Thermoplastic polyurethane/butylene-styrene triblock copolymer blends: an alternative to tune wear behavior

Agnol, Lucas Dall; Toso, Giulio Tremea; Dias, Fernanda Trindade Gonzalez; Soares, Mariliz Gutterres; Bianchi, Otávio

doi:10.1007/s00289-021-03748-0

Cited by 5 publications

(3 citation statements)

References 36 publications

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“…The most common thermostable polyurethanes are foams, widely used as thermal insulators; among the most common EPUs are those used as adhesives, high-performance sealants, shoe soles, paints, textile fibers, gaskets, and in the construction, furniture, medical, and automotive industries. The characteristic properties of elastomeric PU include high resistance to wear and abrasion, good cushioning capacity, good flexibility at low temperatures, high resistance to fats, oils, oxygen, and ozone, excellent elastic recovery, transparency, and adhesion [ 48 , 49 , 50 , 51 ].…”

Section: Bio-based Polyurethane Elastomersmentioning

confidence: 99%

Recent Developments in Synthesis, Properties, Applications and Recycling of Bio-Based Elastomers

Burelo,

Martínez,

Hernández-Varela

et al. 2024

Molecules

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In 2021, global plastics production was 390.7 Mt; in 2022, it was 400.3 Mt, showing an increase of 2.4%, and this rising tendency will increase yearly. Of this data, less than 2% correspond to bio-based plastics. Currently, polymers, including elastomers, are non-recyclable and come from non-renewable sources. Additionally, most elastomers are thermosets, making them complex to recycle and reuse. It takes hundreds to thousands of years to decompose or biodegrade, contributing to plastic waste accumulation, nano and microplastic formation, and environmental pollution. Due to this, the synthesis of elastomers from natural and renewable resources has attracted the attention of researchers and industries. In this review paper, new methods and strategies are proposed for the preparation of bio-based elastomers. The main goals are the advances and improvements in the synthesis, properties, and applications of bio-based elastomers from natural and industrial rubbers, polyurethanes, polyesters, and polyethers, and an approach to their circular economy and sustainability. Olefin metathesis is proposed as a novel and sustainable method for the synthesis of bio-based elastomers, which allows for the depolymerization or degradation of rubbers with the use of essential oils, terpenes, fatty acids, and fatty alcohols from natural resources such as chain transfer agents (CTA) or donors of the terminal groups in the main chain, which allow for control of the molecular weights and functional groups, obtaining new compounds, oligomers, and bio-based elastomers with an added value for the application of new polymers and materials. This tendency contributes to the development of bio-based elastomers that can reduce carbon emissions, avoid cross-contamination from fossil fuels, and obtain a greener material with biodegradable and/or compostable behavior.

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Section: Bio-based Polyurethane Elastomersmentioning

confidence: 99%

Recent Developments in Synthesis, Properties, Applications and Recycling of Bio-Based Elastomers

Burelo,

Martínez,

Hernández-Varela

et al. 2024

Molecules

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“…The HS segments affect the mechanical characteristics of the TPU, like elasticity, hardness, and tearing strength. 4 The SS and HS segments are thermodynamically incompatible, which leads to a microphase separation in a rubber-like matrix containing rigid microdomains. 5 The melting point for hard and soft segments are different but at sufficiently high temperature both segments melt allowing the processing via injection or extrusion.…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, the hard segment is usually formed by the reaction of diisocyanates and possibly short‐chain diol molecules (see the schematic representation in Figure 1). The HS segments affect the mechanical characteristics of the TPU, like elasticity, hardness, and tearing strength 4 . The SS and HS segments are thermodynamically incompatible, which leads to a microphase separation in a rubber‐like matrix containing rigid microdomains 5 .…”

Section: Introductionmentioning

confidence: 99%

Production of a thermoplastic polyurethane/silver nanoparticles 3D filament with antiviral properties to combat SARS‐CoV‐2

