Frontal Polymerization in Solution

Free‐Radical Frontal Copolymerization: The Dependence of the Front Velocity on the Monomer Feed Composition and Reactivity Ratios

“…In the region x < 0, we integrate each equation in (14) and apply the boundary conditions for x ! À1.…”

“…Most experiments used liquid neat monomers; however, FP has also been demonstrated with solid monomers, [11,12] in dispersions, [13] and in solutions. [14] Some experiments successfully produced Full Paper: Frontal copolymerization is a process in which a spatially localized reaction zone propagates into a mixture of two monomers, converting them into a copolymer. In the simplest case of free-radical copolymerization, a mixture of monomers and initiator is placed into a test tube.…”

Gas-free initiators for high-temperature free-radical polymerization

“…Using sodium persulfate as an initiator, frontal polymerization of acrylamide polymerization in dimethyl sulfoxide was studied and no bubbles were observed. 6,9 Although a persulfate does not produce volatile byproducts when it decomposes into the sulfate radical anion, the inorganic salts are insoluble in organic media. As long as low initiator concentrations yield self-sustaining fronts, sodium persulfate and ammonium persulfate dissolved in organic solvents like dimethyl sulfoxide (DMSO) can be used as initiators even for the organic media associated with most monomer and polymer systems.…”

Water‐Triggered Frontal Polymerization

“…These observations were first noted by Chechilo and Enikolopyan. [2] Pojman et al [1,3,4] have since extensively examined the phenomenon. In recent years, three classes of FP such as: thermal FP, [5] isothermal FP [1,6] and UV initiated (photo) FP [7,8] have emerged.…”