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Influence of processing method and components molecular structure on the phase behaviour of polyethylenes/dye blends
Author(s) -
Pucci Andrea,
Ruggeri Giacomo,
Cardelli Camilla,
Conti Giovanni
Publication year - 2003
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200351209
Subject(s) - materials science , dichroic glass , polyethylene , phase (matter) , polymer blend , differential scanning calorimetry , chemical engineering , polymer , polymer chemistry , composite material , organic chemistry , copolymer , nanotechnology , chemistry , thermodynamics , physics , engineering
The phase dispersion of terthiophene alkyl derivatives on different polyethylene matrices was investigated. The PE affinity toward dichroic dyes with different structure, the effect of blending process and the influence of a polyolefinic compatibilizer on the homogeneity of host‐guest blends were comparatively investigated by calorimetry, DSC and SEM analyses. For these purposes, polyethylenes with different molecular weights and densities and EVAc were used as host matrices. The polymeric compatibilizer was prepared by radical functionalization of a commercial low density polyethylene. The dichroic nature of the guest phase allowed to perform UV‐Vis measurements in polarized light on oriented blend film samples. The dyes affinity toward PE is one of the key factor in obtaining oriented polyolefinic films with high optical performances for several applications.