Nucleation in Polymer Crystallization

(nBuCp)2ZrCl2‐catalyzed ethylene‐4M1P copolymerization: Copolymer backbone structure, melt behavior, and crystallization

“…60 A balance between thermodynamic and kinetic factors influences the value of n n . 55 a is related to the corresponding weight fraction relative crystallinity a w (T) through the following expression…”

Crystalline structure and thermodynamic analysis of ultra‐low diameter VGCF‐polypropylene nanocomposite monofilaments

“…7. This can be due to: (i) the relative magnitudes of the lamellar surface energy and the enthalpy of fusion, as demonstrated in the Gibbs-Thomson equation; (ii) increase in the volume fraction of the noncrystallizable component [19]: as was found elsewhere [32], the thinning of crystalline lamellae (LP 21 increases) is consistent with the decrease in % crystallinity; and (iii) an addition to the total entropy upon melting derived from the higher orientation of the thinnest monofilaments [16]. Here we observe that the Gibbs-Thomson relation is obeyed by the VGCF loaded filaments within the limited range of melting temperatures.…”

Isoconversional Kinetics by Fast Scanning Calorimetry

“…The Hoffman-Lauritzen theory is based on the assumption of a nucleation barrier for attachment of a polymer molecule at the growth front. Thus lamellar growth is assumed to occur by a nucleation process, called secondary nucleation [20,21,23]. The resulting temperature dependence of the growth rate (G) measured microscopically is expressed as…”