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Cited by 377

The DOI matches its Crossref record; 37 of the 37 references it cites were found in a registry or an index.

Soybean-Oil-Based Waterborne Polyurethane Dispersions: Effects of Polyol Functionality and Hard Segment Content on Properties

Lu, Yongshang, Larock, Richard C.·2008·Biomacromolecules
DOI 10.1021/bm801030g
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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 from 2.4 to 4.0 and decreases with increasing content of the hard segments. The structure and thermophysical and mechanical properties of the resulting SPU films, which contain 50-60 wt % MSOL as renewable resources, have been studied by Fourier transform infrared spectroscopy, differential scanning calorimetry, dynamic mechanical analysis, thermogravimetric analysis, transmission electron microscopy, and mechanical testing. The experimental results reveal that the functionality of the MSOLs and the hard segment content play a key role in controlling the structure and the thermophysical and mechanical properties of the SPU films. These novel films exhibit tensile stress-strain behavior ranging from elastomeric polymers to rigid plastics and possess Young's moduli ranging from 8 to 720 MPa, ultimate tensile strengths ranging from 4.2 to 21.5 MPa, and percent elongation at break values ranging from 16 to 280%. This work has addressed concerns regarding gelation and higher cross-linking caused by the high functionality of vegetable-oil-based polyols. This article reports novel environmentally friendly biobased SPU materials with promising applications as decorative and protective coatings.

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Metadata

Authors
Lu, Y., & Larock, R. C.
Venue
Biomacromolecules
Publisher
American Chemical Society (ACS)
Published
2008-10-21
Volume
9
Issue
11
Pages
3332-3340
ISSN
  • 1525-7797 (ISSN-L)
  • 1526-4602
DOI
10.1021/bm801030g
OpenAlex
W1968229643
Cited by
377
References
37
FWCI
10.93
Type
journal article
Language
en
Open access
closed

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