TY  - JOUR
AU  - Cakić, Suzana M.
AU  - Ristić, Ivan S.
AU  - Marinović-Cincović, Milena
AU  - Nikolić, Nada Č.
AU  - Nikolić, Ljubiša B.
AU  - Cvetinov, Miroslav J.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1475
AB  - Novel biobased poly(ester-urethane)s (PUDs) were synthesized by solvent free homogeneous solution polymerization of poly(caprolactone) diol (PCL), castor oil-based polyols (COLs), dimethylolpropionic acid (DMPA), isophorone diisocyanate (IPDI) and 1,4-butane diol (BD) as the chain extender. The polyurethane dispersions were prepared by adding required amount of triethylamine (TEA) and water. In this Work, castor oil-based polyols have been synthesized using the depolymerized oligoester obtained from glycolysis of PET waste with poly(ethylene glycol) (PEG 400) and castor oil. The effects of the soft segments content on the thermal and coatings properties of resulting polyurethane films have been examined by Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and measurement of the coatings properties. Phase separation of polyurethane shows a strong correlation with crystallization behaviour of the polyurethane prepared. It is established that all PUD samples containing PCL as a part soft segment with different molar ratio of castor-oil polyol are crystallisable polymers. The results from XRD analysis have showed that highest degree of crystallinity (23 and 22%) is reached in polyurethanes based on the largest content PCL diol (CPU77 and CPU73). The thermal stability of samples based on (COL/PCL molar ratio 0.25:0.75) possesses the best thermal properties but less values hardness coatings which can be ascribed to a decrease of the hard segment i.e. DMPA content in polyurethane dispersions. The long-term stability of polyurethane dispersions has been investigated using UV vis spectroscopy. The physico-mechanical properties such as hardness adhesion test and gloss of the dried films have also been determined considering the effect of soft segment content on coating properties. (C) 2016 Elsevier B.V. All rights reserved.
T2  - Progress in Organic Coatings
T1  - Synthesis and properties biobased waterborne polyurethanes from glycolysis product of PET waste and poly(caprolactone) diol
VL  - 105
SP  - 111
EP  - 122
DO  - 10.1016/j.porgcoat.2016.10.038
ER  - 

@article{
author = "Cakić, Suzana M. and Ristić, Ivan S. and Marinović-Cincović, Milena and Nikolić, Nada Č. and Nikolić, Ljubiša B. and Cvetinov, Miroslav J.",
year = "2017",
abstract = "Novel biobased poly(ester-urethane)s (PUDs) were synthesized by solvent free homogeneous solution polymerization of poly(caprolactone) diol (PCL), castor oil-based polyols (COLs), dimethylolpropionic acid (DMPA), isophorone diisocyanate (IPDI) and 1,4-butane diol (BD) as the chain extender. The polyurethane dispersions were prepared by adding required amount of triethylamine (TEA) and water. In this Work, castor oil-based polyols have been synthesized using the depolymerized oligoester obtained from glycolysis of PET waste with poly(ethylene glycol) (PEG 400) and castor oil. The effects of the soft segments content on the thermal and coatings properties of resulting polyurethane films have been examined by Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and measurement of the coatings properties. Phase separation of polyurethane shows a strong correlation with crystallization behaviour of the polyurethane prepared. It is established that all PUD samples containing PCL as a part soft segment with different molar ratio of castor-oil polyol are crystallisable polymers. The results from XRD analysis have showed that highest degree of crystallinity (23 and 22%) is reached in polyurethanes based on the largest content PCL diol (CPU77 and CPU73). The thermal stability of samples based on (COL/PCL molar ratio 0.25:0.75) possesses the best thermal properties but less values hardness coatings which can be ascribed to a decrease of the hard segment i.e. DMPA content in polyurethane dispersions. The long-term stability of polyurethane dispersions has been investigated using UV vis spectroscopy. The physico-mechanical properties such as hardness adhesion test and gloss of the dried films have also been determined considering the effect of soft segment content on coating properties. (C) 2016 Elsevier B.V. All rights reserved.",
journal = "Progress in Organic Coatings",
title = "Synthesis and properties biobased waterborne polyurethanes from glycolysis product of PET waste and poly(caprolactone) diol",
volume = "105",
pages = "111-122",
doi = "10.1016/j.porgcoat.2016.10.038"
}

Cakić, S. M., Ristić, I. S., Marinović-Cincović, M., Nikolić, N. Č., Nikolić, L. B.,& Cvetinov, M. J.. (2017). Synthesis and properties biobased waterborne polyurethanes from glycolysis product of PET waste and poly(caprolactone) diol. in Progress in Organic Coatings, 105, 111-122.
https://doi.org/10.1016/j.porgcoat.2016.10.038

Cakić SM, Ristić IS, Marinović-Cincović M, Nikolić NČ, Nikolić LB, Cvetinov MJ. Synthesis and properties biobased waterborne polyurethanes from glycolysis product of PET waste and poly(caprolactone) diol. in Progress in Organic Coatings. 2017;105:111-122.
doi:10.1016/j.porgcoat.2016.10.038 .

Cakić, Suzana M., Ristić, Ivan S., Marinović-Cincović, Milena, Nikolić, Nada Č., Nikolić, Ljubiša B., Cvetinov, Miroslav J., "Synthesis and properties biobased waterborne polyurethanes from glycolysis product of PET waste and poly(caprolactone) diol" in Progress in Organic Coatings, 105 (2017):111-122,
https://doi.org/10.1016/j.porgcoat.2016.10.038 . .

