Aminosil

The most frequently used fillers are glass powder, lithium aminosilicate, and glass-ceramic. Figure 19.14 shows that properties of dental composites are enhanced by the use of silanes. Treatment with silane also improves water resistance. ... 

The rhodium complex 93 coordinated with the chiral phosphoramide hgand 92 was ionically immobihzed on mesoporous aminosilicate AITUD (Eigure 6.10) [40]. AlTUD-93 was used in water, and showed excellent enantiomeric selechvity and activity in asymmetric hydrogenahon. 

A new family of compounds called aminosils (Table 20.1) has also been presented ... 

Fig. 20.4. Concentration dependence of the conductivity at 300 K of BPEI, XH2SO4 (O), BPEI, XH3PO4 ( ) refs 13-15, 27, Aminosil, xHClQ (A) ref. 11 and LPEI, XH2SO4 ( + ) ref. 12.

Let us note that regions II and III could not be studied with BPEI/HCl, due to their very low conductivity and with Aminosils, because the material became white and granular. Although the LPEI and BPEl mixtures with acids present similar variations in conductivity versus acid concentration, their level of conductivity differs by several orders of magnitude (Fig. 20.4 and Table 20.2). This has been ascribed to the crystallinity of LPEI compared to the completely amorphous character of BPEF ... 

Figure 3.34 Tensile strength of 40 wt% mica filled PP effect of PPgAA addition. , 60 NP mica treated with aminosilance HI, 60 S untreated mica. (From Ref, 33.)...

Figure 3 Effects of an aminosilane on filler/matrix adhesion in a glass sphere/ polyamide 6 composite (a) untreated (b) with aminosilicate treatment (reprinted by permission of OSi Specialities).

Pyranin and Prodan. Water consumption was probed during the early stage of the sol-gel reaction of TMOS by using excited state proton transfer of PYRANIN (8-hydroxy-1,3,6-pyrenetrisulfonic acid trisodium salt Fig. 20-8) (Kaufman, 1988). This PYRANIN was applied to study aminosilicate matrix (Pouxviel, 1989) and as an in situ fluorescence... 

Bharathi S., Lev 0. Electrodeposition of thin gold films from an aminosilicate stabilized gold sol. 

Bharathi S., Nogami M Lev O. Electrochemical organization of gold nanoclusters in three dimensions as thin films from an aminosilicate-stabilized gold sol and their characterization. Langmuir 2001 17(9) 2602-2609... 

FIGURE 4.4 A scheme of aminosilicate-capped nanoparticles and an AFM micrograph of gold nanoparticles-silicate electrodeposit. (From Bharathi, S., J. Joseph, and O. Lev, 1999. Electrochem Solid State Lett 2 284-87. Used with permission.)... 

Grafting on preprepared Ormosils or inorganic silicate. In this technique, the organic moiety is bonded to silicate silanol by a covalent bond. A variant of the same method is to produce organically modified silicate containing a pendant functionality (e.g., by sol-gel polymerization of epoxy-, vinyl-, thio-, or aminosilicate) that can be used to anchor the desirable organic moiety after gel formation. 

G. Xomeritakis, Microporous sol-gel derived aminosilicate membrane for enhanced earbon dioxide separation, Sep. Purif. TechnoL, 2005, 42, 249-257. 

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