WebUsing these values, the %crystallinity equation given above can be used to calculate approximate the crystalline and amorphous content of the sample. In this case, the area under the crystalline peaks was 470.13 and the total area was 3940. The sample had a crystallinity of 12% (meaning 88% amorphous material. Monica Mahoney WebRefractive Index – the crystal should have a higher index of refraction than the sample. The majority of organic samples have refractive indices in the area of 1.5. Refractive indices of standard ATR crystals span from 2.4 to 4.0 – which in most cases provides sufficient sample to crystal differentiation.
Gemstone Optics: The Basics - International Gem Society
WebOct 11, 2024 · The crystalline index (CrI, %) was determined as follows: where I 110 is the maximum intensity of the diffraction pattern at 20°, and I am is the intensity of amorphous diffraction at 16°. The contact angles of chitosan solutions were determined by handling the images of chitosan droplets on the smooth glass pieces with ImageJ software. WebJan 30, 2015 · The data of analyse was obtained at 40 kV, 30 mA and 2θ with the scanning angle from 5 to 45°. Crystalline index values (CrI) of chitins were calculated according to Formula 2 (below) : (2) I 110 is the maximum intensity at 20 ≈ 19°. I am is the intensity of amorphous diffraction at 20 ≈ 13°. some georgia county records
Characterization of chitin content extracted from edible insect,
http://crystallography.net/cod/browse.html WebApr 12, 2024 · This work aimed to study the thermal and crystalline properties of poly (1,4-phenylene sulfide)@carbon char nanocomposites. Coagulation-processed … WebJan 8, 2014 · The crystalline index values of chitins varied between 76.4 % and 90.6 %. Their surface morphology was examined by SEM, revealing nanofibre structures. These six aquatic invertebrate species with characterized chitin and chitosan structures may be used as alternative chitin and chitosan sources for various technological purposes. some georgia facts