Facile synthesis and characterization of activated star-shaped itaconic acid based thermosetting resins

Facile synthesis and characterization of activated star-shaped itaconic acid based thermosetting... Novel star-shaped thermosetting resins were synthesized by condensation-reaction of itaconic acid and glycerol, followed by treatment of the oligomers, by methanol and allyl alcohol. Employing 1H and 13C NMR and FT-IR, the chemical structures of the resins were studied. The thermomechanical properties were evaluated by Differential Scanning Calorimetry (DSC) and Dynamic Mechanical Analysis (DMA). Viscometry and thermogravimetric analyses (TGA) were also employed to study the rheological and thermal properties of samples. The viscosity of the methanol-treated resin was 4.2 Pa s at 25 °C, which dropped to 0.25 Pa s at 70 °C. The allyl alcohol-treated resin showed a lower viscosity (1.8 Pa s at room temperature, and 0.14 Pa s at 70 °C). A substantially higher glass temperature (Tg) was recorded for methanol-treated resin (150 °C) compared to that of the allyl alcohol-treated resin (93 °C). Compared to the allyl alcohol-treated resin, very good mechanical properties for the methanol-treated resin was achieved, in terms of storage modulus, (61% higher G′). Excellent environmental profile (i.e. high biobased contents and biodegradability), inexpensive raw materials, along with promising rheological and thermomechanical properties are advantages of these novel resins, which make the resins comparable with, and superior in some aspects, to other thermosetting systems. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Polymer Degradation and Stability Elsevier

Facile synthesis and characterization of activated star-shaped itaconic acid based thermosetting resins

Loading next page...
 
/lp/elsevier/facile-synthesis-and-characterization-of-activated-star-shaped-AVpHY7y0wC
Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier Ltd
ISSN
0141-3910
D.O.I.
10.1016/j.polymdegradstab.2018.04.035
Publisher site
See Article on Publisher Site

Abstract

Novel star-shaped thermosetting resins were synthesized by condensation-reaction of itaconic acid and glycerol, followed by treatment of the oligomers, by methanol and allyl alcohol. Employing 1H and 13C NMR and FT-IR, the chemical structures of the resins were studied. The thermomechanical properties were evaluated by Differential Scanning Calorimetry (DSC) and Dynamic Mechanical Analysis (DMA). Viscometry and thermogravimetric analyses (TGA) were also employed to study the rheological and thermal properties of samples. The viscosity of the methanol-treated resin was 4.2 Pa s at 25 °C, which dropped to 0.25 Pa s at 70 °C. The allyl alcohol-treated resin showed a lower viscosity (1.8 Pa s at room temperature, and 0.14 Pa s at 70 °C). A substantially higher glass temperature (Tg) was recorded for methanol-treated resin (150 °C) compared to that of the allyl alcohol-treated resin (93 °C). Compared to the allyl alcohol-treated resin, very good mechanical properties for the methanol-treated resin was achieved, in terms of storage modulus, (61% higher G′). Excellent environmental profile (i.e. high biobased contents and biodegradability), inexpensive raw materials, along with promising rheological and thermomechanical properties are advantages of these novel resins, which make the resins comparable with, and superior in some aspects, to other thermosetting systems.

Journal

Polymer Degradation and StabilityElsevier

Published: Jul 1, 2018

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 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

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