Our experimental results are in good accord with these predictions: (i) PNP has the least effect on DSC crystallization time; (ii) Spherulitic growth rate measurements indicate that retardation of growth rates is least for PNP, followed by PHBA and is greatest for RES and HYD; (iii) Finally, the increase in lamellar crystal
thickness is least for PNP, followed by PHBA, RES, and HYD.
The additive's ability to create lamellar crystal
orientation of PE in the polymer flow (or machine) direction aids the reduction in shrinkage.
Degree of branch inclusion into the lamellar crystal
for various ethylene/[alpha]-olefin copolymers.
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  (see Fig.
7A are further analyzed to obtain structural information of lamellar crystal
dimensions in the direction normal to the individual diffraction plan, i.
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.
Finally, the incorporated DMP units may be excluded from lamellar crystal
formation, increasing the fraction of amorphous phase in the polymer.
In such cases, nano, acicular, and lamellar crystals
were all clearly visible upon the septal surface; however, fusiform crystals were never observed on septa prepared in this manner.
The chain folding process results in lamellar crystals
with sizes directly proportional to the polymer crystallinity.