Details
| Original language | English |
|---|---|
| Title of host publication | Advanced Materials Forum V |
| Editors | Luis Guerra Rosa, Luis Guerra Rosa, Fernanda Margarido, Fernanda Margarido |
| Pages | 819-824 |
| Number of pages | 6 |
| Publication status | Published - 2010 |
| Externally published | Yes |
| Event | 5th International Materials Symposium MATERIAiS 2009 - 14th meeting of SPM - Sociedade Portuguesa de Materiais - Lisbon, Portugal Duration: 5 Apr 2009 → 8 Apr 2009 |
Publication series
| Name | Materials Science Forum |
|---|---|
| Volume | 636-637 |
| ISSN (Print) | 0255-5476 |
| ISSN (electronic) | 1662-9752 |
Abstract
In the present study biodegradable copolymers of ethylene vinyl acetate and polylactic acid were synthesized using transesterification reactions, the structure, morphology, mechanical properties and biodegradability of the produced materials were characterized. Ethylene vinyl acetate was modified with polylactic acid in an internal mixer using titanium propoxide as transesterification catalyst. The graft copolymers were characterized by elemental analysis, infrared spectroscopy, rheology, scanning electron microscopy and thermal analysis. Selective extractions for all copolymers were made, and the results indicate that a maximum of 25 % of EVA-g-PLA copolymer was synthesized by this method. Biodegradation tests were carried out using the standard ISO 14851 (1999), which specifies a method for determining the biochemical oxygen demand in a closed respirometer. This procedure allowed to synthesize biodegradable copolymers with mechanical properties similar to conventional polymers.
Keywords
- BOD, Copolymers, EVA, PLA
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
Cite this
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Advanced Materials Forum V. ed. / Luis Guerra Rosa; Luis Guerra Rosa; Fernanda Margarido; Fernanda Margarido. 2010. p. 819-824 (Materials Science Forum; Vol. 636-637).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Synthesis of biodegradable copolymers based on ethylene vinyl acetate and polylactic acid
AU - Moura, I.
AU - Machado, A. V.
AU - Nogueira, R.
AU - Bounor-Legare, V.
PY - 2010
Y1 - 2010
N2 - In the present study biodegradable copolymers of ethylene vinyl acetate and polylactic acid were synthesized using transesterification reactions, the structure, morphology, mechanical properties and biodegradability of the produced materials were characterized. Ethylene vinyl acetate was modified with polylactic acid in an internal mixer using titanium propoxide as transesterification catalyst. The graft copolymers were characterized by elemental analysis, infrared spectroscopy, rheology, scanning electron microscopy and thermal analysis. Selective extractions for all copolymers were made, and the results indicate that a maximum of 25 % of EVA-g-PLA copolymer was synthesized by this method. Biodegradation tests were carried out using the standard ISO 14851 (1999), which specifies a method for determining the biochemical oxygen demand in a closed respirometer. This procedure allowed to synthesize biodegradable copolymers with mechanical properties similar to conventional polymers.
AB - In the present study biodegradable copolymers of ethylene vinyl acetate and polylactic acid were synthesized using transesterification reactions, the structure, morphology, mechanical properties and biodegradability of the produced materials were characterized. Ethylene vinyl acetate was modified with polylactic acid in an internal mixer using titanium propoxide as transesterification catalyst. The graft copolymers were characterized by elemental analysis, infrared spectroscopy, rheology, scanning electron microscopy and thermal analysis. Selective extractions for all copolymers were made, and the results indicate that a maximum of 25 % of EVA-g-PLA copolymer was synthesized by this method. Biodegradation tests were carried out using the standard ISO 14851 (1999), which specifies a method for determining the biochemical oxygen demand in a closed respirometer. This procedure allowed to synthesize biodegradable copolymers with mechanical properties similar to conventional polymers.
KW - BOD
KW - Copolymers
KW - EVA
KW - PLA
UR - http://www.scopus.com/inward/record.url?scp=75649113417&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/MSF.636-637.819
DO - 10.4028/www.scientific.net/MSF.636-637.819
M3 - Conference contribution
AN - SCOPUS:75649113417
SN - 0878492887
SN - 9780878492886
T3 - Materials Science Forum
SP - 819
EP - 824
BT - Advanced Materials Forum V
A2 - Rosa, Luis Guerra
A2 - Rosa, Luis Guerra
A2 - Margarido, Fernanda
A2 - Margarido, Fernanda
T2 - 5th International Materials Symposium MATERIAiS 2009 - 14th meeting of SPM - Sociedade Portuguesa de Materiais
Y2 - 5 April 2009 through 8 April 2009
ER -