Development of LTA zeolite membrane from clay by sonication assisted method at room temperature for H-CO and CO-CH separation.

In this work, sodium aluminosilicate zeolite powder and membranes were synthesized by ultrasonic irradiation at room temperature using montmorillonite clay as precursor material. For comparison, same zeolite powder and membranes were synthesized at 100 °C also. The synthesized zeolites were characterized by X-ray diffraction (XRD), infrared (IR) spectral analysis, and field-emission scanning electron microscopy (FESEM).

Bone cement based nanohybrid as a super biomaterial for bone healing.

A novel nanohybrid based on bone cement has been developed which is capable of healing fractured bone in 30 days, one-third of the time required for the natural healing process. Nanohybrids of bone cement based on poly(methyl methacrylate) (PMMA), currently used as a grouting material in joint replacement surgery, were prepared by simple mixing with organically modified layered silicates of varying chemical compositions. The temperature arising from exothermic polymerization in one of the nanohybrids is 12 °C lower than that in pure bone cement, thus circumventing the reported cell necrosis that occurs during implantation with pure bone cement.

Immobilization of poly(fluorene) within clay nanocomposite: an easy way to control keto defect.

Blue light emitting cationic polyfluorene polymer(PF)/montmorillonite (MMT) nanocomposites were prepared by solution intercalation and exfoliation method to evaluate the effect of MMT on the nanocomposite structures, properties and morphologies. The properties of PF-MMT composites, containing 1-50 mass% MMT, were characterized unambiguously with the help of multiple analytical techniques, with focus on the keto defect and photostability of PF in the nanocomposites. XRD and HRTEM studies reveal both exfoliation of MMT galleries at lower content of MMT in composites and intercalation of PF chains into the MMT galleries at higher MMT content.