Epoxy monomers consolidant for lime plaster cured via a redox activated cationic polymerization

Formia, Alessandra; Tulliani, Jean‐Marc; Antonaci, Paola; Sangermano, Marco

doi:10.1016/j.culher.2014.01.003

Cited by 11 publications

(7 citation statements)

References 16 publications

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“…A special kind of redispersion powder containing a hydrophobic additive was used for the studies, which yielded composites with higher resistance to water. The main goal of the applied hydrophobization was to increase the limit of the surface tension between water and the impregnated material so that the difference should be as high as possible [ 8 , 29 ], according to suggestions presented by Frattolillo et al [ 30 ] and Formia et al [ 31 ].…”

Section: Methodsmentioning

confidence: 99%

Impact of Different Binders on the Roughness, Adhesion Strength, and Other Properties of Mortars with Expanded Cork

et al. 2018

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The aim of the research that is presented in this paper was to evaluate the physical and mechanical properties of heat-insulating mortars with expanded cork aggregates and different binders. In this work, the measurements of surface roughness and adhesion strength, supported by determination of basic mechanical and physical parameters, such as density, bulk density, open porosity, total porosity, absorbability, thermal conductivity coefficient, compressive strength, flexural strength, and frost resistance of mortars containing expanded oak cork, were performed. The scanning electron microscope (SEM) investigations demonstrated the microstructure, contact zone, and distribution of pores in the heat-insulating mortars containing expanded cork. The results indicated that the addition of expanded cork and different binders in heat-insulating mortars triggers changes in their roughness and adhesion strength. The SEM research confirmed the very good adhesion of the paste to the cork aggregate.

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Section: Methodsmentioning

confidence: 99%

Impact of Different Binders on the Roughness, Adhesion Strength, and Other Properties of Mortars with Expanded Cork

et al. 2018

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“…Potentially, RCP synthesis (at RT) of composites containing natural fibers is possible as the CP was already performed using natural fibers/EPOX thermal cationic initiation (>100°C) [313]. The brilliant work by Sangermano et al showed that RCP composites was possible through the EPOX polymerization using a Cu(II)/VitC/ iodonium salt initiating system, the application was the consolidation of lime plaster [314].…”

Section: Redox Synthesis Of Compositesmentioning

confidence: 99%

Redox two-component initiated free radical and cationic polymerizations: Concepts, reactions and applications

Garra

Dietlin

Morlet‐Savary

et al. 2019

Progress in Polymer Science

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Redox polymerizations are of huge importance throughout academic and industrial polymer science. Many authors propose the reaction of reducing (Red) and oxidizing (Ox) agents to accelerate/initiate radical or cationic polymerizations. As a result of activation energies typically below 80 kJ/mol, such reactions can occur under mild conditions, e.g., at room temperature, with reduced energy consumptions and robust in applications, such as the fabrication of composites. However, a clear definition of redox polymerization can only be found in reviews dealing with redox free radical polymerizations (FRP) published twenty years ago (or more). Therefore, a fresh and broader update is provided here for more recent work. The concepts involved when the "Red" and "Ox" agents constituting the redox initiating system are mixed under mild conditions are presented, followed by a discussion of the redox FRP initiating systems in bulk. Initiating systems dealing with the redox cationic polymerization (CP) are reviewed, and parallels between conventional FRP/CP and controlled polymerizations, in which redox systems are used, is provided. Many redox agents are useful in both modes. Finally, dual-cure (redox/photochemical; redox dual FRP/CP) systems is presented and selected applications are reviewed. Altogether, the state of the art for redox two-component polymerizations is provided, along with some perspectives.

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“…At archaeological excavation sites, on-site consolidation is an important and widely applied conservation technique. Inorganic materials such as plaster [1][2][3][4][5] as well as organic synthetic polymers such as polyurethanes [6][7][8][9] , polyacrylates [10][11] and epoxy resins [12][13] are all used to consolidate cultural relics onsite. However, application of these materials are subjected to an obvious drawback that they are very di cult, sometimes even impossible, to be removed afterwards.…”

Section: Introductionmentioning

confidence: 99%

Studies of internal stress induced by solidification of menthol melt as temporary consolidant in archaeological excavations using resistance strain gauge method

Chen

et al. 2020

Preprint

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Volatile organic solids, such as cyclododecane or menthol, have been employed as temporary reinforcement material during archaeological excavations. They are usually applied as melts and reinforcement is achieved once the melts solidify. Such solidification process can induce internal stress on the artifacts, which can be a big concern, especially to those very precious and fragile ones. However, information about such stress is still extremely limited at present. This paper proposes an experimental method based on resistance strain gauge technique to monitor the deformation induced by solidification of menthol melt. Bending tests are performed on very thin glass slides. The solidification process of menthol melt is well characterized by the development of mechanical strains. Then, menthol melts are applied to three kinds of simulated samples, i.e. glass, sandstone and rice paper, to investigate the mechanical response of preserved bodies upon solidification. It is found that menthol melt will generate certain amount expansion or contraction of the objects upon solidification. The stresses induced, evaluated according to obtained strains, are generally quite small, indicating that application of menthol as reinforcement material is safe in mechanics for cultural relics.

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Epoxy monomers consolidant for lime plaster cured via a redox activated cationic polymerization

Cited by 11 publications

References 16 publications

Impact of Different Binders on the Roughness, Adhesion Strength, and Other Properties of Mortars with Expanded Cork

Impact of Different Binders on the Roughness, Adhesion Strength, and Other Properties of Mortars with Expanded Cork

Redox two-component initiated free radical and cationic polymerizations: Concepts, reactions and applications

Studies of internal stress induced by solidification of menthol melt as temporary consolidant in archaeological excavations using resistance strain gauge method

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