Use of Triazolinedione Click Chemistry for Tuning the Mechanical Properties of Electrospun SBS-Fibers

2015 ◽  
Vol 48 (18) ◽  
pp. 6474-6481 ◽  
Author(s):  
Sam van der Heijden ◽  
Kevin De Bruycker ◽  
Robin Simal ◽  
Filip Du Prez ◽  
Karen De Clerck
Keyword(s):  
Mechanical Properties ◽  
Click Chemistry

Model Polyelectrolyte Gels Synthesized by End-Linking of Tetra-Arm Polymers with Click Chemistry: Synthesis and Mechanical Properties

2014 ◽  
Vol 47 (21) ◽  
pp. 7573-7580 ◽  
Author(s):  
Kazuyuki Oshima ◽  
Taku Fujimoto ◽  
Erina Minami ◽  
Yoshiro Mitsukami
Keyword(s):  
Mechanical Properties ◽  
Click Chemistry ◽  
Polyelectrolyte Gels ◽  
End Linking

scholarly journals Microfluidic Fabrication of Click Chemistry-Mediated Hyaluronic Acid Microgels: A Bottom-Up Material Guide to Tailor a Microgel’s Physicochemical and Mechanical Properties

Polymers ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1760
Author(s):  
Thomas Heida ◽  
Oliver Otto ◽  
Doreen Biedenweg ◽  
Nicolas Hauck ◽  
Julian Thiele
Keyword(s):  
Mechanical Properties ◽  
Hyaluronic Acid ◽  
Click Chemistry ◽  
Cell Biology ◽  
Click Reaction ◽  
Droplet Microfluidics ◽  
Natural Polymers ◽  
Bottom Up ◽  
Multiple Binding Sites ◽  
Thermo Stability

The demand for tailored, micrometer-scaled biomaterials in cell biology and (cell-free) biotechnology has led to the development of tunable microgel systems based on natural polymers, such as hyaluronic acid (HA). To precisely tailor their physicochemical and mechanical properties and thus to address the need for well-defined microgel systems, in this study, a bottom-up material guide is presented that highlights the synergy between highly selective bio-orthogonal click chemistry strategies and the versatility of a droplet microfluidics (MF)-assisted microgel design. By employing MF, microgels based on modified HA-derivates and homobifunctional poly(ethylene glycol) (PEG)-crosslinkers are prepared via three different types of click reaction: Diels–Alder [4 + 2] cycloaddition, strain-promoted azide-alkyne cycloaddition (SPAAC), and UV-initiated thiol–ene reaction. First, chemical modification strategies of HA are screened in-depth. Beyond the microfluidic processing of HA-derivates yielding monodisperse microgels, in an analytical study, we show that their physicochemical and mechanical properties—e.g., permeability, (thermo)stability, and elasticity—can be systematically adapted with respect to the type of click reaction and PEG-crosslinker concentration. In addition, we highlight the versatility of our HA-microgel design by preparing non-spherical microgels and introduce, for the first time, a selective, hetero-trifunctional HA-based microgel system with multiple binding sites. As a result, a holistic material guide is provided to tailor fundamental properties of HA-microgels for their potential application in cell biology and (cell-free) biotechnology.

New polyols with isocyanuric structure by thiol-ene “click” chemistry reactions

2016 ◽  
Vol 53 (6) ◽  
pp. 639-662 ◽  
Author(s):  
Ram K Gupta ◽  
M Ionescu ◽  
X Wan ◽  
D Radojcic ◽  
N Bilic
Keyword(s):  
Mechanical Properties ◽  
Click Chemistry ◽  
Flame Retardancy ◽  
Reaction Rates ◽  
Polyurethane Foams ◽  
Storage Tanks ◽  
Rigid Polyurethane Foams ◽  
High Yields ◽  
Pu Foams ◽  
Very High

