Even more important, reducing the mold temperature will reduce the degree of
crystallinity that is achieved within the molded part.
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.
