DSpace Home
→
Faculty and Institute
→
Petroleum and Petrochemical College - Petro
→
Petro - Theses
→
Recent submissions

Petro - Theses: Recent submissions

Now showing items 1081-1100 of 1415

Synthesis and characterization of polybenzoxazine-clay nanocomposite

Phairat Phiriyawirut (Chulalongkorn University, 1999)

A new polymer-silicate layer nanocomposite has been synthesized consisting of dispersed two-dimensional layers of organically modified montmorillonite (OMOM) within polybenzoxazine matrix proven by TG, XRD, TEM and FTIR. ...
Synthesis and application of structurally controlled benzoxazine as a host-guest compound

Pavena Techakamolsuk (Chulalongkorn University, 1999)

Three types of benzoxazine dimer derivatives were successfully prepared, i.e., 2-hydroxyl benzyl type (4), (5), and (6), 2-benzoyl benzyl type (7), (9), and (11), and 2-acetyl benzyl type (8), (10), and (12). In the case ...
Effect of molecular weight and compatibilizer on miscibility and properties of LLDPE/NR blends

Parichart Limsila (Chulalongkorn University, 1999)

The effect of molecular weight (entropic mixing) and compatibilizer (enthalpic mixing) on linear low-density polyethylene (LLDPE) and natural rubber (NR) blends were studied. Maleic anhydride (MA) was added to the LLDPE/NR ...
A Novel ion extraction materials derived from molecular recognition properties of silica surface modified benzoxazine local structure

Nungruethai Yoswathananont (Chulalongkorn University, 1999)

A series of silylbenzoxazines with different bulky group on benzene ring, i.e., 3-triethoxysilyl-n-propyl-3,4-dihydro-2H-1,3-benzoxazine (1), 3-triethoxysilyl-n-propyl-3,4-dihydo-6-methyl-2H-1,3-benzoxazine(2), and ...
Oscillatory shear induced droplet deformation and breakup in immiscible polymer blends

Vitsarut Janpaen (Chulalongkorn University, 2005)

Droplets in polybutadiene/polydimethylsiloxane blends under oscillatory shear flow were observed using an optical flow cell. The apparent major axes, the minor axes, and the deformation of the droplets were measured from ...
Rheological behavior for unfilled & filled natural rubber (NR) and linear low density polyethylene (LLDPE) blends with maleic anhydride (MA) as a compatibilizer

Kunjana Intharuksa (Chulalongkorn University, 1999)

The rheological behavior of linear low density polyethylene (LLDPE), natural rubber (NR) and their blends were studied by a cone-and-plate rheometer in dynamic mode at a frequency ranges from 0.1-100 rad/sec and a capillary ...
Catalyst development for methane reforming with CO2

Krit Punburananon (Chulalongkorn University, 1999)

The reforming of methane with CO₂ produces synthesis gas with high CO/H₂ ratio, which is suitable to produce higher hydrocarbons and oxygenated compounds by Fischer-Tropsch synthesis. In this study, the sol-gel technique, ...
Effect of pore size on cationic surfactant adsorption isotherms of molecular sieve MCM-41

Jintana Junsirivilaigul (Chulalongkorn University, 1999)

The new family of silica-based mesoporous materials designated as MCM-41 is known to be formed using organic- guest species to act as void filters, structure – directing agents and templates. In this study, MCM-41 materials ...
Hydrogen production by autothermal system

Janit Pongpuak (Chulalongkorn University, 1999)

The hydrogen production by autothermal system of iso-octane over NiCe/Al₂O₃ and NiCr/Al₂O₃ prepared by a co-impregnation method has been investigated under various process conditions. The effects of steam/carbon ratio, ...
Ethylene polymerization using metallocene catalysts : cocatalyst systems

Chalermphol Wongdithnan (Chulalongkorn University, 1999)

