Resonant Microcantilever Based Micro Thermal Gravimetric Analyzer (μ-TGA)

2021 ◽  
Author(s):  
Fanglan Yao ◽  
Xinyu Li ◽  
Pengcheng Xu ◽  
Haitao Yu ◽  
Xinxin Li
Keyword(s):  
Thermal Gravimetric ◽  
Thermal Gravimetric Analyzer

scholarly journals Thermal Effect of Ceramic Nanofiller Aluminium Nitride on Polyethylene Properties

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Omer Bin Sohail ◽  
P. A. Sreekumar ◽  
S. K. De ◽  
Masihullah Jabarullah Khan ◽  
Abbas Hakeem ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Ethylene Polymerization ◽  
Filler Loading ◽  
Aluminium Nitride ◽  
Thermal Gravimetric ◽  
X Ray Diffraction ◽  
Sem Images ◽  
Nano Composite ◽  
X Ray ◽  
Thermal Gravimetric Analyzer

Ethylene polymerization was done to form polyethylene nano-composite with nanoaluminum nitride using zirconocene catalysts. Results show that the catalytic activity is maximum at a filler loading of 15 mg nanoaluminum nitride. Differential scanning calorimeter (DSC) and X-ray diffraction (XRD) results show that percentage crystallinity was also marginally higher at this amount of filler. Thermal behavior of polyethylene nanocomposites (0, 15, 30, and 45) mg was studied by DSC and thermal gravimetric analyzer (TGA). Morphology of the component with 15 mg aluminium nitride is more fibrous as compared to 0 mg aluminium nitride and higher filler loading as shown by SEM images. In order to understand combustibility behavior, tests were performed on microcalorimeter. Its results showed decrease in combustibility in polyethylene nanocomposites as the filler loading increases.

scholarly journals Silica Modified by Using Alcohol Polyoxyethylene Ether and Silane Coupling Agent together to Achieve High Performance Rubber Composites Using Latex Compounding Method

2017 ◽  
Author(s):  
Junchi Zheng ◽  
Xin Ye ◽  
Dongli Han ◽  
Suhe Zhao ◽  
Xiaohui Wu ◽  
...  
Keyword(s):  
High Performance ◽  
Silica Surface ◽  
Thermal Gravimetric ◽  
Rubber Composites ◽  
Polyoxyethylene Ether ◽  
Thermal Gravimetric Analyzer ◽  
Silane Coupling ◽  
Mechanical Performances ◽  
Physical And Chemical ◽  
Latex Compounding

Nowadays, the study of preparing silica/rubber composites, which can be used in “green tire”, in energy saving method is fast-growing. In our work, silica modified by using alcohol polyoxyethylene ether (AEO) and 3-Mercaptopropyltriethoxysilane (K-MEPTS) together were investigated. Thermal gravimetric analyzer (TGA) result indicated that both AEO and K-MEPTS could be grafted on the silica surface. Raman spectroscopy confirmed that the AEO could generate a certain steric hindrance for the mercaptopropyl group on K-MEPTS. Silica modified by using AEO and K-MEPTS together can be completely co-coagulated with the rubber in preparing silica/natural rubber (NR) composites by latex compounding method. AEO can form a physical interface between silica and rubber; meanwhile, K-MEPTS can form a chemical interface between silica and rubber. The effects of chemical and physical interface between silica and rubber on dynamic and mechanical performances of silica/NR composites were also given in this research. A proper combination of physical and chemical interface between silica and NR can improve performances of silica/NR composites.

Graphene/Thermoplastic Polyurethane Composites

2018 ◽  
Vol 773 ◽  
pp. 77-81
Author(s):  
Warrayut Kanabenja ◽  
Pranut Potiyaraj
Keyword(s):  
Graphene Oxide ◽  
Thermoplastic Polyurethane ◽  
Morphological Properties ◽  
Heat Of Fusion ◽  
Thermal Gravimetric ◽  
Graphene Nanocomposites ◽  
Melt Compounding ◽  
Thermal Gravimetric Analyzer ◽  
Higher Temperature ◽  
Polyurethane Composites

