Trimethylsilylation of natural silicates: useful route toward polysiloxanes

Cervantes, Jorge; Rodríguez-Rodríguez, Elena; Guzmán-Andrade, Juan José; Mendoza-Dı́az, Guillermo; Caudillo-González, Martín; Nájera-Lara, Mónica

doi:10.1023/b:silc.0000046720.89051.39

Cited by 5 publications

(6 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Obtaining MQ copolymers based on cheap natural starting compounds, especially silicates [48,49,50,51,52] and silicic acids and soluble (liquid) glass [53,54,55], which play the role of a tetrafunctional reagent, has been known for a long time and is being developed and used today.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis and Properties of MQ Copolymers: Current State of Knowledge

2017

View full text Add to dashboard Cite

In this review, we discuss currently available studies on the synthesis and properties of MQ copolymers. The data on methods of producing hydrolytic and heterofunctional polycondensation of functional organosilanes as well as the obtaining MQ copolymers based on silicic acids and nature silicates are considered. The ratio of M and Q monomers and the production method determine the structure of MQ copolymers and, accordingly, their physicochemical characteristics. It is shown that the most successful synthetic approach is a polycondensation of organoalkoxysilanes in the medium of anhydrous acetic acid, which reduces the differences in reactivity of M and Q monomers and leads to obtaining a product with uniform composition in all fractions, with full absence of residual alkoxy-groups. The current concept of MQ copolymers is that of organo-inorganic hybrid systems with nanosized crosslinked inorganic regions limited by triorganosilyl groups and containing residual hydroxyl groups. The systems can be considered as a peculiar molecular composites consisting of separate parts that play the role of a polymer matrix, a plasticizer, and a nanosized filler.

show abstract

Section: Resultsmentioning

confidence: 99%

“…A currently popular method is the synthesis of MQ copolymers based on a liquid glass [50,51] where sodium silicate (Na 2 SiO 2 ) m was used as a starting material, which was treated with chloro- [52] or alkoxytriorganosilane as well as with disiloxanes. In the latter case, the process went on according to the Scheme 4.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Properties of MQ Copolymers: Current State of Knowledge

2017

View full text Add to dashboard Cite

show abstract

“…Recently, we reported the potential use of these tailings as a source of QxMy oligosiloxanes. 9 We mention in that report preliminary evidence of the possibility of obtaining the oligosiloxane Q 2 M 6 from reactions of TMS with anorthite. Because anorthite is known to be highly soluble in HCl, it is an excellent candidate for silylation with TMS.…”

Section: Introductionmentioning

confidence: 93%

“…The solid residue was studied previously by XRD and other techniques, and according to these, 9 the main mineralogical phases present are quartz, albite, orthoclase feldspars, calcite, anorthite and chlorite. The solid-state 29 Si MAS NMR spectra of tailings before TMS reaction are shown in Fig.…”

Section: Tailingsmentioning

confidence: 99%

Synthesis of oligosiloxane Q₂M₆ [Q = (SiO_4/2)₄, M = Me₃SiO_2/3] from trimethylsilylation of complex silicates

Caudillo

Pacheco

Cervantes

2006

Applied Organom Chemis

Self Cite

View full text Add to dashboard Cite

Because natural silicates are potential sources of oligosiloxanes of the type QxMy, a collection of natural silicates of similar structure was used to obtain mainly Q 2 M 6 oligosiloxanes by trimethylsilylation. The tailings from silver and gold flotation beneficiation provide an important silicate source. The main silicate phase reactive to trimethylsilylation was found to be anorthite. Other minerals containing silicates with a structure similar to anorthite (labradorite and augite) were also used as a Q 2 M 6 source. This paper presents a full characterization of Q 2 M 6 as well as information related to the residual solids from the TMS reactions.

show abstract

“…539 29 Si solid-state NMR spectroscopy was used to characterise trimethylsilyl derivatives of natural silicates. 540 Resin-bound chalcogenyl silane/germane residues were studied by 1 H/ 29 Si 2-D MAS NMR spectroscopy. 541 29 Si CP/MAS NMR spectroscopy was used to investigate silicon-substituted polysilane, 542,543 and polychloromethylsilane.…”

Section: Aluminiummentioning

confidence: 99%

Solid state NMR spectroscopy

Davidson¹

Spectroscopic Properties of Inorganic and Organometallic Compounds

View full text Add to dashboard Cite

Trimethylsilylation of natural silicates: useful route toward polysiloxanes

Cited by 5 publications

References 3 publications

Synthesis and Properties of MQ Copolymers: Current State of Knowledge

Synthesis and Properties of MQ Copolymers: Current State of Knowledge

Synthesis of oligosiloxane Q₂M₆ [Q = (SiO_4/2)₄, M = Me₃SiO_2/3] from trimethylsilylation of complex silicates

Solid state NMR spectroscopy

Contact Info

Product

Resources

About

Trimethylsilylation of natural silicates: useful route toward polysiloxanes

Cited by 5 publications

References 3 publications

Synthesis and Properties of MQ Copolymers: Current State of Knowledge

Synthesis and Properties of MQ Copolymers: Current State of Knowledge

Synthesis of oligosiloxane Q2M6 [Q = (SiO4/2)4, M = Me3SiO2/3] from trimethylsilylation of complex silicates

Solid state NMR spectroscopy

Contact Info

Product

Resources

About

Synthesis of oligosiloxane Q₂M₆ [Q = (SiO_4/2)₄, M = Me₃SiO_2/3] from trimethylsilylation of complex silicates