期刊
POLYMER DEGRADATION AND STABILITY
卷 150, 期 -, 页码 122-132出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2018.02.014
关键词
Bio-based polyurethane; Castor oil; Hyperbranched; Mechanical properties; Eco-friendly
A series of hyperbranched polyesters were incorporated by the chemical reaction of the dimethylolpropionic acid with trimethylolpropane, pentaerythritol, and glycerol as the core group. The castor oil-based fatty acids were also successfully prepared in order to examine the impact of the biopolyols on the thermo-mechanical characteristics of the hyperbranched waterborne polyurethane. The chemical structure of the polyols and the resulting polymer were characterized. Developing - OH functionality of the polyols the polyurethanes represented an improvement in crosslinking density, leading to increasing T- g, tensile modulus, and tensile strength and a decrease in elongation and toughness. Thus, the overall results forward the synthesized HBWPU as a potent sustainable and eco-friendly polymeric material by a simple approach that possesses a higher degree of sustainability over a purely petrochemical route.
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