Compatibilization of polypropylene/high‐density polyethylene blends using poly(propylene‐co‐ethylene)

Ternary blends of polypropylene (PP), high‐density polyethylene (HDPE), and a random copolymer with 85% propylene and 15% ethylene (trade name Vistamaxx 6202, abbreviated here as VM) have been investigated to elucidate the efficiency of this additive in the management of recycling streams. Different...

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Bibliographic Details
Published in:Journal of applied polymer science 2023-04, Vol.140 (15), p.n/a
Main Authors: Darweesh, Mohamed H., Stoll, Bernhard, El‐Taweel, Safaa H.
Format: Article
Language:English
Subjects:
blends
compatibilizer
Copolymers
Crystallization
differential scanning calorimetry
High density polyethylenes
high‐density polyethylene PE
Impact strength
Materials science
mechanical properties
Optical microscopy
polarized optical microscopy
poly(propylene‐co‐ethylene) Vistamaxx
Polymer blends
Polymers
Polypropylene
polypropylene PP
PP/HDPE
Recycling
stress–strain
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Summary:Ternary blends of polypropylene (PP), high‐density polyethylene (HDPE), and a random copolymer with 85% propylene and 15% ethylene (trade name Vistamaxx 6202, abbreviated here as VM) have been investigated to elucidate the efficiency of this additive in the management of recycling streams. Differential scanning calorimetry showed that VM will induce simultaneous crystallization of PP and HDPE. Polarized Optical Microscopy revealed a breakdown in the spherulitic structure already at 10% of additive (for blends with ratio PP: HDPE = 1:1), respectively 17%, (for PP/HDPE = 7:3). A similar threshold was found in the impact strength, and stress–strain‐curves. This means that VM is also advantageous for recycling of PP: HDPE blends, especially those with high PP content.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.53687