Layered double hydroxide/polyethylene terephthalate nanocomposites. Influence of the intercalated LDH anion and the type of polymerization heating method
- 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, Vol. 184, Issue 11; Other Information: DOI: 10.1016/j.jssc.2011.08.017; PII: S0022-4596(11)00457-9; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ANIONS
COMPATIBILITY
COMPOSITE MATERIALS
DISPERSIONS
FOURIER TRANSFORMATION
HYDROXIDES
INFRARED SPECTRA
INTERACTIONS
IRRADIATION
MICROWAVE HEATING
MICROWAVE RADIATION
NANOSTRUCTURES
POLYESTERS
POLYMERIZATION
STABILITY
SULFATES
THERMAL GRAVIMETRIC ANALYSIS
THERMODYNAMIC PROPERTIES
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
CHARGED PARTICLES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
COHERENT SCATTERING
DIFFRACTION
ELECTROMAGNETIC RADIATION
ELECTRON MICROSCOPY
ESTERS
GRAVIMETRIC ANALYSIS
HEATING
HYDROGEN COMPOUNDS
INTEGRAL TRANSFORMATIONS
IONS
MATERIALS
MICROSCOPY
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POLYMERS
QUANTITATIVE CHEMICAL ANALYSIS
RADIATIONS
SCATTERING
SPECTRA
SULFUR COMPOUNDS
THERMAL ANALYSIS
TRANSFORMATIONS