1. Synthesis and properties of epoxy soybean oil-based polyurethanes modified by 3,13-dimethyhydroxysilyl double-decker phenylsilsesquioxane
- Author
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Lipeng Zhang, Jian Xu, Zhiliang Cao, Phyu Thin Wai, Pingbo Zhang, Pingping Jiang, Agus Haryono, Yue Wen, and Daobin Li
- Subjects
Materials science ,food.ingredient ,General Chemical Engineering ,02 engineering and technology ,010402 general chemistry ,01 natural sciences ,Biochemistry ,Industrial and Manufacturing Engineering ,Soybean oil ,Contact angle ,chemistry.chemical_compound ,food ,Polyol ,Materials Chemistry ,Thermal stability ,Polyurethane ,chemistry.chemical_classification ,General Chemistry ,Epoxy ,Polymer ,021001 nanoscience & nanotechnology ,0104 chemical sciences ,chemistry ,Chemical engineering ,visual_art ,visual_art.visual_art_medium ,0210 nano-technology ,Glass transition - Abstract
Nowadays, environmental problems such as petroleum resources exhaustion, pollution and global warming are in ceaseless aggravation. Consequently, vegetable oil becomes one of the most important resources due to its cheapness, easily availability and environmental regeneration. In this study, a series of sustainable polyurethanes based on epoxy soybean oil modified by different contents of 3,13-dimethyhydroxysilyl double-decker phenylsilsesquioxane [DDSQ(Me)OH] have been prepared. Polyol prepared with epoxy soybean oil has effectively replaced the petroleum-based polyol and the DDSQ(Me)OH performed as chain extender together with 1,4-butanediol (BDO). The structure of DDSQ(Me)OH was verified by 1H NMR and MALDI–TOF–MS. The structure and properties of sustainable polyurethanes were characterized by FTIR, DSC, TGA, SEM, tensile test and static contact angle. TGA demonstrated that hybrid polyurethanes were thermally stable due to the covalent incorporation of DDSQ(Me)OH in polymer main chain, the 5% weight loss temperatures (Td5) of hybrid polyurethane can be 21 °C higher than pure PU. DSC revealed the improved glass transition temperature (Tg) of polyurethanes, and the Tg can be 12.4 °C improved compared with pure polyurethane. SEM showed that the aggregation of DDSQ(Me)OH has dispersed homogeneously in the hybrid polyurethanes matrix. The results of the static contact angle revealed that with the increase of DDSQ(Me)OH content, the surface hydrophobicity has been enhanced significantly, and the static contact angle of water for hybrid polyurethanes can be up to about 110.2°.
- Published
- 2018