Polymer‐dispersed liquid‐crystal materials fabricated with frontal polymerization

Gill, Nicole L.; Pojman, John A.; Willis, Jason R.; Whitehead, J. B.

doi:10.1002/pola.10566

Cited by 75 publications

(48 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…If the amount of dissipated heat is not too great, then a sufficient quantity of energy able to induce the polymerization of the monomer close to the hot zone is provided. The result is the formation of a hot polymerization front capable of self‐sustaining and propagating throughout the reactor 20–36…”

Section: Introductionmentioning

confidence: 99%

UV‐ignited frontal polymerization of an epoxy resin

Mariani

Bidali

Fiori

et al. 2004

J. Polym. Sci. A Polym. Chem.

134

148

View full text Add to dashboard Cite

By combining frontal polymerization and radical‐induced cationic polymerization, it was possible to cure thick samples of an epoxy monomer bleached by UV light. The effect of the relative amounts of cationic photoinitiator and radical initiator was thoroughly investigated and was related to the front's velocity and its maximum temperature. The materials obtained were characterized by quantitative conversion also in the deeper layers, not reached by UV light. © 2004 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 42: 2066–2072, 2004

show abstract

Section: Introductionmentioning

confidence: 99%

UV‐ignited frontal polymerization of an epoxy resin

Mariani

Bidali

Fiori

et al. 2004

J. Polym. Sci. A Polym. Chem.

134

148

View full text Add to dashboard Cite

show abstract

“…Pojman et al developed a process for producing Functionally Graded Polymeric materials (FGMs) using FP [1], polymer dispersed liquid crystals (PDLCs) via frontal curing of epoxies [2], and Interpenetrating Polymer Network (IPN) formation [3]. The very nature of FP is itself an advantage because reactions are concentrated in a very narrow region.…”

Section: Introductionmentioning

confidence: 98%

Frontal polymerization with encapsulated initiator

Urdiales

Volpert

2009

J Eng Math

View full text Add to dashboard Cite

Frontal Polymerization (FP) is a process that converts monomers into polymers by means of a propagating spatially localized reaction front. In the simplest case, a mixture of monomers and initiator is placed into a test tube and upon initiation of the reaction at one end of the tube, a self-sustained wave develops and propagates through the tube. Monomer/initiator systems can suffer from a limited pot life, meaning that over a period of time the systems will spontaneously polymerize before they can be used. One way to avoid the undesirable spontaneous polymerization is by microencapsulating the initiator. A mathematical model of nonadiabatic FP waves with encapsulated initiator is presented.

show abstract

“…Zhai et al, and Koike and Zhang et al have demonstrated the synthesis of gradient refractive index (GRIN) material by isothermal FP [26][27][28]. FP has also been used to cure mortar composition [29], synthesize copolymers [30], hydrogels [31], polymer-dispersed liquid crystals [33], homogeneous polymer blends [34], and crosslinked functional polymers [35].…”

Section: Introductionmentioning

confidence: 99%

Gel formation in frontal polymerization of 2-hydroxyethyl methacrylate

et al. 2004

View full text Add to dashboard Cite

Frontal polymerization of 2-hydroxyethyl methacrylate was investigated to study the effect of type and concentration of initiator, solvent and diluent on the existence of a front, on front velocity as well as front temperature. A significant effect of the type of initiator and its concentration was recorded. Poly(2-hydroxyethyl methacrylate) (PHEMA) was obtained predominantly as a gel. The different gels were evaluated for water and cyclohexane gain and porosity, and the mechanism of gel formation is discussed. Amongst the three diluents used (silica gel, β-cyclodextrin and silica sol), gel formation was highest in the presence of silica sol (≈ 42%). Pore dimensions were less than 15 nm and pore size distribution was narrow. PHEMA networks showed significantly higher water regain due to swelling than attributed to the pore volume as estimated by mercury porosimetry or cyclohexane regain. Kinetics of the equilibrium swelling ratio was studied.

show abstract

Polymer‐dispersed liquid‐crystal materials fabricated with frontal polymerization

Cited by 75 publications

References 25 publications

UV‐ignited frontal polymerization of an epoxy resin

UV‐ignited frontal polymerization of an epoxy resin

Frontal polymerization with encapsulated initiator

Gel formation in frontal polymerization of 2-hydroxyethyl methacrylate

Contact Info

Product

Resources

About