TY - JOUR
T1 - Comparing the compatibility of various functionalized polypropylenes with thermoplastic polyurethane (TPU)
AU - Lu, Qi Wei
AU - Macosko, Christopher W.
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2004/3
Y1 - 2004/3
N2 - Three functionalized polypropylenes (PP), a maleated PP (PP-g-MA), primary amine functionalized PP (PP-g-NH2), and secondary amine functionalized PP (PP-g-NHR), were melt blended with a thermoplastic polyurethane (TPU) at different compositions. Compatibility of each functionalized PP with TPU was compared by investigating the binary blends using rheological (mixer torques, dynamic shear rheometry), thermal (dynamic mechanical analysis), mechanical (tensile test), and morphological (scanning electron microscopy with image analysis, particle size analysis) measurements. Compatibility of the three functionalized PP's with TPU is ranked in a decreasing order as follows: PP-g-NHR≥PP-g-NH2≫PP-g-MA, which is attributed to higher reactivity of amine (primary and secondary) with urethane linkages. Accordingly, the TPU blends with the two types of amine functionalized PP's exhibited much better synergy, as reflected by much improved mechanical properties including higher tensile strength and ultimate elongation, and finer and more stable morphologies.
AB - Three functionalized polypropylenes (PP), a maleated PP (PP-g-MA), primary amine functionalized PP (PP-g-NH2), and secondary amine functionalized PP (PP-g-NHR), were melt blended with a thermoplastic polyurethane (TPU) at different compositions. Compatibility of each functionalized PP with TPU was compared by investigating the binary blends using rheological (mixer torques, dynamic shear rheometry), thermal (dynamic mechanical analysis), mechanical (tensile test), and morphological (scanning electron microscopy with image analysis, particle size analysis) measurements. Compatibility of the three functionalized PP's with TPU is ranked in a decreasing order as follows: PP-g-NHR≥PP-g-NH2≫PP-g-MA, which is attributed to higher reactivity of amine (primary and secondary) with urethane linkages. Accordingly, the TPU blends with the two types of amine functionalized PP's exhibited much better synergy, as reflected by much improved mechanical properties including higher tensile strength and ultimate elongation, and finer and more stable morphologies.
KW - Amine functionalized polypropylene
KW - Reactive compatibilization
KW - Thermoplastic polyurethane (TPU)
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U2 - 10.1016/j.polymer.2003.12.077
DO - 10.1016/j.polymer.2003.12.077
M3 - Article
AN - SCOPUS:1242306239
VL - 45
SP - 1981
EP - 1991
JO - Polymer
JF - Polymer
SN - 0032-3861
IS - 6
ER -