TY  - CONF
AU  - Stefanović, Ivan
AU  - Pergal, Marija
AU  - Vasiljević-Radović, Dana
AU  - Gođevac, Dejan
AU  - Antić, Vesna
AU  - Đonlagić, Jasna
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6488
AB  - Polyurethane copolymers based on poly(dimethylsiloxane) represent an important class of thermoplastic elastomers, whirls due to good mechanical and surface properties as well as biocompatibility, may be of interest as biomaterials. In this work, the surface properties of a series of new thermoplastic polyurethanes (TPUs), based on 4,4'-methylenediphenyl diisocyanate and 1,4-butanediol as the hard segments and α,ω-dihydroxypropyl-poly(dimethylsiloxane) (PDMS) as the soft segments, were investigated. The molecular structure and composition of the copolymers were determined by 2D NMR and quantitative 13C NMR spectroscopy. Surface properties of the copolymers were investigated by water contact angle measurements, water absorption and atomic force microscopy (AFM). AFM analysis revealed existence of spherulitic morphology of the copolymers. Also, the results of AFM analysis showed that the coefficient of roughness of TPUs increased with increasing the hard segment content. The hydrophobicity of copolymers increased with increasing the weight fraction of PDMS. This behavior may be ascribed to a tendency of the PDMS segments to migrate on the surface of TPUs caused by its low surface energy.
AB  - Poliuretanski kopolimeri na bazi poli(dimetilsiloksana) predstavljaju važnu klasu termoplastičnih elastomera koji zbog izuzetnih mehaničkih i površinskih svojstava, kao i biokompatibilnosti, mogu biti interesantni kao biomaterijali. U ovom radu su ispitana površinska svojstva serije novih termoplastičnih poliuretana (TPUs) sa tvrdim segmentima na bazi 4,4'-metilendifenildiizocijanata i 1,4-butandiola i mekim segmentima na bazi α,ω-dihidroksipropil-poli(dimetilsiloksana) (PDMS). Struktura i sastav TPU su određeni 2D NMR i kvantitativnom 13C NMR spektroskopijom. Površinska svojstva TPU su ispitana određivanjem kontaktnih uglova i merenjem apsorpcije vode, kao i atomskom mikroskopijom sila (AFM). Na osnovu AFM analize uočeno je da kopolimeri pokazuju sferulitnu morfologiju. Takode, rezultati AFM analize su pokazali da se sa povećanjem sadržaja tvrdih segmenata povećavao koeficijent hrapavosti TPU. Hidrofobnost kopolimera je rasla sa povećanjem sadržaja PDMS-a. Ovo ponašanje se može pripisati tendenciji PDMS da migrira na površinu TPU, zbog male površinske energije PDMS-a.
PB  - Belgrade : Serbian Chemical Society
C3  - Program i kratki izvodi radova - 50. jubilarno savetovanje Srpskog hemijskog društva, 14-15.06.2012, Beograd / Program and Book of abstracts - 50th Golden Jubilee Meeting of the Serbian Chemical Society, 14-15. June 2012, Belgrade
T1  - Surface properties of polyurethane copolymers based on α,ω-dihydroxypropyl-poly(dimethylsiloxane)
T1  - Površinska svojstva poliuretanskih kopolimera na bazi α,ω-dihidroksipropil-poli(deimetilsiloksana)
SP  - 140
EP  - 140
UR  - https://hdl.handle.net/21.15107/rcub_cer_6488
ER  - 

