制得了粒径均匀、兼有电磁响应的镍/聚苯乙烯/二氧化钛(Ni/PSt/TiO2)三层核-壳结构的复合微球。用红外光谱、X射线衍射及透射电镜对微球进行了表征,研究了包覆前后微粒的沉降性、导电性、耐蚀性、热稳定性以及在电、磁场作用下的运动。结果表明,所制得的镍/聚苯乙烯/二氧化钛(Ni/PSt/TiO2)复合微球对电磁场有良好的响应性,在相互垂直的电场与磁场作用下排列形成了一种网状花样结构,为利用电、磁场调控排列粒子成三维有序结构提供基础。
The multiply coated Ni/PSt/TiO2 spheres with uniform size, high refractive index and easily assembling
property by electric and magnetic fields were prepared. The multilayer complex spheres consisted of a modified nickel colloidal sphere as the core,
a polymer polystyrene coating, and an outermost coating of titania. The prepared Ni/PSt/TiO2 multilayer composite spheres were characterized by
FT-IR, XRD, TEM, etc. Also, the composite particles showed well responses to electric and magnetic fields which were reflected by the formation of
network structure under electric and magnetic fields superimposed in the perpendicular.
参考文献
| [1] | Zaiter V S, Filimonov D S, Presnyakor I A, et al. J. Colloid Interface Sci., 1999, 212: 49--57. [2] Bourgeat-Lami E, Lang J. J. Colloid Interface Sci., 1998, 197: 293--308. [3] Henglein A. J. Phys. Chem., B. 2000, 104: 2201--2203. [4] Okitsu R, Murakami M, Tanabe S, et al. Chem. Lett., 2000. 1336--1337. [5] Schreder B, Schmidt T, Ptatschek V, et al. J. Phsy. Chem., B. 2000, 104: 1677--1685. [6] Liz-Marzán L M, Giersig M, Mulvaney P. Langmuir, 1996, 12: 4329--4335. [7] Hardikar V V, Matijevic E. J colloid Interface Sci., 2000, 221: 133--136. [8] Averitt R D, Sarkar D, Halas N J. Phys. Rev. Lett., 1997, 78: 4217--4220. [9] Szab D V, Vollath D. Adv. Mater., 1999, 11: 1313--1316. [10] Henglein A, Glersig M. J. Phys. Chem., B. 2000, 104: 5056--5060. [11] Oyama H T, Sprych R, Xie Y, et al. J Colloid Interface Sci., 1993, 160: 298--303. [12] 李群艳, 董鹏, 刘忍肖, 等(LI Qun-Yan, et al). 无机材料学报(Journal of Inorganic Matereials), 2001, 16 (5): 896--902. [13] Tam W Y, Yi G H, Wen W, et al. Phys. Rev. Lett., 1997, 78: 2987--2991. [14] Wen W, Wang N, Ma H, et al. Phys. Rev. Lett., 1999, 82: 4248--4251. [15] Zhao X P, Luo C R, Zhang Z D. Opt. Eng., 1998, 37: 1589--1592. [16] Kordonsky w I, Gorodkin S R, Medvedeva E V, in Electrorheological fluids, edited by R. Tao and G D Roy (World Scientific, Singapore, 1994), 22--36. [17] 张巨先, 杨静猗, 郁新, 等(ZHANG Ju-Xian, et al). 无机材料学报(Journal of Inorganic Matereials), 1998, 13 (6): 882--886. |
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