lamellar crystal

lamellar crystal

[lə′mel·ər ′krist·əl]
(crystallography)
A polycrystalline substance whose grains are in the form of thin sheets.
References in periodicals archive ?
The additive's ability to create lamellar crystal orientation of PE in the polymer flow (or machine) direction aids the reduction in shrinkage.
The correlation function is analyzed following the method of Strobl and Schneider [58]and we obtain long spacings ([L.sub.B]) and lamellar crystal thicknesses ([I.sub.c]) of 26 nm and 20.6 nm, 29 nm and 23.3 nm, 29 nm and 23.6 nm, 33 nm and 27 nm, and 31 nm and 25.5 nm, respectively for PEO, PEO-PNP, PEO-PHBA, PEO-HYD.
The pure PLA is known to exhibit spherulitic structure, containing stacked lamellar morphology with the long axis of the lamellar crystal running parallel to the spherulite radius (41).
Necessary, but not sufficient condition for the lamellar thickening is the existence of some segmental dynamics within the lamellar crystal, generally called [alpha]-relaxation process (24).
For the pure PEO(200M), spherulite formation with a lamellar crystal morphology alternating amorphous and crystalline phase is observed, in agreement with a reported work [34] (see Fig.
7A are further analyzed to obtain structural information of lamellar crystal dimensions in the direction normal to the individual diffraction plan, i.e., the coherence length.
It should be pointed out that, in principle, the HL theory was derived to describe the growth rate of a lamellar crystal at a specific crystallographic plane.
Samples for TEM were prepared by depositing drops of the lamellar crystal suspension in butanediol onto the carbon-coated, newly cleaved mica.
On the one hand, the secondary crystals may consist in thin lamellar crystals inserted between the primary lamellae (lamellar insertion model), and on the other hand, they could consist in stacks of thin lamellae located in regions between the stacks of primary crystalline lamellae.
[55] investigate the link between configurational chirality and twist sense of lamellar crystals. The twist senses of P(3HB-co-3HV) lamellae with 0 mol% [P(3HB)] and 8mol% 3HV were left-handed, but the ones of P(3HB-co-3HV) with 12 and 40 mol% 3HV were right-handed, which were the same as that of P(3HV).
NPD is characterized to have a unique microtexture usually composed of a mixture of randomly oriented equigranular crystals of a few to several tens of nanometers and lamellar crystals stacked along [111] direction of diamond [7].