degree of crystallinity

degree of crystallinity

[di′grē əv ‚kris·tə′lin·əd·ē]
(organic chemistry)
In a fairly large sample of a polymer, the fraction that consists of regions showing long-range three-dimensional order.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Degree of crystallinity for polymer blends with PLA was calculated on the basis of melting enthalpy, according to the formula [16]:
Figure 7 show the variations in the crystallization temperature ([T.sub.co], [T.sub.c]), in the Tm and a decrease in the degree of crystallinity of PP/S/PP-g-AAm blend (90/10/1).
"The degree of crystallinity of organic matter in Y-793261 shows that it did not undergo thermal metamorphism [change in chemical makeup]," Timothy Jay Fagan, co-author of the study, said in a (https://www.waseda.jp/top/en-news/60739) statement .
Anything that can alter the energy content in the polymer, such as screw rotation speed or backpressure, can also affect the rate of cooling and therefore the degree of crystallinity.
We manipulate the dope solution temperature to lower its degree of crystallinity. It is hypothesized that high dope solution temperature increases the rate of solvent and nonsolvent exchanges to expedite liquid-liquid demixing and restrict crystallization.
The degree of crystallinity of the cellulose from the thermally treated and untreated wood samples is shown in Figures 5 and 6.
The degree of crystallinity (crystalline ratio) is very important for a polymer material degradation point of view and it is known that the amorphous parts degrade preferably.
It is concluded from the above study that, 100% cotton fabric significantly lose its degree of crystallinity (crystallinity %) during caustic scouring, bleaching and mercerization due to chemical degradation and elevated temperature impact, while desizing has no significant effect on crystallinity % (CI).
The piezoelectric polymer is crystalline, with a high degree of crystallinity and orientation.
The degree of crystallinity of SONs was determined by calculating the ratio of SON enthalpy to stearic acid enthalpy as shown by the following equation:
The crystalline structure also influences the mechanical behaviour, in the fact that an increasing degree of crystallinity leads to a higher degree of stiffness [23].
The degree of crystallinity of the film annealed at 150[degrees]C is higher due to the higher annealing temperature.