Abstract
In this work, five different techniques: dilute solution viscometry, differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), Fourier transform infrared spectroscopy (FT-IR), and scanning electronic microscopy (SEM) were employed in order to evaluate interactions of amorphous poly(vinyl chloride) (PVC) and semi- crystalline poly(ethylene oxide) (PEO) in solution and solid state. The results varied significantly from one experimental technique to another. The positive interactions between the investigated polymers were found over the whole composition range only in solution. However, in the solid state, by DSC and DMA analysis, the positive interactions were found only at elevated PVC content, while FT-IR and SEM analysis could not confirm interactions between the investigated polymers.
Highlights
Poly(ethylene oxide) (PEO) is a semi-crystalline, biocompatible, biodegradable, non-ionic and water-soluble polymer of considerable industrial significance, which finds applications in many different branches of industry.[1]
The addition of poly(vinyl chloride) (PVC) to poly(ethylene oxide) (PEO) exerts a negligible effect on the degree of crystallinity of PEO, indicating that they are likely immiscible over most of the composition range
Positive values of α were found for all investigated PVC/PEOs blends and they were about ten times smaller for PVC blends with PEO of higher molecular weight, indicating that, when low molecular weight peak is shifted from 1096 (PEO1) is used, miscibility in solution could be expected
Summary
Poly(ethylene oxide) (PEO) is a semi-crystalline, biocompatible, biodegradable, non-ionic and water-soluble polymer of considerable industrial significance, which finds applications in many different branches of industry.[1]. In the blend with poly(vinyl chloride) (PVC), it can be used as a thermal energy storage material, and as a host polymer electrolyte in solid state batteries.[2,3,4,5,6] PEO is an organic component in organic-anorganic hybrid material applied in advanced technologies in the field of functional coatings with superior barrier properties. These barrier properties can be used to prevent migration of plasticizers from PVC blood bags. The better understanding of the interactions between these two polymers is very important
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