TY  - CONF
AU  - Džunuzović, Enis S.
AU  - Tasić, Srba V.
AU  - Božić, Branislav R.
AU  - Džunuzović, Jasna
AU  - Dunjić, Branko M.
AU  - Jeremić, Katarina B.
PY  - 2010
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6749
AB  - Ispitivane su smeše uretan akrilata na bazi linearnog poliestra i dva uretan akrilata, sa istim
stepenom akrilovanja, na bazi alifatskih hiperrazgranatih poliestara (HRP). Linearni poliestar
sintetisan je od neopentil glikola i adipinske kiseline. HRP treće generacije dobijen je od 2,2-
bis(hidroksimetil)propionske kiseline i di-trimetilol propana. Modifikacija 60 % završnih OH
grupa HRP-a izvedena je masnim kiselinama sojinog ulja ili izononskom kiselinom. Linearni
uretan akrilat (LUA) i hiperrazgranati uretan akrilat (HUA) na bazi HRP modifikovanog masnim
kiselinama sojinog ulja i HUA na bazi HRP modifikovanog izononskom kiselinom dobijeni su
reakcijom određenog poliestra i izocijanatnog adukta, prethodno dobijenog reakcijom
ekvimolarnih količina izoforon diizocijanata i 2-hidroksietil akrilata. Procena mešljivosti smeša
LUA i HUA izvršena je na osnovu viskozimetrijskih merenja koristeći metodu koju je ustanovio
Chee. Ovako pripremljenim smešama dodato je 20 mas. % heksandioldiakrilata i 4 mas. %
fotoinicijatora, Irgacure 184, i umrežene su pod dejstvom UV zračenja. Umreženi uzorci ispitivani
su u ogledima dinamičkog uvijanja i jednoosnog istezanja. Mehanička svojstva umreženih uzoraka
zavise od mešljivosti komponenata smeše i od njenog sastava.
AB  - The mixtures of urethane acrylate resin based on linear polyester and two urethane acrylates, with 
the same degree of acrylation, prepared from partially modified aliphatic hyperbranched polyesters 
(HBP), were examined. Linear polyester was obtained from neopentil glycol and adipic acid. HBP 
of the third generation was synthesized from 2,2-bis(hydroxymethyl)propionic acid and ditrimethylol propane. The modification of 60 % OH end-groups of HBP was carried out with soybean fatty acids or isononanoic acid. Linear urethane acrylate (LUA) and hyperbranched urethane acrylate (HUA) based on the HBP modified with soy been faty acid and HUA based on the HBP modified with isononanoic acid were obtained by reaction of appropriate polyester and NCO adduct, previously obtained by reaction of equimolar amount of isophorone diisocyanate and 2-hydroxyethyl acrylate. The miscibility of the prepared mixtures of LUA and HUAs was estimated according to viscosity measurements using the approach developed by Chee. UV curable formulation was obtained by adding hexanediol diacrylate (20 wt. %) and photoinitiator, Irgacure 184, (4 wt. %) to the prepared LUA and HUA mixtures. The UV cured samples were examined by dynamic torsion and uniaxial tension. It was obtained that mechanical properties of the UV cured samples depend on miscibility of mixture’s constituents and on its composition.
PB  - Belgrade : Serbian Chemical Society
C3  - 49th Meeting of the Serbian Chemical Society, Programme  &  Book of Abstracts, Kragujevac, May 13-14, 2010, Serbia / Program i kratki izvodi radova - XLIX Savetovanje Srpskog hemijskog društva, 13-14 maj 2010, Kragujevac
T1  - Mehanička svojstva smeša linernog i hiperrazgranatih uretan akrilata umreženih dejstvom UV zračenja
T1  - Mechanical Properties of UV Cured Mixture of Linear and Hyperbranched Urethane Acrylates
SP  - 118
EP  - 118
UR  - https://hdl.handle.net/21.15107/rcub_cer_6749
ER  - 

