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Related Concept Videos

Types of Step-Growth Polymers: Polyesters01:20

Types of Step-Growth Polymers: Polyesters

The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the polymer...
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Detergents are used to purify the integral proteins of the membrane. The hydrophobic portion of the detergent can replace membrane phospholipids while solubilizing the membrane proteins. When detergent monomers reach a specific concentration in a solution called critical micelle concentration (CMC), they form micelles. Above CMC, the concentration of the detergent monomers remains in equilibrium with the micelle. The number of detergent monomers present in the CMC varies for each detergent, and...
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Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...

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Related Experiment Video

Updated: Jun 13, 2026

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes
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Interfacial Polycondensation Kinetics Regulation Enables Microporous Polyesteramide Membranes for Ultraselective

Fuxin Zheng1, Zhenxiang Pan1, Adithya Patabendige1

  • 1College of Environmental Science and Engineering, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, 38 Tongyan Road, Tianjin 300350 China.

Environmental Science & Technology
|June 12, 2026
PubMed
Summary

Plant polyphenols create advanced polyesteramide membranes for efficient water purification. This novel method enhances microporosity and chlorine resistance, outperforming traditional polyamide membranes for organic pollutant removal.

Keywords:
interfacial polymerizationmicropollutantsnanofiltrationpolyesteramide membranewater purification

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Area of Science:

  • Materials Science
  • Environmental Science
  • Chemical Engineering

Background:

  • Polyamide (PA) nanofiltration (NF) membranes are vital for water purification but struggle with controlled microporosity and oxidation resistance.
  • Developing energy-efficient water purification methods with enhanced selectivity and durability is a critical challenge.

Purpose of the Study:

  • To develop a generalizable method for synthesizing high-performance polyesteramide (PEA) NF membranes with improved microporosity and oxidation resistance.
  • To investigate the role of plant polyphenols in interfacial polymerization for precise membrane fabrication.

Main Methods:

  • Implemented a plant polyphenol-regulated interfacial polymerization (PP-RIP) strategy using piperazine and trimesoyl chloride.
  • Utilized deprotonated polyphenols to copolymerize, incorporate polyester segments, and control monomer diffusion kinetics.
  • Fabricated ultrathin PEA membranes with tailored surface charge and enhanced microporosity.

Main Results:

  • Achieved ultrathin PEA membranes with well-defined surface charge and significantly enhanced microporosity.
  • Demonstrated ultrahigh water permeance (33.7 L m⁻²h⁻¹bar⁻¹) and superior selectivity for organic micropollutants (OMPs) over water and mineral ions.
  • Exhibited exceptional chlorine resistance, surpassing conventional PA membranes and commercial benchmarks.

Conclusions:

  • The PP-RIP strategy offers precise control over membrane structure and properties for advanced water purification.
  • PEA membranes synthesized via PP-RIP present a promising alternative to conventional PA membranes, offering superior performance and durability.
  • This approach is extendable to various plant polyphenol systems, paving the way for novel high-performance membrane synthesis.