Synthesis and characterization of cellulose/silica hybrid materials with chemical crosslinking

• Published in: Carbohydrate polymers Vol. 78; no. 4; pp. 799 - 805
• Main Authors: Xie, Kongliang, Yu, Yanhong, Shi, Yaqi
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 17.11.2009; Elsevier
• Subjects: Applied sciences; biocompatible materials; cellulose; Composites; Crosslinking; Exact sciences and technology; Forms of application and semi-finished materials; Fourier transform infrared spectroscopy; gelation; Hybrid; Nanocellulose; nitrogen; Organic/inorganic; Polymer industry, paints, wood; silica; Sol–gel process; synthesis; Technology of polymers; thermal properties; X-ray diffraction; Hybrid; Crosslinking; Nanocellulose; Organic/inorganic; Sol–gel process; Thermal transition; Hybrid material; Cellulose; Organic silane; Surface topography; Triazine derivative polymer; Experimental study; Silica; Coupling agent; Quaternary ammonium compound; Sol gel process; Morphology; Preparation; Cellulose derivatives; Triazine derivatives; Crosslinked polymer; Sol-gel process; Silicon polymer; Quaternary ammonium polymer
• ISSN: 0144-8617; 1879-1344
• DOI: 10.1016/j.carbpol.2009.06.019

The cellulose/silica hybrid biomaterials are prepared by sol–gel covalent crosslinking process. The tetraethoxysilane (TEOS) as precursor, γ-aminopropyltriethoxylsilane (APTES) as couple agent, and 2,4,6-tri[(2-epihydrin-3-bimethyl-ammonium)propyl]-1,3,5-triazine chloride (Tri-EBAC) as crosslinking agent, are used in the sol–gel crosslinking process. The chemical and morphological structures of cellulose/silica covalent crosslinking hybrids are investigated with micro-FT-IR spectra, nitrogen element analysis, X-ray diffraction, SEM, AFM, and DSC. The results show that the cellulose/silica hybrids form new macromolecular structures. In sol–gel process, inorganic particles are dispersed at the nanometer scale in the cellulose host matrix, bounding to the cellulose through covalent bonds. The cellulose/silica covalent crosslinking hybrid can form good and smooth film on the cellulose. The thermal properties of organic/inorganic hybrids are improved.