Studies on Ion Exchange Capacity of Phenol-Formaldehyde Resin Blended With Sulphonated Tinospora cordifolia Carbon

摘要

The simple method of preparing cationic resins (CRs) from polycondensation of sulphonated Tinospora cordifolia (Thunb.) Miers. carbon (STCC) with phenol-formaldehyde resin (PFR) as a cross linking agent has been reported. A few composite ion exchangers were prepared by varying the amount of sulphonate Tinospora cardifolia carbon in the blends from 0 to 100% (w/w). The properties of the blends were determined and compared with the parent resin without sulphonate Tinospora cardifolia carbon content. It was found that the ion-exchange capacity or cation exchange capacity (CEC) of the composite resins decreased with increasing the percentage of blending phenol-formaldehyde resin matrix with sulphonate Tinospora cardifolia carbon. SEM images have well defined in micrometric structures of the 2 different magnifications. The composites upto 20% (w/w) blending of phenol-formaldehyde resin with sulphonate Tinospora cardifolia carbon 2 retain almost all the essential properties of the original phenol-formaldehyde resin (parent resin). Since Tinospora cordifolia is a freely available plant material, the blended composites of phenol-formaldehyde resin with sulphonate Tinospora cardifolia carbon could be used as low cost ion exchangers without affecting the physico-chemical, cation exchange capacity, thermal and spectral properties of the original parent cationic resings, namely phenol-formaldehyde resin.