N S Nurdin and Sariah Saalah and A T Lim and A Y Francis and L Abdullah and S SaifulAzry (2020) Effect of DMPA Content on Colloidal Stability of Jatropha Oil-based waterborne Polyurethane Dispersion. IOP Conf. Series: Materials Science and Engineering, 778. pp. 1-9.
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Effect of DMPA Content on Colloidal Stability of Jatropha Oil-based waterborne Polyurethane Dispersion1.pdf Download (561kB) | Preview |
Abstract
Driven by the increase of oil price in the market as well as environmental concerns by the society, a renewable raw material such as vegetable oil becomes the alternative to produce bio-based polyol to replace non-renewable polyols in polyurethane production. The recent development of aqueous polyurethane dispersion proves that environmentally waterborne PUD offers an efficient alternative to the solvent-borne PUD for the application in ink, adhesives, and coatings. In this study, the jatropha oil has been successfully functionalized to polyol (JOL) by epoxidation and oxirane ring opening steps. Jatropha oil-based waterborne polyurethane (JPU) dispersions were produced by polymerizing the JOL with isophorone diisocyanate (IPDI) and dimethylolpropionic acid (DMPA). The colloidal stability of JPU dispersions was studied in terms of particle size and zeta potential. Varying DMPA content from 5.0-7.0 wt.% resulted in small average particle size of dispersion from 39.40 nm to 133.2 nm. High zeta potential obtained in a range of -52 mV to -65 mV indicates the particles in the dispersion are sufficiently separated and therefore stable. Eventually, the study provides an overview of vegetable oil-based waterborne polyurethane dispersion with good stability for surface coating application.
| Item Type: | Article |
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| Keyword: | DMPA Content, Colloidal Stability, Jatropha Oil-based |
| Subjects: | T Technology > T Technology (General) T Technology > TA Engineering (General). Civil engineering (General) |
| Department: | FACULTY > Faculty of Engineering |
| Depositing User: | SITI AZIZAH BINTI IDRIS - |
| Date Deposited: | 27 Nov 2020 14:20 |
| Last Modified: | 27 Nov 2020 14:20 |
| URI: | https://eprints.ums.edu.my/id/eprint/26385 |
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