Montmorillonite intercalation complexes and their interaction with epoxy compounds

Gurina, G. I.; Savchenko, K. V.

doi:10.1007/bf00520265

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…The XRD diffractogram of AAM revealed a peak corresponding to an interlayer space of 26.50 Å as main characteristic (Figure 3) (21) pointing to the presence of the lamellar structure initially proposed (Figure 4). Animals death was not observed after 14 days of exposure using 10 g/kg of body weight fixed dose.…”

Section: Characterization and Toxicity Evaluation Of Aammentioning

confidence: 71%

“…The SEM analysis (Figure 4) pointed to the presence of the lamellar structure initially proposed (22). The tortuosity level of AAM related to its lamellar structure characterized this clay as a good sustained release matrix prototype (21). The AAM also demonstrated a low toxicity level as the results with animals is in accord to the System of Integrated Classification conciliated by Human Health related to the Exposition of Risk of Chemical Substances and Mixtures (22), that reports that AAM present no toxicity risks in a dose of 10000 mg/kg of body weight since this value is superior to the class five dose (5000 mg/kg).…”

Section: Discussionmentioning

confidence: 99%

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Preparation and Evaluation of a New Nano Pharmaceutical Excipients and drug Delivery System Based in Polyvinylpyrrolidone and Silicates

et al. 2011

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-Purpose. The aim of this work is to prepare new nanocomposites based on a lamellar silicate alkyl ammonium montmorillonite (AAM) obtained by the intercalation of polyvinylpyrrolidone (PVP K-30) and glyceril monostearate (GME). Methods. AAM was characterized by XRD, TGA and DSC analysis and its compactation characteristics, functionality and toxicity were also tested. The AAM/PVP K-30 and AAM/GME nanocomposites were evaluated by XRD diffratograms to measure the interlamellar spacing values in order to prove the new nanocomposites formation. Tablets were prepared using methyldopa and theophylline as model drugs whereas the dissolution tests were carried out in simulated gastric and enteric fluids. Results. AAM showed a good compactability and compressibility characteristics for tablets preparation. The intercalation yields (~ 25%) of the nanocomposites were efficient. The AAM/PVP K-30 nanocomposites were successfully tested as dissolution enhancers and sustained release matrixes. Conclusions. The results suggest to the promising use of AAM (viscogel B8) and to the new nanocomposite prepared by clay/PVP K-30 intercalation as a new matrix for sustained release. These data also point to the feasibility of using these new nanocomposites as dissolution enhancer. __________________________________________________________________________________________

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Section: Characterization and Toxicity Evaluation Of Aammentioning

confidence: 71%

Section: Discussionmentioning

confidence: 99%

Preparation and Evaluation of a New Nano Pharmaceutical Excipients and drug Delivery System Based in Polyvinylpyrrolidone and Silicates

et al. 2011

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“…These residues can contribute to deterioration of the resin and may be vaporized during the thermo setting. Another class of latent catalysts, the phase‐separated type, is able to catalyze the polymerization of epoxides at deintercalation temperatures, and includes intercalation compounds of montmorillonite‐amines …”

Section: Introductionmentioning

confidence: 99%

Alkylamines-intercalated α-zirconium phosphate as latent thermal anionic initiators

Shimomura

Maeno

Ohtaka

et al. 2014

J. Polym. Sci. Part A: Polym. Chem.

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The reaction of glycidyl phenyl ether (GPE) with 1‐aminoalkanes‐intercalated α‐zirconium phosphate (α‐ZrP·1‐aminoalkane): 1‐aminoalkanes 1‐aminopropane (α‐ZrP·Pr), 1‐aminobutane (α‐ZrP·Bu), 1‐aminooctane (α‐ZrP·Oct), and 1‐aminohexadecane (α‐ZrP·Hed) was carried out at varying temperatures for 1 h periods. Reaction progress was not observed until the reactants were heated to 80 °C or above. On increasing the temperature, the conversion factors increased such that, at 140 °C, conversions of 62% (α‐ZrP·Pr), 60% (α‐ZrP·Bu), 67% (α‐ZrP·Oct), and 64% (α‐ZrP·Hed) were obtained. The thermal stabilities as latent initiators were tested: GPEs reacted with α‐ZrP·Pr, α‐ZrP·Bu, and α‐ZrP·Oct at 40 °C for 360 h achieved conversions of 83, 55, and 59%, respectively. In contrast, the reaction in the presence of α‐ZrP·Hed did not proceed at 40 °C. The order of the thermal stability of GPE in the presence of α‐ZrP·1‐aminoalkane intercalation compounds was: α‐ZrP·Hed > α‐ZrP·Bu ≈ α‐ZrP·Oct > α‐ZrP·Pr. © 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2014, 52, 1854–1861

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Imidazoles-Intercalated α-Zirconium Phosphate as Latent ThermalCatalysts in the Curing Reaction of Epoxy-Thiol System

Shimomura

Fukushima

Oonishi

et al. 2019

Journal of the Adhesion Society of Japan

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Montmorillonite intercalation complexes and their interaction with epoxy compounds

Cited by 3 publications

References 4 publications

Preparation and Evaluation of a New Nano Pharmaceutical Excipients and drug Delivery System Based in Polyvinylpyrrolidone and Silicates

Preparation and Evaluation of a New Nano Pharmaceutical Excipients and drug Delivery System Based in Polyvinylpyrrolidone and Silicates

Alkylamines-intercalated α-zirconium phosphate as latent thermal anionic initiators

Imidazoles-Intercalated α-Zirconium Phosphate as Latent ThermalCatalysts in the Curing Reaction of Epoxy-Thiol System

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