Mechanical Properties and UV Curing Behavior of Poly(N -Isopropylacrylamide) in Phosphonium-Based Ionic Liquids

2013 ◽  
Vol 214 (7) ◽  
pp. 787-796 ◽  
Author(s):  
Bartosz Ziółkowski ◽  
Zeliha Ates ◽  
Simon Gallagher ◽  
Robert Byrne ◽  
Andreas Heise ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Ionic Liquids ◽  
Uv Curing ◽  
Curing Behavior

scholarly journals Controlling surface chemistry and mechanical properties of metal ionogels through Lewis acidity and basicity

2021 ◽  
Vol 9 (8) ◽  
pp. 4679-4686
Author(s):  
Coby J. Clarke ◽  
Richard P. Matthews ◽  
Alex P. S. Brogan ◽  
Jason P. Hallett
Keyword(s):  
Mechanical Properties ◽  
Ionic Liquids ◽  
Ethylene Glycol ◽  
Surface Chemistry ◽  
Lewis Acidity ◽  
Metal Species ◽  
Poly Ethylene Glycol ◽  
Acidity And Basicity ◽  
Poly Ethylene

Gels prepared from metal containing ionic liquids with cross-linked poly(ethylene glycol) have surface compositions and mechanical properties that can be controlled by Lewis basicity and acidity of the metal species.

Facile fabrication of photoinduced superhydrophobic–superhydrophilic surfaces on cellulose substrate without strength loss

2018 ◽  
Vol 89 (9) ◽  
pp. 1807-1822
Author(s):  
Yunjie Yin ◽  
Yanyan Zhang ◽  
Xiaoqian Ji ◽  
Tao Zhao ◽  
Chaoxia Wang
Keyword(s):  
Mechanical Properties ◽  
Uv Irradiation ◽  
Uv Curing ◽  
Contact Angles ◽  
Curing Process ◽  
Water Contact ◽  
Cellulose Substrate ◽  
Cellulose Substrates ◽  
Uv Curing Process ◽  
Modified Cellulose

A novel strategy was reported on the design and fabrication of functional photosensitive hybrid sols (FPHSs) by non-alcoholic emulsification in the presence of a TiO2 nanoparticle and photoinitiator via a sol-gel process using tetraethylorthosilicate, γ-methacryloxypropyltrimethoxysilane (MPS) and hydrophobic silane coupling agents as precursors. Smart cellulose substrates with alterable superhydrophobic–superhydrophilic conversion were fabricated using FPHS via the ultraviolet (UV) curing process. The liquid FPHS was photocured into solid gel during UV irradiation for 40 s with MPSs in FPHS, which was verified via Fourier transform infrared spectra. The cellulose substrates were modified with FPHSs, and the water contact angles of the modified cellulose substrates were more than 150°. The superhydrophobicity was improved by the gathering of hydrophobic chains and particle deposition of hybrid gel on the fiber surface. Nevertheless, the water contact angles of the modified cellulose substrates were receded with UV irradiation from 158° to 0° in 200 min, due to TiO2 photoinduction. The irradiated cellulose substrates were placed in the dark, and the water contact angles were recovered to about 130°, gradually. What is more, the reversible process can be repeated more than eight times. The modified cellulose substrate presented excellent washing fastness, even suffering 10 times washing processing. The mechanical properties, including breaking strength and elongation rate, were improved after the coating and UV curing process, which considerably remedied the defects of the heating curing process on the mechanical properties.

scholarly journals Hydrogels Containing the Ferri/Ferrocyanide Redox Couple and Ionic Liquids for Thermocells

2019 ◽  
Vol 72 (2) ◽  
pp. 112 ◽  
Author(s):  
Matthew Russo ◽  
Holly Warren ◽  
Geoffrey M. Spinks ◽  
Douglas R. MacFarlane ◽  
Jennifer M. Pringle
Keyword(s):  
Mechanical Properties ◽  
Ionic Liquids ◽  
Solid State ◽  
Waste Heat ◽  
New Technology ◽  
Redox Couple ◽  
Low Grade ◽  
Aqueous Electrolytes ◽  
Hydrogel Network ◽  
Water Based

Thermoelectrochemical cells are a promising new technology for harvesting low-grade waste heat. The operation of these cells relies on a redox couple within an electrolyte, which is most commonly water-based, and improvement of these materials is a key aspect of the advancement of this technology. Here, we report the gelation of aqueous electrolytes containing the K3Fe(CN)6/K4Fe(CN)6 redox couple using a range of different polymers, including polyvinyl alcohol (PVA), sodium carboxymethyl cellulose (Cmc), polyacrylamide (PAAm), and two commercial polyurethane-based polymers: HydroMed D640 and HydroSlip C. These polymers produce quasi-solid-state electrolytes with sufficient mechanical properties to prevent leakage, and allow improved device flexibility and safety. Furthermore, the incorporation of various ionic liquids within the optimized hydrogel network is investigated as a route to enhance the electrochemical and mechanical properties and thermal energy harvesting performance of the hydrogels.