@conference{
author = "Džunuzović, Enis S. and Tasić, Srba V. and Božić, Branislav R. and Džunuzović, Jasna and Dunjić, Branko M. and Jeremić, Katarina B.",
year = "2010",
abstract = "Ispitivane su smeše uretan akrilata na bazi linearnog poliestra i dva uretan akrilata, sa istim
stepenom akrilovanja, na bazi alifatskih hiperrazgranatih poliestara (HRP). Linearni poliestar
sintetisan je od neopentil glikola i adipinske kiseline. HRP treće generacije dobijen je od 2,2-
bis(hidroksimetil)propionske kiseline i di-trimetilol propana. Modifikacija 60 % završnih OH
grupa HRP-a izvedena je masnim kiselinama sojinog ulja ili izononskom kiselinom. Linearni
uretan akrilat (LUA) i hiperrazgranati uretan akrilat (HUA) na bazi HRP modifikovanog masnim
kiselinama sojinog ulja i HUA na bazi HRP modifikovanog izononskom kiselinom dobijeni su
reakcijom određenog poliestra i izocijanatnog adukta, prethodno dobijenog reakcijom
ekvimolarnih količina izoforon diizocijanata i 2-hidroksietil akrilata. Procena mešljivosti smeša
LUA i HUA izvršena je na osnovu viskozimetrijskih merenja koristeći metodu koju je ustanovio
Chee. Ovako pripremljenim smešama dodato je 20 mas. % heksandioldiakrilata i 4 mas. %
fotoinicijatora, Irgacure 184, i umrežene su pod dejstvom UV zračenja. Umreženi uzorci ispitivani
su u ogledima dinamičkog uvijanja i jednoosnog istezanja. Mehanička svojstva umreženih uzoraka
zavise od mešljivosti komponenata smeše i od njenog sastava., The mixtures of urethane acrylate resin based on linear polyester and two urethane acrylates, with 
the same degree of acrylation, prepared from partially modified aliphatic hyperbranched polyesters 
(HBP), were examined. Linear polyester was obtained from neopentil glycol and adipic acid. HBP 
of the third generation was synthesized from 2,2-bis(hydroxymethyl)propionic acid and ditrimethylol propane. The modification of 60 % OH end-groups of HBP was carried out with soybean fatty acids or isononanoic acid. Linear urethane acrylate (LUA) and hyperbranched urethane acrylate (HUA) based on the HBP modified with soy been faty acid and HUA based on the HBP modified with isononanoic acid were obtained by reaction of appropriate polyester and NCO adduct, previously obtained by reaction of equimolar amount of isophorone diisocyanate and 2-hydroxyethyl acrylate. The miscibility of the prepared mixtures of LUA and HUAs was estimated according to viscosity measurements using the approach developed by Chee. UV curable formulation was obtained by adding hexanediol diacrylate (20 wt. %) and photoinitiator, Irgacure 184, (4 wt. %) to the prepared LUA and HUA mixtures. The UV cured samples were examined by dynamic torsion and uniaxial tension. It was obtained that mechanical properties of the UV cured samples depend on miscibility of mixture’s constituents and on its composition.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "49th Meeting of the Serbian Chemical Society, Programme  &  Book of Abstracts, Kragujevac, May 13-14, 2010, Serbia / Program i kratki izvodi radova - XLIX Savetovanje Srpskog hemijskog društva, 13-14 maj 2010, Kragujevac",
title = "Mehanička svojstva smeša linernog i hiperrazgranatih uretan akrilata umreženih dejstvom UV zračenja, Mechanical Properties of UV Cured Mixture of Linear and Hyperbranched Urethane Acrylates",
pages = "118-118",
url = "https://hdl.handle.net/21.15107/rcub_cer_6749"
}

Džunuzović, E. S., Tasić, S. V., Božić, B. R., Džunuzović, J., Dunjić, B. M.,& Jeremić, K. B.. (2010). Mehanička svojstva smeša linernog i hiperrazgranatih uretan akrilata umreženih dejstvom UV zračenja. in 49th Meeting of the Serbian Chemical Society, Programme  &  Book of Abstracts, Kragujevac, May 13-14, 2010, Serbia / Program i kratki izvodi radova - XLIX Savetovanje Srpskog hemijskog društva, 13-14 maj 2010, Kragujevac
Belgrade : Serbian Chemical Society., 118-118.
https://hdl.handle.net/21.15107/rcub_cer_6749

Džunuzović ES, Tasić SV, Božić BR, Džunuzović J, Dunjić BM, Jeremić KB. Mehanička svojstva smeša linernog i hiperrazgranatih uretan akrilata umreženih dejstvom UV zračenja. in 49th Meeting of the Serbian Chemical Society, Programme  &  Book of Abstracts, Kragujevac, May 13-14, 2010, Serbia / Program i kratki izvodi radova - XLIX Savetovanje Srpskog hemijskog društva, 13-14 maj 2010, Kragujevac. 2010;:118-118.
https://hdl.handle.net/21.15107/rcub_cer_6749 .

