Bio-based polyurethane reinforced with cellulose nanofibers: A comprehensive investigation on the effect of interface

被引：114

作者：

Benhamou, Karima ^{[1
,2
,3
]}

Kaddami, Hamid ^{[1
]}

Magnin, Albert ^{[4
]}

Dufresne, Alain ^{[2
,3
]}

Ahmad, Azizan ^{[5
]}

机构：

[1] Cadi Ayyad Univ, Fac Sci & Technol, Lab Organometall & Macromol Chem Composite Mat, Marrakech 40000, Morocco

[2] Univ Grenoble Alpes, LGP2, F-38000 Grenoble, France

[3] CNRS, LGP2, F-38000 Grenoble, France

[4] UJF Grenoble 1, Grenoble INP, UMR CNRS 5520, Lab Rheol & Proc, F-38041 Grenoble 9, France

[5] Univ Kebangsaan Malaysia, Fac Sci & Technol, Sch Chem Sci & Food Technol, Bangi 43600, Selangor Darul, Malaysia

来源：

CARBOHYDRATE POLYMERS | 2015年 / 122卷

关键词：

PCL-based polyurethane; Nanocomposites; Cellulose nanofibers; Interface; Solubility parameters; PLANT-CELL-WALL; WATERBORNE POLYURETHANE; SOLUBILITY PARAMETERS; PHYSICAL-PROPERTIES; FIBERS; COMPOSITES; NANOCOMPOSITES; NANOCRYSTALS; WHISKERS; MATRIX;

D O I：

10.1016/j.carbpol.2014.12.081

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Novel bio-based polyurethane (PU) nanocomposites composed of cellulose nanofiller extracted from the rachis of date palm tree and polycaprolactone (PCL) dial based PU were prepared by casting/evaporation. Two types of nanofiber were used: cellulose nanofibrils (CNFs) and cellulose nanocrystals (CNCs). The mechanical and thermal properties of the nanocomposite films were studied by DMA, DSC, and tensile tests and the morphology was investigated by SEM. Bionanocomposites presented good mechanical properties in comparison to neat PU. While comparing both nanofillers, the improvement in mechanical and thermal properties was more pronounced for the nanocomposites based on CNF which could be explained, not only by the higher aspect ratio of CNF, but also by their better dispersion in the PU matrix. Calculation of the solubility parameters of the nanofiller surface polymers and of the PU segments portend a better interfacial adhesion for CNF based nanocomposites compared to CNC. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：202 / 211

页数：10

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