期刊
JOURNAL OF ORGANOMETALLIC CHEMISTRY
卷 732, 期 -, 页码 1-7出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jorganchem.2013.01.024
关键词
Hyperbranched polymer; Thiol-ene; Step-grown polymerization; Click reaction
资金
- National Natural Science Foundation of China [21274080]
- Key Natural Science Foundation of Shandong province of China [ZR2011BZ001, ZR2009BZ006]
- Graduate Independent Innovation Foundation of Shandong University (GIIFSDU) [yzc 11030]
Novel hyperbranched organosilicon polymers were successfully prepared via step-growth thiol-ene click reaction using mercaptopropylmethyldiallylsilane (AB(2)) and mercaptopropyltriallylsilane (AB(3)) as hyperbranched monomers. The structures of the prepared polymers were characterized by Fourier transform infrared spectroscopy and nuclear magnetic resonance spectroscopy. The degree of branching (DB) of the polymers was determined using quantitative Si-29 NMR spectroscopy. The DB of the polymers from AB(2) and AB(3) was 0.60 and 0.22, respectively. The results of thermogravimetric analysis showed that the presence of thioether does not affect the thermal stability of the resulting silicon-containing hyperbranched polymers (Si-HBs). The resulting Si-HBs can be used as promising candidate materials for heavy metal adsorption because of the thioether bond. (C) 2013 Elsevier B.V. All rights reserved.
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