The effect of molecular weight on thermal characteristics and thermal degradation of poly (ethylene glycol) (PEG) and poly (ethylene oxide)s (PEO) was investigated by differential scanning...

Dynamic Mechanical Analysis (DMA) is one of the most appropriate methods to investigate relaxation events. Polyethylene Glycol (PEG) is a material with multiple industrial uses. Specifically in the pharmaceutical and cosmetic industries it is …

(10) In the context of SPEs, PEO is the most studied polymer host for SPE application in both lithium and sodium batteries (19) for its ability to dissolve high amounts of conductive salt, its low glass transition temperature (Tg ≈ −60 °C), (19) and its broad electrochemical stability window. (21,22) For potassium batteries, SPEs, in general, an...

Dec 9, 2020 · Molecular dynamics (MD) simulations are conducted to systematically benchmark the effects of molecular weight, chain number, and cooling rate on the glass transition temperature (Tg) and...

There is no glass transition temperature Tg; there is a glass transition region. The change from the glassy state into a liquid or a rubbery state is gradual. Tg values are reported by analogy with the melting temperature Tm values so as to represent a. region by a single number.

Glass-transition temperatures (Tg) of branched PEO networks as a function of MPEGM wt % (measured at the onset of the second heating at 20°C min−1). [...] A new type of synthetic pathway—the...

What is Glass Transition Temperature (Tg)? Glass transition temperature is the temperature at which an amorphous polymer changes from a hard/glassy state to a soft/leathery state, or vice versa. Tg is directly related to a material’s strength and …

In this paper, we have addressed the question of the dynamic miscibility in a blend characterized by very different glass-transition temperatures, Tg, for the components: poly(ethylene oxide) and poly(methyl methacrylate) (PEO/PMMA).

What is glass transition temperature (Tg)? What are the units of glass transition temperature? Which type of polymers undergo glass transition? What are the examples of polymers with high or low Tg? What is the difference between Tg and Tm? Why is it important to identify the Tg of polymers? What are the factors affecting Tg?

Jan 3, 2000 · We have examined whether any relations exist between various quantities such as the conductivity, particle size, glass transition temperature (Tg), melting temperature (Tm) of PEO, and heat of melting. For 30 different species, we found a correlation only between Tg and Tm.