Organo modified montmorillonite

Paul, M., Alexandre, M., Degee, P., Henrist, C., Rulmont, A., and Dubois, P. 2002. New nanocomposite materials based on plasticized poly(L -lactide) and organo-modified montmorillonites thermal and morphological study. Polymer 44 443-450. 

F. Laoutid, P. Gaudon, J.M. Taulemesse, J.M. Lopez-Cuesta, J.I. Velasco, and A. Piechaczyk, Study of hydromagnesite and magnesium hydroxide based fire retardant systems for EVA containing organo-modified montmorillonite, Polym. Degrad. Stabil., 2006, 91 3074—3082. 

Organo-modified montmorillonite Polymeric nanocomposites Polymerization Sol-gel technologies... 

Figure 11.29. Crystallization enthalpy of polylactide plasticized with variable amounts of polypropylene glycol having molecular weight of 1000. [Data from Paul M-A Alexandre M Degee P Pluta M Gleski A Dubois P, New Nanocomposite Materials Based on Plasticized Poly(l-lactide) and Organo-modified Montmorillonites, Belgian Polymer Group Meeting 2002, Mens, Belgium.]...

Morawiec, J., Pawlak, A., Slouf, M., Galeski, A., Piorkowska, E., and Krasnikowa, N. 2005. Preparation and properties of compatibilized LDPE/organo-modified montmorillonite nanocomposites. European Polymer Journal 41 1115-1122. 

Jiang, W., Chen, S.H., Chen, Y. Nanocomposites from phenolic resin and various organo-modified montmorillonites preparation and thermal stability. J. Appl. Polym. Sci. 102, 5336-5343 (2006)... 

Kuo WY, Huang JS, Lin CH. Effect of organo-modified montmorillonite on strength and permeability of cement mortars. Cement Conor Res 2007 36(5) 886-895. 

Shibata M, Someya Y, Orihara M, Miyoshi M (2006) Thermal and mechanical properties of plasticized poly(L-lactide) nanocomposites with organo-modified montmorillonites. J Appl Polym Sci 99(5) 2594-2602... 

J. Morawiec, A. Pawlak, M. Slouf, A. Galeski, E. Piorkowska, and K. Krasnikowa, Preparation and properties of compatibilized LDPE/organo-modified montmorillonite mnocomposh s, European Polymer Journal, A (2005), 1115-22. 

M. A. Paul, M. Alexandre, P. Degee, C. Henrist, A. Rulmont, and P. Dubois, New nanocomposites materials based on plasticized poly(l-lactide) and organo-modified montmorillonites Thermal and morphological study. Polymer, 44 (2003), 443-50. 

This work investigates the melt-processing of styrene-acrylonitrile copolymer (SAN) with organo-modified montmorillonite (MMT) clays and the influence of the clay on mechanical properties and on fire performance of SAN by solid-... 

Different results are obtained for high-thermal-stability epoxies. In this case the nanocomposite shows a decrease in the onset of decomposition temperature compared to the neat polymer. Hussain et al. showed that the onset of decomposition of an amino-cured epoxy is 420°C, whereas a nanocomposite containing 5 wt% octadecylammonium montmorillonite exhibits, at the same temperature, 420°C, a weight loss of 10%. It is obvious that in this case the weight loss in the nanocomposite is not only a direct effect of volatilization of the surfactant but is attributed to the catalytic effect of onium decomposition. Camino et al. compared the effect of different organo-modified montmorillonites on the thermal stability of a DGEBA cured with methyl tetrahydrophthalic anhydride. They observed that the octadecylammonium montmorillonite nanocomposite has the lowest onset at 5 wt% loss (288°C), compared to bis(2-hydroxyethyl)ammonium montmorillonite... 

Figure 9. Thermogravimetric analysis of PLA plasticized with PEG 1000 and filled with 3 wt% of (organo-modified) montmorillonite. Cl. stands for Cloisite and p.PLA for plasticized PLA. (Experiments carried out under air flow at 20 K/min heating rate).

Aliphatic polyester layered silicate nanocomposites based on poly(e-caprolactone) (PCL) and on plasticized poly(L-lactide) (PLA) have been prepared first by melt blending of the respective polymer matrix with different (organo-modified) montmorillonites. It has been demonstrated that melt blending with organo-modified clay such as Cloisite 20A, 25A or SOB, yields intercalated nanocomposites with the possibility of partial exfoliation. Even at low organoclay content, substantial improvement of thermal stability, gas barrier properties and physical-mechanical performances have been noticed. However, melt blending of natural montmorillonite with PCL or neat (non plasticized) PLA leads to microphase-separated compositions. 

Nam, P.H., Ninomiya, N., Fujimori, A., and Masuko, T. (2006) Less-ordered lamellar structure of intercalated poly(L-lactide)/organo-modified montmorillonite hybrids. Polymer Engineering and Science, 46, 703-711. 

S. Khalili, M. Masoomi, and R. Bagheri, The effect of organo-modified montmorillonite on mechanical and barrier properties of linear low-density poly-ethylene/low-density polyethylene blend films, /. Plast. Film Sheeting 29 (1), 39-55 (January, 2013). 

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