Piperazine

Chemical type

• Cyclic diamine
^{Cite 1}
• Diamine organic compound
^{Cite 2}

Key properties

• Small molecular size
• High reactivity toward acyl chlorides

• Aqueous phase monomer for interfacial polymerization
• Forms polyamide layer with TMC
• Contributes to NF membrane structure with nanochannels

• Aqueous-phase monomer for interfacial polymerization
• Forms polyamide selective layer

• Synthesis of NF membranes for ENF (2 wt% PIP/water solution)
• Enables selective ion transport in separation processes

Classification by use

• Chemicals used to form nanofiltration polyamide layers
^{Cite 1}
• Monomers in polymer membrane fabrication
• Chemicals in interfacial polymerization
^{Cite 2}

1. [Cite:1] Solvent desalination nanofiltration (SDNF) membranes with rigid microporous network, Advanced Membranes, Volume 7, June 2026, 100203
2. [Cite:2] Mono-/monovalent ions separation through an electro-nanofiltration, Advanced Membranes, Volume 7, June 2026, 100189