Sinteza alifatskih hiperrazgranatih poliestara: "pseudo one-step" procedura“
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Hiperrazgranati polimeri (HBP) i dendrimeri pripadaju klasi dendritskih makromolekula. Za razliku od složene i dugotrajne sinteze dendrimera, HBP se mogu sintetisati korišćenjem jednostavne "one-step" procedure, pri čemu nastaju polidisperzni HBP, manje savršene molekulske strukture, ali čija su fizička i hemijska svojstva vrlo slična svojstvima monodisperznih dendrimera.
U ovom radu su sintetisani alifatski hiperrazgranati poliestri (AHBP) druge, treće i četvrte pseudo generacije kiselo katalizovanom reakcijom poliesterifikacije i primenom "pseudo one-step" procedure, polazeći od 2,2-bis(hidroksimetil)propionske kiseline (bis-MPA), kao AB2 monomera i di-trimetilolpropana (DiTMP), kao B4 jezgra. Primenom različitih karakterizacionih tehnika (NMR, osmometrija napona pare, GPC, dinamičko rasipanje svetlosti, MALDI-TOF i ESI masena spektrometrija) određene su osnovne karakteristike ovih polimera i ispitano je prisustvo produkata sporednih reakcija.
Hyperbranched polymers (HBP) and dendrimers belong to the class of dendritic macromolecules. In comparison to the complex and long synthesis of dendrimers, HBP can be synthesized using simple "one-step" procedure, whereby polydisperse HBP with less perfect molecular structure are obtained, but with similar physical and chemical properties to those of monodisperse dendrimers.
In this study, aliphatic hyperbranched polyesters (AHBP) of second, third and fourth pseudo generation were synthesized by acid-catalyzed polyesterification reaction and using "pseudo one-step" procedure, starting from 2,2-bis(hydroxymethyl)propionic acid (bis-MPA) as an AB2 monomer and di-trimethylolpropane (DiTMP) as the tetrafunctional B4 core molecule. The main characteristics of these polymers and presence of the side reaction products were investigated using different characterization techniques (NMR, vapour pressure osmometry, GPC, dynamic light scattering, MALDI-TOF and ESI mass spectrometry).
Keywords:
Alifatski hiperrazgranati poliestri / NMR / Osmometrija napona pare / GPC / Dinamičko rasipanje svetlosti / MALDI-TOF MS / ESI MSSource:
Program i kratki izvodi radova - XLVI savetovanje Srpskog hemijskog društva, 21. februar 2008, Beograd / Programme and Book of Abstracts - 46th Meeting of the Serbian Chemical Society, February 21, 2008, Belgrade, Serbia, 2008, 112-112Publisher:
- Belgrade : Serbian Chemical Society
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IHTMTY - CONF AU - Vuković, Jasna AU - Jovanović, S. AU - Lechner, M. D. PY - 2008 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/6989 AB - Hiperrazgranati polimeri (HBP) i dendrimeri pripadaju klasi dendritskih makromolekula. Za razliku od složene i dugotrajne sinteze dendrimera, HBP se mogu sintetisati korišćenjem jednostavne "one-step" procedure, pri čemu nastaju polidisperzni HBP, manje savršene molekulske strukture, ali čija su fizička i hemijska svojstva vrlo slična svojstvima monodisperznih dendrimera. U ovom radu su sintetisani alifatski hiperrazgranati poliestri (AHBP) druge, treće i četvrte pseudo generacije kiselo katalizovanom reakcijom poliesterifikacije i primenom "pseudo one-step" procedure, polazeći od 2,2-bis(hidroksimetil)propionske kiseline (bis-MPA), kao AB2 monomera i di-trimetilolpropana (DiTMP), kao B4 jezgra. Primenom različitih karakterizacionih tehnika (NMR, osmometrija napona pare, GPC, dinamičko rasipanje svetlosti, MALDI-TOF i ESI masena spektrometrija) određene su osnovne karakteristike ovih polimera i ispitano je prisustvo produkata sporednih reakcija. AB - Hyperbranched polymers (HBP) and dendrimers belong to the class of dendritic macromolecules. In comparison to the complex and long synthesis of dendrimers, HBP can be synthesized using simple "one-step" procedure, whereby polydisperse HBP with less perfect molecular structure are obtained, but with similar physical and chemical properties to those of monodisperse dendrimers. In this study, aliphatic hyperbranched polyesters (AHBP) of second, third and fourth pseudo generation were synthesized by acid-catalyzed polyesterification reaction and using "pseudo one-step" procedure, starting from 2,2-bis(hydroxymethyl)propionic acid (bis-MPA) as an AB2 monomer and di-trimethylolpropane (DiTMP) as the tetrafunctional B4 core molecule. The main characteristics of these polymers and presence of the side reaction products were investigated using different characterization techniques (NMR, vapour pressure osmometry, GPC, dynamic light scattering, MALDI-TOF and ESI mass spectrometry). PB - Belgrade : Serbian Chemical Society C3 - Program i kratki izvodi radova - XLVI savetovanje Srpskog hemijskog društva, 21. februar 2008, Beograd / Programme and Book of Abstracts - 46th Meeting of the Serbian Chemical Society, February 21, 2008, Belgrade, Serbia T1 - Sinteza alifatskih hiperrazgranatih poliestara: "pseudo one-step" procedura“ SP - 112 EP - 112 UR - https://hdl.handle.net/21.15107/rcub_cer_6989 ER -