TY  - JOUR
AU  - Cakić, Suzana M.
AU  - Ristić, Ivan S.
AU  - Marinović-Cincović, Milena
AU  - Nikolić, Nada Č.
AU  - Ilic, Olivera Z.
AU  - Stojiljković, Dragan T.
AU  - Budinski-Simendić, Jaroslava K.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4786
AB  - Soft drinks poly(ethylene terephthalate) (PET) bottles were depolymerized by glycolysis with different molar ratio of glycol, such as propylene glycol (PG), triethylene glycol (TEG) and poly(ethylene glycol) (PEG 400), in the presence of a zinc acetate catalyst. These glycolyzed products were characterized by hydroxyl value (HV) determinations. The obtained glycolyzed products were reacted with isophorone diisocyanate (IPDI), dimethylol propionic acid (DMPA), as potential ionic center for water dispersibility, and mixed with ethylene diamine (EDA) as extender chain to prepare polyurethane dispersions. The PET glycolyzed products and polyurethane formation were characterized using Fourier transform infrared spectroscopy (FTIR). The molecular masses distribution of oligoester polyol and polyurethane dispersions were determined by using gel permeation chromatography (G PC). The effect of different PET/glycol molar ratio, on the physico-mechanical properties, such as hardness, adhesion test and gloss of polyurethane films were investigated. Thermal properties were investigated by thermogravimetric analysis (TG) and differential scanning calorimetry (DSC). It was observed that initial degradation temperatures were at about 200 degrees C, with two-or three degradation steps. The influence of different molar ratio PET/glycol on DTG curves showed stages that were not noticeable in the appropriate weight loss curves. Polyurethane dispersions which lower molar ratio of PET/glycol in glycolyzed products showed lower thermal stability due to the presence of a greater amount of aromaticity in polyester backbone led to materials with higher film hardness. The values for the film adherence and gloss were confirmed their excellent properties for potential application for coatings in civil engineering, metal or polymer industry. (C) 2011 Elsevier B.V. All rights reserved.
T2  - Progress in Organic Coatings
T1  - Glycolyzed products from PET waste and their application in synthesis of polyurethane dispersions
VL  - 74
IS  - 1
SP  - 115
EP  - 124
DO  - 10.1016/j.porgcoat.2011.11.024
ER  - 

@article{
author = "Cakić, Suzana M. and Ristić, Ivan S. and Marinović-Cincović, Milena and Nikolić, Nada Č. and Ilic, Olivera Z. and Stojiljković, Dragan T. and Budinski-Simendić, Jaroslava K.",
year = "2012",
abstract = "Soft drinks poly(ethylene terephthalate) (PET) bottles were depolymerized by glycolysis with different molar ratio of glycol, such as propylene glycol (PG), triethylene glycol (TEG) and poly(ethylene glycol) (PEG 400), in the presence of a zinc acetate catalyst. These glycolyzed products were characterized by hydroxyl value (HV) determinations. The obtained glycolyzed products were reacted with isophorone diisocyanate (IPDI), dimethylol propionic acid (DMPA), as potential ionic center for water dispersibility, and mixed with ethylene diamine (EDA) as extender chain to prepare polyurethane dispersions. The PET glycolyzed products and polyurethane formation were characterized using Fourier transform infrared spectroscopy (FTIR). The molecular masses distribution of oligoester polyol and polyurethane dispersions were determined by using gel permeation chromatography (G PC). The effect of different PET/glycol molar ratio, on the physico-mechanical properties, such as hardness, adhesion test and gloss of polyurethane films were investigated. Thermal properties were investigated by thermogravimetric analysis (TG) and differential scanning calorimetry (DSC). It was observed that initial degradation temperatures were at about 200 degrees C, with two-or three degradation steps. The influence of different molar ratio PET/glycol on DTG curves showed stages that were not noticeable in the appropriate weight loss curves. Polyurethane dispersions which lower molar ratio of PET/glycol in glycolyzed products showed lower thermal stability due to the presence of a greater amount of aromaticity in polyester backbone led to materials with higher film hardness. The values for the film adherence and gloss were confirmed their excellent properties for potential application for coatings in civil engineering, metal or polymer industry. (C) 2011 Elsevier B.V. All rights reserved.",
journal = "Progress in Organic Coatings",
title = "Glycolyzed products from PET waste and their application in synthesis of polyurethane dispersions",
volume = "74",
number = "1",
pages = "115-124",
doi = "10.1016/j.porgcoat.2011.11.024"
}

Cakić, S. M., Ristić, I. S., Marinović-Cincović, M., Nikolić, N. Č., Ilic, O. Z., Stojiljković, D. T.,& Budinski-Simendić, J. K.. (2012). Glycolyzed products from PET waste and their application in synthesis of polyurethane dispersions. in Progress in Organic Coatings, 74(1), 115-124.
https://doi.org/10.1016/j.porgcoat.2011.11.024

Cakić SM, Ristić IS, Marinović-Cincović M, Nikolić NČ, Ilic OZ, Stojiljković DT, Budinski-Simendić JK. Glycolyzed products from PET waste and their application in synthesis of polyurethane dispersions. in Progress in Organic Coatings. 2012;74(1):115-124.
doi:10.1016/j.porgcoat.2011.11.024 .

Cakić, Suzana M., Ristić, Ivan S., Marinović-Cincović, Milena, Nikolić, Nada Č., Ilic, Olivera Z., Stojiljković, Dragan T., Budinski-Simendić, Jaroslava K., "Glycolyzed products from PET waste and their application in synthesis of polyurethane dispersions" in Progress in Organic Coatings, 74, no. 1 (2012):115-124,
https://doi.org/10.1016/j.porgcoat.2011.11.024 . .