Applications of Polyurethane Based Composites and Nanocomposites

Rane, Ajay Vasudeo; Kanny, Krishnan; Abitha, V. K.; Jadhav, Sainath; Mulge, Saket; Thomas, Sabu

doi:10.1016/b978-0-12-804065-2.00020-6

Cited by 8 publications

(5 citation statements)

References 26 publications

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“…Also, some of the synthesized nanocomposites contained nanofiller RGO derived from graphite. Compared to GNP, provided by the commercial manufacturer, but still expensive [38], usage of low-cost laboratory-made RGO is an economical approach to estimating the way towards mass scale production of graphene derivative-based nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

“…Incorporation of these types of nanofillers can extend polyurethane thermoplastic elastomers' property limits, improving the mechanical and tribological performance of common TPU applications like footwear, closure o-rings and seals, adhesives, automotive interiors, and sport and leisure items. There here is a high-potential, still needed investigation for using GNP or RGO containing polyurethane nanocomposites in these technical goods, where electrostatic dissipation ability is of special importance, like conveyer belts and technical fabrics [38][39][40].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Variation of Hard Segment Content and Graphene-Based Nanofiller Concentration on Morphological, Thermal, and Mechanical Properties of Polyurethane Nanocomposites

Strankowski

2018

International Journal of Polymer Science

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This study describes the development of a new class of high-performance polyurethane elastomer nanocomposites containing reduced graphene oxide (RGO) or graphene nanoplatelets (GNP). Two types of polyurethane elastomers with different contents of hard segments (HS) were used as a polymer matrix. The developed nanocomposites were characterized by thermal analysis (DSC, TG), dynamic mechanical testing (DMA), hardness testing, mechanical properties, rheology, FTIR spectroscopy, XRD, and microscopy investigation (TEM, SEM). Morphological investigation confirmed better compatibility of RGO with the polyurethane (PU) matrix compared to GNP. Both applied nanofillers influenced melting and crystallization of the PU matrix. The nonlinear viscoelastic behavior of the nanocomposites (Payne effect) was studied, and the results were compared with theoretical predictions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Variation of Hard Segment Content and Graphene-Based Nanofiller Concentration on Morphological, Thermal, and Mechanical Properties of Polyurethane Nanocomposites

Strankowski

2018

International Journal of Polymer Science

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“…Polyurethanes (PU) are currently among the most extensively used polymers in the world, with an estimated production volume of 29 million tons by 2029 [ 1 ]. Thanks to the wide range of their achievable properties, they have been used in various applications such as adhesives, coatings, foams, and packages [ 2 , 3 , 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Antibacterial Properties of Polyurethane Foams Additivated with Terpenes from a Bio-Based Polyol

et al. 2023

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Water-blown polyurethane (PU) foams were prepared by bio-polyols from epoxidized linseed oils and caprylic acid in combination with toluene diisocianate (TDI). A series of terpenes (menthol, geraniol, terpineol, and borneol), natural compounds with recognized antibacterial properties, were included in the starting formulations to confer bactericidal properties to the final material. Foams additivated with Irgasan®, a broad-spectrum antimicrobial molecule, were prepared as reference. The bactericidal activity of foams against planktonic and sessile E. coli (ATCC 11229) and S. aureus (ATCC 6538) was evaluated following a modified AATCC 100-2012 static method. Menthol-additivated foams showed broad-spectrum antibacterial activity, reducing Gram+ and Gram− viability by more than 60%. Foams prepared with borneol and terpineol showed selective antibacterial activity against E. coli and S. aureus, respectively. NMR analysis of foams leaking in water supported a bactericidal mechanism mediated by contact killing rather than molecule release. The results represent the proof of concept of the possibility to develop bio-based PU foams with intrinsic bactericidal properties through a simple and innovative synthetic approach.

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“…3,4 PU composites can be utilized to prepare functional polymer coatings, solar cells, adhesives, synthetic leather, and sealants. 5,6 PU is formed by the reaction between isocyanate (-NCO) and a polyol (a compound containing hydroxyl groups, -OH), where the isocyanate group and polyol represent the hard segment and soft segments, respectively. 7 However, the raw materials used in the preparation of PU are mainly from petrochemical resources and are toxic to the environment.…”

Section: Introductionmentioning

confidence: 99%

Sunflower oil-based polyurethane/graphene composite: Synthesis and properties

Suthar,

Asare,

Sahu

et al. 2023

Journal of Thermoplastic Composite Materials

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Polyurethane/graphene composites have attracted significant attention featuring their wide applications in automotive interiors, coatings, and leather parts to bioengineering. This research focuses on the facile synthesis of biobased polyurethane (PU) by employing sunflower oil as a renewable resource. The synthesized biobased PU was reinforced with graphene nanoplatelets (GNP) and graphene nanoribbons (GNR) to fabricate composite films by solution-casting technique. By changing the filler content (0.01-0.05 wt%), a series of composite films were prepared. The addition of graphene derivatives to the PU matrix improved the mechanical, thermal, and surface properties of the composites compared to the pristine PU film. The incorporation of GNR and GNP fillers enhanced the storage modulus of polymeric film, as for neat PU, was noted maximum at 892 MPa which increased and noticed a maximum of 1121 MPa and 1487 MPa for 0.02 wt % GNP/PU and GNR/PU composite films, respectively. The tensile strength was obtained at 35 MPa and 14 MPa for 0.02 wt % GNP/PU and 0.01 wt % GNR/PU, as compared to 9.45 MPa for the pure PU film. The morphological studies by atomic force microscopy showed a good distribution of GNR and GNP fillers within the polyurethane matrix. The GNP/PU and GNR/PU composite films displayed excellent chemical resistance to different solvents. This work put forward a great utilization of renewable sunflower oil and graphene derivatives to fabricate PU composites with improved properties for potential applications.

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Applications of Polyurethane Based Composites and Nanocomposites

Cited by 8 publications

References 26 publications

Effect of Variation of Hard Segment Content and Graphene-Based Nanofiller Concentration on Morphological, Thermal, and Mechanical Properties of Polyurethane Nanocomposites

Effect of Variation of Hard Segment Content and Graphene-Based Nanofiller Concentration on Morphological, Thermal, and Mechanical Properties of Polyurethane Nanocomposites

Antibacterial Properties of Polyurethane Foams Additivated with Terpenes from a Bio-Based Polyol

Sunflower oil-based polyurethane/graphene composite: Synthesis and properties

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