A Note on the Influence of Copolymer of Na-Methacrylic Acid and Methacrylic Acid Isobutyl Ester on the Physic-Mechanical Properties of Cement Systems

2016 ◽  
pp. 41-46
Keyword(s):  
Mechanical Properties ◽  
Methacrylic Acid ◽  
Isobutyl Ester

scholarly journals Synthesis and research of photocurable protective coatings on the basis of olygoesteracrylates

2020 ◽  
Vol 7 (4) ◽  
pp. 229-232
Author(s):  
O. A. Karsakova ◽  
M. V. Kuzmin
Keyword(s):  
Mechanical Properties ◽  
Polyethylene Glycol ◽  
Methacrylic Acid ◽  
Protective Coatings ◽  
Physical And Mechanical Properties ◽  
Triethylene Glycol ◽  
Glycol Dimethacrylate ◽  
Triethylene Glycol Dimethacrylate ◽  
Rotary Viscometer ◽  
Acid Esters

In this work, photocurable protective coatings based on methacrylic acid esters have been developed and their physical and mechanical properties have been investigated. The photocurable compositions were obtained by mixing at different ratios the following methacrylic acid esters: polyethylene glycol dimethacrylate 400 and triethylene glycol dimethacrylate ether, polyethylene glycol dimethacrylate 400 and oligourethane dimethacrylate, polyethylene glycol dimethacrylate 400 and pentaerythritol tetraacrylate. For the obtained compositions, the viscosity was studied using a Brookfield rotary viscometer. To initiate polymerization, a mixture of initiators was used: benzoyl peroxide and benzoin. Curing of the obtained compositions was carried out under the influence of UV rays for 2-5 minutes. For photo-cured compositions, their physical and mechanical properties have been studied. It was found that the composition based on polyethylene glycol dimethacrylate modified with triethylene glycol dimethacrylate at a ratio of 70:30 has the highest strength.

Effect of methacrylic acid and pendant vinyl groups on the mechanical properties of highly stretchable core–shell nanostructured films deposited from water

2021 ◽  
Author(s):  
James Turton ◽  
Stephen Worrall ◽  
Muhamad S. Musa ◽  
Amir H. Milani ◽  
Yichao Yao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Methacrylic Acid ◽  
Core Shell ◽  
Nanostructured Films ◽  
Highly Stretchable

The mechanical properties of these highly stretchable, water deposited elastomers can be tuned by varying MAA content and vinyl functionalisation.

Emulsion-templated macroporous polymer/polymer composites with switchable stiffness

2014 ◽  
Vol 86 (2) ◽  
pp. 203-213 ◽  
Author(s):  
Qixiang Jiang ◽  
Angelika Menner ◽  
Alexander Bismarck
Keyword(s):  
Mechanical Properties ◽  
Methacrylic Acid ◽  
Elastic Moduli ◽  
Humidity Sensor ◽  
Crosslinking Density ◽  
Sensor Technology ◽  
Water Interface ◽  
Aqueous Emulsion ◽  
Internal Phase ◽  
Oil Water

Abstract Emulsion templates containing monomers in both emulsion phases were used to manufacture polystyrene-co-divinylbenzene based polymerized high internal phase emulsions (polyHIPEs) which have been reinforced by poly(methacrylic acid) (polyMAA) and poly(dimethyl aminoethyl methacrylate) (polyDMAEMA). The morphology of the hydrogel-filled polyHIPEs is affected by the hydrogels synthesized in the aqueous emulsion phase. The pore structure of polyMAA-filled polyHIPEs is highly interconnected indicating the formation of a methacrylic acid-co-styrene copolymer at the oil/water interface of the emulsion templates during synthesis. However, polyDMAEMA-filled polyHIPEs are predominately closed celled and the pore walls are covered by grafted hydrogel. The ability of the hydrogel-filled polyHIPEs to absorb water decreased with increasing crosslinking density of the hydrogels. The dry hydrogel reinforced the polyHIPE scaffolds possessed higher elastic moduli and crush strengths than the control polyHIPEs. The reinforcing ability of the dry hydrogels was further enhanced by increasing their degree of crosslinking. However, the reinforcement could be “switched off” simply by hydrating the hydrogels. The switchable mechanical properties of the hydrogel-filled polyHIPEs could potentially be utilized in smart humidity sensor technology.

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