Agnol,

Ornaghi,

Ernzen

et al. 2023

Polymer Engineering & Sci

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Antiviral agents present a propitious alternative to prevent pathogen transmission on various surfaces. In the present study, we successfully synthesized nanocomposites of thermoplastic polyurethanes with silver nanoparticles (TPU/AgNPs) via extrusion. To comprehensively evaluate their potential in antiviral applications, we conducted a thorough analysis of the nanocomposites, encompassing investigations into their chemical structure, physicochemical and mechanical properties, cytotoxicity, antibacterial activity, and antiviral efficacy. Remarkably, the incorporation of AgNPs had no discernible impact on the chemical structure of the materials, ensuring the preservation of essential properties. Moreover, the nanoparticles exhibited remarkable stability within the TPU matrix, with no detectable leaching of AgNPs observed in any of the studied nanocomposites. The nanocomposites demonstrated exceptional antibacterial efficiency, effectively inhibiting bacterial growth while concurrently revealing no cytotoxic effects in vitro for BALB/3 T3 cells. The antiviral performance against SARS‐CoV‐2 proved highly potent, achieving inactivation yields surpassing 99.0%. Leveraging these advantageous attributes, we harnessed the potential of TPU/AgNPs nanocomposites to produce various versatile products, such as cell phone cases and 3D‐printing filaments. In conclusion, this study underscores the immense promise of antiviral TPU/AgNPs nanocomposites, offering new insights into the domains of materials science and infection control, contributing to a healthier and safer future.

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Enhancing friction with additively manufactured surface‐textured polymer composites

Islam,

Beschorner,

Bagheri

2024

Polymer Engineering & Sci

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Increasing rubber's friction on slippery surfaces provides protection against falls; however, surface‐textured composites, despite their potential, remain susceptible to wear. To address this issue, part of our team previously patented a surface‐textured composite made from thermoplastic polymers and microfibers. This study investigates the impact of manufacturing processes and 2D filler, which are known for their hydrophobicity and large surface area. It enhances our patented composite by integrating 2D graphene nanoplatelets (GNP), hexagonal boron nitride (hBN), and fillers like styrene‐butadiene‐styrene (SEBS), and silica, while comparing the properties of composites fabricated via injection molding (IM) and fused filament fabrication (FFF). The results demonstrate that 2D fillers enhance both abrasion resistance and ice friction, while FFF‐fabricated composites consistently exhibit superior properties across all compositions. Notably, hBN‐reinforced samples exhibited hierarchical surface texturing, leading to enhanced abrasion resistance (FFF: 146.63% ± 3.39%; IM: 133.83% ± 6.8%; p = 0.036), and effective ice traction (FFF: 0.58 ± 0.04; IM: 0.54 ± 0.06; p = 0.043). These outperformed ice‐traction properties of all other FFF‐fabricated composites, including a previously patented composite (0.52 ± 0.05) as well as composites with GNP (0.53 ± 0.02), SEBS (0.42 ± 0.05), and hBN + SEBS (0.45 ± 0.02). Additionally, the patented composite produced via FFF exhibited moderate oil traction (0.121 ± 0.001), outperforming others. This study highlights the potential of FFF and 2D fillers to enhance traction and durability in composites.Highlights Surface‐textured composite introduced via additive manufacturing. Abrasion resistance and friction analysis on icy and oily conditions. Reveals the potential for new composite to improve traction and longevity. Highlights the importance of controlled fiber distribution and orientation.

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Thermoplastic polyurethane/butylene-styrene triblock copolymer blends: an alternative to tune wear behavior

Cited by 5 publications

References 36 publications

Recent Developments in Synthesis, Properties, Applications and Recycling of Bio-Based Elastomers

Recent Developments in Synthesis, Properties, Applications and Recycling of Bio-Based Elastomers

Production of a thermoplastic polyurethane/silver nanoparticles 3D filament with antiviral properties to combat SARS‐CoV‐2

Enhancing friction with additively manufactured surface‐textured polymer composites

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