Non-isothermal crystallization of a vinyl alcohol–ethylene copolymer studied by DSC and real time WAXS/SAXS scattering

Decorated MCM-41/polyethylene hybrids: Crystalline details and viscoelastic behavior

“…Other interesting feature is that this Figure shows up the presence of a secondary crystallization process. The interest is not the existence of this process since it is commonly seen in polyethylene and derivatives [24][25][26] but the fact that the location of this minor crystallization is strongly dependent on MCM-41 content. This secondary crystallization increases its intensity and is shifted to lower temperatures, i.e., it is slowed down as MCM-41 amount is raised in the hybrid.…”

Crystallization Kinetics of Ethylene Vinyl Alcohol Copolymer Revealed by Fast Scanning Chip Calorimetry Analysis

“…11 This straininduced transformation is characterized by a disruption of the sheet-like structure of the monoclinic form. 10 The crystallization behavior and morphological features of EVOH with 44 mol % of ethylene units 12 and non-isothermal crystallization behavior 3 of EVOH with 38 mol % of ethylene units also have been studied. However, an investigation focused on the crystallization kinetics of EVOH connected with different phases is still out of research.…”

“…1 Different from poly(vinyl alcohol) (PVA), the introduction of the co-monomer of ethylene yields EVOH with a lower melting temperature, which endows this polymer with excellent processability and high resistance to heat degradation. 3 EVOH copolymer is a semicrystalline polymer irrespective of the fraction of each composition. Normally, this copolymer with an ethylene content ranging from 28 to 44 mol % possesses a good balance between the barrier properties and moldability; 4 the ethylene content of EVOH used in the industry can reach a minimum of 24%.…”

“…Due to its extraordinary barrier properties to gases and organic vapors, EVOH gradually became one of the most widely applied packaging materials in the high barrier packaging industry . Different from poly­(vinyl alcohol) (PVA), the introduction of the co-monomer of ethylene yields EVOH with a lower melting temperature, which endows this polymer with excellent processability and high resistance to heat degradation . EVOH copolymer is a semicrystalline polymer irrespective of the fraction of each composition.…”