@conference{ author = "Vuković, Jasna and Jovanović, S. and Lechner, M. D.", year = "2008", abstract = "Hiperrazgranati polimeri (HBP) i dendrimeri pripadaju klasi dendritskih makromolekula. Za razliku od složene i dugotrajne sinteze dendrimera, HBP se mogu sintetisati korišćenjem jednostavne "one-step" procedure, pri čemu nastaju polidisperzni HBP, manje savršene molekulske strukture, ali čija su fizička i hemijska svojstva vrlo slična svojstvima monodisperznih dendrimera. U ovom radu su sintetisani alifatski hiperrazgranati poliestri (AHBP) druge, treće i četvrte pseudo generacije kiselo katalizovanom reakcijom poliesterifikacije i primenom "pseudo one-step" procedure, polazeći od 2,2-bis(hidroksimetil)propionske kiseline (bis-MPA), kao AB2 monomera i di-trimetilolpropana (DiTMP), kao B4 jezgra. Primenom različitih karakterizacionih tehnika (NMR, osmometrija napona pare, GPC, dinamičko rasipanje svetlosti, MALDI-TOF i ESI masena spektrometrija) određene su osnovne karakteristike ovih polimera i ispitano je prisustvo produkata sporednih reakcija., Hyperbranched polymers (HBP) and dendrimers belong to the class of dendritic macromolecules. In comparison to the complex and long synthesis of dendrimers, HBP can be synthesized using simple "one-step" procedure, whereby polydisperse HBP with less perfect molecular structure are obtained, but with similar physical and chemical properties to those of monodisperse dendrimers. In this study, aliphatic hyperbranched polyesters (AHBP) of second, third and fourth pseudo generation were synthesized by acid-catalyzed polyesterification reaction and using "pseudo one-step" procedure, starting from 2,2-bis(hydroxymethyl)propionic acid (bis-MPA) as an AB2 monomer and di-trimethylolpropane (DiTMP) as the tetrafunctional B4 core molecule. The main characteristics of these polymers and presence of the side reaction products were investigated using different characterization techniques (NMR, vapour pressure osmometry, GPC, dynamic light scattering, MALDI-TOF and ESI mass spectrometry).", publisher = "Belgrade : Serbian Chemical Society", journal = "Program i kratki izvodi radova - XLVI savetovanje Srpskog hemijskog društva, 21. februar 2008, Beograd / Programme and Book of Abstracts - 46th Meeting of the Serbian Chemical Society, February 21, 2008, Belgrade, Serbia", title = "Sinteza alifatskih hiperrazgranatih poliestara: "pseudo one-step" procedura“", pages = "112-112", url = "https://hdl.handle.net/21.15107/rcub_cer_6989" }
Vuković, J., Jovanović, S.,& Lechner, M. D.. (2008). Sinteza alifatskih hiperrazgranatih poliestara: "pseudo one-step" procedura“. in Program i kratki izvodi radova - XLVI savetovanje Srpskog hemijskog društva, 21. februar 2008, Beograd / Programme and Book of Abstracts - 46th Meeting of the Serbian Chemical Society, February 21, 2008, Belgrade, Serbia Belgrade : Serbian Chemical Society., 112-112. https://hdl.handle.net/21.15107/rcub_cer_6989
Vuković J, Jovanović S, Lechner MD. Sinteza alifatskih hiperrazgranatih poliestara: "pseudo one-step" procedura“. in Program i kratki izvodi radova - XLVI savetovanje Srpskog hemijskog društva, 21. februar 2008, Beograd / Programme and Book of Abstracts - 46th Meeting of the Serbian Chemical Society, February 21, 2008, Belgrade, Serbia. 2008;:112-112. https://hdl.handle.net/21.15107/rcub_cer_6989 .
Vuković, Jasna, Jovanović, S., Lechner, M. D., "Sinteza alifatskih hiperrazgranatih poliestara: "pseudo one-step" procedura“" in Program i kratki izvodi radova - XLVI savetovanje Srpskog hemijskog društva, 21. februar 2008, Beograd / Programme and Book of Abstracts - 46th Meeting of the Serbian Chemical Society, February 21, 2008, Belgrade, Serbia (2008):112-112, https://hdl.handle.net/21.15107/rcub_cer_6989 .