@conference{
author = "Stefanović, Ivan and Pergal, Marija and Vasiljević-Radović, Dana and Gođevac, Dejan and Antić, Vesna and Đonlagić, Jasna",
year = "2012",
abstract = "Polyurethane copolymers based on poly(dimethylsiloxane) represent an important class of thermoplastic elastomers, whirls due to good mechanical and surface properties as well as biocompatibility, may be of interest as biomaterials. In this work, the surface properties of a series of new thermoplastic polyurethanes (TPUs), based on 4,4'-methylenediphenyl diisocyanate and 1,4-butanediol as the hard segments and α,ω-dihydroxypropyl-poly(dimethylsiloxane) (PDMS) as the soft segments, were investigated. The molecular structure and composition of the copolymers were determined by 2D NMR and quantitative 13C NMR spectroscopy. Surface properties of the copolymers were investigated by water contact angle measurements, water absorption and atomic force microscopy (AFM). AFM analysis revealed existence of spherulitic morphology of the copolymers. Also, the results of AFM analysis showed that the coefficient of roughness of TPUs increased with increasing the hard segment content. The hydrophobicity of copolymers increased with increasing the weight fraction of PDMS. This behavior may be ascribed to a tendency of the PDMS segments to migrate on the surface of TPUs caused by its low surface energy., Poliuretanski kopolimeri na bazi poli(dimetilsiloksana) predstavljaju važnu klasu termoplastičnih elastomera koji zbog izuzetnih mehaničkih i površinskih svojstava, kao i biokompatibilnosti, mogu biti interesantni kao biomaterijali. U ovom radu su ispitana površinska svojstva serije novih termoplastičnih poliuretana (TPUs) sa tvrdim segmentima na bazi 4,4'-metilendifenildiizocijanata i 1,4-butandiola i mekim segmentima na bazi α,ω-dihidroksipropil-poli(dimetilsiloksana) (PDMS). Struktura i sastav TPU su određeni 2D NMR i kvantitativnom 13C NMR spektroskopijom. Površinska svojstva TPU su ispitana određivanjem kontaktnih uglova i merenjem apsorpcije vode, kao i atomskom mikroskopijom sila (AFM). Na osnovu AFM analize uočeno je da kopolimeri pokazuju sferulitnu morfologiju. Takode, rezultati AFM analize su pokazali da se sa povećanjem sadržaja tvrdih segmenata povećavao koeficijent hrapavosti TPU. Hidrofobnost kopolimera je rasla sa povećanjem sadržaja PDMS-a. Ovo ponašanje se može pripisati tendenciji PDMS da migrira na površinu TPU, zbog male površinske energije PDMS-a.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Program i kratki izvodi radova - 50. jubilarno savetovanje Srpskog hemijskog društva, 14-15.06.2012, Beograd / Program and Book of abstracts - 50th Golden Jubilee Meeting of the Serbian Chemical Society, 14-15. June 2012, Belgrade",
title = "Surface properties of polyurethane copolymers based on α,ω-dihydroxypropyl-poly(dimethylsiloxane), Površinska svojstva poliuretanskih kopolimera na bazi α,ω-dihidroksipropil-poli(deimetilsiloksana)",
pages = "140-140",
url = "https://hdl.handle.net/21.15107/rcub_cer_6488"
}

Stefanović, I., Pergal, M., Vasiljević-Radović, D., Gođevac, D., Antić, V.,& Đonlagić, J.. (2012). Surface properties of polyurethane copolymers based on α,ω-dihydroxypropyl-poly(dimethylsiloxane). in Program i kratki izvodi radova - 50. jubilarno savetovanje Srpskog hemijskog društva, 14-15.06.2012, Beograd / Program and Book of abstracts - 50th Golden Jubilee Meeting of the Serbian Chemical Society, 14-15. June 2012, Belgrade
Belgrade : Serbian Chemical Society., 140-140.
https://hdl.handle.net/21.15107/rcub_cer_6488

Stefanović I, Pergal M, Vasiljević-Radović D, Gođevac D, Antić V, Đonlagić J. Surface properties of polyurethane copolymers based on α,ω-dihydroxypropyl-poly(dimethylsiloxane). in Program i kratki izvodi radova - 50. jubilarno savetovanje Srpskog hemijskog društva, 14-15.06.2012, Beograd / Program and Book of abstracts - 50th Golden Jubilee Meeting of the Serbian Chemical Society, 14-15. June 2012, Belgrade. 2012;:140-140.
https://hdl.handle.net/21.15107/rcub_cer_6488 .

Stefanović, Ivan, Pergal, Marija, Vasiljević-Radović, Dana, Gođevac, Dejan, Antić, Vesna, Đonlagić, Jasna, "Surface properties of polyurethane copolymers based on α,ω-dihydroxypropyl-poly(dimethylsiloxane)" in Program i kratki izvodi radova - 50. jubilarno savetovanje Srpskog hemijskog društva, 14-15.06.2012, Beograd / Program and Book of abstracts - 50th Golden Jubilee Meeting of the Serbian Chemical Society, 14-15. June 2012, Belgrade (2012):140-140,
https://hdl.handle.net/21.15107/rcub_cer_6488 .

