Synthesis, characterization and thermal properties of PMMA/CuO polymeric nanocomposites

Synthesis, characterization and thermal properties of PMMA/CuO polymeric nanocomposites The CuO nanoparticles (NPs) were prepared by the reaction of Cu(NO3)2·3H2O with caustic soda followed by calcination of the obtained precipitate at 400 °C for 4 h. The surface of as-prepared CuO NPs was then modified by oleic acid in order to act as a good dispersibility of NPs with organic media. Surface modification of CuO NPs was confirmed through lipophilic degree (LD). The results revealed that LD increased with the rising amount of oleic acid up to 9 wt%. Optimum modification was obtained at 65 °C and 5 h for reaction time. The modified NPs were dispersed in methyl methacrylate (MMA) monomer, and PMMA/CuO polymeric nanocomposites (PNCs) were synthesized via in situ emulsion polymerization. The CuO NPs, modified NPs and PMMA/CuO PNCs were characterized by XRD, FT-IR, SEM, EDX and XPS spectra. The average crystallite sizes of CuO NPs and modified CuO NPs that are calculated from XRD diffraction are 45 and 60 nm respectively. The morphological observation revealed that CuO NPs were embedded homogeneously in the inner part of PMMA. In addition, the particles are distributed better and more uniformly (monodisperse) in the PNCs. Two peaks observed at about 933.8 and 953.8 eV in XPS spectra are corresponded to Cu2p3/2 and Cu2p1/2 of Cu2+ in CuO NPs respectively. The thermal stability of PMMA/CuO PNCs was studied using TGA and DSC techniques. The prepared PMMA/CuO PNCs have glass transition temperature up to 22 °C and thermal degradation temperature up to 60 °C higher than PMMA. The photo-catalytic activity of CuO NPs, modified NPs and PMMA/CuO PNCs was investigated in the degradation of methyl orange (MO) under UV radiation. The PDP of methyl orange took place by 80% for 8 h in the presence of CuO NPs, while it dropped by 55 and 30% in the presence of CuO NPs modified by stearic acid and grafted by PMMA respectively. The results showed that PDP of MO solution by CuO NPs decreases when modified using oleic acid and/or grafted on PMMA. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Materials Science: Materials in Electronics Springer Journals

Synthesis, characterization and thermal properties of PMMA/CuO polymeric nanocomposites

Loading next page...
 
/lp/springer_journal/synthesis-characterization-and-thermal-properties-of-pmma-cuo-h0bwND8JuB
Publisher
Springer US
Copyright
Copyright © 2017 by Springer Science+Business Media, LLC, part of Springer Nature
Subject
Materials Science; Optical and Electronic Materials; Characterization and Evaluation of Materials
ISSN
0957-4522
eISSN
1573-482X
D.O.I.
10.1007/s10854-017-8440-y
Publisher site
See Article on Publisher Site

Abstract

The CuO nanoparticles (NPs) were prepared by the reaction of Cu(NO3)2·3H2O with caustic soda followed by calcination of the obtained precipitate at 400 °C for 4 h. The surface of as-prepared CuO NPs was then modified by oleic acid in order to act as a good dispersibility of NPs with organic media. Surface modification of CuO NPs was confirmed through lipophilic degree (LD). The results revealed that LD increased with the rising amount of oleic acid up to 9 wt%. Optimum modification was obtained at 65 °C and 5 h for reaction time. The modified NPs were dispersed in methyl methacrylate (MMA) monomer, and PMMA/CuO polymeric nanocomposites (PNCs) were synthesized via in situ emulsion polymerization. The CuO NPs, modified NPs and PMMA/CuO PNCs were characterized by XRD, FT-IR, SEM, EDX and XPS spectra. The average crystallite sizes of CuO NPs and modified CuO NPs that are calculated from XRD diffraction are 45 and 60 nm respectively. The morphological observation revealed that CuO NPs were embedded homogeneously in the inner part of PMMA. In addition, the particles are distributed better and more uniformly (monodisperse) in the PNCs. Two peaks observed at about 933.8 and 953.8 eV in XPS spectra are corresponded to Cu2p3/2 and Cu2p1/2 of Cu2+ in CuO NPs respectively. The thermal stability of PMMA/CuO PNCs was studied using TGA and DSC techniques. The prepared PMMA/CuO PNCs have glass transition temperature up to 22 °C and thermal degradation temperature up to 60 °C higher than PMMA. The photo-catalytic activity of CuO NPs, modified NPs and PMMA/CuO PNCs was investigated in the degradation of methyl orange (MO) under UV radiation. The PDP of methyl orange took place by 80% for 8 h in the presence of CuO NPs, while it dropped by 55 and 30% in the presence of CuO NPs modified by stearic acid and grafted by PMMA respectively. The results showed that PDP of MO solution by CuO NPs decreases when modified using oleic acid and/or grafted on PMMA.

Journal

Journal of Materials Science: Materials in ElectronicsSpringer Journals

Published: Dec 21, 2017

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve Freelancer

DeepDyve Pro

Price
FREE
$49/month

$360/year
Save searches from
Google Scholar,
PubMed
Create lists to
organize your research
Export lists, citations
Read DeepDyve articles
Abstract access only
Unlimited access to over
18 million full-text articles
Print
20 pages/month
PDF Discount
20% off