Influence of electron beam irradiation on the microrheology of incompatible polymer blends: Thread break-up and coalescence

Journal Article · Tue Jan 01 00:00:00 EST 1991 · Journal of Rheology; (USA)

DOI:https://doi.org/10.1122/1.550209· OSTI ID:5997172

van Gisbergen, J G.M.; Meijer, H E.H. ^[1]

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1. Department of Polymer Technology, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands (NL)

The microrheology of polymer blends as influenced by crosslinks induced in the dispersed phase via electron beam irradiation, is systematically investigated for the model system polystyrene/low density polyethylene (PS/LDPE). Both break-up of threads and coalescence of particles are delayed to a large extent, but are not inhibited completely and occur faster than would be expected for a nonirradiated material with a comparable viscosity. Small amplitude, dynamic rheological measurements indicated that in the irradiated materials a yield stress could exist. In contrast, direct microrheological measurements showed that this yield stress, which would prevent both break-up and coalescence, could not be realized by EB irradiation. Apparently, the direct study of the microrheology of a blend system is important for the prediction of the development of its morphology and it is not possible to rely only on rheological data obtained via other methods.

• OSTI ID: 5997172
• Journal Information: Journal of Rheology; (USA), Vol. 35:1; ISSN 0148-6055
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
POLYETHYLENES
PHYSICAL RADIATION EFFECTS
RHEOLOGY
POLYSTYRENE
BINARY MIXTURES
ELECTRON COLLISIONS
MORPHOLOGY
COLLISIONS
DISPERSIONS
MATERIALS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYMERS
POLYOLEFINS
POLYVINYLS
RADIATION EFFECTS
SYNTHETIC MATERIALS
360605* - Materials- Radiation Effects