New polyols with isocyanuric structure were synthesized by thiol-ene “click” chemistry of triallyl isocyanurate with 1-thioglycerol and 2-mercaptoethanol. The synthesized polyols, prepared with high reaction rates and in very high yields, were chemically and structurally characterized. These polyols were used for the preparation of rigid polyurethane foams with excellent physical–mechanical properties and inherent flame retardancy. By alkoxylation of isocyanuric polyols with propylene oxide and/or ethylene oxide in a self-catalytic process, odorless polyols with lower hydroxyl numbers and lower viscosities were obtained, leading to PU foams with good properties, but without inherent flame retardancy. The synthesized polyols with isocyanuric structure are suitable for the preparation of all types of rigid polyurethane foams, including thermoinsulation of freezers, buildings, storage tanks and pipes for the food and chemical industry, for packaging, and as wood substitutes.

Pluronic F127 gels fabricated by thiol–ene click chemistry: preparation, gelation dynamics, swelling behaviors and mechanical properties

2019 ◽  
Vol 76 (12) ◽  
pp. 6049-6061 ◽  
Author(s):  
Bo Yan ◽  
Hongwei Zhou ◽  
Jialiang Lai ◽  
Zhiwen Wang ◽  
Chunyan Luo ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Click Chemistry ◽  
Pluronic F127 ◽  
Swelling Behaviors

Structure and mechanical properties of crosslinked glycidyl azide polymers via click chemistry as potential binder of solid propellant

2014 ◽  
Vol 131 (16) ◽  
pp. n/a-n/a ◽  
Author(s):  
Chong Hu ◽  
Xiang Guo ◽  
Yihan Jing ◽  
Jun Chen ◽  
Chao Zhang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Click Chemistry ◽  
Solid Propellant ◽  
Glycidyl Azide

Effect of Click-Chemistry Approaches for Graphene Modification on the Electrical, Thermal, and Mechanical Properties of Polyethylene/Graphene Nanocomposites

2013 ◽  
Vol 46 (22) ◽  
pp. 8980-8987 ◽  
Author(s):  
Marta Castelaín ◽  
Gerardo Martínez ◽  
Carlos Marco ◽  
Gary Ellis ◽  
Horacio J. Salavagione
Keyword(s):  
Mechanical Properties ◽  
Click Chemistry ◽  
Thermal And Mechanical Properties ◽  
Graphene Nanocomposites

Synthesis of High Strength and Well-Defined PEG-Based Hydrogel Networks via Click Chemistry

2011 ◽  
Vol 304 ◽  
pp. 131-134
Author(s):  
Fang Yao ◽  
Xiao Xia Ji ◽  
Bao Ping Lin ◽  
Guo Dong Fu
Keyword(s):  
Mechanical Properties ◽  
Click Chemistry ◽  
High Strength

Click Chemistry was used to synthesize a series of PEG-based hydrogel networks. Attributable to the controlled nature and the quantitative yields of Click Chemistry, the prepared PEG-based hydrogels have the well-defined structures, which resulted in the improved mechanical properties and the high swelling ratios of hydrogels

Phase Transformations in Ti-7w/oMo-3w/oMe Alloy

1974 ◽  
Vol 32 ◽  
pp. 514-515
Author(s):  
S. Fujishiro
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Transmission Electron Microscopy ◽  
Tensile Strength ◽  
Mechanical Processing ◽  
Ray Method ◽  
X Ray ◽  
Transmission Electron ◽  
Water Quench ◽  
Alpha Beta

The mechanical properties of three titanium alloys (Ti-7Mo-3Al, Ti-7Mo- 3Cu and Ti-7Mo-3Ta) were evaluated as function of: 1) Solutionizing in the beta field and aging, 2) Thermal Mechanical Processing in the beta field and aging, 3) Solutionizing in the alpha + beta field and aging. The samples were isothermally aged in the temperature range 300° to 700*C for 4 to 24 hours, followed by a water quench. Transmission electron microscopy and X-ray method were used to identify the phase formed. All three alloys solutionized at 1050°C (beta field) transformed to martensitic alpha (alpha prime) upon being water quenched. Despite this heavily strained alpha prime, which is characterized by microtwins the tensile strength of the as-quenched alloys is relatively low and the elongation is as high as 30%.

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