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Shape Memory Polymers for Active Cell Culture

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Published on: July 4, 2011

A star-shaped POSS-containing polymer for cleaner leather processing.

Lu Jia¹, Jianzhong Ma², Dangge Gao²

¹College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, China; Polymer Program, Institute of Materials Science and Department of Chemical & Biomolecular Engineering, University of Connecticut, Storrs, CT, 06269, USA.

Journal of Hazardous Materials

|September 15, 2018

Summary

This summary is machine-generated.

A novel polymer, polyoxometalate-poly(acrylic acid) (POSS-PAA), enhances leather tanning. This cleaner production method improves leather quality and significantly reduces chromium waste in wastewater.

Keywords:

Cleaner tanning Interfacial polymerization POSS Star-shaped polymer

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Area of Science:

Materials Science
Polymer Chemistry
Environmental Science

Background:

Traditional leather tanning uses chromium, posing environmental challenges.
Developing sustainable alternatives is crucial for the leather industry.

Purpose of the Study:

To synthesize and characterize a novel water-based polymer, POSS-PAA, for cleaner leather production.
To evaluate the effectiveness of POSS-PAA in improving leather properties and reducing environmental impact.

Main Methods:

Interfacial polymerization of octavinyl-POSS (V-POSS) and acrylic acid (AA) to form POSS-PAA.
Transmission Electron Microscopy (TEM) for structural analysis.
Leather tanning experiments using POSS-PAA, linear PAA, and chromium tanning agent.
Shrinkage temperature, thickening rate, Energy-Dispersive X-ray Spectroscopy (EDS), and wastewater analysis (Cr2O3, COD, BOD) for evaluation.

Main Results:

POSS-PAA exhibited a well-dispersed core-shell structure.
POSS-PAA treatment increased leather shrinkage temperature and thickening rate.
Enhanced chromium uptake and uniform distribution in POSS-PAA treated leather.
Significant reduction (approx. 50%) in Cr2O3, COD, and BOD in wastewater from POSS-PAA pre-treatment.

Conclusions:

POSS-PAA is a promising material for developing cleaner leather production processes.
The polymer improves leather quality while mitigating environmental pollution from tanning waste.