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Two different incorporation routes of cellulose nanocrystals in waterborne polyurethane nanocomposites
(Elsevier, 2016-03)
The renewability, availability and low-cost of eco-friendly cellulose nanocrystals (CNC), have gaining attention for nanocomposites preparation due to their unique properties in the nanoscale and their water dispersibility, ...
The Importance of Fiber/Matrix Adhesion and Annealing Process in Water Uptake of PLA/PMMA Matrix Composites Reinforced with Sisal Fibers: The Effect of Coupling Agent Addition
(Taylor & Francis, 2022-01-22)
With the aim to open new applications possibilities to novel biocomposites based on PLA/PMMA matrix and reinforced with sisal fibers, it was studied the effect of water immersion aging on biocomposite tensile properties. ...
Shape-memory properties of crosslinked biobased polyurethanes
(2016-03-25)
Biobased crosslinked polyurethanes were synthesized and characterized as shape-memory polymers. Both the macrodiol and the diisocyanate were derived from renewable sources; the first one from castor oil, and the second one ...
Preparation and characterization of composites based on poly(lactic acid)/poly(methyl methacrylate) matrix and sisal fiber bundles: The effect of annealing process
(Sage, 2020-06-12)
The interest on poly(lactic acid) (PLA)/poly(methyl methacrylate) (PMMA) blends has increased during the last years due to their promising properties. The novelty of the current work focuses on the preparation and ...
The Importance of Coupling Agent on Tensile and Thermomechanical Performance of Annealed Composites Based on Poly(Lactic Acid)/Poly(Methyl Methacrylate) Matrix and Sisal Fiber Bundles
(Taylor & Francis, 2021-04-22)
The main aim of this work is to study the importance of the coupling agent
on tensile and thermomechanical performance of annealed composites
based on poly (lactic acid)/poly (methyl methacrylate) matrix and sisal ...
Properties of flexible polyurethane foams containing isocyanate functionalized kraft lignin
(Elsevier, 2017-02-20)
A commercial kraft lignin (k-lignin) was successfully functionalized by means of the reaction of an isocyanate group from isophorone diisocyanate (IPDI) with hydroxyl groups present in lignin (k-IPDI), for their further ...
Synthesis and characterization of polyurethanes with high renewable carbon content and tailored properties.
(2016-08-31)
Thermoplastic and cross-linked biobased polyurethanes with a renewable carbon content ranging from 78 to 98% were synthesized and characterized. The macrodiol and the diisocyanate used were derived from renewable source, ...
Synthesis of waterborne polyurethane-urea dispersions with chain extension step in homogeneous and heterogeneous media
(Elsevier, 2016-05-13)
[EN Hypothesis: The possibility of tailoring the final properties of environmentally friendly waterborne
polyurethane and polyurethane-urea dispersions and the films they produce makes them attractive for
a wide range ...
Synthesis and characterisation of polyurethane elastomers with semi-products obtained from polyurethane recycling.
(2016-10-01)
In this work polyurethane elastomers were synthesised by using different mixtures of a petrochemical and glycerolysate polyols and 4,4-diphenylmethane diisocyanate (MDI). Glycerolysate polyol was produced from polyurethane ...
Self-assembly and crystallization of double crystalline aliphatic thermoplastic biopolyurethane and its nucleation with cellulose nanocrystals
(Elsevier, 2022-01-13)
[EN] An aliphatic segmented thermoplastic biopolyurethane (STPU), based on aliphatic hexamethylene diisocyanate (HDI) and 1,3 propanediol (1,3PD) as urethane rich phase and a poly(sebacate) as a macrodiol phase, with ~50 ...