Layered double hydroxide/polyethylene terephthalate nanocomposites. Influence of the intercalated LDH anion and the type of polymerization heating method

Journal Article · Tue Nov 15 04:00:00 EST 2011 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2011.08.017· OSTI ID:21580050

Herrero, M; Martinez-Gallegos, S; Labajos, F M ^[1]; Rives, V ^[1]

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1. GIR-QUESCAT, Departamento de Quimica Inorganica, Universidad de Salamanca, 37008 Salamanca (Spain)

Conventional and microwave heating routes have been used to prepare PET-LDH (polyethylene terephthalate-layered double hydroxide) composites with 1-10 wt% LDH by in situ polymerization. To enhance the compatibility between PET and the LDH, terephthalate or dodecyl sulphate had been previously intercalated in the LDH. PXRD and TEM were used to detect the degree of dispersion of the filler and the type of the polymeric composites obtained, and FTIR spectroscopy confirmed that the polymerization process had taken place. The thermal stability of these composites, as studied by thermogravimetric analysis, was enhanced when the microwave heating method was applied. Dodecyl sulphate was more effective than terephthalate to exfoliate the samples, which only occurred for the terephthalate ones under microwave irradiation. - Graphical abstract: Conventional and microwave heating routes were used to prepare PET-LDH (polyethylene terephthalate-layered double hydroxide) composites with 1-10 wt% LDH by in situ polymerization. To enhance the compatibility between PET and the LDH, terephthalate or dodecyl sulphate was previously intercalated into the LDH. The microwave process improves the dispersion and the thermal stability of nanocomposites due to the interaction of the microwave radiation and the dipolar properties of EG and the homogeneous heating. Highlights: > LDH-PET compatibility is enhanced by preintercalation of organic anions. > Dodecylsulphate performance is much better than that of terephthalate. > Microwave heating improves the thermal stability of the composites. > Microwave heating improves as well the dispersion of the inorganic phase.

• OSTI ID: 21580050
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 11 Vol. 184; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ANIONS
CHARGED PARTICLES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
COHERENT SCATTERING
COMPATIBILITY
COMPOSITE MATERIALS
DIFFRACTION
DISPERSIONS
ELECTROMAGNETIC RADIATION
ELECTRON MICROSCOPY
ESTERS
FOURIER TRANSFORMATION
GRAVIMETRIC ANALYSIS
HEATING
HYDROGEN COMPOUNDS
HYDROXIDES
INFRARED SPECTRA
INTEGRAL TRANSFORMATIONS
INTERACTIONS
IONS
IRRADIATION
MATERIALS
MICROSCOPY
MICROWAVE HEATING
MICROWAVE RADIATION
NANOSTRUCTURES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POLYESTERS
POLYMERIZATION
POLYMERS
QUANTITATIVE CHEMICAL ANALYSIS
RADIATIONS
SCATTERING
SPECTRA
STABILITY
SULFATES
SULFUR COMPOUNDS
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
THERMODYNAMIC PROPERTIES
TRANSFORMATIONS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION