Influence of Polyamines and Related Macromolecules on Silicic Acid Polycondensation: Relevance to “Soluble Silicon Pools”?

Spinde, Katrin; Pachis, Konstantinos; Antonakaki, Ioanna; Paasch, Silvia; Brunner, Eike; Demadis, Konstantinos D.

doi:10.1021/cm201988g

Cited by 67 publications

(74 citation statements)

References 123 publications

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“…56 Thus, it appears that the visible inhibition of Si(OH) 4 condensation with polycations can be explained by the stabilization of oligomeric forms of PSA through their complexation with polymers that prevents further aggregation of these oligomers. 178 On the other hand, when a blue molybdenum procedure, elaborated to measure only monomer and dimer of silicic acid is employed, 136 the same team reported acceleration of the condensation with polymeric bases. These ndings imply the importance of the quantication method employed.…”

Section: 135137mentioning

confidence: 99%

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Silicic acid condensation under the influence of water-soluble polymers: from biology to new materials

et al. 2017

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Silicon is among the most abundant elements on the Earth. It occurs in many minerals and plays an important role in several biochemical processes. Some living organisms use silicon dioxide as a substrate for building elements of their bodies. Unicellular diatom algae build frustules from silicon dioxide. The skeleton of siliceous sponges is a silicaprotein composite. Similarly, rice hulls which protect seeds, contain silica as an important component. The living organisms assimilate silicon from the environment in the form of silicic acid. However, the biochemical mechanisms involved in the transformation of silicic acid to solid siliceous materials are still poorly understood.Evidently, condensation of silicic acid in the living organisms proceeds under control of biopolymers and it is important to know how various types of polymers influence the condensation. Bio-inspired chemistry involving the interaction between polymeric silicic acid and functional polymers results in interesting composite materials, including nanoparticles and bulk materials. This review contains a brief description of the mechanism of silicic acid condensation in aqueous medium and also includes a discussion on various precursors of silicic acid. The main focus of the review is on the influence of polymers bearing nitrogen and oxygen-containing functional groups on silicic acid condensation starting from monomer to three-dimensional polymer. Influence of molecular weight of the organic polymer on the condensation and structure of the resulting product is also elaborated. The biological importance of the obtained data and strategies for novel applications of the synthesized composite materials are described in the concluding section of the review. The biomimetic condensation processes open up new vistas for development of novel materials and applications in the biomedical and process industries.

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Section: 135137mentioning

confidence: 99%

“…84,85,102 The same effect is probably dominant in the case of poly(N-methacryloyl-L-histidine), 102 poly(1-vinylpyrrolidone) 136 and PEG.…”

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confidence: 93%

Silicic acid condensation under the influence of water-soluble polymers: from biology to new materials

et al. 2017

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“…At lower silicic acid levels (≤30 µM), the majority of uptake is by SIT-mediated active transport, while at higher concentrations silicic acid enters the cell by diffusion (Thamatrakoln and Hildebrand, 2008;Shrestha and Hildebrand, 2015). The concentration gradient is created by binding of silicic acid to intracellular binding components in the cytoplasm, the character of which remains unknown (Thamatrakoln and Hildebrand, 2008;Spinde et al, 2011). This means that at higher silicic acid levels, diatoms can internally control uptake depending on the rate of silica polymerization in the SDV.…”

Section: Cellular and Molecular Aspects Of Evolutionary Competitionmentioning

confidence: 99%

Competition between Silicifiers and Non-silicifiers in the Past and Present Ocean and Its Evolutionary Impacts

et al. 2018

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Competition is a central part of the evolutionary process, and silicification is no exception: between biomineralized and non-biomineralized organisms, between siliceous and non-siliceous biomineralizing organisms, and between different silicifying groups. Here we discuss evolutionary competition at various scales, and how this has affected biogeochemical cycles of silicon, carbon, and other nutrients. Across geological time we examine how fossils, sediments, and isotopic geochemistry can provide evidence for the emergence and expansion of silica biomineralization in the ocean, and competition between silicifying organisms for silicic acid. Metagenomic data from marine environments can be used to illustrate evolutionary competition between groups of silicifying and non-silicifying marine organisms. Modern ecosystems also provide examples of arms races between silicifiers as predators and prey, and how silicification can be used to provide a competitive advantage for obtaining resources. Through studying the molecular biology of silicifying and non-silicifying species we can relate how they have responded to the competitive interactions that are observed, and how solutions have evolved through convergent evolutionary dynamics.

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“…27,28 Band 2 (−88 ppm), present in the binder, can be attributed to the main contribution of the geopolymer phase. 29 In comparison to the literature on geopolymer materials, the position of the observed chemical shift (band 2) varies slightly.…”

Section: Interaction Between Materialsmentioning

confidence: 99%

Study of the Effect of Siliceous Species in the Formation of a Geopolymer Binder: Understanding the Reaction Mechanisms among the Binder, Wood, and Earth Brick

Gouny

Fouchal²,

Maillard³

et al. 2014

Ind. Eng. Chem. Res.

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International audienceIn building construction, geopolymer binder or mortar can interact with the structural materials and thus modify the binder formation mechanisms. In a geopolymer binder, the availability and amount of siliceous species is a preponderant parameter influencing the nature of networks formed after consolidation. In this study, the interactions between the binder and structural materials (wood and earth bricks) were investigated by 29Si magic angle spinning nuclear magnetic resonance (MAS NMR) and Fourier transform infrared spectroscopy (FTIR) during and after the consolidation. Then, the effect of the amount and nature of the siliceous species available in the reaction medium were analyzed. According to the siliceous species available, it is possible to form different types of materials (hardening or sedimented materials). By corroborating these results with MAS NMR and FTIR analyses, a formation scheme of the binder in contact with the materials was proposed

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Influence of Polyamines and Related Macromolecules on Silicic Acid Polycondensation: Relevance to “Soluble Silicon Pools”?

Cited by 67 publications

References 123 publications

Silicic acid condensation under the influence of water-soluble polymers: from biology to new materials

Silicic acid condensation under the influence of water-soluble polymers: from biology to new materials

Competition between Silicifiers and Non-silicifiers in the Past and Present Ocean and Its Evolutionary Impacts

Study of the Effect of Siliceous Species in the Formation of a Geopolymer Binder: Understanding the Reaction Mechanisms among the Binder, Wood, and Earth Brick

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