The fillers were three montmorillonites (OMMTs) organically modified with dimethyl dehydrogenated
tallow quaternary ammonium (Cloisite [R] 20A, Southern Clay Products), octadecylamine (Nanomer [R] 130 TC, Nanocor), and bis-2-hydroxyethyl methyl tallow quaternary ammonium (Cloisite "1 30B, Southern Clay Products) that have a cation exchange capacity of 90, 145, and 95 meq/100 g.
The surface modified clays are produced commercially by the substitution of interlayer sodium cations by dimethyl, dehydrogenated
tallow or methyl, tallow, bis-2-hydroxyethyl quaternary ammonium cations for Cloisite 20A and 30B, respectively.
The decrease can been related to a collapse of the intergallery chains of the surfactant (dimethyl, dehydrogenated
tallow, quaternary ammonium) between the MLS plates and a transition from pendant bilayers to a lateral monolayer.
It is an organic treated montmorillonite with the modifier dimethyl, dehydrogenated
tallow, quaternary ammonium salt.
The clay is produced by treating unmodified montmorillonite (MMT) with dimethyl, dehydrogenated
tallow quaternary ammonium chloride with a d spacing of 2.
The Cloisite 15A was often used to promote the exfoliated level of MMT in polymer matrix owing to the existence of dimethyl dehydrogenated
tallow quaternary ammonium as an organic modifier.
The alkyl modification consists of dimethyl, dehydrogenated
tallow, and quaternary ammonium ions as shown in Scheme 1.
This clay is produced by treating unmodified MMT (Montmorillonite) with Dimethyl, dehydrogenated
tallow quaternary ammonium chloride and has a basal or d spacing of 2.