He, Yongqiang Wu, Fei Sun, Xiying Li, Ruqiang Guo, Yongqin Li, Chuanbao Zhang, Lu Xing, Fubao Wang, Wei Gao, Jianping All rights reserved.įactors that affect Pickering emulsions stabilized by graphene oxide. These macroporous polystyrene (PS) foams demonstrated great potential for the effective absorption of organic solvents from underwater. Diverse internal phase volume fractions led to distinct inner structures of foams with closed or open cells. The internal phase volume fraction of the SMCC- stabilized HIPEs reached as high as 89%. SMCC could efficiently stabilize W/O Pickering emulsions and HIPEs could only be prepared via the two-step method. Polystyrene (PS) foams were prepared after polymerization of oil phase using HIPEs as templates and their oil/water separation capacity were studied. Using SMCC as emulsifiers, W/O medium and high internal phase Pickering emulsions (MIPEs and HIPEs) with various organic solvents as continuous phases were prepared using one-step and two-step methods, respectively. Stearoylated microcrystalline cellulose (SMCC) was prepared by modifying MCC with stearoyl chloride under heterogeneous conditions. Moreover, these W/O HIPEs can be further used as platforms for the preparation of porous materials, such as porous foams. Herein, we used stearoylated microcrystalline cellulose (SMCC) to stabilize W/O Pickering emulsions and especially, W/O HIPEs. However, W/O HIPEs have rarely been realized using sustainable biopolymers. In particular, high internal phase Pickering emulsions (HIPEs) are of great interest for diverse applications. Hydrophobic particles with static water contact angles larger than 90Â° are more like to stabilize W/O Pickering emulsions. Pang, Bo Liu, Huan Liu, Peiwen Peng, Xinwen Zhang, Kai Water-in-oil Pickering emulsions stabilized by stearoylated microcrystalline cellulose. SEM results indicated that both microsphere and porous materials were fabricated using emulsion stabilized by unmodified HAp nanoparticles, implying that both W/O and O/W emulsion type were obtained. The interaction between HAp and PLLA played an important role to stabilize Pickering emulsions. Stable W/O and O/W emulsions were fabricated successfully using as-received HAp particles as stabilizer by adjusting the fabricating parameters. The results indicated emulsion stability increased with the increase of HAp concentration, emulsification rate and time it is very stable when pH value of aqueous phase was adjusted to 10. Effect of PLLA concentrations, pH value, HAp concentrations, oil-water ratio, emulsification rates and times were studied on emulsion stability and emulsion type, etc. Pickering emulsion was cured via in situ solvent evaporation method. Hydroxyapatite (HAp) nanoparticle stabilized Pickering emulsion was fabricated with poly(l-lactic acid) dissolved in dichloromethane (CH 2 Cl 2 ) solution as oil phase and HAp aqueous dispersion as aqueous phase. Zhang, Ming Wang, Ai-Juan Li, Jun-Ming Song, Na Song, Yang He, Rui We also provide future perspectives on their applications, such as drug delivery, food, and composite materials.įactors influencing the stability and type of hydroxyapatite stabilized Pickering emulsion. In this review, the preparation and properties of nanocellulose- stabilized Pickering emulsions are summarized. chemical stability, biodegradability, biocompatibility, and renewability). Among various solid stabilizers, nanocellulose may open up new opportunities for future Pickering emulsions owing to its unique nanosizes, amphiphilicity, and other favorable properties (e.g. Pickering emulsion, which is an emulsion stabilized by solid particles, offers a wide range of potential applications because it generally provides a more stable system than surfactant- stabilized emulsion. We also provide future perspectives on their applications, such as drug delivery, food, and composite materials. Nanocellulose- stabilized Pickering emulsions and their applicationsįujisawa, Shuji Togawa, Eiji Kuroda, KatsushiĪbstract Pickering emulsion, which is an emulsion stabilized by solid particles, offers a wide range of potential applications because it generally provides a more stable system than surfactant- stabilized emulsion.

Cnf pickering emulsion modeling