Optimization of adhesive performance of waterborne poly(urethane-urea)s for adhesion on high and low surface energy surfaces

Díez-García, Iñigo; Keddie, Joseph L.; Eceiza, Arantxa; Tercjak, Agnieszka

doi:10.1016/j.porgcoat.2019.105495

Cited by 8 publications

(8 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The improvement in mechanical performance of TPU following the inclusion of HNT and modified POSS in smaller amounts resulted from the enhanced compatibility between the polymer matrix and surfaces of the additives. Previous work has shown that surface free energies of TPU, aminopropylisobutyl-POSS and HNT are ~40 mJ/m 2 (Pötschke et al , 2002; Król & Król, 2012; Primel et al , 2017; Díez-García et al , 2020), 60 mJ/m 2 (Turri & Levi, 2005; Misra et al , 2007; Song et al , 2019; Zhang et al , 2019), and 50 mJ/m 2 (Hope & Kittrick, 1964; Owoseni et al , 2015; Cheng et al , 2018), respectively. The narrow range of surface-energy values between phases creates strong adhesion of fillers to the TPU matrix.…”

Section: Resultsmentioning

confidence: 99%

“…Improvement of mechanical performance of TPU by the inclusion of HNT and modified POSS with their lower amounts was arising from the enhanced compatibility between polymer matrix and additive surfaces. According to literature, surface free energies of TPU, aminopropylisobutyl-POSS and HNT are nearly 40 mJ/m 2 (Díez-García et al, 2020;Król & Król, 2012;Pötschke et al, 2002;Primel et al,2017), 60 mJ/m 2 (Misra et al, 2007;Song et al, 2019;Turri & Levi, 2005;Zhang et al, 2019), and 50 mJ/m 2 (Cheng et al, 2018;Hope & Kittrick, 1964;Owoseni et al,2015), respectively. The narrow range of surface energy values between phases donates strong adhesion of fillers to TPU matrix.…”

Section: Mfi Measurementsmentioning

confidence: 99%

See 1 more Smart Citation

Hybrid nanocomposites of elastomeric polyurethane containing halloysite nanotubes and POSS nanoparticles: tensile, hardness, damping and abrasion performance

Mohamed

Tirkeş

Akar³

et al. 2020

Clay miner.

View full text Add to dashboard Cite

Thermoplastic polyurethane (TPU) matrix was reinforced with polyhedral oligomeric silsesquioxane (POSS) and halloysite nanotubes (HNT), both separately and combined. Composite samples were fabricated using a melt-compounding method. Characterization of the composites obtained was performed via tensile and hardness tests, melt-flow index measurements (MFI), abrasion tests, dynamic mechanical analysis (DMA) and scanning electron microscopy (SEM) to investigate the mechanical performance, flow behaviour, tribological characteristics, thermo-mechanical response and morphological properties. The greatest tensile strength value was obtained for the smallest HNT content. Further addition of HNT resulted in agglomerations for both POSS and HNT particles. The shore hardness of TPU was enhanced by filler inclusions. The TPU/POSS composites displayed significant improvement in terms of abrasion resistance compared to TPU at lower loading levels. The DMA study showed that composites containing 0.5% POSS and 1.0% HNT displayed the greatest storage modulus. The glass-transition temperature of TPU shifted to smaller values with the addition of both nanoparticles. The HNT inclusions increased the MFI value of TPU because of their large aspect ratio. Homogeneous mixing of nanoparticles in the TPU matrix was confirmed by a SEM study of the composites. Their dispersion decreased as the concentrations of POSS and HNT increased. An adjuvant effect of POSS with HNT was achieved in their hybrid composites.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Mfi Measurementsmentioning

confidence: 99%

Hybrid nanocomposites of elastomeric polyurethane containing halloysite nanotubes and POSS nanoparticles: tensile, hardness, damping and abrasion performance

Mohamed

Tirkeş

Akar³

et al. 2020

Clay miner.

