Polymer from high internal phase emulsion for CO₂ adsorption - effect of biopolymer loading

Abstract

Effect of biopolymer on polymer obtained from high internal phase emulsion (HIPE) polymerization was studied for CO2 adsorption. Divinylbenzene monomer and 20 %wt. of mixed surfactants composed of sorbitan monolaurate (Span 80), dodecylbenzenesulfonic acid (DDBSS) and cetyltrimethylammonium bromide (CTAB) were used to in the emulsion preparation. The amount of biopolymer was varied 0, 7, 11, 16 and 23 wt.%. The results showed that firstly when the addition of biopolymer was more than 23 wt.%, the phase separation occurred. Secondly, the surface morphology of polyHIPE after loading biopolymer showed a highly interconnected pore network structure and biopolymer dispersed around the polyHIPE even some pieces of them agglomerated in the same pore. Thirdly, the decomposition temperature of polyHIPE increased slightly when increased wt.% of biopolymer. When the amount of mixed surfactant was increased to 20 wt.%, 23 wt.% and 25 wt.%, more biopolymer can be added into the polyHIPE. Furthermore, biopolymer in a solution form (dissolved biopolymer in acetic acid) was also used to improve amount of loading in polyHIPE. The amount of biopolymer solution was varied 30, 50, 70, 100, 120 and 150 wt.% respective to weight of monomer. The result of FTIR showed the important peak of amines and the SEM results showed that the size of secondary pore became smaller and increase the amount of polyHIPE texture. Finally, the decomposition temperature was increased slightly when increased wt.% of biopolymer solution.