Polymer networks based in (4‐vinylbenzyl)‐N‐methyl‐D‐glucamine supported on microporous polypropylene layers with retention boron capacity

Abstract

New cellulose porous layers, with capacity to transport and retain boron from aqueous solution, were developed via interpenetrating polymer network (IPNs). These polymer systems were made to assemble mimetic systems of plant root tissue for the study of available boron transport. For that cellulose porous layers supported on polypropylene matrix were used as primary network for the formation of IPN. A vinyl monomer, (4-vinylbenzyl)-N-methyl-D-glucamine (VbNMDG), was synthesized at three concentration levels and cellulose ultrafiltration membranes were modified by in situ polymerization in the inside of the pores. Change of hydrophilicity, percent of secondary network, permeability and retention properties were studied. The formation of IPNs in the inside of the pores decreased the permeabilities of polymer layers. In addition, a decrease of hydrophilicity was seen. A linear increase of boron retention in function of VbNMDG concentrations was observed for the different boron concentrations and a negative effect on retention capability was evidenced for several charge and discharge cycles.

Tuning N-methyl-d-glucamine density in a new radiation grafted poly(vinyl benzyl chloride)/nylon-6 fibrous boron-selective adsorbent using the response surface method

“…This functional group exhibits a high selectivity towards boron due to the presence of ve hydroxyl groups allowing for the coordination of boron to form a stable complex. [5][6][7][8][9][10][11][12] A review of various strategies for the preparation of alternative polymer-based adsorbents and their performance evaluation was published recently. 3 Various polymer-based adsorbents have been developed for boron removal from solution using various polymerisation routes.…”

Functional polymer from high molecular weight linear polyols and polyurethane‐based crosslinking units: Synthesis, characterization, and boron retention properties

“…Later, 3.20 mL (21.9 mmol) of VbCl was dissolved in 10 mL of dioxane and was slowly added to the reactor. The reaction was kept under reflux with constant stirring for 5 h. Unreacted VbCl was removed by extraction with ethyl ether and functionalized monomer (VbNMDG) remained in the aqueous phase …”

“…Different working pHs were used 5.0, 7.0, and 9.0; operating pressure and stirring rate were 300 kPa and 200 rpm, respectively. These operating conditions have been established in previous works . Permeate fractions with a volume of 20 mL were collected in plastic tubes to avoid interferences, and boron concentration was measured using azomethine‐H method .…”

“…These operating conditions have been established in previous works . Permeate fractions with a volume of 20 mL were collected in plastic tubes to avoid interferences, and boron concentration was measured using azomethine‐H method . A blank experiment was performed using the same experimental conditions but in absence of polymer.…”

Modificación De Poliuretanos Químicamente Activos Mediante Poli(vinilbencil-N-Metil-Dglucamina) Para La Retención De Boro

“…La estabilidad del complejo formado depende fuertemente del tipo de poliol utilizado, por ejemplo, se ha demostrado que complejos estables son formados cuando se emplean polioles con sistemas cis-diol como el D-sorbitol, la N-metil-D-glucamina (NMDG) y la D-ribosa 4 . Recientemente, se ha reportado la modificación de membranas de ultrafiltración con polímeros basados en NMDG y capacidad de retención de boro 5 .…”