Characterization and Morphology of TiO2 Nanocomposites Based on Synthetic and Natural Polymers

Published on Feb 26, 2013
Dadashi1
Estimated H-index: 1
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Saeed1
Estimated H-index: 1
+ 6 AuthorsZahra1
Estimated H-index: 1
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Abstract
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2013
12 Authors (Farhoodi, ..., Abdolrasul)
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This article presents foaming behaviors and cellular structures of poly(lactic acid) (PLA)-clay nanocomposite and respective neat PLA foams using CO2 as a foaming agent. The effects of nanoclay and foaming conditions on the foam morphology and mechanical properties of neat (PLA) and PLA-clay nanocomposites have been investigated by temperature modulated differential scanning calorimeter (TMDSC), X-ray diffraction, scanning electron microscopy, and tensile properties. CO2-induced crystallization ...
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Nanocomposite films for covering applications were developed. Mechanical, radiometric and ultraviolet stability properties of the films were characterized. Nanocomposites were obtained by incorporating nanoadditives to a thermoplastic polymer matrix by melt-mixing in a corotating twin screw extruder. Three common polymers in cover applications were used as matrix: low-density polyethylene, linear low-density polyethylene and ethylene鈥揵utyl acrylate. Three different nanoparticles were used as fil...
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Bionanocomposites from biopolymers and inorganic nanoparticles are of great interest for packaging materials due to their enhanced physical, thermal, mechanical, and processing characteristics. In this study, poly(lactic acid) (PLA) nanocomposites with covalent bonding between TiO2 nanowire surface and PLA chains were synthesized through in situ melt polycondensation. Molecular weight, structure, morphology, and thermal properties were characterized. Fourier transform infrared spectroscopy confi...
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#2Ronald F. Gibson (UNR: University of Nevada, Reno)H-Index: 34
Last. Jonghwan Suhr (UNR: University of Nevada, Reno)H-Index: 19
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Abstract Experimental evidence shows that some nanocomposites with special matrices and filler materials may achieve significant and simultaneous improvements in stiffness, fracture toughness, impact energy absorption and vibration damping, and these characteristics could be of particular importance in automobile or airplane structures. This paper reviews relevant literature which deals with various manifestations of energy absorption of composites from the nano to the macro-scale, with emphasis...
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#1Lyudmil V. Todorov (University of Minho)H-Index: 6
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This study investigates the influence of various nanofillers of different shapes and sizes on the properties of PET nanocomposites. PET was reinforced with 0.3 wt.% of different nanoreinforcements, namely: (i) 1D platelet-like shape of organo-modified layered silicates (montmorillonite) (platelet size approx. 1 x 200 nm) with average agglomerate size of: (a) 30 渭m and (b) 8 渭m; (ii) 3D spherical shape particles of titanium oxide with an average size of 21 nm and (iii) 3D spherical shape silica w...
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Abstract PLA-based composite films with different types of nanoclays, such as Cloisite Na + , Cloisite 30B and Cloisite 20A, were prepared using a solvent casting method and their tensile, water vapor barrier and antimicrobial properties were tested. Tensile strength (TS), elongation at break ( E ), and water vapor permeability (WVP) of control PLA film were 50.45聽卤聽0.75聽MPa, 3.0聽卤聽0.1%, and 1.8聽脳聽10 鈭11 g聽m/m 2 s聽Pa, respectively. TS and E of nanocomposite films prepared with 5聽g of clay/100聽g ...
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The role of both nano-sized of plasma treated Nano Titanium Dioxide particles and strain rate on the tensile properties of plasma treated Nano Titanium Dioxide particles/PP/PLA nano-composites filaments (PTNTOPPCF) was studied. Filaments tensile samples of PTNTOPPCF were prepared by a twin screw mixer- twin screw extruder with a particle content of 0.3~1%. The influence of surface treatment of the particles, with and without low-temperature oxygen plasma treatment, on the physico-mechanical prop...
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#1Lu Xili (HEU: Harbin Engineering University)H-Index: 12
#2Xiuqian Lv (HEU: Harbin Engineering University)H-Index: 1
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A new method of surface modification of TiO2 nanoparticles by surface-grafting L-lactic acid oligomer was developed. The surface-grafting reaction was evaluated by Fourier transformation infrared (FTIR) and thermal gravimetric analysis (TGA). The results showed that L-lactic acid oligomer could be easily grafted onto the TiO2 nanoparticles surface in the presence of stannous octanoate and the highest amount of grafted polymer was about 8.5% in weight. Transmission electron microscopy (TEM) and s...
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#1Lyudmil V. Todorov (University of Minho)H-Index: 6
#2J. C. Viana (University of Minho)H-Index: 23
Poly(ethylene terephthalate) (PET) based nanocomposites containing 3 wt % of different nanoparticles (MontMorilloniTe鈥揗MT; titanium dioxide鈥揟iO2; and silica dioxide鈥揝iO2) were prepared via two independent procedures: mechanical mixing with subsequent direct injection molding (DIM) and mechanical mixing, followed by extrusion blending and injection molding (EIM). The contributions of nanofillers with respect to pure PET were evaluated. The incorporation of nanofillers reduces the intrinsic viscos...
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#1Norio Nakayama (Mitsui Chemicals)H-Index: 6
#2Toyoharu Hayashi (Mitsui Chemicals)H-Index: 6
Abstract Poly( l -lactic acid)鈥揟iO 2 nanoparticle nanocomposite films were prepared by incorporating surface modified TiO 2 nanoparticles into polymer matrices. In the process of preparing the nanocomposite films, severe aggregation of TiO 2 nanoparticles could be reduced by surface modification by using carboxylic acid and long-chain alkyl amine. As a result, the nanocomposite films with high transparency, similar to pure PLA films, were obtained without depending on the amount of added TiO 2 n...
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#1Nehal Salahuddin (Tanta University)H-Index: 22
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Abstract Biodegradable, biocompatible and non-toxic polymer-based nanoparticles are the novel nanotherapeutic tool which is used for adsorption and encapsulation drugs. Extended release formulation of Norfloxacin antibiotic, chemotherapeutic agent model, drug in the form of encapsulated and loaded poly (lactic acid) nanocomposites-based Titanium dioxide (PLA/TiO2) was developed. Nanocomposites were prepared using different contents (1, 3, 5鈥痺t %) and morphologies of TiO2 (spheres (S), rods (R). ...
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