Microencapsulation of an acrylate monomer in silica particles by sol–gel process

Nistor, Cristina Lavinia; Donescu, Dan; Périchaud, A.; Ballout, Wael; Ghiurea, Marius

doi:10.1007/s10971-010-2337-z

Cited by 7 publications

(2 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…10 Either aqueous or nonaqueous cores can be microencapsulated. 12 It has been demonstrated that various components of these systems can be microencapsulated, including monomers, 13 initiators, 12,14 and catalysts. 12 It has been demonstrated that various components of these systems can be microencapsulated, including monomers, 13 initiators, 12,14 and catalysts.…”

Section: Introductionmentioning

confidence: 99%

“…11 Another application of particular interest is the use of microencapsulated components of reactive polymeric systems, often to increase the pot life of the system until a desired moment of curing. 12 It has been demonstrated that various components of these systems can be microencapsulated, including monomers, 13 initiators, 12,14 and catalysts. 10 Frontal polymerization is a specialized polymeric system in which a monomer is converted into a polymer via a localized reaction front that propagates through the monomer, converting it into polymer as it passes.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of shell crosslinking on polyurea microcapsules containing a free‐radical initiator

McFarland

2015

J of Applied Polymer Sci

View full text Add to dashboard Cite

Microencapsulation of a material is often used when a controlled release of a substance is desired. This study examines the effects of crosslinking in polyurea microcapsule shells on stability of microcapsules containing the free-radical initiator cumene hydroperoxide (CHP). Crosslinking of polyurea shells was varied by using amine monomers containing different amine functionalities, and/or changing the isocyanate/primary amine ratio. Thermogravimetric analysis was performed to determine thermal properties of these microcapsules, and the pot lives of monomer systems containing these microcapsules were measured. Thermal stability is greater with a moderate degree of crosslinking from a trifunctional amine, and decreases when crosslinking is increased through use of higher amine functionality. Stability in monomer media generally increases with increased crosslinking through higher amine functionality, but is less predictable due to crosslinks formed between capsules. Generally, increasing crosslinking through altering the isocyanate to primary amine ratio decreases capsule stability in both dry and monomer storage.

show abstract