Modelling mercury sorption of a polysulfide coating made from sulfur and limonene

Abstract

A polymer made from sulfur and limonene was used to coat silica gel and then evaluated as a mercury sorbent. A kinetic model of mercury uptake was established for a...

Raman analysis of inverse vulcanised polymers

“…To date, only a few publications have included a Raman study of their inverse vulcanised polymers. 12,[19][20][21] Berk et al, used Raman spectroscopy as a complementary technique to IR spectroscopy, but derived little information from their spectra. 22 Najmah et al, used Raman spectroscopy despite the fluorescence of their polymers to identify the presence of unreacted sulfur, which gave sufficiently strong signals to be seen through the fluorescent background.…”

Inverse Vulcanized Polymers for Sustainable Metal Remediation

“…In some cases, more than 99% of HgCl 2 could be removed in 5 min. [30] Currently, there are only three reported polymers made by inverse vulcanization that have shown to remove mercury below, or close to, 1 ppb. These polymers are made with sulfur and one of either 2-carboxyethyl acrylate, [23] castor oil, [35] or garlic oil blend [36] (Figure 4).…”

“…Mercury metal is one of the most toxic pollutants released in artisanal and small-scale gold mining (ASGM), contaminating Hg(II) 2-carboxyethyl acrylate [23] 835 99.9 1.1 2.5 1 × 10 −4 d-limonene (coated on silica) [12] 716 -1 d-limonene (coated on silica) [30] 11 99 5 0.08 -2-carboxyethyl acrylate [31] 527 99.9 50 4 5 × 10 −3…”

Sulfur–oleylamine copolymer synthesizedviainverse vulcanization for the selective recovery of copper from lithium-ion battery E-waste

“…17 Depending on the intended use, the choice of crosslinker and the quantity of sulfur can be used to modify or tune the morphology and properties of the crosslinked sulfur polymer. A wide range of sulfur polymers based on different crosslinkers, such as limonene, 18,19 styrene, fatty acid derivatives like vegetable oil, canola oil, etc. , 20 are reported and explored for other fields such as optics fertilizers and as components in solar cells, etc.…”

“…17 Depending on the intended use, the choice of crosslinker and the quantity of sulfur can be used to modify or tune the morphology and properties of the crosslinked sulfur polymer. A wide range of sulfur polymers based on different crosslinkers, such as limonene, 18,19 styrene, fatty acid derivatives like vegetable oil, canola oil, etc., 20 are reported and explored for other fields such as optics fertilizers and as components in solar cells, etc. 14,[21][22][23][24][25][26][27][28][29] Moreover, sulfur is a soft Lewis base; considering (Hard-Soft-Acid-Base) HSAB theory, the sulfur polymer can be exploited to form covalent bonds with soft Lewis acids; hence it has been receiving significant attention in recent years with heavy metal sorption.…”