Cloisite organoclay

Cloisite organoclays from Southern Clay Products... 

FIGURE 11.17 XRD patterns of two organoclays (Cloisite 10A, from Southern Clay Products, and VB166a) and two PSCNs with intercalated (PS/10A) or exfoliated (PS/VB16) morphology. 

Member Compositional Matrix of Polystyrene (PS) Containing Various Levels of a 3 1 Mass Ratio of Ammonium Polyphosphate (APP/PER (3 1)) or a Cloisite 15A Organoclay... 

A new polymer-inorganic nanocomposite SPEEK membrane filled with Cloisite 15A clay by introducing 2,4,6-triaminopyrimidine (TAP) as the compatibilizer for DMFC applications has been successfully prepared. The organoclay Cloisite is a material prepared from MMT and the cation ditallow. Tallow is a mixture of octa-decyl, hexadecyl, and tetradecyl, wherein octadecyl is the major component (>60%). Cloisite is a very promising additive in nanocomposite membranes, since it is already being organically modified from the natural MMT, which is expected to enhance the compatibility with organic polymers (Cervantes-Uc et al. 2007). 

A soy protein isolate has been crosslinked with furfural, and then blended with an organoclay (Cloisite SOB). The crosslinking process has been ascertained from FTIR data. The degradation pattern of the crosslinked product has been examined using thermogravimetry. The kinetic parameters were assessed by a computerized LOTUS package. From the kinetic data the mechanism of degradation of the nanocomposites was asserted (100). 

A recent paper by Chiu and Chu [59] describes the preparation, carried out by solution blending, of PP nanocomposites with three different commercial organoclays, Cloisite 15A (15A), Cloisite 20A (20A), and Cloisite 30B (30B). These organoclays are produced by Southern Clay Products Inc. from Cloisite Na+ by cation exchange with M2(HT)2, for 15A... 

X-ray diffractograms of three-component PE hybrids containing PE- -PMAA and 13wt% Cloisite 20A. The PE- -PMAA composition in the polymer is (from top to bottom) 15,10,6, and 2 wt%. The data for the respective organoclay are shown with the dashed line. The curves are shifted for clarity. (Reprinted from Chrissopoulou, K. et al.. Polymer, 46,12440,2005. With permission from Elsevier.)... 

The effectiveness of organoclay in NR was observed and reported by Carli et They evaluated the technical feasibility of NR nanocomposites with Cloisite 15A, a commercial organoclay to substitute conventional silica (Si02) filler. TEM analysis indicated that the OMt was homogeneously dispersed in the rubber matrix. A shift of the characteristic peaks to lower angles was observed in XRD, attributed to the intercalation of the OMt by macromolecular rubber chains. Based on the mechanical properties of the compounds they concluded that 50 phr of silica can be replaced by 4 phr of OMt with a reduction in the filler content by 12.5 times, without adversely affecting the tensile properties of the final material even after ageing. 

PA 6/ABS 40/60 Cloisite 30B PA 6 phase Morphology changes from dispersed phase to co-continnous structure in the presence of organoclay. Co-continuity leads to significant improvement in dynamic storage modulus of the nanocomposites compared to pure blend Li and Shimizu 2004, 2005... 

PP/EPDM/PP-g-MA 25 wt% PP Cloisite 20A EPDM Improvement in the tensile modulus and strength and decrease in the elongation at break in the presence of organoclay. Addition of PP-g-MA leads to a higher improvement in the properties compared to nanocomposites without PP-g-MA Mishra et al. 2005... 

Nylon 66/SEBS-g-MA 84/16 Cloisite 30B Nylon 66 phase Flexural modulus and strength increases while impact strength decreases in the presence of organoclay Dasari et al. 2005... 

PA 6/elastomer Elastomers EPR-g-MA, SBS-g-MA, VP701, EPR, E-MA-GMA, PE-GMA, PP-g-MA 95/5 Cloisite 30B PA 6 phase Reactive elastomers, mainly EPR-g-MA and SBS-g-MA, result in better improvement in toughness compared to other elastomers. A tensile property increases in the presence of organoclay Kelnar et al. 2005, 2006... 

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