Thermal and mechanical properties of homogeneous ternary nanocomposites of regioregular poly(3-hexylthiophene)-wrapped multiwalled carbon nanotube dispersed in thermoplastic polyurethane: Dynamic- and thermomechanical analysis

An interesting correlation between initial loading and nature of wrapping of regioregular poly(3‐hexylthiophene) (rrP3HT) on multiwalled carbon nanotube and their combined effect on dynamic‐ and thermomechanical properties in ternary system (thermoplastic polyurethane as matrix) is highlighted. Wrap...

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Bibliographic Details
Published in:Journal of applied polymer science 2013-05, Vol.128 (3), p.2109-2120
Main Authors: Saha, Suparna, Saha, Uttam, Singh, Jyoti Prakash, Goswami, Thako Hari
Format: Article
Language:English
Subjects:
Applied sciences
Blends
Composites
conducting polymers
differential scanning calorimetry (DSC)
Exact sciences and technology
Forms of application and semi-finished materials
glass transition
graphene and fullerenes
Materials science
Nanocomposites
nanotubes
Penetration
Polymer blends
Polymer industry, paints, wood
Polymers
Polyurethane resins
Technology of polymers
Thermomechanical analysis
Thermoplastic resins
Wrapping
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Summary:An interesting correlation between initial loading and nature of wrapping of regioregular poly(3‐hexylthiophene) (rrP3HT) on multiwalled carbon nanotube and their combined effect on dynamic‐ and thermomechanical properties in ternary system (thermoplastic polyurethane as matrix) is highlighted. Wrapping of rrP3HT on carbon nanotube (CNT) makes the hexyl side chains thermally nonequivalent and composites more stable. Dynamic‐ and thermomechanical analysis ascertained the miscibility (single Tg = −40°C), large mechanical reinforcement, and improved storage modulus of nanocomposites in the presence of CNT compared to its blends. Two breaks at ∼ −100 and ∼ −40°C for TPU‐P3HT composites (PHs) and TPU‐P3HT‐MWCNT composites (PHCs) in the loss modulus vs. temperature plot indicates two different types of transitions in P3HT chains. Dimensional stability by expansion probe technique measures low coefficient of thermal expansion of PHCs compared to its blends. Softening property by penetration probe technique suggests that 2.5 wt % loading of P3HT exhibits lowest degree of penetration compared to other nanocomposites. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
ISSN:0021-8995
1097-4628
DOI:10.1002/app.38397