TY  - CONF
AU  - Pergal, Marija
AU  - Stefanović, Ivan
AU  - Antić, Vesna
AU  - Đonlagić, Jasna
PY  - 2011
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6487
AB  - Segmented polyurethanes are an important class of thermoplastic elastomers that are used in medicine as long-term implants. Biostability and biocompatibility of polyurethanes can be improved by the introduction of poly(dimethylsiloxane) in the polymer chain. A series of novel thermoplastic polyurethanes (TPUs) was synthesized by two-step polyaddition reaction in solution from 4,4'-methylenediphenyl diisocyanate (MDI), 1,4-butanediol (BD) and alpha-omega-dihydroxypropyl-poly(dimethylsiloxane) (PDMS). The content of soft PDMS segment was varied between 34 and 62 wt.%. The structure and composition of the TPUs were determined by 1H and 13C NMR spectroscopy, while the hydrogen bonding interaction in the TPUs were analyzed by FTIR spectroscopy. The influence of PDMS content on the structure, thermal and some physical properties of the TPUs were also investigated. Thermal stability of the copolymers increased with increasing PDMS content. It was clearly demonstrated that the degree of crystallinity, the melting and crystallization temperatures as well as glass transition temperatures increased with increasing weight fraction of the hard MDI-BD segment. SEM analysis confirmed the presence of a fibrillar morphology, which arises from the crystallization of the MDI-BD segments.
AB  - Segmentirani poliuretani predstavljaju važnu klasu termoplastičnih elastomera koji su našli primenu u medicini za izradu dugotrajnih implanata. Jedan od načina da se poboljša biostabilnost i biokompatibilnost termoplastičnih poliuretana je uvodenje poli(dimetilsiloksana) u polimemi lanac. Serija novih termoplastičnih poliuretana (TPUs) sintetisana je dvostepenom poliadicijom u rastvoru polazeći od 4,4'-metilendifenildiizocijanata (MDI), 1,4-butandiola (BD) i alpha-omega-dihidroksipropil-poli(dimetilsiloksana) (PDMS). Sadržaj mekih PDMS segmenata je variran od 34 do 62 mas%. Struktura i sastav kopolimera odredeni su 1H i 13C NMR spektroskopijom, dok su vrste vodoničnih interakcija u TPUs analizirane FTIR spektroskopijom. Uticaj sadržaja mekog PDMS segmenta na strukturu, termička i neka fizička svojstava kopolimera, su takode ispitani. Termička stabilnost kopolimera se povećavala sa povećanjem sadržaja PDMS-a. Pokazano je da stepen kristaliničnosti, a samim tim i temperature topljenja i kristalizacije, kao i temperatura ostalcliivanja TPUs rastu sa povećanjem masenog udela tvrdih MDI-BD segmanata. SEM analiza je pokazala da sintetisani kopolimeri imaju fibrilarnu morfologiju, koja potiče od kristalizacije MDI-BD segmenata.
PB  - Belgrade : Serbian Chemical Society
C3  - Program i kratki izvodi radova -  XLIX Savetovanje Srpskog hemijskog društva, 13-14. maj 2011., Kragujevac / Programme and book of abstracts - 49th Meeting of the Serbian Chemical Society, 13-14. May 2011. Kragujevac
T1  - The influence of poly(dimethylsiloxane) content on some physical properties of thermoplastic polyurethanes
T1  - Uticaj sadržaja poli(dimetiloksana) na neka fizička svojstva termoplastičnih poliuretana
SP  - 116
EP  - 116
UR  - https://hdl.handle.net/21.15107/rcub_cer_6487
ER  - 

