Modification of high‑sulfur polymer using a mixture porogen and its application as advanced adsorbents for Au(III) from wastewater

et al. 2022

Preprint

Inverse vulcanization, a sustainable platform, can transform an industrial by-product, sulfur, into polymers with broad green applications such as heavy metal capture and recyclable materials. However, the process usually requires high temperatures (≥159 °C), and the crosslinkers needed to stabilize the sulfur are therefore limited to high-boiling-point monomers only. Here, we report an alternative route for inverse vulcanization — mechanochemical synthesis (MS), with advantages of mild conditions (room temperature), short reaction time (3 h), high atom economy, less H2S, and broader monomer range. Successful generation of polymers using crosslinkers ranging from aromatic, aliphatic to volatile, including renewable monomers, demonstrates this method is powerful and versatile. Compared with thermal synthesis, the MS products show enhanced mercury capture. The resulting polymers show thermal and light-induced recycling. The speed, ease, versatility, safety, and green nature of this process offer a more sustainable future for inverse vulcanization and enables further unexpected discoveries.

Section: Resultsmentioning

confidence: 99%

Mechanochemical synthesis of inverse vulcanized polymers

et al. 2022

Preprint

“…2D is tted by three components: neutral S (163-165.2 eV) and cationic S + (165.3-166.7 eV) and oxidized SO 3− (166.8-168.4 eV) 36 . The S 2p spectrum was curve tted, indicating the presence of four sulfur chemical bonding environments; S-S, C-S, S-O and S with Fe at a binding energy (BE) of 163.8 eV, 165.0 eV, 165.4 eV/166.6 eV and 166.9 eV /168.1 eV, respectively 5,37,38 . Furthermore, the bonding assignments from the C 1s data, Fig.…”

Section: Resultsmentioning

confidence: 99%

Mechanochemical synthesis of inverse vulcanized polymers

et al. 2022

Preprint

Inverse vulcanization, a sustainable platform, can transform an industrial by-product, sulfur, into polymers with broad green applications such as heavy metal capture and recyclable materials. However, the process usually requires high temperatures (≥159°C), and the crosslinkers needed to stabilise the sulfur are therefore limited to high-boiling-point monomers only. Here, we report an alternative route for inverse vulcanization — mechanochemical synthesis (MS), with advantages of mild conditions (room temperature), short reaction time (3 h), high atom economy, less H2S, and broader monomer range. Successful generation of polymers using crosslinkers ranging from aromatic, aliphatic to volatile, including renewable monomers, demonstrates this method is powerful and versatile. Compared with thermal synthesis, the MS products show enhanced mercury capture. The resulting polymers show thermal and light induced recycling. The speed, ease, versatility, safety, and green nature of this process offers a more sustainable future for inverse vulcanisation, and enables further unexpected discoveries.

“…S14 and cationic S + (165.3-166.7 eV) and oxidized SO 3-(166.8-168.4 eV) 36 . The S 2p spectrum was curve fitted, indicating the presence of four sulfur chemical bonding environments; S-S, C-S, S-O and S with Fe at a binding energy (BE) of 163.8 eV, 165.0 eV, 165.4 eV/166.6 eV and 166.9 eV/168.1 eV, respectively 5,37,38 . Furthermore, the bonding assignments from the C 1s data, Fig.…”

Section: Resultsmentioning

confidence: 99%

Mechanochemical synthesis of inverse vulcanized polymers

et al. 2022

Preprint

Inverse vulcanization, a sustainable platform, can transform an industrial by-product, sulfur, into polymers with broad green applications such as heavy metal capture and recyclable materials. However, the process usually requires high temperatures (≥159 °C), and the crosslinkers needed to stabilise the sulfur are therefore limited to high-boiling-point monomers only. Here, we report an alternative route for inverse vulcanization — mechanochemical synthesis, with advantages of mild conditions (room temperature), short reaction time (3 h), high atom economy, less H2S, and broader monomer range. Successful generation of polymers using crosslinkers ranging from aromatic, aliphatic to volatile, including renewable monomers, demonstrates this method is powerful and versatile. Compared with thermal synthesis, the mechanochemically synthesized products show enhanced mercury capture. The resulting polymers show thermal and light induced recycling. The speed, ease, versatility, safety, and green nature of this process offers a more sustainable future for inverse vulcanisation, and enables further unexpected discoveries.