FTIR and thermal analyses of intermolecular interactions in poly(trimethylene terephthalate)/phenoxy blends

Intermolecular interactions in the blends of poly(trimethylene terephthalate)/phenoxy resin of bisphenol A prepared by melt mixing in a microcompounder were studied using Fourier transform infrared (FTIR) spectroscopy and thermal analysis. The FTIR results revealed the characteristic bands of the bl...

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Bibliographic Details
Published in:Polymer engineering and science 2011-03, Vol.51 (3), p.518-525
Main Authors: Farmahini-Farahani, Madjid, Jafari, Seyed-Hassan, Khonakdar, Hosein Ali, Yavari, Ahmad, Melati, Amir
Format: Article
Language:English
Subjects:
Applied sciences
Bands
Bisphenol-A
Blends
Chemical engineering
Chemical properties
Composition
Dynamical systems
Dynamics
Exact sciences and technology
Fourier transform infrared spectroscopy
Hydrogen bonding
Interaction parameters
Methods
Methyl groups
Molecular chemistry
Organic polymers
Physicochemistry of polymers
Polymer blends
Polymeric composites
Polymers
Properties and characterization
Spectrum analysis
Structure, morphology and analysis
Terephthalate
Thermal analysis
Thermal and thermodynamic properties
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Summary:Intermolecular interactions in the blends of poly(trimethylene terephthalate)/phenoxy resin of bisphenol A prepared by melt mixing in a microcompounder were studied using Fourier transform infrared (FTIR) spectroscopy and thermal analysis. The FTIR results revealed the characteristic bands of the blend constituents along with the bands showing interassociated, self‐associated, and nonassociated hydrogen bonding in the blends. It was found that the self‐associated hydrogen bonds in the blends were favorable over the interassociated bonds. On the other hand, using the melting point depression, the interaction parameter of the blends was calculated to be about 0.047. The positive value of the interaction parameter and low degree of interassociated hydrogen bonding in the blends suggest the immiscibility of the blends, which is confirmed by scanning electron microscopy observations as well as dynamic mechanical analysis. However, for chemically reacted compositions, the blends were changed to homogenous systems. POLYM. ENG. SCI., 2011. © 2010 Society of Plastics Engineers
ISSN:0032-3888
1548-2634
DOI:10.1002/pen.21839