CER - Central Repository
Institute of Chemistry, Technology and Metallurgy
    • English
    • Српски
    • Српски (Serbia)
  • English 
    • English
    • Serbian (Cyrillic)
    • Serbian (Latin)
  • Login
View Item 
  •   CER
  • IHTM
  • Radovi istraživača / Researchers' publications
  • View Item
  •   CER
  • IHTM
  • Radovi istraživača / Researchers' publications
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Synthesis and characterization of a new type of levan-graft-polystyrene copolymer

Authorized Users Only
2016
Authors
Kekez, Branka
Gojgić-Cvijović, Gordana
Jakovljević, Dragica
Pavlović, Vladimir B.
Beškoski, Vladimir
Popović, Aleksandar R.
Vrvić, Miroslav
Nikolić, Vladimir
Article (Published version)
Metadata
Show full item record
Abstract
Novel macromolecular graft copolymers were synthesized by reaction of the hydroxyl groups of the microbial polysaccharide levan, produced using Bacillus licheniformis, with polystyrene (Lev-g-PS). Synthesis was performed by the free radical reaction using potassium persulfate (PPS) as initiator. The prepared copolymer was characterized by FTIR, SEM, TG/DTA, XRD and C-13 NMR. The influence of the different conditions (reaction temperature, air or nitrogen atmosphere, reaction time, type of amines and ascorbic acid (AA) concentration) on the grafting reaction was investigated. Results showed that maximum percentage of grafting (58.1%) was achieved at a reaction temperature 70 degrees C, in a nitrogen atmosphere and using dimethylethanolamine (DMEA) as the amine activator. On the basis of the obtained results, the likely reaction mechanism was proposed. Synthesized copolymers have better thermal stability in comparison with their initial components. Copolymers such as Lev-g-PS could poten...tially have many applications, such as compatibilizers and material for membranes.

Keywords:
Levan / Microbial polysaccharide / Styrene / Graft copolymer
Source:
Carbohydrate Polymers, 2016, 154, 20-29
Publisher:
  • Elsevier Sci Ltd, Oxford
Funding / projects:
  • Simultaneous Bioremediation and Soilification of Degraded Areas to Preserve Natural Resources of Biologically Active Substances, and Development and Production of Biomaterials and Dietetic Products (RS-43004)
  • The study of physicochemical and biochemical processes in living environment that have impacts on pollution and the investigation of possibilities for minimizing the consequences (RS-172001)

DOI: 10.1016/j.carbpol.2016.08.001

ISSN: 0144-8617

PubMed: 27577892

WoS: 000382318800004

Scopus: 2-s2.0-84981520571
[ Google Scholar ]
17
15
URI
https://cer.ihtm.bg.ac.rs/handle/123456789/1930
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
IHTM
TY  - JOUR
AU  - Kekez, Branka
AU  - Gojgić-Cvijović, Gordana
AU  - Jakovljević, Dragica
AU  - Pavlović, Vladimir B.
AU  - Beškoski, Vladimir
AU  - Popović, Aleksandar R.
AU  - Vrvić, Miroslav
AU  - Nikolić, Vladimir
PY  - 2016
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1930
AB  - Novel macromolecular graft copolymers were synthesized by reaction of the hydroxyl groups of the microbial polysaccharide levan, produced using Bacillus licheniformis, with polystyrene (Lev-g-PS). Synthesis was performed by the free radical reaction using potassium persulfate (PPS) as initiator. The prepared copolymer was characterized by FTIR, SEM, TG/DTA, XRD and C-13 NMR. The influence of the different conditions (reaction temperature, air or nitrogen atmosphere, reaction time, type of amines and ascorbic acid (AA) concentration) on the grafting reaction was investigated. Results showed that maximum percentage of grafting (58.1%) was achieved at a reaction temperature 70 degrees C, in a nitrogen atmosphere and using dimethylethanolamine (DMEA) as the amine activator. On the basis of the obtained results, the likely reaction mechanism was proposed. Synthesized copolymers have better thermal stability in comparison with their initial components. Copolymers such as Lev-g-PS could potentially have many applications, such as compatibilizers and material for membranes.
PB  - Elsevier Sci Ltd, Oxford
T2  - Carbohydrate Polymers
T1  - Synthesis and characterization of a new type of levan-graft-polystyrene copolymer
VL  - 154
SP  - 20
EP  - 29
DO  - 10.1016/j.carbpol.2016.08.001
ER  - 
@article{
author = "Kekez, Branka and Gojgić-Cvijović, Gordana and Jakovljević, Dragica and Pavlović, Vladimir B. and Beškoski, Vladimir and Popović, Aleksandar R. and Vrvić, Miroslav and Nikolić, Vladimir",
year = "2016",
abstract = "Novel macromolecular graft copolymers were synthesized by reaction of the hydroxyl groups of the microbial polysaccharide levan, produced using Bacillus licheniformis, with polystyrene (Lev-g-PS). Synthesis was performed by the free radical reaction using potassium persulfate (PPS) as initiator. The prepared copolymer was characterized by FTIR, SEM, TG/DTA, XRD and C-13 NMR. The influence of the different conditions (reaction temperature, air or nitrogen atmosphere, reaction time, type of amines and ascorbic acid (AA) concentration) on the grafting reaction was investigated. Results showed that maximum percentage of grafting (58.1%) was achieved at a reaction temperature 70 degrees C, in a nitrogen atmosphere and using dimethylethanolamine (DMEA) as the amine activator. On the basis of the obtained results, the likely reaction mechanism was proposed. Synthesized copolymers have better thermal stability in comparison with their initial components. Copolymers such as Lev-g-PS could potentially have many applications, such as compatibilizers and material for membranes.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Carbohydrate Polymers",
title = "Synthesis and characterization of a new type of levan-graft-polystyrene copolymer",
volume = "154",
pages = "20-29",
doi = "10.1016/j.carbpol.2016.08.001"
}
Kekez, B., Gojgić-Cvijović, G., Jakovljević, D., Pavlović, V. B., Beškoski, V., Popović, A. R., Vrvić, M.,& Nikolić, V.. (2016). Synthesis and characterization of a new type of levan-graft-polystyrene copolymer. in Carbohydrate Polymers
Elsevier Sci Ltd, Oxford., 154, 20-29.
https://doi.org/10.1016/j.carbpol.2016.08.001
Kekez B, Gojgić-Cvijović G, Jakovljević D, Pavlović VB, Beškoski V, Popović AR, Vrvić M, Nikolić V. Synthesis and characterization of a new type of levan-graft-polystyrene copolymer. in Carbohydrate Polymers. 2016;154:20-29.
doi:10.1016/j.carbpol.2016.08.001 .
Kekez, Branka, Gojgić-Cvijović, Gordana, Jakovljević, Dragica, Pavlović, Vladimir B., Beškoski, Vladimir, Popović, Aleksandar R., Vrvić, Miroslav, Nikolić, Vladimir, "Synthesis and characterization of a new type of levan-graft-polystyrene copolymer" in Carbohydrate Polymers, 154 (2016):20-29,
https://doi.org/10.1016/j.carbpol.2016.08.001 . .

DSpace software copyright © 2002-2015  DuraSpace
About CeR – Central Repository | Send Feedback

re3dataOpenAIRERCUB
 

 

All of DSpaceInstitutions/communitiesAuthorsTitlesSubjectsThis institutionAuthorsTitlesSubjects

Statistics

View Usage Statistics

DSpace software copyright © 2002-2015  DuraSpace
About CeR – Central Repository | Send Feedback

re3dataOpenAIRERCUB