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Production and characterization of polyurethane foams from a simple mixture of castor oil, crude glycerol and untreated lignin as bio-based polyols
(Universidade Federal de Minas GeraisBrasilICX - DEPARTAMENTO DE QUÍMICAUFMG, 2016-12)
Polyurethane elastomers-based modified castor oil and poly( -caprolactone) for surface-coating applications: Synthesis, characterization, and in vitro degradation
(Journal of Elastomers and Plastics, 2014)
Polyurethanes (Pus) were synthesized from castor oil and modified through transesterification by pentaerythritol, poly(ε-caprolactone)diol (PCL), and isophorone diisocyanate to form PU coatings. The ratio of NCO/OH groups ...
Synthesis and characterization of a waterborne polyurethane made from castor oil and tartaric acid
(Pergamon-Elsevier Science Ltd, 2018-05)
Waterborne polyurethanes (WBPUs) based on the reaction of unmodified castor oil (CO) with isophorone diisocyanate (IPDI) were synthesized using dimethylolpropionic acid (DMPA) or tartaric acid (TA) as internal emulsifiers. ...
Sustainable hot-melt adhesives based on soybean protein isolate and polycaprolactone
(Elsevier Science, 2019-09)
The combination of synthetic biodegradable thermoplastic with natural vegetable proteins is an alternative poorly explored that might have advantages mostly in reducing the final environmental impact and cost of the adhesive. ...
Bio-based waterborne polyurethanes reinforced with cellulose nanocrystals as coating films
(Elsevier, 2020-03-18)
In this study, two different bio-based waterborne polyurethanes (WBPUs) that use castor oil and tartaric acid in their formulations were modified by the incorporation of a renewable reinforcement, cellulose nanocrystals ...
Biobased self-healing polyurethane coating with Zn micro-flakes for corrosion protection of AA7475
(2021-01-15)
AA7475 is a modern and competitive high strength alloy of relevance to the aerospace industry. In this work biobased organic polyurethane coatings were prepared from vegetable oils (crambe oil and castor oil) without (blank ...
Natural and Modified Montmorillonite Clays as Catalysts for Synthesis of Biolubricants
(MDPI AG, 2018-09)
In this study, natural and modified clays were evaluated as catalysts in an esterification reaction to obtain bio-based lubricants. The biolubricants are environmentally preferred to petroleum-based lubricants because they ...
Composite films obtained from a waterborne biopolyurethane. Incorporation of tartaric acid and nanocellulose
(Elsevier Science, 2019-12)
Unmodified castor oil (CO) and tartaric acid (TA), a dihydroxy acid that can be obtained from various by-products of the grape processing to wine, were used in order to obtain bio-based waterborne polyurethanes (WBPUs). ...
Waterborne polyurethane nanocomposites based on vegetable oil and microfibrillated cellulose
(John Wiley & Sons Inc, 2016-09-06)
This work analyzes the differences in the final properties of two waterborne polyurethanes (WBPU) prepared with twomacrodiols of different chemical structure, but similar molecular weight, as well as the variations caused ...