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Preparation of Pickering-high internal phase emulsions (HIPEs) of methyl methacrylate (MMA) and divinylbenzene (DVB) by using natural abundant pumice zeolite was performed. Pumice was surface modified with cethyl trimethyl ammonium bromide (CTAB) to increase its compatibility with the emulsion phases. By using a combination of CTAB-modified pumice (CtP) and low amount of non-ionic emulsifier mixture Pickering-HIPEs were obtained. The influence of the amount of surface modified pumice and emulsifier mixture on the emulsion stability was observed. The morphological, thermal, and mechanical properties of the obtained polyMMA-based Pickering-polyHIPEs were investigated by altering the amount of CtP loading. Moreover, the Pickering-polyHIPE monolith exhibiting an open-porous network was used as supporting matrix for lauric acid (LA). The thermal characterization of the resulting LA impregnated Pickering-polyHIPE composite revealed that the impregnation rate of LA is 42.08%. The latter formed Pickering-polyHIPE composite showed a good performance in latent heat storage due to the 111.2 J/g of normalized enthalpy of LA within the Pickering-polyHIPE composite.

Cellulose nanocrystals (CNCs) loaded hierarchical macroporous polymer monoliths were synthesized through high internal phase emulsion (HIPE) templating. For this purpose, unmodified CNCs were used as nanofiller in various amounts during HIPE preparation. The effect of CNCs loading on the hierarchical pore structure and mechanical properties was investigated. It was demonstrated that mechanical strength was significantly improved by CNCs loading. In order to reveal an application field, adsorptive property of resulting monoliths was investigated against Nile blue dye. The results showed that the maximum adsorption capacity of cationic Nile blue was 54% for the neat monolith, while it was 70% for the monolith prepared by 9 wt% CNCs loading.Meanwhile, the kinetic evaluation of the experimental adsorption data revealed that the adsorption follows pseudo-second-order kinetic model and it is consistent with Freundlich isotherm.

High Internal Phase Emulsions (HIPEs) of dicyclopentadiene (DCPD) were prepared using mixtures of surface-modified calcite (mCalcite) and a non-ionic surfactant. Twelve different emulsion formulations were created using an experimental design methodology. Three distinctive levels of the internal phase ratio, the amount of mCalcite loading, and the surfactant were used to prepare the HIPEs. Accordingly, macroporous polyDCPD composites were synthesized by performing ring-opening metathesis polymerization (ROMP) on the HIPEs. The variations in the morphological and physical properties of the composites were investigated in terms of experimental parameters. In the end, five different model equations were derived with a confidence level of 95%. The main and binary interaction effects of the experimental parameters on the responses, such as the average cavity size, interconnecting pore size, specific surface area, foam density, and compression modulus, were demonstrated. The synergistic interaction between the amount of surfactant, the amount of mCalcite loading, and the internal phase ratio appeared to have a dominant role in the average cavity diameter. The solo effect of the internal phase ratio on the interconnecting pore size, foam density, and compression modulus was confirmed. In addition, it was demonstrated that the specific surface area of the composites was mainly changed depending on the amount of mCalcite loading.

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