Study on Spinning and Structure Properties of Regenerated TussahSilk/Cellulose Blend Fibers Using Ionic Liquids

2011 ◽  
Vol 236-238 ◽  
pp. 1156-1159 ◽  
Author(s):  
Guo Zengge ◽  
Bo Wen Cheng ◽  
Song Jun ◽  
Gao Lei ◽  
Lu Fei ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Ionic Liquids ◽  
Orthogonal Test ◽  
Blend Fiber ◽  
Structure Properties

In this work, the spinnging process of tussah silk/cellulose blend fiber using ionic liquids as solvent has been studied and the optimum spinning parameters were obtained from the orthogonal test. The structures morphology and properties of blend fibers were investigated through mechanical properties, SEM and FTIR. The result showed that break strength was 1.4124cN/dtex and break elongation was 9.803% in the condition of the optimum spinning parameters.

Poly(ionic liquid)s with controlled architectures and their use in the making of ionogels with high conductivity and tunable rheological properties

2016 ◽  
Vol 7 (43) ◽  
pp. 6608-6616 ◽  
Author(s):  
H. Srour ◽  
M. Leocmach ◽  
V. Maffeis ◽  
A. C. Ghogia ◽  
S. Denis-Quanquin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Rheological Properties ◽  
High Conductivity ◽  
Cross Linking ◽  
Poly Ionic Liquid

We describe the preparation as well as the electrochemical and mechanical properties of a series of novel well-defined poly(ionic liquids) (PILs) featuring a finely tuned cross-linking ratio.

scholarly journals The effect of chemical modification of wood in ionic liquids on the supermolecular structure and mechanical properties of wood/polypropylene composites

Cellulose ◽  
2018 ◽  
Vol 25 (8) ◽  
pp. 4639-4652 ◽  
Author(s):  
Slawomir Borysiak ◽  
Aleksandra Grząbka-Zasadzińska ◽  
Majka Odalanowska ◽  
Andrzej Skrzypczak ◽  
Izabela Ratajczak
Keyword(s):  
Mechanical Properties ◽  
Ionic Liquids ◽  
Chemical Modification ◽  
Supermolecular Structure ◽  
Polypropylene Composites

scholarly journals Reduction of the Coefficient of Friction of Steel-Steel Tribological Contacts by Novel Graphene-Deep Eutectic Solvents (DESs) Lubricants

Lubricants ◽  
2019 ◽  
Vol 7 (4) ◽  
pp. 37 ◽  
Author(s):  
Ignacio Garcia ◽  
Silvia Guerra ◽  
Juan de Damborenea ◽  
Ana Conde
Keyword(s):  
Mechanical Properties ◽  
Ionic Liquids ◽  
Friction Coefficient ◽  
Wear Rate ◽  
Adhesive Wear ◽  
Choline Chloride ◽  
Deep Eutectic Solvents ◽  
The Other ◽  
Graphene Flakes ◽  
The Coefficient Of Friction

Deep eutectic ionic liquids (DES) possess similar properties to conventional ionic liquids (ILs). However, ILs cannot be considered as environmentally friendly compounds due to both its processing and synthesis, which could have significant polluting effects. On the contrary, deep eutectic solvents (DESs) can be biodegradable, non-toxic, and have a lower price than most ILs, making them potentially useful in a wide variety of advanced technological applications, such as tribology. On the other hand, graphene has recently been proposed as an extremely promising lubricant due to its combination of mechanical properties and chemical stability as well as its “green” character. In the present paper, graphene flakes (≈250 nm) have been used as an additive to DES composed of choline chloride (ChCl)-urea, ChCl-ethylene glycol, and ChCl-malic acid. According to the results, the addition of 1 wt% graphene reduces friction coefficient (COF) and, notably, prevents adhesive wear, reducing wear rate on steel-steel sliding contacts.

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