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Solid"green" polyurethanes based on rapeseed oil polyol and modified withglycerol and microcellulose
(Scrivener Publishing, 2016-08-01)
Solid bio-based polyurethanes (PUs) were prepared from a rapeseed oil-based polyol (ROPO) synthesized by epoxidation reaction followed by oxirane ring-opening with diethylene glycol. The reference material was modified by ...
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 ...
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 ...
Chain‑End Functional di‑Sorbitan Oleate Monomer Obtained from Renewable Resources as Precursors for Bio‑Based Polyurethanes
(Journal of Polymers and the Environment, 2022)
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 ...
High-strength composites based on tung oil polyurethane and wood flour: Effect of the filler concentration on the mechanical properties
(John Wiley & Sons Inc, 2009-02)
New composite materials with a high percentage of their composition based on renewable resources, matrix and reinforcement, were prepared. The excellent compatibility of the main phases lead to an unusual outstanding ...
Biobased porous acoustical absorbers made from polyurethane and waste tire particles
(Elsevier, 2016-11-09)
The production of flexible polyurethane foams (FPF) with good acoustical performance to control sound and noise and incorporating bio/recycled raw materials is an interesting alternative to conventional acoustic absorbent ...
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. ...