The effects of the structure and molecular weight of the macrodiol on the properties polyurethane anionic adhesives
Abstract
Polyurethane anionic adhesives were synthesized as waterborne polyurethane dispersions (PUDs) by modified dispersing procedure, using isophorone diisocyanate, dimethylol propionic acid, ethylenediamine as a chain extender and a range of soft segments with various macrodiols proportions. The soft segment was formed by replacing poly(propylene glycol) (PPG) as polyether polyol with polycarbonate diol (PCD), as polyester polyol. The effect of the macrodiols proportions of soft segment on the thermal properties of polyurethane films was measured by thermogravimetry analyses (TGA) and differential scanning calorimetry (DSC) methods. The infrared spectroscopy (FTIR) was used for evaluating the degree of phase separation. The results showed that phase separation between hard and soft segments of poly(ester-urethane) is more significant than of poly(ether-urethane). The phase separation degree of polyurethane dispersion significantly affected the glass transition temperature (T-g) and film pro...perties. While the phase separation degree increased, T-g proportionally decreased, but the hardness and gloss of the dried films increased, as expected. However, thermal stability was influenced by the molecular weight of used polyols and chemical structure of the polyols, and it was described by the effect of oxygen content, and interaction between the soft and hard segment, and the soft segment composition. The soft segment can be achieved with a proper selection, in order to fine-tune the performance of waterborne polyurethane dispersion, considering certain practical application. (C) 2012 Elsevier Ltd. All rights reserved.
Keywords:
Polyurethane / Water based / Infrared spectra / Thermal analysis / Phase separationSource:
International Journal of Adhesion and Adhesives, 2013, 41, 132-139Funding / projects:
- Materials of Reduced Dimensions for Efficient Light Harvesting and Energy conversion (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45020)
- Multiscale structuring of polymer nanocomposites and functional materials based on different precursors (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45022)
- Grant Agency of the Czech Republic (Czech Science Foundation) [P108/10/0195]
DOI: 10.1016/j.ijadhadh.2012.11.001
ISSN: 0143-7496
WoS: 000315547600017
Scopus: 2-s2.0-84870712301
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Institution/Community
VinčaTY - JOUR AU - Cakić, Suzana M. AU - Ristić, Ivan S. AU - Marinović-Cincović, Milena AU - Spirkova, Milena PY - 2013 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5343 AB - Polyurethane anionic adhesives were synthesized as waterborne polyurethane dispersions (PUDs) by modified dispersing procedure, using isophorone diisocyanate, dimethylol propionic acid, ethylenediamine as a chain extender and a range of soft segments with various macrodiols proportions. The soft segment was formed by replacing poly(propylene glycol) (PPG) as polyether polyol with polycarbonate diol (PCD), as polyester polyol. The effect of the macrodiols proportions of soft segment on the thermal properties of polyurethane films was measured by thermogravimetry analyses (TGA) and differential scanning calorimetry (DSC) methods. The infrared spectroscopy (FTIR) was used for evaluating the degree of phase separation. The results showed that phase separation between hard and soft segments of poly(ester-urethane) is more significant than of poly(ether-urethane). The phase separation degree of polyurethane dispersion significantly affected the glass transition temperature (T-g) and film properties. While the phase separation degree increased, T-g proportionally decreased, but the hardness and gloss of the dried films increased, as expected. However, thermal stability was influenced by the molecular weight of used polyols and chemical structure of the polyols, and it was described by the effect of oxygen content, and interaction between the soft and hard segment, and the soft segment composition. The soft segment can be achieved with a proper selection, in order to fine-tune the performance of waterborne polyurethane dispersion, considering certain practical application. (C) 2012 Elsevier Ltd. All rights reserved. T2 - International Journal of Adhesion and Adhesives T1 - The effects of the structure and molecular weight of the macrodiol on the properties polyurethane anionic adhesives VL - 41 SP - 132 EP - 139 DO - 10.1016/j.ijadhadh.2012.11.001 ER -
@article{ author = "Cakić, Suzana M. and Ristić, Ivan S. and Marinović-Cincović, Milena and Spirkova, Milena", year = "2013", abstract = "Polyurethane anionic adhesives were synthesized as waterborne polyurethane dispersions (PUDs) by modified dispersing procedure, using isophorone diisocyanate, dimethylol propionic acid, ethylenediamine as a chain extender and a range of soft segments with various macrodiols proportions. The soft segment was formed by replacing poly(propylene glycol) (PPG) as polyether polyol with polycarbonate diol (PCD), as polyester polyol. The effect of the macrodiols proportions of soft segment on the thermal properties of polyurethane films was measured by thermogravimetry analyses (TGA) and differential scanning calorimetry (DSC) methods. The infrared spectroscopy (FTIR) was used for evaluating the degree of phase separation. The results showed that phase separation between hard and soft segments of poly(ester-urethane) is more significant than of poly(ether-urethane). The phase separation degree of polyurethane dispersion significantly affected the glass transition temperature (T-g) and film properties. While the phase separation degree increased, T-g proportionally decreased, but the hardness and gloss of the dried films increased, as expected. However, thermal stability was influenced by the molecular weight of used polyols and chemical structure of the polyols, and it was described by the effect of oxygen content, and interaction between the soft and hard segment, and the soft segment composition. The soft segment can be achieved with a proper selection, in order to fine-tune the performance of waterborne polyurethane dispersion, considering certain practical application. (C) 2012 Elsevier Ltd. All rights reserved.", journal = "International Journal of Adhesion and Adhesives", title = "The effects of the structure and molecular weight of the macrodiol on the properties polyurethane anionic adhesives", volume = "41", pages = "132-139", doi = "10.1016/j.ijadhadh.2012.11.001" }
Cakić, S. M., Ristić, I. S., Marinović-Cincović, M.,& Spirkova, M.. (2013). The effects of the structure and molecular weight of the macrodiol on the properties polyurethane anionic adhesives. in International Journal of Adhesion and Adhesives, 41, 132-139. https://doi.org/10.1016/j.ijadhadh.2012.11.001
Cakić SM, Ristić IS, Marinović-Cincović M, Spirkova M. The effects of the structure and molecular weight of the macrodiol on the properties polyurethane anionic adhesives. in International Journal of Adhesion and Adhesives. 2013;41:132-139. doi:10.1016/j.ijadhadh.2012.11.001 .
Cakić, Suzana M., Ristić, Ivan S., Marinović-Cincović, Milena, Spirkova, Milena, "The effects of the structure and molecular weight of the macrodiol on the properties polyurethane anionic adhesives" in International Journal of Adhesion and Adhesives, 41 (2013):132-139, https://doi.org/10.1016/j.ijadhadh.2012.11.001 . .