Thermoplastic polyurethane/graphene nanocomposites were successfully prepared by mixing masterbatches with neat polymers using the melt compounding process. Graphene was obtained from graphite by the chemical mean. Graphite was initially converted into graphite oxide which was then converted to graphene oxide. Graphene oxide was then reduced by L-ascorbic acid to obtain graphene. The effects of graphene addition on thermal and morphological properties of nanocomposite were studied by a differential scanning calorimeter, a thermal gravimetric analyzer and a scanning electron microscope. TPU/graphene nanocomposites showed higher melting temperature compared to TPU. On the other hand, heat of fusion of nanocomposites was lowered. TPU and TPU/graphene nanocomposites have two steps of decomposition. The first degradation of TPU occurred at higher temperature compared with nanocomposites but the second degradation showed the opposite results. The percentage of residue after thermal degradation of nanocomposites was lower than that of TPU. For surface morphology, nanocomposite exhibited the rougher surface comparing with TPU and well graphene dispersion in TPU phase was achieved. Nevertheless, there were some agglomeration of graphene.

Dynamic Mechanical Properties and Thermal Stability of PTT/POE/OMMT Nanocomposites

2011 ◽  
Vol 366 ◽  
pp. 306-309
Author(s):  
Ming Tao Run ◽  
Na Li ◽  
Bing Tao Xing ◽  
Meng Yao ◽  
Wen Zhou
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Dynamic Mechanical Properties ◽  
Thermal Gravimetric ◽  
Dynamic Mechanical ◽  
Thermal Gravimetric Analyzer ◽  
Transmission Electron ◽  
Reinforcing Agent ◽  
Thermal Stability Of

The dynamic mechanical properties, phase morphology and thermal stability of the poly(trimethylene terephthalate)/maleinized poly(octene-ethylene)/organo-montmorillonite nanocomposites (PTT/POE/OMMT) were investigated by using the thermodynamic mechanical analyzer (DMA), transmission electron microscopy (TEM) and thermal gravimetric analyzer (TGA), respectively. The results suggest that the modulus of elasticity of the PTT/POE/OMMT nanocomposite increases, and the glass transition temperature first slightly decreases and then increases with increasing OMMT content because that the TPP plays the role of plasticizer and OMMT plays the role of reinforcing agent. OMMT disperse evenly in the polymer matrix with most of the strip-like sheet morphology. The addition of the OMMT does not apparently affect the thermal stability of the PTT/POE/OMMT nanocomposite.

CTAB-Assisted Precipitation Synthesis of Ca(OH)2 Sorbent for CO2 Captures

2016 ◽  
Vol 840 ◽  
pp. 416-420
Author(s):  
Farah Diana Mohd Daud ◽  
Srimala Sreekantan ◽  
Abdul Rahman Mohamed
Keyword(s):  
Particle Size ◽  
Cetyltrimethylammonium Bromide ◽  
Morphological Changes ◽  
Hexagonal Phase ◽  
Particle Growth ◽  
Precipitation Method ◽  
Thermal Gravimetric ◽  
Xrd Pattern ◽  
Thermal Gravimetric Analyzer ◽  
Bundle Structure

Ca (OH)2 sorbent with novel pods bundle structure were successfully synthesized by precipitation method by using Cetyltrimethylammonium bromide (CTAB) as cationic surfactant. The effects of CTAB on the morphologies of Ca (OH)2 sorbent were investigated. The results showed that the presence of CTAB could significantly differ the shape and particle size of the Ca (OH)2 sorbent which synthesized in ethanol media at 35°C for 30 minutes. The XRD pattern indicated that the as-prepared product were well-crystallized hexagonal phase of Ca (OH)2 sorbent. Possible mechanisms for the CTAB assisted particle growth of Ca (OH)2 sorbent are discussed. The Ca (OH)2 sorbent have been studied by thermal gravimetric analyzer (TGA) at a 650oC carbonation temperature. The morphological changes and particle size of the sorbent have greatly influenced the CO2 capture performance.

