crystallinity


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Related to crystallinity: degree of crystallinity

crystallinity

[‚kris·tə′lin·əd·ē]
(crystallography)
The quality or state of being crystalline.
(organic chemistry)
The degree to which polymer molecules are oriented into repeating patterns.
(petrology)
Degree of crystallization exhibited by igneous rock.
References in periodicals archive ?
Percent crystallinity was calculated from the measured enthalpy of fusion and the theoretical enthalpy of fusion for 100% crystalline PEEK, which was taken as 130 J/g [4, 6, 8].
The objective of this study was to evaluate the effect of thermal treatment on functional groups and the degree of cellulose crystallinity of eucalyptus wood, as well as to propose mechanisms whereby thermal treatment enhances the properties of the wood in our previous work (Cheng et al.
All the above mentioned studies reported on one specific process treatment (surface modification) not on the complete processing stages (from grey fabric to finish) to analyse the gradual decreasing or increasing trend of crystallinity which directly relates with the strength of cotton fabric.
Figure 2 exhibited, the untreated fibers having the least crystallinity index of 65.
For processors, the copolymer grades are attractive because of the lower process temperature associated with lower crystallinity and also a wider process window.
Based on DSC (differential scanning calorimeter) characterization, performed on a Q100 DSC from TA instruments, PHO has a melting peak at 63[degrees]C, crystallinity of 15%,1 and a Tg at -38[degrees]C (first heating scan); there is no melting transition during the second scan.
The ratio of the crystalline area to that of the total diffracted area was used to determine the relative crystallinity.
Various vibrational spectroscopic techniques, such as near-infrared (NIR), have also been proposed for estimating polymer crystallinity since they are rapid and non-intrusive, they require little or no sample preparation, and provide a wealth of information (Lachenal, 1995).
Values in the risedronate group after 5 years of treatment were also virtually unchanged from baseline: The mean crystallinity ratio was 0.
Polymer-based tissue scaffolds for growing tissues are under development, but the degree of crystallinity on the pore surfaces can strongly affect cell growth.
The polyester also features high crystallinity and dimensional stability, which are ideal for a variety of laminating processes, as well as use in gas and liquid filtration, medical and industrial markets.