PTFE as a toughness modifier of high‐performance PEI/PBT blends: Morphology control during melt processing

High‐performance PEI/PBT blends are brittle because of phase distribution and blends densification. New morphologies developed by adding PTFE to PEI matrix during melt processing favor the toughness improvement of PEI/PBT blends. Ternary PEI/PBT/PTFE processability is not compromised by PTFE additio...

Full description

Saved in:
Bibliographic Details
Published in:Polymers for advanced technologies 2021-02, Vol.32 (2), p.714-724
Main Authors: Vásquez‐Rendón, Mauricio, Álvarez‐Láinez, Mónica Lucía
Format: Article
Language:English
Subjects:
Densification
Elongation
high‐performance polymer blends
Impact modifiers
Impact resistance
interfacial analysis
Mechanical properties
Miscibility
Mixtures
Morphology
morphology control
Nanoparticles
Phase distribution
Polytetrafluoroethylene
PTFE spheroidization
Spheroidizing
Tensile strength
Toughness
toughness modifier
Wetting
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:High‐performance PEI/PBT blends are brittle because of phase distribution and blends densification. New morphologies developed by adding PTFE to PEI matrix during melt processing favor the toughness improvement of PEI/PBT blends. Ternary PEI/PBT/PTFE processability is not compromised by PTFE addition, and miscibility study by modulated differential scanning calorimetry and harmonic mean method shows that PTFE does not interfere with PEI and PBT interaction. Dual‐phase and spore‐like morphologies are formed for both PEI/PBT and PEI/PBT/PTFE blends, and they strongly influenced their mechanical performance. Although tensile strength of ternary blends does not decrease by PTFE addition, elongation at break deteriorates for blends with PEI concentrations
ISSN:1042-7147
1099-1581
DOI:10.1002/pat.5124