Thermal and Structural of Methyl Cellulose

2014 ◽  
Vol 979 ◽  
pp. 307-310 ◽  
Author(s):  
W. Siriprom ◽  
S. Kongsriprapan ◽  
K. Teanchai
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Thermo Gravimetric Analysis ◽  
Methyl Cellulose ◽  
Gravimetric Analysis ◽  
X Ray Diffraction ◽  
Biodegradable Film ◽  
Thermo Gravimetric ◽  
X Ray ◽  
The Fourier Transform

The present study aims to investigate the physicochemical properties of the methyl cellulose. The information of this investigate has been used to reference in preparing biodegradable film. It was observed that the Fourier Transform Infrared Spectroscopy (FTIR) spectroscopy show the hydrogen bond’s formation and the Energy Dispersive X-Ray Fluorescence (EDXRF) show the chemical and level of the composition element, which Copper (Cu) has the highest accumulate. Another that, the XRD spectra which investigated by X-Ray Diffraction (XRD) show the methyl cellulose had lowered crystalline. Another that, the Thermo-Gravimetric Analysis (TGA) was used to investigate the effect of heating and influence of thermal.

scholarly journals Synthesis of a novel magnetic polyacrylamide coagulant and its application in wastewater purification

2016 ◽  
Vol 75 (3) ◽  
pp. 581-586 ◽  
Author(s):  
Zheng Zhou ◽  
Aiqin Shan ◽  
Yuxia Zhao
Keyword(s):  
Suspended Solids ◽  
Removal Rate ◽  
Thermo Gravimetric Analysis ◽  
Gravimetric Analysis ◽  
X Ray Diffraction ◽  
Wastewater Purification ◽  
Thermo Gravimetric ◽  
Turbidity Removal ◽  
X Ray ◽  
Magnetite Fe3o4

In this study, a novel magnetic polyacrylamide (PAM) coagulant based on the core of magnetite (Fe3O4), with oleic acid serving as modifier and acrylamide as monomer, was synthesized to remove suspended solids in kaolin-suspended water. The composites were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, thermo gravimetric analysis and scanning electron microscopy. The results demonstrated that 82.8% of turbidity removal rate was obtained in 5 min of static settling in simulated kaolin-suspended water. This proved to be superior to that of PAM and poly aluminum chloride. Also confirmed in this study was the fact that zeta potential was significantly correlated with turbidity removal.

Thermo Gravimetric Analysis Study of PMMA/TiO2 Nanocomposites

2013 ◽  
Vol 832 ◽  
pp. 816-820
Author(s):  
N.N. Hafizah ◽  
Mohamad Hafiz Mamat ◽  
Mohd Hanafiah Abidin ◽  
Che Mohd Som Said ◽  
Mohamad Rusop
Keyword(s):  
Thermal Decomposition ◽  
Particle Size ◽  
Thermo Gravimetric Analysis ◽  
Polymer Chains ◽  
Gravimetric Analysis ◽  
X Ray Diffraction ◽  
Thermo Gravimetric ◽  
Analysis Study ◽  
X Ray ◽  
Filler Size

The polymer matrix of poly (metyl methacrylate) (PMMA) has been introduced with the titanium dioxide (TiO2) nanopowder to study the effects of the TiO2size on the properties of the nanocomposites. The particle size is playing an important role in determining the properties of the nanocomposite. The decrease the filler size has increase the thermal decomposition of the nanocomposites due to the higher amount of the filler between the polymer chains. The results of X-ray diffraction (XRD) and Energy Dispersive X-Ray Spectrometry (EDS) also were discussed in this paper.

Preparation of α-Al2O3 Powders via Non-Hydrolytic Sol-Gel Method

2015 ◽  
Vol 1104 ◽  
pp. 3-8 ◽  
Author(s):  
Tong Qing Zhou ◽  
Ting Chen ◽  
Wei Hui Jiang ◽  
Jian Min Liu ◽  
Xiao Jun Zhang ◽  
...  
Keyword(s):  
Sol Gel ◽  
Thermo Gravimetric Analysis ◽  
Raw Material ◽  
Gravimetric Analysis ◽  
X Ray Diffraction ◽  
Thermo Gravimetric ◽  
X Ray ◽  
Corundum Structure ◽  
Transmission Electron ◽  
Peg 600

Corundum structurealumina (α-Al2O3) powders were prepared via a non-hydrolytic sol-gel (NHSG) method using aluminum as raw material, ethanol as solvent, and iodine as catalyst. X-ray diffraction (XRD), differential thermal analysis (DTA), thermo gravimetric analysis (TG) were used to characterize the crystal phase of the products, while scanning electron microscopy (SEM) and transmission electron microscope (TEM) were employed to analyze the morphology. The results indicated that γ-Al2O3 was completely changed to α-Al2O3 at 1100 o C with a bit of aggregation. When 3 wt.% polyethylene glycol 600 (PEG 600) was introduced on the NHSG process, the dispersion was improved and the particle size decreased to100 nm.