View full text Add to dashboard Cite

show abstract

“…In the work of both Carelli et al and Wang et al, it was found that a stiffer, more elastic-like surface layer on top of a softer, dissipative layer improved the adhesion. Contrary to this finding, other groups have shown that inverting this orientation can improve adhesion. − Díez-Garcia et al found that casting a liquid-like layer on top of a more solid-like layer allowed for fibrillation to occur during debonding, as was shown by the lengthened stress plateau in probe tack curves, which increased the adhesion energy.…”

Section: Introductionmentioning

confidence: 96%

“…Contrary to this finding, other groups have shown that inverting this orientation can improve adhesion. 14−16 Di ́ez-Garcia et al 16 found that casting a liquid-like layer on top of a more solid-like layer allowed for fibrillation to occur during debonding, as was shown by the lengthened stress plateau in probe tack curves, which increased the adhesion energy.…”

Section: ■ Introductionmentioning

confidence: 99%

Diffusiophoresis-Driven Stratification in Pressure-Sensitive Adhesive Films from Bimodal Waterborne Colloids

Palmer

Kooij

Bakar

et al. 2023

ACS Appl. Polym. Mater.

Self Cite

View full text Add to dashboard Cite

The uses of pressure-sensitive adhesives (PSAs) are wide ranging, with applications including labels, tapes, and graphics. To achieve good adhesion, a PSA must exhibit a balance of viscous and elastic properties. Previous research has found that a thin, elastic surface layer on top of a softer, dissipative layer resulted in greater tack adhesion compared with the single layers. Superior properties were achieved through a bilayer obtained via successive depositions, which consume energy and time. To achieve a multilayered structure via a single deposition process, we have stratified mixtures of waterborne colloidal polymer particles with two different sizes: large poly(acrylate) adhesive particles (ca. 660 nm in diameter) and small poly(butyl acrylate) (pBA) particles (ca. 100 nm). We used two types of pBA within the particles: either viscoelastic pBA without an added cross-linker or elastic pBA with a fully cross-linked network. Stratified surface layers of deuterium-labeled pBA particles with thicknesses of at least 1 μm were found via elastic recoil detection and qualitatively verified via the analysis of surface topography. The extent of stratification increased with the evaporation rate; films that were dried slowest exhibited no stratification. This result is consistent with a model of diffusiophoresis. When the elastic, cross-linked pBA particles were stratified at the surface, the tack adhesion properties made a transition from brittle failure to tacky. For pBA without an added cross-linker, all adhesives showed fibrillation during debonding, but the extent of fibrillation increased when the films were stratified. These results demonstrate that the PSA structure can be controlled through the processing conditions to achieve enhanced properties. This research will aid the future development of layered or graded single-deposition PSAs with designed adhesive properties.

show abstract

“…Waterborne polyurethane (WPU) with tunable flexibility and toughness provides great application values for coatings and adhesives. 1–4 Its ability to resist compact or damage allows it to be used in special areas such as automobiles, aerospace, and architecture. In some cases, WPU must show good usability and long service life as functional protective materials, especially in some critical technology fields when special needs are considered.…”

Section: Introductionmentioning

confidence: 99%

Room temperature self-healing epoxy waterborne polyurethane containing microcapsules with waterborne polyurethane shells and mercaptan cores

2022

View full text Add to dashboard Cite

show abstract

Optimization of adhesive performance of waterborne poly(urethane-urea)s for adhesion on high and low surface energy surfaces

Cited by 8 publications

References 37 publications

Hybrid nanocomposites of elastomeric polyurethane containing halloysite nanotubes and POSS nanoparticles: tensile, hardness, damping and abrasion performance

Hybrid nanocomposites of elastomeric polyurethane containing halloysite nanotubes and POSS nanoparticles: tensile, hardness, damping and abrasion performance

Diffusiophoresis-Driven Stratification in Pressure-Sensitive Adhesive Films from Bimodal Waterborne Colloids

Room temperature self-healing epoxy waterborne polyurethane containing microcapsules with waterborne polyurethane shells and mercaptan cores

Contact Info

Product

Resources

About