Mechanical and Shape Recovery Characterization of MWCNTs/HNTs-Reinforced Thermal-Responsive Shape-Memory Polymer Nanocomposites

Mechanical and shape recovery characteristics of thermal-responsive shape-memory polyurethane (SMPU) reinforced with two types of reinforcements, multiwalled carbon nanotubes (MWCNTs) and halloysite nanotubes (HNTs), were studied in the present research work. Three weight percentages of reinforcemen...

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Bibliographic Details
Published in:Polymers 2023-01, Vol.15 (3), p.710
Main Authors: Namathoti, Sivanagaraju, Vakkalagadda, Manikanta Ravindra Kumar
Format: Article
Language:English
Subjects:
Carbon
Flexural strength
Graphene
Heat
Injection molding
Manufacturing
Mechanical properties
Medical equipment
Moisture content
Multi wall carbon nanotubes
Nanocomposites
Nanotubes
Polymer industry
Polymers
Polyurethane resins
Polyurethanes
Recovery
Shape memory
Temperature
Tensile strength
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Summary:Mechanical and shape recovery characteristics of thermal-responsive shape-memory polyurethane (SMPU) reinforced with two types of reinforcements, multiwalled carbon nanotubes (MWCNTs) and halloysite nanotubes (HNTs), were studied in the present research work. Three weight percentages of reinforcement (0, 0.5 and 1%) in the SMPU matrix were considered, and the required composite specimens were obtained through injection moulding. Tensile, flexural, impact and shape recovery behaviours were studied experimentally. Further, flexural tests were performed for multiple cycles to understand the specimens' flexural strength variation after shape recovery. The concentration of both reinforcements (MWCNTs and HNTs) considered in the present study significantly improved mechanical properties and shape recovery.
ISSN:2073-4360
2073-4360
DOI:10.3390/polym15030710