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Reactive compatibilization of polyolefin/PET blends by melt grafting with glycidyl methacrylate
Author(s) -
Pazzagli Federico,
Pracella Mariano
Publication year - 2000
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 - 10.1002/1521-3900(200001)149:1<225::aid-masy225>3.0.co;2-8
Subject(s) - glycidyl methacrylate , high density polyethylene , compatibilization , materials science , grafting , polyolefin , polyethylene , composite material , polymer blend , monomer , fourier transform infrared spectroscopy , polymer chemistry , chemical engineering , copolymer , polymer , layer (electronics) , engineering
The melt free radical grafting of glycidyl methacrylate (GMA) onto high‐density polyethylene (HDPE) was carried out in Brabender internal mixer. The GMA content of the grafted HDPE (HDPE‐ g ‐GMA) was determined through FTIR by means of a calibration curve. The influence of reaction procedure, radical initiator concentration and addition of a co‐monomer (styrene) on the grafting efficiency was examined. Blends of poly(ethylene terephthalate) (PET) with HDPE and HDPE‐ g ‐GMA (75/25 w/w) were prepared by melt mixing in internal mixer. The morphology of the blends was then analysed by SEM microscopy. PET/HDPE‐ g ‐GMA blends displayed improved phase dispersion and interfacial adhesion as compared to unfanctionalized PET/HDPE blend.