Džunuzović, Enis S., Tasić, Srba V., Božić, Branislav R., Džunuzović, Jasna, Dunjić, Branko M., Jeremić, Katarina B., "Mehanička svojstva smeša linernog i hiperrazgranatih uretan akrilata umreženih dejstvom UV zračenja" in 49th Meeting of the Serbian Chemical Society, Programme  &  Book of Abstracts, Kragujevac, May 13-14, 2010, Serbia / Program i kratki izvodi radova - XLIX Savetovanje Srpskog hemijskog društva, 13-14 maj 2010, Kragujevac (2010):118-118,
https://hdl.handle.net/21.15107/rcub_cer_6749 .

TY  - CONF
AU  - Marinović, Sanja
AU  - Stanković, Zoran
AU  - Tasić, Srba
AU  - Božić, Branislav
PY  - 2004
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6774
AB  - The aim of this work was to explore influence of hyperbranched polymers (HBP) on mechanical, thermal and dielectric properties of interpenetrating polymer networks (IPN), expecting to get a material with properties more superior then other known materials.
A combination of two polymers, in network form, of which at least one is synthesized and/or cross-linked in the immediate presence of the other without any covalent bonds between them. Most IPNs are heterogeneous systems comprised of one rubbery phase and one glassy phase which produce a synergistic effect yielding either high impact strength or reinforcement, both of which are dependent on phase continuity.
IPNs offer the possibility of combining in network form two otherwise non-compatible polymers with opposite properties. Similar to other multicomponent polymeric systems, the properties of the final product depend strongly on miscibility of the components.
In this case, IPNs based on hyperbranched polyesters have been made. All the IPNs are consist of acrylic component, cross-linked by photopolymerisation under UV-lamp, and urethane component, cross-linked by heating .
Hyperbranched polyesters, used in IPN samples were synthesized in three forms: 1) Hyperbranched polyester which has 25% of hydroxyl groups modified by 3,5,5-trimethyl hexanoic acid (isononanoic acid) -HBP(OH);
2) HBP(OH) which has 50% of hydroxyl groups acrylated-HBP(A)6
3) HBP(OH) which has 100% of hydroxyl groups acrylated-HBP(A)12.

We’ve made four groups of IPNs. The first was consisted of IPNs in which ratio of HBP(A)12 and ethyl hexyl acrylate (EHA) has been changed, keeping urethan component the same in all samples. Second group was the same as the first one, with only difference that HBP(A)12 has been changed with hexandiol diacrylate (HDDA). Third group contained IPNs in which hydroxyl acrylate has been changed with HBP(OH), and fourth group contained IPNs consisted of HBP(A)6.
IPNs have been characterized by Dynamic mechanical analysis (DMA), Differential scanning calorimetry (DSC); Dielectric analysis (DEA) and Thermo gravimetric analysis (TGA). We have compared results for samples inside groups, and correspondents between two groups.
It’s turned out that IPN correspondents in first and second group have similar behavior. We have also seen that IPNs with 50:50 ratio of HBP(A)12 : EHA in first, and HDDA ; EHA in second group had the best thermal stability and the highest glass temperature (Tg). Also, IPNs with HBP(OH) in urethane component (III group) had The highest Tgs then all other IPNs.
PB  - Belgrade : Serbian Chemical Society
C3  - Book of abstracts - 4th International Conference on the Chemical Societies of the South-East European Chemical Societies, ICOSECS4, July 18-21. 2004, Belgrade, Serbia
T1  - Hyperbranched acrylates in dual-curing systems
VL  - 2
SP  - 57
EP  - 57
UR  - https://hdl.handle.net/21.15107/rcub_cer_6774
ER  - 

