Biomaterial Database

Fabrication and characterization of hybrid sodium montmorillonite/TiO2 reinforced cross-linked wheat starch-based nanocomposites. 2019

A R Yousefi, and B Savadkoohi, and Y Zahedi, and M Hatami, and K Ako

Department of Chemical Engineering, Faculty of Engineering, University of Bonab, Bonab, Iran. Electronic address: a_yousefi@bonabu.ac.ir.

In this work, a novel cross-linked wheat starch (CLWS)-based ternary nanocomposite films with incorporation of sodium montmorillonite (Na-MMT) (3%-7% wt.) and titanium dioxide (TiO2) (1%-4% wt.) nanoparticles were fabricated using casting method. CLWS film exhibited better physical, mechanical and thermal properties compared with the native wheat starch (NWS) film. Incorporation of the nanoparticles into the film solution resulted in a decrease in water vapor permeability (WVP), water solubility (WS), moisture content (MC) of the films, whereas density increased. Nano-TiO2 blocked the UV light effectively and >99% of UV was removed by the film containing 4% TiO2. Affecting by the addition of nanomaterials, the amounts of ultimate tensile strength (UTS) and Young's modulus (YM) values enhanced, while elongation at break (EB) ones diminished. By the Furrier transform infrared (FT-IR) spectroscopy, the creation of new hydrogen bonds between the starch's hydroxyl groups and nanomaterials was confirmed. Formation of a completely exfoliated structure for CLWS/Na-MMT/TiO2 nanocomposites was proved by XRD. SEM micrographs exhibited appropriate dispersion of nanomaterials through the films surface particularly at lower concentrations. The thermogravimetric analysis (TGA) results revealed that the addition of nanomaterials especially TiO2 improved the thermal stability of the nanocomposite films.

UI	MeSH Term	Description	Entries
D008422	Materials Testing	The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility.	Biocompatibility Testing,Biocompatible Materials Testing,Hemocompatibility Testing,Testing, Biocompatible Materials,Testing, Hemocompatible Materials,Hemocompatibility Testings,Hemocompatible Materials Testing,Materials Testing, Biocompatible,Materials Testing, Hemocompatible,Testing, Biocompatibility,Testing, Hemocompatibility,Testing, Materials,Testings, Biocompatibility
D001546	Bentonite	A colloidal, hydrated aluminum silicate that swells 12 times its dry size when added to water.	Montmorillonite,Montmorrillonite
D001672	Biocompatible Materials	Synthetic or natural materials, other than DRUGS, that are used to replace or repair any body TISSUES or bodily function.	Biomaterials,Bioartificial Materials,Hemocompatible Materials,Bioartificial Material,Biocompatible Material,Biomaterial,Hemocompatible Material,Material, Bioartificial,Material, Biocompatible,Material, Hemocompatible
D013057	Spectrum Analysis	The measurement of the amplitude of the components of a complex waveform throughout the frequency range of the waveform. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)	Spectroscopy,Analysis, Spectrum,Spectrometry
D013213	Starch	Any of a group of polysaccharides of the general formula (C6-H10-O5)n, composed of a long-chain polymer of glucose in the form of amylose and amylopectin. It is the chief storage form of energy reserve (carbohydrates) in plants.	Amylomaize Starch,Amylum,Cornstarch,Keoflo,Starch, Amylomaize
D013818	Thermogravimetry	Technique whereby the weight of a sample can be followed over a period of time while its temperature is being changed (usually increased at a constant rate).	Thermogravimetries
D014025	Titanium	A dark-gray, metallic element of widespread distribution but occurring in small amounts with atomic number, 22, atomic weight, 47.867 and symbol, Ti; specific gravity, 4.5; used for fixation of fractures.
D014908	Triticum	A plant genus of the family POACEAE that is the source of EDIBLE GRAIN. A hybrid with rye (SECALE CEREALE) is called TRITICALE. The seed is ground into FLOUR and used to make BREAD, and is the source of WHEAT GERM AGGLUTININS.	Wheat,Durum Wheat,Triticum aestivum,Triticum durum,Triticum spelta,Triticum turgidum,Triticum turgidum subsp. durum,Triticum vulgare,Durum Wheats,Wheat, Durum
D053761	Nanocomposites	Nanometer-scale composite structures composed of organic molecules intimately incorporated with inorganic molecules. (Glossary of Biotechnology and Nanobiotechology Terms, 4th ed)	Nanocomposite
D055595	Mechanical Phenomena	The properties and processes of materials that affect their behavior under force.	Mechanical Concepts,Mechanical Processes,Mechanical Phenomenon,Mechanical Process,Concept, Mechanical,Concepts, Mechanical,Mechanical Concept,Phenomena, Mechanical,Phenomenon, Mechanical,Process, Mechanical,Processes, Mechanical