2008
DOI: 10.1021/bm801030g
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Soybean-Oil-Based Waterborne Polyurethane Dispersions: Effects of Polyol Functionality and Hard Segment Content on Properties

Abstract: The environmentally friendly vegetable-oil-based waterborne polyurethane dispersions with very promising properties have been successfully synthesized without difficulty from a series of methoxylated soybean oil polyols (MSOLs) with different hydroxyl functionalities ranging from 2.4 to as high as 4.0. The resulting soybean-oil-based waterborne polyurethane (SPU) dispersions exhibit a uniform particle size, which increases from about 12 to 130 nm diameter with an increase in the OH functionality of the MSOL fr… Show more

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Cited by 352 publications
(308 citation statements)
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“…However, in the scope of this paper a full detailed investigation is not feasible. Similar mechanical properties were also observed by Lu et al but in polyurethane films derived from methoxylated soybean oil polyols with different hydroxyl functionalities [22].…”
Section: Dsc Analysissupporting
confidence: 84%
“…However, in the scope of this paper a full detailed investigation is not feasible. Similar mechanical properties were also observed by Lu et al but in polyurethane films derived from methoxylated soybean oil polyols with different hydroxyl functionalities [22].…”
Section: Dsc Analysissupporting
confidence: 84%
“…Depending on the type of decomposition mechanism, the resulting degradation products may include alcohols, amines, olefins, carbon dioxide, and fatty acid chain scission. [25][26][27][28] The temperature at the maximum degradation rate of the alkali lignin is 267°C, while the temperature of the maximum degradation rate of QLD is 300°C. Comparing alkali lignin with QLD shows that the thermostability of QLD prevailed over alkali lignin.…”
Section: X-ray Diffraction Spectroscopy Analysismentioning
confidence: 99%
“…Hydrogen bonding is a very important feature in polyurethanes and has significant effect on the material properties. FT-IR spectroscopy as an effective tool has been used to investigate the hydrogen bonding of polyurethanes [19]. In sample WPU, the C=O stretching vibration peak appeared at 1718 cm −1 and the N-H stretching vibration peak at 3322 cm −1 , while in sample WPU-CP5, the C=O stretching vibration peak appeared at 1719 cm and the N-H stretching vibration peak at 3325 cm −1 , both peaks shifting to higher wavenumbers, which indicate that less hydrogen bonds have been formed for sample WPU-CP5 than for sample WPU.…”
Section: Characterization By Ft-irmentioning
confidence: 99%
“…data are summarized in Table 2. Generally, polyurethanes exhibit relatively low thermal stability because of the presence of labile urethane groups and the degradation mechanism is very complex due to the variety of products formed in the process [19]. The onset of urethane bond dissociation is somewhere <300 ∘ C, depending upon the type of isocyanate and polyol employed.…”
Section: Solvent and Water Resistance Properties Of The Wpu Filmsmentioning
confidence: 99%
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