Preparation and characterization of cellulose hybrids grafted with the polyhedral oligomeric silsesquioxanes (POSS)

• Published in: Carbohydrate polymers Vol. 77; no. 4; pp. 858 - 862
• Main Authors: Xie, Kongliang, Zhang, Yanli, Yu, Yanhong
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 19.07.2009; Elsevier
• Subjects: Applied sciences; Biomaterials; biopolymers; Cellulose; Cellulose and derivatives; cellulosic fibers; chemical characterization; chemical grafting; composite polymers; crosslinking; crystal structure; Exact sciences and technology; graft copolymerization; Hybrid; nanotechnology; Natural polymers; Organic/inorganic; Physicochemistry of polymers; POSS; reaction mechanisms; surface morphology; synthesis; thermal properties; ultrastructure; Hybrid; Organic/inorganic; POSS; Cellulose; Biomaterials; Silsesquioxane polymer; Thermal transition; Nitrogen heterocycle; Crosslinking; Silsesquioxane copolymer; Surface topography; Experimental study; Crosslinked copolymer; Polyhedral molecule; Morphology; Preparation; Cellulose derivatives; Ureas
• ISSN: 0144-8617; 1879-1344
• DOI: 10.1016/j.carbpol.2009.03.010

The cellulose hybrids with polyhedral oligomeric silsesquioxane (POSS) are synthesized by cross-linking graft reaction. Dimethylol dihydroxy ethylene urea (DDEU) as cross-linking agent is used in the graft reaction. The chemical and surface morphological structures of the am-POSS grafted cellulose hybrids are characterized with micro-FT-IR spectra, silicon element analysis, X-ray diffraction, SEM, AFM, and DSC. The results show that the am-POSS grafted cellulose hybrids form new macromolecular structures containing POSS nano-silica particles. POSS particles are evenly dispersed at the nanometer scale in the cellulose host matrix, bonding to the cellulose through covalent bonds. The thermal properties of the am-POSS grafted cellulose hybrids are improved.