@conference{
author = "Marinović, Sanja and Stanković, Zoran and Tasić, Srba and Božić, Branislav",
year = "2004",
abstract = "The aim of this work was to explore influence of hyperbranched polymers (HBP) on mechanical, thermal and dielectric properties of interpenetrating polymer networks (IPN), expecting to get a material with properties more superior then other known materials.
A combination of two polymers, in network form, of which at least one is synthesized and/or cross-linked in the immediate presence of the other without any covalent bonds between them. Most IPNs are heterogeneous systems comprised of one rubbery phase and one glassy phase which produce a synergistic effect yielding either high impact strength or reinforcement, both of which are dependent on phase continuity.
IPNs offer the possibility of combining in network form two otherwise non-compatible polymers with opposite properties. Similar to other multicomponent polymeric systems, the properties of the final product depend strongly on miscibility of the components.
In this case, IPNs based on hyperbranched polyesters have been made. All the IPNs are consist of acrylic component, cross-linked by photopolymerisation under UV-lamp, and urethane component, cross-linked by heating .
Hyperbranched polyesters, used in IPN samples were synthesized in three forms: 1) Hyperbranched polyester which has 25% of hydroxyl groups modified by 3,5,5-trimethyl hexanoic acid (isononanoic acid) -HBP(OH);
2) HBP(OH) which has 50% of hydroxyl groups acrylated-HBP(A)6
3) HBP(OH) which has 100% of hydroxyl groups acrylated-HBP(A)12.

We’ve made four groups of IPNs. The first was consisted of IPNs in which ratio of HBP(A)12 and ethyl hexyl acrylate (EHA) has been changed, keeping urethan component the same in all samples. Second group was the same as the first one, with only difference that HBP(A)12 has been changed with hexandiol diacrylate (HDDA). Third group contained IPNs in which hydroxyl acrylate has been changed with HBP(OH), and fourth group contained IPNs consisted of HBP(A)6.
IPNs have been characterized by Dynamic mechanical analysis (DMA), Differential scanning calorimetry (DSC); Dielectric analysis (DEA) and Thermo gravimetric analysis (TGA). We have compared results for samples inside groups, and correspondents between two groups.
It’s turned out that IPN correspondents in first and second group have similar behavior. We have also seen that IPNs with 50:50 ratio of HBP(A)12 : EHA in first, and HDDA ; EHA in second group had the best thermal stability and the highest glass temperature (Tg). Also, IPNs with HBP(OH) in urethane component (III group) had The highest Tgs then all other IPNs.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Book of abstracts - 4th International Conference on the Chemical Societies of the South-East European Chemical Societies, ICOSECS4, July 18-21. 2004, Belgrade, Serbia",
title = "Hyperbranched acrylates in dual-curing systems",
volume = "2",
pages = "57-57",
url = "https://hdl.handle.net/21.15107/rcub_cer_6774"
}

Marinović, S., Stanković, Z., Tasić, S.,& Božić, B.. (2004). Hyperbranched acrylates in dual-curing systems. in Book of abstracts - 4th International Conference on the Chemical Societies of the South-East European Chemical Societies, ICOSECS4, July 18-21. 2004, Belgrade, Serbia
Belgrade : Serbian Chemical Society., 2, 57-57.
https://hdl.handle.net/21.15107/rcub_cer_6774

Marinović S, Stanković Z, Tasić S, Božić B. Hyperbranched acrylates in dual-curing systems. in Book of abstracts - 4th International Conference on the Chemical Societies of the South-East European Chemical Societies, ICOSECS4, July 18-21. 2004, Belgrade, Serbia. 2004;2:57-57.
https://hdl.handle.net/21.15107/rcub_cer_6774 .

Marinović, Sanja, Stanković, Zoran, Tasić, Srba, Božić, Branislav, "Hyperbranched acrylates in dual-curing systems" in Book of abstracts - 4th International Conference on the Chemical Societies of the South-East European Chemical Societies, ICOSECS4, July 18-21. 2004, Belgrade, Serbia, 2 (2004):57-57,
https://hdl.handle.net/21.15107/rcub_cer_6774 .