Ring-opening polymerization of γ-glycidoxypropyltrimethoxysilane catalyzed by multi-metal cyanide catalyst

Wang, Jingxia; Fan, Xiaodong; Tian, Wei; Wang, Yanli; Li, Juanli

doi:10.1007/s10965-011-9623-5

Cited by 8 publications

(16 citation statements)

References 20 publications

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“…The presence of epoxy groups enables a new pathway to chemically modify the CA films. Beyond that, a cross-linked hybrid matrix is feasible to be achieved by ring-opening reactions of epoxy groups, which in turn can be conducted by exposing the CA-GPTMS films to ultraviolet light, thermal activation or Hydrolysis and condensation reactions of GPTMS were investigated by 29 Si NMR. T n code is used where n indicates the number of bridged Si atoms [23].…”

Section: Resultsmentioning

confidence: 99%

“…There are additional weight loss events starting at 120°C and ending at around 250°C addressed to removal of monomeric physisorbed silanes [30]. For CA-GPTMS composite samples, the main thermal event is due to simultaneous decompositions of GPTMS molecules and neat CA polymer components which have similar decomposition temperature (*370°C) [29]. For CA-GPTMS samples, the residue at 600°C can be associated with the formation of silicon derivatives.…”

Section: Resultsmentioning

confidence: 99%

“…XRD patterns showed that higher amounts of GPTMS turn these films more amorphous (in comparison with the neat CA ones). Spectroscopy results (vibrational spectroscopy, 13 C and 29 Si CP-MAS spectra) suggest that epoxy groups mostly remain intact, and significant amount of methoxysilane groups are available after addition of GPTMS in CA. Decomposition temperature occurs around 374°C for all films.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Multifunctional organic–inorganic hybrids based on cellulose acetate and 3-glycidoxypropyltrimethoxysilane

Silva

Salvi

Santos

et al. 2016

J Sol-Gel Sci Technol

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Organic-inorganic hybrid films have been prepared from cellulose acetate (CA) and 3-glycidoxypropyltrimethoxysilane (GPTMS). Flexible films were fashioned with high relative content of GPTMS (up to 70 wt%) and exhibited high transparency in the visible/near-infrared region. The atomic force microscopy images of hybrid films display the presence of nanometric globular-like domains with size dependent and number dependent of the content of GPTMS. X-ray diffraction (XRD) patterns showed decreasing crystallinity of CA hybrid counterpart with increasing amounts of GPTMS. Spectroscopy results (vibrational spectroscopy FTIR and Raman scattering, 13 C and 29 Si NMR spectra) suggest that epoxy groups mostly remain intact and significant amount of methoxysilane groups is available after addition of GPTMS in CA. From 29 Si NMR results, all compositions showed the presence of non-hydrolized GPTMS molecules or having mono-and disubstituted siloxane bonds. For highest relative content of GPTMS (i.e., 50 wt%), a considerably high amount of nonhydrolized (T 0) is observed. Moreover, the addition of GPTMS leads to an increase in the thermal stability as compared to pure CA. Luminescent films were obtained by incorporating luminescent [Eu(TTA) 3 (H 2 O) 2 ] complex (TTA = thenoyltrifluoroacetonate) into the hybrid films. Spectroscopic parameters did not significantly change with the incorporation of luminescent complex, suggesting application in photonics. The 5 D 0 states quantum efficiency was observed to be the same for the neat complex and the luminescent hybrid film, suggesting a weak interaction with the host.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Multifunctional organic–inorganic hybrids based on cellulose acetate and 3-glycidoxypropyltrimethoxysilane

Silva

Salvi

Santos

et al. 2016

J Sol-Gel Sci Technol

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“…The same results are obtained by authors. 36,43,58 The decrease in thermal stability of the polymer/ Mag-CTA (7 wt%) nanocomposite can be explained perhaps through the absorption of a quantity of excessive CTAB, using in the preparation of Mag-CTA, on the surface of Mag-CTA and cannot be washed off. Moreover, the decrease in thermal stability of the PGPTMS/Mag-CTA(7wt %) nanocomposite also can be explained through the XRD analysis.…”

Section: Resultsmentioning

confidence: 99%

“…Or by ring opening polymerization by multi metal catalyst. 36 These materials are distinguished by their enhanced mechanical strength, thermal stability, and the possibility of manufacturing at less cost for those reasons, they have several important applications in many different fields, as protective layers on organic polymers, membranes, 37 anticorrosion coatings, chemical filters, plastics for space applications, in the optical field as optical waveguides, 38,39 optical limiting, 40,41 optical amplification, 42 and they are the bases for new types of contact lens. 43 During the last decade, (epoxy/clay) nanocomposites were obtained by in situ polymerization reaction of GPTMS with triethoxysilanepropylamine formylethyltrimethyl-ammonium iodide (APS).…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of poly(3-glycidoxypropyltrimethoxysilane) nanocomposite using organophilic montmorillonite clay (Mag-cetyltrimethylammonium)

Embarek

Sahli

Belbachir

2019

Journal of Composite Materials

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Nanocomposites of linear poly(3-glycidoxypropyltrimethoxysilane) based on Algerian natural organophilic clay: montmorillonite–cetyltrimethylammonium named Maghnite-CTA were prepared by enhancing the dispersion of the matrix polymer in sheets of the organoclay. The effect of the organoclay, used with different amounts (3, 5, and 7% by weight) and the preparation method were studied in order to determine and evaluate their structural, morphological and thermal properties. X-ray diffraction analysis of obtained nanocomposites showed a significant change in the distance interlayer of montmorillonite–cetyltrimethylammonium. Therefore, interlayer expansion and exfoliation of linear poly(3-glycidoxypropyltrimethoxysilane) between layers of montmorillonite–cetyltrimethylammonium were observed. The thermal properties of the prepared nanocomposites were given by thermogravimetric analysis. The structure and morphology of the obtained materials were determined respectively by Fourier transform infrared spectroscopy and scanning electronic microscopy. The results obtained have approved the privilege of the intercalation of linear poly(3-glycidoxypropyltrimethoxysilane) in the interface of montmorillonite–cetyltrimethylammonium and the best quantity of organoclay required to prepare nanocomposite with a high thermal stability is 5% (by weight).

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Recent Studies on Single Site Metal Alkoxide Complexes as Catalysts for Ring Opening Polymerization of Cyclic Compounds

Kayan

2020

Catal Surv Asia

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Ring-opening polymerization of γ-glycidoxypropyltrimethoxysilane catalyzed by multi-metal cyanide catalyst

Cited by 8 publications

References 20 publications

Multifunctional organic–inorganic hybrids based on cellulose acetate and 3-glycidoxypropyltrimethoxysilane

Multifunctional organic–inorganic hybrids based on cellulose acetate and 3-glycidoxypropyltrimethoxysilane

Preparation and characterization of poly(3-glycidoxypropyltrimethoxysilane) nanocomposite using organophilic montmorillonite clay (Mag-cetyltrimethylammonium)

Recent Studies on Single Site Metal Alkoxide Complexes as Catalysts for Ring Opening Polymerization of Cyclic Compounds

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