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The value of Tg depends heavily on the mobility of the polymer chain, and for most synthetic polymers lies between 170°K and 500°K (-103°C and 227°C). Pure crystalline polymers do not have a glass transition temperature because the glass transition temperature is only applicable to amorphous polymers.
kunal
Wiki User
∙ 16y agoI think it relates to the point at which a polymer will melt to the point it will flow, but not 100% sure.
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Define penetration index and show how it is related to temperature susceptibility?
high penetration index shows low temperature susceptibility, low penetration index shows high temperature suspectibility.
How would you define viscosity - index?
The viscosity index refers to the measure of the change of viscosity with a change in temperature.
Which index enables us to define an index on columns of two or more tables?
join index
What is the index that combines air temperature and relative humidity to determine an apparent temperature?
Heat Index.
Define the human poverty index?
The human poverty index is a collection of statistics set to measure the human condition. The different statistics are combined to make the index.
When humidity is 80 and temperature is 85 what is heat index?
It's approximately 97 degrees.Related Information:At any temperature, the higher the humidity, the higher the heat index is.
Why is it advisable to correct the measured refractive index for temperature?
The refractive index is a physical property of the medium that depends on the wavelength of the light, and the temperature. The temperature needs to be specified, and is usually 20 or 25 degree Celsius. The refractive index decreases with increasing temperature, and for most organic compounds one can correct for the temperature.
How temperature affect fibers?
it changes its refractive index.
How and why does temperature affect the refractive index of a liquid?
Yes, the refractive index of a liquid often is different at different temperatures (usually negative; e.g. It goes down as temperature goes up), although typically the effect is very nominal. However, that is not to say that there is a constant relationship between Ref index & temperature. Refractive index is proportional to the square roots of electrical permittivity and magnetic permeability. These factors may change with temperature, but not linearly, and therefore RI does not have a simple relationship with temperature.
How is T-score related to stiffness index in bone mineral density test?
The T-score is related to the Stiffness Index, because the Index is used to determine the T-score. This is an expression of structure, strength, and density.
The heat index indicates?
The heat index combines air temperature and relative humidity to determine how hot it feels outside.
Heat index indicates?
The heat index combines air temperature and relative humidity to determine how hot it feels outside.
