Kinetics of the Condensation of Melamine with Formaldehyde

Engineering the mechanical and physical properties of organic–inorganic composite microcapsules

“…The detachment allowed us to measure the MF wall thickness as a function of reaction time. The wall thickness of the MF polymer increased from 129 ± 2.5 nm (batch 1, 4 h) to 160 ± 3.1 nm (batch 5, 24 h) when the MF cross-linking time increased from 4 to 24 h. Previous studies on the kinetics of the MF polymerization reaction showed that the polymerization mainly took place during the first 2-3 h of the reaction [18,19], which is in agreement with our result that the wall thickness does not increase much as the cross-linking time increased from 4 to 24 h. Prolonged reaction time produces more cross-linked network, and consequently results smaller pores on the wall [20].…”

An investigation on the effect of phenylboronic acid on the processibilities and thermal properties of bis-benzoxazine resins

“…The discovery that boronic acids can be used in crosscoupling reactions for the construction of complex molecular architectures with interesting functions and properties is of particular importance [18]. Because these compounds are relatively nontoxic and thermally, air-, and moisture-stable, the exploitation of boronic acids' interactions has been an explosion of applied boronic acid based systems including, but not limited to, sensing, self-assembly, pharmaceutical, flame-retardants, self-healing, and electrolyte materials [19][20][21]. As a result of their unusual electronic structure, the empty p-orbital on boron leads to the lewis acidity of boronic acids, which has gained tremendous interest as building blocks for the design of new electronic materials or for applications in Lewis acid catalysis.…”

Homogeneous methylolation of melamine: Mathematical modeling

“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] First, the hydroxymethylation (or ''methylolation'') is represented by 1,2 ÀÀH þ CH 2 O Ð À ÀCH 2 OH (1) where À ÀH is any reactive H of any amine group contained in M or its derived products. Then, a hydroxymethyl group can either react with another reactive H to produce a methylene bridge:…”