Preparation and Stabilization of Chitosan-Lipase Composite within Mesoporous Silica Material

2007 ◽  
Vol 124-126 ◽  
pp. 1717-1720 ◽  
Author(s):  
Sun Sang Kwon ◽  
Sang Hoon Jeon ◽  
Jeong Kuk Shon ◽  
Duck Hee Kim ◽  
Ih Seop Chang ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Lipase Activity ◽  
Thermo Gravimetric Analysis ◽  
Porous Silica ◽  
Gravimetric Analysis ◽  
Practical Application ◽  
X Ray Diffraction ◽  
Thermo Gravimetric ◽  
X Ray ◽  
Silica Material

To improve lipase activity and make the particulate carrier for practical application, lipase was conjugated to chitosan(Mwavg=80,000) by immine reaction. The lipase activity of conjugate was 93% of its initial activity at room temperature for 7 months, whereas the intact lipase activity decreased to 40%. And then, lipase-chitosan conjugate was intercalated within porous silica. The composite was characterized by X-ray diffraction, scanning electron microscopy, thermo gravimetric analysis. The Pore size was regulated in the range of 5~15nm. The maximum enzyme activity of lipase-chitosan conjugate needs the structure with 15nm pore of mesoporous silica. The resultant composite was found to have the free flowing property and keep up inner lipase activity.

scholarly journals Ca removal and Mg recovery from flue gas desulfurization (FGD) wastewater by selective precipitation

2017 ◽  
Vol 76 (10) ◽  
pp. 2842-2850 ◽  
Author(s):  
Min Xia ◽  
Chunsong Ye ◽  
Kewu Pi ◽  
Defu Liu ◽  
Andrea R. Gerson
Keyword(s):  
Flue Gas ◽  
Thermo Gravimetric Analysis ◽  
Recovery Process ◽  
Flue Gas Desulfurization ◽  
Gravimetric Analysis ◽  
X Ray Diffraction ◽  
Carbonate System ◽  
Thermo Gravimetric ◽  
Selective Precipitation ◽  
X Ray

Abstract Selective removal of Ca and recovery of Mg by precipitation from flue gas desulfurization (FGD) wastewater has been investigated. Thermodynamic analysis of four possible additives, Na2CO3, Na2C2O4, NaF and Na2SO4, indicated that both carbonate and oxalate could potentially provide effective separation of Ca via precipitation from Mg in FGD wastewater. However, it was found experimentally that the carbonate system was not as effective as oxalate in this regard. The oxalate system performed considerably better, with Ca removal efficiency of 96% being obtained, with little Mg inclusion at pH 6.0 when the dosage was ×1.4 the stoichiometric requirement. On this basis, the subsequent recovery process for Mg was carried out using NaOH with two-step precipitation. The product was confirmed to be Mg(OH)2 (using X-ray diffraction and thermo gravimetric analysis) with elemental analysis suggesting a purity of 99.3 wt.%.

Study on Effects of ZrO2 on High-Resistance Performance of the Silicone Coating

2013 ◽  
Vol 859 ◽  
pp. 365-368
Author(s):  
Li Bai ◽  
Xiao Qing Wu
Keyword(s):  
High Temperature ◽  
Thermo Gravimetric Analysis ◽  
Silicone Resin ◽  
Gravimetric Analysis ◽  
X Ray Diffraction ◽  
Thermo Gravimetric ◽  
Pencil Hardness ◽  
X Ray ◽  
Silicone Coating ◽  
Resistance Performance

A high-temperature resistant coating that can be used at 1300 °C was prepared in combination with silicone resin and fillers. The effect of ZrO2on high-temperature resistant and mechanical properties of the coating was studied by thermo gravimetric analysis (TG) and X ray diffraction (XRD) .The results shows that the performance of the coating is the best when the amount of ZrO2is 20wt%.the coating can resist 1300 °C, pencil hardness reaches 3H; Meanwhile, It can improve the adhesion and flexibility of the coating.

