Emulsion stabilization of cyclodextrin polymer inclusion amphiphilic polymers with different hydrophobic chain

In order to investigate the effect of host-guest inclusion on the stability of emulsion, two host-guest inclusion complexes (CDP-APC(16) and CDP-APP4 respectively) were constructed by using cyclodextrin polymer (CDP) and amphiphilic polymers(named APC(16), APP4). The optimal inclusion ratios of APP4 and APC(16) with CDP were explored and the O/W emulsion were prepared by APC(16), APP4, CDP-APC(16) and CDP-APP4. The stability of these four types of emulsion were analyzed by laser particle size analyzer and rheometer etc. The mechanism of inclusion complex emulsion stability was discussed by interfacial viscosity and interfacial viscoelasticity. The CDP including hydrophobic chain can form a more stable network structure and the free hydrophobic chain of CDP-APC(16) easily insert into oil phase to emulsify the oil. The longer hydrophobic chain length of APC(16) is easier to be included by CDP than that of APP4.Therefore, the CDP-APC(16) inclusion complex emulsion show better stability. The inclusion complex shows a prospect application in tertiary oil recovery. (C) 2020 Elsevier B.V. All rights reserved.

Automated summary

The study investigates the effect of host-guest inclusion on emulsion stability, constructing two inclusion complexes and analyzing the stability mechanism. The results show that the CDP-APC(16) inclusion complex emulsion exhibits better stability and potential application in tertiary oil recovery.