Trend report macromolecular chemistry 2001

Mayer, Sabine; Zentel, Rudolf; Wilhelm, Manfred; Greiner, Andreas

doi:10.1002/1521-3935(200208)203:12<1743::aid-macp1743>3.0.co;2-7

Cited by 2 publications

(3 citation statements)

References 127 publications

(135 reference statements)

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“…Because of the nanoscale feature, nanocomposites possess superior physical and mechanical behavior over their more conventional microcomposites counterparts. Thermoplastic polymers/montmorillonite (clay) nanocomposites have also received much interest owing to their ability to provide substantial property enhancement by their large aspect ratio and surface area of the dispersed montmorillonite 8–12. The montmorillonite consists of ordered nanometer‐thick silicate plates that form a hydrophilic layer structure, which hinders the intercalation of organic polymers or monomers.…”

Section: Introductionmentioning

confidence: 99%

Preparation of syndiotactic polystyrene/montmorillonite nanocomposites via in situ intercalative polymerization of styrene with monotitanocene catalyst

Shen

Zhu²,

Liú³

et al. 2005

J of Applied Polymer Sci

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Syndiotactic polystyrene (sPS)/montmorillonite nanocomposites were prepared via in situ intercalative coordination polymerization using mono-( 5 -pentamethylcyclopenta-dienyl) tribenzyloxy titanium [Cp*Ti(OBz) 3 ] complex activated by methylaluminoxanes (MAO) and triisobutylaluminum (TIBA). The influences of polymerization conditions, such as the weight ratio of montmorillonite and styrene, temperature, and monomer concentration, on the preparation of sPS/montmorillonite nanocomposites was investigated. The intercalation spacing in the nanocomposites, as well as the exfoliation of the montmorillonite interlayers, was characterized with wide angle X-ray diffraction (WAXD) and transmission electron microscopy (TEM). The dispersibility of the nanoscale elements depended on the polymerization conditions and the surfactant treatment. The crystallizability and thermal properties of these nanocomposites were determined by differential scanning calorimetry (DSC) analysis and thermogravimetric analysis (TGA). Experimental results indicated that the degree of crystallinity of the sPS nanocomposite increased with increasing montmorillonite content and with higher T g and thermal decomposition temperature than pure sPS.

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Section: Introductionmentioning

confidence: 99%

Preparation of syndiotactic polystyrene/montmorillonite nanocomposites via in situ intercalative polymerization of styrene with monotitanocene catalyst

Shen

Zhu²,

Liú³

et al. 2005

J of Applied Polymer Sci

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show abstract

“…[1][2][3][4][5][6][7] In theory, multiblock copolymers could be synthesized by an alternately sequential addition of different comonomers into a living copolymerization system. [8][9][10] In practice, each addition of new monomer will inevitably make some living chain ends dead because of impurities, resulting in a polymer with a broad distribution in chain length.…”

Section: Introductionmentioning

confidence: 99%

“…In polymer chemistry, living polymerization, especially anionic polymerization, is the most impactful methodology for preparing model block copolymers with a designed molar mass and microstructure. − In theory, multiblock copolymers could be synthesized by an alternately sequential addition of different comonomers into a living copolymerization system. − In practice, each addition of new monomer will inevitably make some living chain ends dead because of impurities, resulting in a polymer with a broad distribution in chain length. It is very difficult, if not impossible, to fractionate these multiblock chains because their physical properties, such as solubility, are similar.…”

Section: Introductionmentioning

confidence: 99%