Synthesis of carbon-encapsulated magnetic nanoparticles by a grain-boundary-reaction

2003 ◽  
Vol 776 ◽  
Author(s):  
Qixiang Wang ◽  
Guoqing Ning ◽  
Fei Wei ◽  
Guohua Luo
Keyword(s):  
Magnetic Nanoparticles ◽  
Grain Boundary ◽  
Thermo Gravimetric Analysis ◽  
Gravimetric Analysis ◽  
Vibrating Sample Magnetometer ◽  
X Ray Diffraction ◽  
Thermo Gravimetric ◽  
X Ray ◽  
Boundary Reaction ◽  
Electronic Microscope

AbstractCarbon-encapsulated ferric magnetic nanoparticles were prepared by the grain-boundary-reaction of ultrafine goethite particles. The mechanism of the grain-boundary-reaction was studied with high-resolution transmission electronic microscope, X-ray diffraction and thermo gravimetric analysis. The magnetic properties are measured with a vibrating sample magnetometer. The diameter of carbon-encapsulated ferric magnetic nanoparticles is 30~60 nm, and the coercive force and saturate magnetization are 315 Oe and 30 emu /(g powder), respectively. These composite particles are very stable in air.

Powder X-ray diffraction and thermal decomposition correlation studies of nano-crystalline styrene-maleic anhydride graft copolymer-ZnO composites

e-Polymers ◽  
2012 ◽  
Vol 12 (1) ◽  
Author(s):  
Inderjeet Kaur ◽  
Bikram Singh ◽  
Parveen Bhatt ◽  
Sarvjeet S. Bhatt
Keyword(s):  
Thermal Decomposition ◽  
Graft Copolymers ◽  
Thermo Gravimetric Analysis ◽  
Gravimetric Analysis ◽  
X Ray Diffraction ◽  
Thermo Gravimetric ◽  
Nano Composite ◽  
X Ray ◽  
Nano Crystalline ◽  
Styrene Maleic Anhydride

AbstractNano-crystalline (nc) polymer-ZnO composite material has been successfully synthesized by treating styrene-maleic anhydride (SMA) and its graft copolymers with acrylic acid, (AAc), and acrylamide, (AAm), synthesized by chemical method with different wt% ratios of nZnO (40 nm), prepared indigenously in our laboratory, to yield polymer-ZnO nano-composite material. Characterization of SMA, grafted SMA, nc-SMA-ZnO, nc-grafted SMA-ZnO composites was carried out by X-ray diffraction and thermo-gravimetric analysis. Both the studies show an interesting correlation between X-ray and thermal data. XRD pattern of SMA copolymer shows it to be amorphous, while SMA-g-poly(AAc) and SMA-gpoly( AAm) graft copolymers show crystalline orthorhombic structure having (102) orientation with particle size of nano dimensions (44 and 40 nm respectively). Addition of nZnO to nc-SMA-g-poly(AAc) and nc-SMA-g-poly(AAm) shows appreciation in the crystalline behavior with increased intensity of the peaks in the XRD patterns. Thermo-gravimetric analysis (TGA) of SMA shows single stage decomposition with regular loss of weight while nc-SMA-g-poly(AAc) and nc-SMAg- poly(AAm) graft copolymers respectively show an abrupt weight loss up to 25% and 45% at 121.370C and thereafter proceeds with regular decomposition. However, the corresponding composite of SMA with nZnO (10 wt%) shows an abrupt weight loss of 50% similar to grafted SMA while the ZnO embedded composites of AAc and AAm grafted SMA lose 95% of the weight abruptly at the same temperature i.e.121.37 °C. The increased abrupt loss in nZnO- SMA and nZnO-nc-SMA grafted composite is correlated to the increased crystallinity upon addition of nZnO particles to the polymer system. Because of the spontaneous thermal decomposition and release of large amount of heat energy, the newly synthesized nano-composite polymer material can find use as high energy material

Intercalation of Ketoprofen into Mg-Al Hydrotalcites. Synthesis and Characterization

2008 ◽  
Vol 59 (4) ◽  
Author(s):  
Mihaela Frunza ◽  
Gabriela Lisa ◽  
Radu Zonda ◽  
Marcel Ionel Popa
Keyword(s):  
Ftir Spectroscopy ◽  
Thermo Gravimetric Analysis ◽  
Synthesis And Characterization ◽  
Gravimetric Analysis ◽  
X Ray Diffraction ◽  
Thermo Gravimetric ◽  
X Ray ◽  
Diffraction Peaks ◽  
Xrd Patterns ◽  
Analysis Point

Ketoprofen a non-steroidal anti-inflammatory drug was intercalated into Mg-Al hydrotalcites lamella as an inorganic host by different methods. The intercalation compounds were examined by X-ray diffraction (XRD), FTIR spectroscopy, differential thermal analysis and thermo gravimetric analysis. The XRD patterns of the samples the diffraction peaks are typical to those of well crystallized solids with the hydrotalcite structure. The FTIR spectroscopy and thermogravimetric (DTG) analysis point out the presence of the organic compound in the network structure of the synthesized hydrotalcites.

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