Corrigendum to “Preparation of uniform micrometer-sized polymer particles with closed-cell porous architecture made by limited coalescence of a double emulsion” [Colloids Surf. A: Physicochem. Eng. Aspects 443 (2014) 583–595]

Micron‐sized membrane reactors: Multicompartment semipermeable polymer particles containing palladium nanoparticles

“…The nanoparticles were obtained as a suspension in a mixture of ethanol and water, and were approximately 4–20 nm in diameter. Multicompartment microparticles containing the palladium nanoparticles were prepared using a double emulsion technique as reported earlier except that the first emulsion (W 1 /O) was prepared in the presence of a nonionic PCL containing block copolymer emulsifier as follows. An aqueous phase, W 1 , containing Pd nanoparticles dispersed in a solution of sodium carboxymethyl cellulose, was emulsified in an ethyl acetate solution of polycaprolactone with a small amount of methoxy(polyethylene oxide)‐ b ‐polycaprolactone copolymer.…”

“…An aqueous phase, W 1 , containing Pd nanoparticles dispersed in a solution of sodium carboxymethyl cellulose, was emulsified in an ethyl acetate solution of polycaprolactone with a small amount of methoxy(polyethylene oxide)‐ b ‐polycaprolactone copolymer. This W 1 /O phase was dispersed in a second water phase, W 2 , containing colloidal silica and poly(methyl amino ethanol) adipate, thereby forming the W 1 /O/W 2 double emulsion where the second emulsion is stabilized by colloidal silica (Pickering Emulsion) . The ethyl acetate was removed by distillation at reduced pressure, and the resulting microparticles were isolated by filtration, washed with water, and finally re‐suspended in water.…”

“…Recently, researchers at Kodak devised a scalable method for producing highly porous uniform polymer microparticles (Figure ) containing closed‐cell pores via water‐in‐oil‐in‐water (W 1 /O/W 2 ) double emulsions in combination with the evaporative limited coalescence (ELC) process. This method provides simultaneous control of micrometer‐ and submicrometer‐sized features of the microparticles, has been scaled to make kilogram quantities in manufacturing, and is amenable to the incorporation of addenda in closed multicompartments . Although this technology was initially developed to provide tailored electrophotographic toner, such multicompartment microparticles can be useful for a variety of applications.…”

“…This catalyst carrier scheme presents many advantages: Rapid reactions because the high surface area of the microparticles facilitates diffusion of reactants to and products from the catalysts. Uniform diffusion rates for all particles because of the relatively narrow particle size distribution of the microparticle and their compartments. A primarily aqueous process. Easy recovery and reuse of expensive catalysts. Adaptability to flow reactors. Demonstrated scalability of multicompartment microparticle synthesis from laboratory to manufacturing scale A simple process using conventional equipment and inexpensive materials (other than the catalysts). Many different polymers can be used as binders More than one kind of catalyst, or functional materials other than catalysts, can be encapsulated in different particles, or even in separate compartments within the same particle …”

“…This method provides simultaneous control of micrometer-and submicrometer-sized features of the microparticles, has been scaled to make kilogram quantities in manufacturing, and is amenable to the incorporation of addenda in closed multicompartments. 1 Although this technology was initially developed to provide tailored electrophotographic toner, such multicompartment microparticles can be useful for a variety of applications. Essentially, the W 1 /O/W 2 process efficiently entraps one aqueous phase within another, allowing for the encapsulation of water-borne substances useful in medicine, agriculture, foods, personal care products, chemical processes, and so forth.…”