Effect of polymer branching on degradation during inkjet printing

Wheeler, Joseph; Longpré, Amélie; Sells, Daniel O.; McManus, Daryl; Lancaster, Steven; Reynolds, Stuart W.; Yeates, Stephen G.

doi:10.1016/j.polymdegradstab.2016.02.012

Cited by 10 publications

(5 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Note that the binder can be added only after exfoliation as the high shear forces involved in exfoliation cause polymer degradation. 38 With this modified water-based ink we fabricated a heterostructure-based photodetector onto Si/SiO 2 by printing a first graphene line of ≈50 nm thickness at 50 °C. This acts as bottom graphene electrode (Gr B ).…”

mentioning

confidence: 99%

Water-based and biocompatible 2D crystal inks for all-inkjet-printed heterostructures

et al. 2017

Self Cite

View full text Add to dashboard Cite

Exploiting the properties of two-dimensional crystals requires a mass production method able to produce heterostructures of arbitrary complexity on any substrate. Solution processing of graphene allows simple and low-cost techniques such as inkjet printing to be used for device fabrication. However, the available printable formulations are still far from ideal as they are either based on toxic solvents, have low concentration, or require time-consuming and expensive processing. In addition, none is suitable for thin-film heterostructure fabrication due to the re-mixing of different two-dimensional crystals leading to uncontrolled interfaces and poor device performance. Here, we show a general approach to achieve inkjet-printable, water-based, two-dimensional crystal formulations, which also provide optimal film formation for multi-stack fabrication. We show examples of all-inkjet-printed heterostructures, such as large-area arrays of photosensors on plastic and paper and programmable logic memory devices. Finally, in vitro dose-escalation cytotoxicity assays confirm the biocompatibility of the inks, extending their possible use to biomedical applications.

show abstract

mentioning

confidence: 99%

Water-based and biocompatible 2D crystal inks for all-inkjet-printed heterostructures

et al. 2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…This can be partly explained by the significantly lower chain overlap due to the more compact conformation of hyperbranched polymers in solutions relative to linear polymers of comparable molecular weights. However, in those cases the study compounds were poly(methyl methacrylate)s, polyethylenes, six-arm poly(methyl methacrylate)s, and styrene copolymers . It is conceivable that the beneficial effects of hyperbranching are offset by the long chain pendants (increased intramolecular strains and the possibility of increased entanglements), as present in the current work.…”

Section: Resultsmentioning

confidence: 75%

“…Hyperbranched polymers have found utility in a variety of applications, from biomaterials and drug delivery systems − to more applied fields such as wastewater treatment, cellulose functionalization, coatings, inkjet printing, encapsulation technologies, and, last but not least, lubricant additives. The latter is the focus of our work, as viscosity modifiers (VMs) or viscosity index improvers (VIIs) play a major role in the formulation and performance design of multigrade engine oils, hydraulic fluids, transmission fluids, and other oils.…”

Section: Introductionmentioning

confidence: 99%

Polymer Architecture: Does It Influence Shear Stability?

Cosimbescu

Robinson

Page

2018

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Hyperbranched and linear poly(alkyl methacrylate)s with and without polycaprolactone segments were designed and prepared via a core-first strategy, and then evaluated with respect to their rheology and shear stability performance. The focus of this work was to study the effect of architecture on mechanical shear stability, as it relates to lubricant performance. The polymers were prepared from functionalized macroinitiators subsequently subjected to atom transfer radical polymerization (ATRP)/activators regenerated by electron transfer atom transfer radical polymerization (ARGET ATRP) conditions with dodecyl methacrylate and 2-ethylhexyl methacrylate mixtures. As expected, most compounds displayed an increased viscosity index along with increasing molecular weight. The inclusion of polycaprolactone appears to have enhanced the viscosity index in select samples. Although the hyperbranched polymers studied here varied in the number of arms from about 20 to 1 (linear), the data presented supports the empirical understanding that shear stability is mainly influenced by molecular weight and not architecture or topology. The polymers with caprolactone blocks and shorter methacrylate pendants demonstrated a positive effect on the shear stability, as in possessing the lowest permanent shear stability index, 4 times lower than other compounds included in this study as well as the benchmark.

show abstract

“…Additionally, one can notice that the glass transition temperature is significantly lower than the value stated by the manufacturer (105 °C). This might happen due to the molecular weight degradation during sonication and the presence of the residual solvent in the foils. − The latter issue could be resolved by a longer annealing time or by raising the annealing temperature.…”

Section: Resultsmentioning

confidence: 99%

Eco-Friendly Photoactive Foils Based on ZnO/SnO₂-PMMA Nanocomposites with High Reuse Potential

Ćelić

Banić

Jagodić

et al. 2023

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

In the last decades, water pollution from different industries has been one of the largest environmental issues. Many efforts have been made to develop technologies to remove toxic pollutants from the contaminated waters, which are direct threats to the aquatic environment and human health. Among different technologies, heterogeneous catalysis has shown to be very effective for water purification. The main issue regarding this method is the water recovery after the treatment, which is a very expensive and laborious procedure but can be addressed by the immobilization of photocatalytic particles on the support material. Here, we present efficient and green technology for water purification based on ZnO/SnO 2 -poly(methyl methacrylate) (PMMA) nanocomposite foils utilizing superior photocatalytic properties of coupled ZnO and SnO 2 photocatalysts. We investigated the influence of the ZnO/SnO 2 nanoparticle concentration on the removal efficiency of methylene blue dye and found exceptional removal efficiency for even very low ZnO/SnO 2 nanoparticle loadings. The investigated foils were found to be highly reusable, with no change in performance after five successive usages. The composition, optical properties, surface morphology, and surface roughness of the foils were characterized by X-ray diffraction, UV−vis spectroscopy, scanning electron microscopy, and atomic force microscopy. The thermal measurements performed with differential scanning calorimetry suggested the reinforcement effect of ZnO/SnO 2 nanoparticles on the PMMA matrix, which is essential for practical applications of the foils.

show abstract

Effect of polymer branching on degradation during inkjet printing

Cited by 10 publications

References 34 publications

Water-based and biocompatible 2D crystal inks for all-inkjet-printed heterostructures

Water-based and biocompatible 2D crystal inks for all-inkjet-printed heterostructures

Polymer Architecture: Does It Influence Shear Stability?

Eco-Friendly Photoactive Foils Based on ZnO/SnO₂-PMMA Nanocomposites with High Reuse Potential

Contact Info

Product

Resources

About

Effect of polymer branching on degradation during inkjet printing

Cited by 10 publications

References 34 publications

Water-based and biocompatible 2D crystal inks for all-inkjet-printed heterostructures

Water-based and biocompatible 2D crystal inks for all-inkjet-printed heterostructures

Polymer Architecture: Does It Influence Shear Stability?

Eco-Friendly Photoactive Foils Based on ZnO/SnO2-PMMA Nanocomposites with High Reuse Potential

Contact Info

Product

Resources

About

Eco-Friendly Photoactive Foils Based on ZnO/SnO₂-PMMA Nanocomposites with High Reuse Potential