中的大比例的熔融聚合物颗粒达到64.5%。VSM曲线表明饱和磁化强度为18.7 emu g-1，这足以使1D微链被外部磁场控制和分离。压汞孔隙率法和断裂的1D微链的SEM图像表明，这些微链是多孔的。此外，已经发现，可以在低浓度的Fe 3 O 4颗粒下获得单独的微链，否则发生聚集。
A facile and fast procedure has been developed to prepare one-dimensional (1D) hybrid microchains by sintering of Fe3O4/poly(styrene-co-n-butyl acrylate-co-acrylic acid) (Fe3O4/P(St-co-nBA-co-AA)) hybrid microspheres. Noteworthily, it is the first time that the 1D structure has been linked and fixed via physical fusion instead of by a chemical method. The crucial process is to sinter the hybrid microspheres at the glass transition temperature (Tg) of P(St-co-nBA-co-AA) particles under a magnetic field. SEM, optical microscopy, EDS, XRD and FTIR have proved the successful fabrication of 1D Fe3O4/P(St-co-nBA-co-AA) hybrid microchains and the formation mechanism has been discussed. The 1D hybrid microchains have lengths of several hundred micrometers and diameters of 10–15 μm. A TGA measurement has indicated that the large proportion of fused polymer particles in the 1D structures reaches 64.5%. A VSM curve has shown that the saturation magnetization is 18.7 emu g−1, which is enough for the 1D microchains to be controlled and separated by the external magnetic field. Mercury intrusion porosimetry and a SEM image of the fractured 1D microchains have demonstrated that these microchains are porous. Moreover, it has been found that individual microchains can be obtained at a low concentration of Fe3O4 particles, otherwise aggregation occurs.
登录
查看更多内容
影响因子：
29.4
作者：
H. Masuda;T. Yanagishita;K. Yasui;K. Nishio;Ichizo Yagi;T. Rao;A. Fujishima
通讯作者：
H. Masuda;T. Yanagishita;K. Yasui;K. Nishio;Ichizo Yagi;T. Rao;A. Fujishima
DOI：
10.1021/la802711y
发表时间：
2009-01
期刊：
Langmuir : the ACS journal of surfaces and colloids
影响因子：
--
作者：
H. N. Yow;A. Routh
通讯作者：
H. N. Yow;A. Routh
影响因子：
15
作者：
Yin, YD;Lu, Y;Xia, YN
通讯作者：
Xia, YN
影响因子：
5.5
作者：
Guoliang Li;L. Xu;K. Neoh;E. Kang
通讯作者：
Guoliang Li;L. Xu;K. Neoh;E. Kang
影响因子：
9.9
作者：
Wenwen Wang;Qiuyu Zhang
通讯作者：
Wenwen Wang;Qiuyu Zhang