Radiation-induced admicellar polymerization of isoprene on silica: Effects of surfactant's chain length

被引：17

作者：

Yooprasert, Narissara ^{[1
]}

Pongprayoon, Thirawudh ^{[1
]}

Suwanmala, Phiriyatorn ^{[2
]}

Hemvichian, Kasinee ^{[2
]}

Tumcharern, Gamolwan ^{[3
]}

机构：

[1] King Mongkuts Univ Technol N Bangkok, Fac Engn, Dept Chem Engn, Bangkok 10800, Thailand

[2] Thailand Inst Nucl Technol, Nucl Res & Dev Grp, Bangkok 10900, Thailand

[3] Natl Sci & Technol Dev Agcy, Natl Nanotechnol Ctr, Patumthanee 12120, Thailand

来源：

CHEMICAL ENGINEERING JOURNAL | 2010年 / 156卷 / 01期

关键词：

Modified silica; Polyisoprene; Admicellar polymerization; Gamma radiation; KINETICS; STYRENE;

D O I：

10.1016/j.cej.2009.10.022

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This research compared radiation-induced admicellar polymerization with the traditional thermal process and studied the influence of the hydrocarbon chain length of different surfactants on film formation. Three types of surfactants were used in this study: dodecyl trimethyl ammonium bromide (DTAB), tetradecyl trimethyl ammonium bromide (TTAB) and cetyl trimethyl ammonium bromide (CTAB). Isoprene was used as a monomer for the formation of thin film inside the surfactant bilayers, called admicelle, adsorbed on silica surface. The results showed that an optimum dose can lead to a better film formation on silica, compared with the thermal method. However, when the dose was over the optimum value, the formation of polyisoprene film was diminished. The formation of polyisoprene film was found to depend not only on the hydrocarbon chain length of the surfactant, but also on the density of adsorbed surfactant on silica surface. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：193 / 199

页数：7

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