Cellulose micro/nanocrystals reinforced polyurethane
By N. Marcovich, M. Auad, Natalia E. Bellesi, Steven Nutt, M. I. Aranguren. 2006
222 citations recorded by the source corpus.
Nano- and micron-sized cellulose crystals were prepared and utilized as reinforcements for polyurethane composites. The cellulose crystals obtained from microcrystalline cellulose (MCC) were incorporated into a polar organic solvent, dimethylformamide (DMF), and ultrasonicated to obtain a stable suspension. The suspension was an effective means for incorporating the cellulose crystals into the polyol-isocyanate mixture, utilized to produce polyurethane composite films. The use of DMF presents an interesting alternative for the use of cellulose crystals as reinforcement of a broad new range of polymers. Moreover, the rheology of the uncured liquid suspensions was investigated, and analysis of the results indicated the formation of a filler structure pervading the liquid suspension. Besides, films were prepared by casting and thermal curing of the stable suspensions. Thermomechanical and mechanical testing of the films were carried out to analyze the performance of the composites. The results indicated that a strong filler-matrix interaction was developed during curing as a result of a chemical reaction occurring between the crystals and the isocyanate component.
Subfields: Biomaterials, Biomedical Engineering, Polymers and Plastics
View Paper: https://www.semanticscholar.org/paper/93587470197d630ae78984bd4bf7b4eaf1846fde
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In Biomaterials
In Biomedical Engineering
In Polymers and Plastics
Citations in the corpus
- Structure and properties of nanocomposite films based on sodium caseinate and nanocellulose fibers (2011, result): “During the cryogenic fracture of the reinforced films, the advancing crack must change path (deflection) because of the rigid filler, as observed by other researchers (Marcovich et al., 2006).”
- CELLULOSIC NANOCOMPOSITES: A REVIEW (2008, background): “…2005; Schroers et al. 2004; Kvien et al. 2005; Ljungberg et al. 2005; Hamad 2006; Renneckar et al. 2006; Oksman and Sain 2006; Wang et al. 2006a; Abe et al. 2007; Marcovich et al. 2006; Petersson et al. 2007; Pu et al. 2007; van den Berg et al. 2007a,b; Ye 2007; Elazzouzi-Hafraoui et al. 2008).”
- Advances in cellulose nanomaterials (2018, unknown): “…Cu-mediated radical polymerization CNC Majoinen et al. (2011) Poly(glycidylmethacrylate) Ammonium cerium(IV) nitrate Nanocellulose Martı́nez-Sanz et al. (2013) Poly(urethane) Polyol-isocyanate polymerization CNC Marcovich et al. (2006) method applied (Nechyporchuk et al. 2014; Nge et al. 2013).”
- Polyurethane Foams Obtained from Castor Oil-based Polyol and Filled with Wood Flour (2009, background): “This behavior is a consequence of the chemical reaction between filler and matrix, which has been already discussed by the authors previously for a cellulosepolyurethane system [21,24].”