Periodic mesoporous organosilica-doped nanocomposite membranes and systems including same

Patent metadata

Field	Value
Publication number	US-11260352-B2
Application number	US-201716311080-A
Country	US
Kind code	B2
Filing date	Jun 7, 2017
Priority date	Jun 20, 2016
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

A periodic mesoporous organosilica (PMO) nanoparticle functionalized nanocomposite membrane (NCM) for membrane distillation, the NCM including: polymer fibers such as polyetherimide fibers aggregated into a matrix; and hydrophobic PMO nanoparticles disposed on the polymer fibers. The PMO nanoparticles include a framework connected by organic groups and pentafluorophenyl groups. Good membrane flux and anti-fouling was demonstrated. Membranes can be prepared by electrospinning.

First claim

What is claimed is:

1. A nanocomposite membrane (NCM) for membrane distillation, the NCM comprising:
polymer fibers aggregated into a matrix; and
periodic mesoporous organosilica (PMO) nanoparticles disposed on the polymer fibers, the PMO nanoparticles comprising hydrophobic functional groups comprising pentafluorinated organic groups.

2. The NCM of claim 1 , wherein the fluorinated organic groups comprise pentafluorophenyl groups.

3. The NCM of claim 2 , wherein the pentafluorophenyl groups are covalently bonded to silicon atoms of the PMO nanoparticles.

4. The NCM of claim 1 , wherein the PMO nanoparticles comprise —CH 2 — bivalent groups.

5. The NCM of claim 1 , wherein the polymer fibers comprise polyetherimide (PEI), poly vinylidene fluoride (PVDF), poly(methyl methacrylate (PMMA), polysulfone, or any combination thereof.

6. The NCM of claim 1 , wherein the polymer fibers comprise polyetherimide (PEI).

7. The NCM of claim 1 , wherein the PMO nanoparticles are spherical particles having an average diameter of from 50 nm to 500 nm.

8. A method of forming the NCM of claim 1 , the method comprising a step of electrospinning a polymer composition comprising the PMO nanoparticles comprising pentafluorinated organic groups.

9. A nanocomposite membrane (NCM) for membrane distillation, the NCM comprising:
polyetherimide (PEI) fibers aggregated into a matrix; and

periodic mesoporous organosilica (PMO) nanoparticles disposed on the PEI fibers, the PMO nanoparticles comprising hydrophobic functional groups comprising pentafluorinated organic groups.

10. The NCM of claim 9 , wherein the PEI fibers having a fiber diameter is ranging from about 200 to about 600 nm.

11. The NCM of claim 9 , wherein the PMO nanoparticles are spherical particles having an average diameter of from 50 nm to 500 nm.

Assignees

• Univ King Abdullah Sci & Tech

Inventors

• Hammami Mohamed Amen
• Francis Lijo
• Croissant Jonas
• Ghaffour Noreddine
• Alsaiari Shahad
• Khashab Niveen M

Classifications

• B01D71/70 Primary

  Polymers having silicon in the main chain, with or without sulfur, nitrogen, oxygen or carbon only · CPC title

• B01D71/643

  Polyether-imides · CPC title

• B01D67/0093

  Chemical modification · CPC title

• B01D67/00042

  by deposition of fibres, nanofibres or nanofibrils · CPC title

• B01D67/00793

  Dispersing a component, e.g. as particles or powder, in another component · CPC title