In situ synthesis, morphology, and thermal properties of polystyrene-MgAl layered double hydroxide nanocomposites

被引：26

作者：

Botan, Rodrigo ^{[1
]}

Nogueira, Telma Regina ^{[1
]}

Wypych, Fernando ^{[2
]}

Ferrareso Lona, Liliane Maria ^{[1
]}

机构：

[1] Univ Estadual Campinas, Sch Chem Engn, Sao Paulo, Brazil

[2] Univ Fed Parana, Dept Chem, BR-80060000 Curitiba, Parana, Brazil

来源：

POLYMER ENGINEERING AND SCIENCE | 2012年 / 52卷 / 08期

关键词：

STRUCTURAL-CHARACTERIZATION; SOLUTION INTERCALATION; MECHANICAL-PROPERTIES; BULK-POLYMERIZATION; MAGNESIUM-ALUMINUM; INITIATOR; HYDROTALCITE; ANIONS; DELAMINATION; EXFOLIATION;

D O I：

10.1002/pen.23122

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Polystyrene (PS)/layered double hydroxide (LDH) nanocomposites were synthesized by in situ free radical bulk polymerization. LDH formed by magnesium and aluminum (Mg:Almolar ratio of 2:1) was prepared by coprecipitation method and intercalated with sodium dodecyl sulfate (DDS). The nanocomposites were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), and flammability test. The XRD and TEM demonstrated that synthesized nanocomposites in all compositions studied showed a high global dispersion of LDH in PS, suggesting exfoliation. The results of TGAs (when 50% mass loss was selected as a comparison point) and flammability tests for synthesized nanocomposites, presented a significant improvement in thermal stability and flammability property when compared with pure PS. This behavior and properties indicate application of the surfactant intercalated LDH reinforced PS in fields where thermal stability is an important characteristic. POLYM. ENG. SCI., 2012. (C) 2012 Society of Plastics Engineers

引用

页码：1754 / 1760

页数：7

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