YANG Fafu, CHEN Xilei, GUO Hongyu, CAI Xiuqin. SUPRAMOLECULAR CHELATING RESINS——DESIGN,SYNTHESES AND ADSORPTION PROPERTIES OF CELLULOSE GRAFTED WITH CALIX[4]ARENE[J]. Acta Polymerica Sinica, 2005,(6):896-901.
YANG Fafu, CHEN Xilei, GUO Hongyu, CAI Xiuqin. SUPRAMOLECULAR CHELATING RESINS——DESIGN,SYNTHESES AND ADSORPTION PROPERTIES OF CELLULOSE GRAFTED WITH CALIX[4]ARENE[J]. Acta Polymerica Sinica, 2005,(6):896-901.DOI:
A series of novel cellulose resins grafted with calix [4] arene 4a~4c were obtained by reactions of eellulose poly (ethyleneimine) derivatives 2a~2c with 1
3-bis-epoxypropyl Calix [4] arene 3.The structure and appearance of the chelming resins were characterized by IR
element analyses and SEM images.The degree of substitution of calixarene in 4a~4c was 0.75
0.82 and 0.87
respectively.The adsorption experiments of 4a~4c towards a series of cations showed that the calixarene units played an important role in adsorption.These resins combined the adsorption advantages of cellulose derivatives and calixarene polymers
exhibited not only high adsorption capacities.but also high adsorption selectivity.Chelating resins 4b and 4c showed very high adsorption selectivitv towards Ni2+.The saturated adsorption capabilities of 4a~4c were as high as 2.96
2.93 and 2 66mmol/g
respectively.The adsorption capacities of 4a~4c decreased remarkably when pH<4
andthey can be reused by desorption with aqueous solutions of 10% ammonium hydroxde.