@conference{
author = "Pergal, Marija and Stefanović, Ivan and Antić, Vesna and Đonlagić, Jasna",
year = "2011",
abstract = "Segmented polyurethanes are an important class of thermoplastic elastomers that are used in medicine as long-term implants. Biostability and biocompatibility of polyurethanes can be improved by the introduction of poly(dimethylsiloxane) in the polymer chain. A series of novel thermoplastic polyurethanes (TPUs) was synthesized by two-step polyaddition reaction in solution from 4,4'-methylenediphenyl diisocyanate (MDI), 1,4-butanediol (BD) and alpha-omega-dihydroxypropyl-poly(dimethylsiloxane) (PDMS). The content of soft PDMS segment was varied between 34 and 62 wt.%. The structure and composition of the TPUs were determined by 1H and 13C NMR spectroscopy, while the hydrogen bonding interaction in the TPUs were analyzed by FTIR spectroscopy. The influence of PDMS content on the structure, thermal and some physical properties of the TPUs were also investigated. Thermal stability of the copolymers increased with increasing PDMS content. It was clearly demonstrated that the degree of crystallinity, the melting and crystallization temperatures as well as glass transition temperatures increased with increasing weight fraction of the hard MDI-BD segment. SEM analysis confirmed the presence of a fibrillar morphology, which arises from the crystallization of the MDI-BD segments., Segmentirani poliuretani predstavljaju važnu klasu termoplastičnih elastomera koji su našli primenu u medicini za izradu dugotrajnih implanata. Jedan od načina da se poboljša biostabilnost i biokompatibilnost termoplastičnih poliuretana je uvodenje poli(dimetilsiloksana) u polimemi lanac. Serija novih termoplastičnih poliuretana (TPUs) sintetisana je dvostepenom poliadicijom u rastvoru polazeći od 4,4'-metilendifenildiizocijanata (MDI), 1,4-butandiola (BD) i alpha-omega-dihidroksipropil-poli(dimetilsiloksana) (PDMS). Sadržaj mekih PDMS segmenata je variran od 34 do 62 mas%. Struktura i sastav kopolimera odredeni su 1H i 13C NMR spektroskopijom, dok su vrste vodoničnih interakcija u TPUs analizirane FTIR spektroskopijom. Uticaj sadržaja mekog PDMS segmenta na strukturu, termička i neka fizička svojstava kopolimera, su takode ispitani. Termička stabilnost kopolimera se povećavala sa povećanjem sadržaja PDMS-a. Pokazano je da stepen kristaliničnosti, a samim tim i temperature topljenja i kristalizacije, kao i temperatura ostalcliivanja TPUs rastu sa povećanjem masenog udela tvrdih MDI-BD segmanata. SEM analiza je pokazala da sintetisani kopolimeri imaju fibrilarnu morfologiju, koja potiče od kristalizacije MDI-BD segmenata.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Program i kratki izvodi radova -  XLIX Savetovanje Srpskog hemijskog društva, 13-14. maj 2011., Kragujevac / Programme and book of abstracts - 49th Meeting of the Serbian Chemical Society, 13-14. May 2011. Kragujevac",
title = "The influence of poly(dimethylsiloxane) content on some physical properties of thermoplastic polyurethanes, Uticaj sadržaja poli(dimetiloksana) na neka fizička svojstva termoplastičnih poliuretana",
pages = "116-116",
url = "https://hdl.handle.net/21.15107/rcub_cer_6487"
}

Pergal, M., Stefanović, I., Antić, V.,& Đonlagić, J.. (2011). The influence of poly(dimethylsiloxane) content on some physical properties of thermoplastic polyurethanes. in Program i kratki izvodi radova -  XLIX Savetovanje Srpskog hemijskog društva, 13-14. maj 2011., Kragujevac / Programme and book of abstracts - 49th Meeting of the Serbian Chemical Society, 13-14. May 2011. Kragujevac
Belgrade : Serbian Chemical Society., 116-116.
https://hdl.handle.net/21.15107/rcub_cer_6487

Pergal M, Stefanović I, Antić V, Đonlagić J. The influence of poly(dimethylsiloxane) content on some physical properties of thermoplastic polyurethanes. in Program i kratki izvodi radova -  XLIX Savetovanje Srpskog hemijskog društva, 13-14. maj 2011., Kragujevac / Programme and book of abstracts - 49th Meeting of the Serbian Chemical Society, 13-14. May 2011. Kragujevac. 2011;:116-116.
https://hdl.handle.net/21.15107/rcub_cer_6487 .

Pergal, Marija, Stefanović, Ivan, Antić, Vesna, Đonlagić, Jasna, "The influence of poly(dimethylsiloxane) content on some physical properties of thermoplastic polyurethanes" in Program i kratki izvodi radova -  XLIX Savetovanje Srpskog hemijskog društva, 13-14. maj 2011., Kragujevac / Programme and book of abstracts - 49th Meeting of the Serbian Chemical Society, 13-14. May 2011. Kragujevac (2011):116-116,
https://hdl.handle.net/21.15107/rcub_cer_6487 .