Mechanical properties and particle size of the waterborne polyurethanes
Abstract
In this study, six waterborne polyurethanes (WBPUs) were synthesized based on α,ω-
dihydroxypropyl poly(dimethylsiloxane) (PDMS), isophorone diisocyanate (IPDI), 2,2-
bis-(hydroxymethyl) propionic acid (DMPA) and triethylamine (TEA). WBPUs were
prepared without a chain extension step and with various DMPA/PDMS molar ratios
(from 0.2 to 0.7). The mechanical features, particle size and particle size distribution, as
well as molecular weights of WBPUs were investigated by diverse experimental
techniques.
Tensile strength values were in the range from 4.03 to 6.33 MPa, and generally decrease
with decreasing PDMS content in WBPUs. This occurs due to the presence of lower
degree of microphase separation in WBPUs with lower PDMS content. On the other
hand, the incorporation of flexible PDMS led to an increase of elongation at break values
(from 0.4 to 58.6%) in WBPUs. The particle size of the prepared WBPU dispersions and
molecular weight of WBPU films decrease with increasing DMP...A content. Particle sizes
of these WBPU dispersions are in the range from 91.4 to 232.3 nm, while the weight
average molecular weights (Mw) are in the range from 11900 to 15300 g/mol [1].
Prepared WBPUs are polymer materials with good mechanical features and suitable
particle sizes, which enable them to be used as coatings for different purposes.
Keywords:
waterborne polyurethanes / mechanical features / particle size / particle size distributionSource:
Book of Abstracts - 8th Conference of the Young Chemists of Serbia, , 29th October 2022University of Belgrade, Faculty of Chemistry,, 2022, 64-64Publisher:
- Belgrade : Serbian Chemical Society
- Belgrade : Serbian Young Chemists’ Club
Funding / projects:
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200026 (University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM) (RS-MESTD-inst-2020-200026)
Collections
Institution/Community
IHTMTY - CONF AU - Stefanović, Ivan AU - Džunuzović, Jasna AU - Džunuzović, Enis AU - Marega, Carla PY - 2022 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/6201 AB - In this study, six waterborne polyurethanes (WBPUs) were synthesized based on α,ω- dihydroxypropyl poly(dimethylsiloxane) (PDMS), isophorone diisocyanate (IPDI), 2,2- bis-(hydroxymethyl) propionic acid (DMPA) and triethylamine (TEA). WBPUs were prepared without a chain extension step and with various DMPA/PDMS molar ratios (from 0.2 to 0.7). The mechanical features, particle size and particle size distribution, as well as molecular weights of WBPUs were investigated by diverse experimental techniques. Tensile strength values were in the range from 4.03 to 6.33 MPa, and generally decrease with decreasing PDMS content in WBPUs. This occurs due to the presence of lower degree of microphase separation in WBPUs with lower PDMS content. On the other hand, the incorporation of flexible PDMS led to an increase of elongation at break values (from 0.4 to 58.6%) in WBPUs. The particle size of the prepared WBPU dispersions and molecular weight of WBPU films decrease with increasing DMPA content. Particle sizes of these WBPU dispersions are in the range from 91.4 to 232.3 nm, while the weight average molecular weights (Mw) are in the range from 11900 to 15300 g/mol [1]. Prepared WBPUs are polymer materials with good mechanical features and suitable particle sizes, which enable them to be used as coatings for different purposes. PB - Belgrade : Serbian Chemical Society PB - Belgrade : Serbian Young Chemists’ Club C3 - Book of Abstracts - 8th Conference of the Young Chemists of Serbia, , 29th October 2022University of Belgrade, Faculty of Chemistry, T1 - Mechanical properties and particle size of the waterborne polyurethanes SP - 64 EP - 64 UR - https://hdl.handle.net/21.15107/rcub_cer_6201 ER -
@conference{ author = "Stefanović, Ivan and Džunuzović, Jasna and Džunuzović, Enis and Marega, Carla", year = "2022", abstract = "In this study, six waterborne polyurethanes (WBPUs) were synthesized based on α,ω- dihydroxypropyl poly(dimethylsiloxane) (PDMS), isophorone diisocyanate (IPDI), 2,2- bis-(hydroxymethyl) propionic acid (DMPA) and triethylamine (TEA). WBPUs were prepared without a chain extension step and with various DMPA/PDMS molar ratios (from 0.2 to 0.7). The mechanical features, particle size and particle size distribution, as well as molecular weights of WBPUs were investigated by diverse experimental techniques. Tensile strength values were in the range from 4.03 to 6.33 MPa, and generally decrease with decreasing PDMS content in WBPUs. This occurs due to the presence of lower degree of microphase separation in WBPUs with lower PDMS content. On the other hand, the incorporation of flexible PDMS led to an increase of elongation at break values (from 0.4 to 58.6%) in WBPUs. The particle size of the prepared WBPU dispersions and molecular weight of WBPU films decrease with increasing DMPA content. Particle sizes of these WBPU dispersions are in the range from 91.4 to 232.3 nm, while the weight average molecular weights (Mw) are in the range from 11900 to 15300 g/mol [1]. Prepared WBPUs are polymer materials with good mechanical features and suitable particle sizes, which enable them to be used as coatings for different purposes.", publisher = "Belgrade : Serbian Chemical Society, Belgrade : Serbian Young Chemists’ Club", journal = "Book of Abstracts - 8th Conference of the Young Chemists of Serbia, , 29th October 2022University of Belgrade, Faculty of Chemistry,", title = "Mechanical properties and particle size of the waterborne polyurethanes", pages = "64-64", url = "https://hdl.handle.net/21.15107/rcub_cer_6201" }
Stefanović, I., Džunuzović, J., Džunuzović, E.,& Marega, C.. (2022). Mechanical properties and particle size of the waterborne polyurethanes. in Book of Abstracts - 8th Conference of the Young Chemists of Serbia, , 29th October 2022University of Belgrade, Faculty of Chemistry, Belgrade : Serbian Chemical Society., 64-64. https://hdl.handle.net/21.15107/rcub_cer_6201
Stefanović I, Džunuzović J, Džunuzović E, Marega C. Mechanical properties and particle size of the waterborne polyurethanes. in Book of Abstracts - 8th Conference of the Young Chemists of Serbia, , 29th October 2022University of Belgrade, Faculty of Chemistry,. 2022;:64-64. https://hdl.handle.net/21.15107/rcub_cer_6201 .
Stefanović, Ivan, Džunuzović, Jasna, Džunuzović, Enis, Marega, Carla, "Mechanical properties and particle size of the waterborne polyurethanes" in Book of Abstracts - 8th Conference of the Young Chemists of Serbia, , 29th October 2022University of Belgrade, Faculty of Chemistry, (2022):64-64, https://hdl.handle.net/21.15107/rcub_cer_6201 .