Fabrication of Polyvinylpyrrolidone/Boehmite Nanofibers by Electrospinning

2014 ◽  
Vol 789 ◽  
pp. 259-261
Author(s):  
Zhi Jie Wang ◽  
Jing Hua Gong ◽  
Shu Guang Yang ◽  
Jing Hong Ma ◽  
Jian Xu
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Fourier Transform ◽  
Thermal Properties ◽  
Field Emission ◽  
Thermal Gravimetric ◽  
Alumina Nanofibers ◽  
Thermal Gravimetric Analyzer ◽  
Ft Ir ◽  
Scanning Electron

Polyvinylpyrrolidone (PVP)/boehmite nanocomposites fibers were successfully prepared by electrospinning using boehmite sol containing PVP as the spinning solution. Several techniques, including Fourier transform infrared (FT-IR), thermal gravimetric analyzer (TGA) and field emission scanning electron microscopy (FE-SEM) were used to characterize their ingredients, thermal properties and morphology. The results showed that PVP concentration exhibited significant effect on the PVP/boehmite nanofibers morphology. With increasing PVP concentration, the morphology changed from beaded, beaded fiber to uniform fiber. These PVP/boehmite nanofibers can be used as good candidates for continuously preparing uniform and compact alumina nanofibers.

Study of Thermal Decomposition and Kinetics of Biomass/Swill-Cooked Dirty Oil Blends during Co-Pyrolysis

2011 ◽  
Vol 347-353 ◽  
pp. 2684-2687
Author(s):  
Yu Wang ◽  
Wen Chao Ma ◽  
Guan Yi Chen
Keyword(s):  
Activation Energy ◽  
Inert Atmosphere ◽  
Thermal Gravimetric ◽  
Kinetics Analysis ◽  
Order Model ◽  
First Order ◽  
Oil Blends ◽  
Thermal Gravimetric Analyzer ◽  
Kinetics Of ◽  
Synergistic Relationship

This paper studied the co-pyrolysis behavior of crop straw and swill-cooked dirty oil (≈ 2:1 ratio by weight) at 10, 30, 50K/min, in dynamic thermal gravimetric analyzer (TGA) under inert atmosphere, from 303K to 973K. The kinetic parameters were calculated using the method of Ozawa-Flynn-Wall, and mechanism was hypothesized as first-order model. The results showed that the dirty oil led degradation temperatures to slide towards higher slightly, meanwhile broadened the temperature interval of decomposition. However, the presence of dirty oil had little impact on activation energy. These findings indicated a significant synergistic relationship between straw and dirty oil, and it was practicable for co-pyrolysis from the viewpoint of thermal and kinetics analysis.

Removal of Etyhl Orange Dye using Waste Eggshell

2013 ◽  
Vol 64 (1) ◽  
Author(s):  
Norzita Ngadi ◽  
Wan Nur Shahida Wan Jusoh
Keyword(s):  
Dye Removal ◽  
Adsorption Process ◽  
Low Cost ◽  
Ph Effect ◽  
Freundlich Isotherm ◽  
Raw Material ◽  
Thermal Gravimetric ◽  
Acidic Solutions ◽  
Thermal Gravimetric Analyzer ◽  
Calcined Temperature

In this study, waste eggshells were used as a low cost raw material to remove ethyl orange dye in aqueous solution. The waste eggshells were calcined at temperatures of 600, 700, 800 and 900°C in the furnace for 2 h. Further, the calcined waste eggshells were treated chemically using 2 M of potassium carbonate. The calcined waste eggshells were characterized using Thermal Gravimetric Analyzer (TGA). The surface morphology of the calcined and uncalcined (i.e. natural) waste eggshell was obtained using Scanning electron microscope (SEM). The dye concentration was determined using UV-Vis spectrometry at wavelength of 474 nm. The results obtained showed that the percentage of dye removal using natural waste eggshell was 47.1%. For the calcined waste eggshell, the removal of dye decreased as the calcined temperature increased. For the pH effect, the acidic solutions give the highest percentage of dye removal which is 54 %. As expected, the higher the dose of waste eggshell used, the higher the dye removed. The highest removal of dye was obtained by using 2.0g of waste eggshell which is 48.2%. For the temperature effect, the adsorption of dye decreased as the temperature increased. The highest removal of dye was achieved at 50°C which is 63.0%. In this study, the adsorption process was found to fit the Freundlich isotherm than of the Langmuir isotherm. 

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