Ethylene polymerization by bis(cyclopentadienyl) zirconium dichloride (Cp2ZrCl2)-tris(pentafluorophenyl) borane (B(C6F5)3) catalyst with trimethylaluminum (TMA) has been investigated. The cationic-like active species is ...
A New approach for the synthesis of advanced polymers by stereochemically controlled structure using topochemical polymerization of inclusion compound

Attawut Kumkrong (Chulalongkorn University, 1999)

Inclusion compound of deoxycholic acid (DCA) host molecule and vinyl chloride monomer (VCM) guest molecule is prepared from solvent free DCA crystal via a guest insertion technique. Solvent free DCA inclusion compound is ...
Effect of surfactant adsorption on multi-walled carbon nanotubes dispersion

Wipawan Mattavakul (Chulalongkorn University, 2012)

Carbon nanotubes (CNTs) have attracted particular concern of researchers throughout the world due to their exceptional electronic, thermal, optical and mechanical properties for many applications. To obtain advantages of ...
Solid-polymer mixed matrix membranes for gas separation: polyimide and inorganic solid materials

Kyu Kyu Myint (Chulalongkorn University, 2015)

Mixed matrix membranes have presented an interesting approach to improve both selectivity and permeability which are the basic separation properties of the membrane. In this study, MMMs were fabricated to investigate the ...
Studying asphaltene instability by capillary deposition

Vipawee Limsakoune (Chulalongkorn University, 2012)

Asphaltene deposition can occur during oil production and processing. It is necessary to understand the mechanism of asphaltene deposition in order to improve prediction and prevention of deposits. The capillary deposition ...
Development of the silver nanoparticle loaded gelatin and silk fibroin hydrogel pads for antimicrobial wound dressing applications

Vichayarat Rattanaruengsrikul (Chulalongkorn University, 2012)

Gelatin hydrogels and silk fibroin (SF) films were prepared from gelatin and SF solutions containing different amounts of AgNO3 by a solvent-casting technique The AgNO3-containing gelatin and SF solutions were aged under ...
Hydrogen production from oxidative steam reforming of methanol over Au/CeO2-Fe2O3 catalysts

Umpawan Satitthai (Chulalongkorn University, 2012)

Oxidative steam reforming of methanol (OSRM) over a Fu/CeO2-Fe2O3 catalyst prepared by a deposition-precipitation (DP) method was investigated to produce hydrogen for proton exchange membrane fuel cell (PEMFC) applications. ...
Indium-containing ZSM-5 catalyst for methylation of benzene : effect of treatment and reaction conditions

Trisik Srisayan (Chulalongkorn University, 2012)

Toluene production through the reaction between benzene and methane has been studied by many research groups. Thermodynamic limitation is the main obstruction to achieve high conversion and yield. Since methane is highly ...
Hydrogen and methane production from alcohol wastewater by upflow anaerobic sludge blanket reactors

Thipsalin Poontaweegeratigarn (Chulalongkorn University, 2012)

In this work, biohydrogen and methane production from alcohol wastewater using upflow anaerobic sludge blanket reactors (UASB), with a volume of 4 L, was investigated to find optimum conditions. For biohydrogen production, ...
Etherification of glycerol catalyzed by BaO and CaO on mesoporous support

Suragarn Klomkao (Chulalongkorn University, 2012)

With the increase of biodiesel utilization, glycerol has been expected to be oversupplied, which has caused a dramatic drop in the price of glycerol. Hence, it is attractive to increase the value of glycerol by converting ...
Cellulose nanocomposite as an effective substrate for OLEDs

Sarute Ummartyotin (Chulalongkorn University, 2012)

Nanocomposite film composed of bacterial cellulose (10-50 wt%) and polyurethane (PU) based resin was fabricated and utilized as a substrate for flexible organic light emitting diode (OLED) display. The performance of the ...

Now showing items 1081-1100 of 1415

Search DSpace

Advanced Search

Browse

All of DSpace
This Collection

Recently added

Petro - Theses: Recent submissions

Search DSpace

Browse

All of DSpace

This Collection

My Account