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Petro - Theses: Recent submissions

Now showing items 1201-1220 of 1415

Development of NaAlH4 and carbon-based materials for hydrogen storage

Yindee Suttisawat (Chulalongkorn University, 2008)

Hydrogen storage in a solid state material has been considered as a more suitable way for a fuel cell driven car as compared with compressed hydrogen and liquid hydrogen storage. Metal hydrides seem to be the promising ...
Development of poly(p-phenylene vinylene) for actuator and controlled drug delivery applications

Sumonman Niamlang (Chulalongkorn University, 2008)

This study evaluated and characterized the use of poly (p-phenylene vinylene) (PPV) as the electroactive polymer and in the controlled drug delivery application. Polydimethylsiloxane(PDMS) gel and PPV/PDMS blends were ...
Surfactant recovery from water using a multistage foam fractionator

Savanit Boonyasuwat (Chulalongkorn University, 2008)

The purpose of this research was to investigate the recovery of surfactants from water using a multistage form fractionation process. The study was divided into two parts. In the first part, the effects of various operational ...
Development on silk fibroin-based biomaterials for tissue engineering applications

Panya Wongpanit (Chulalongkorn University, 2008)

The present dissertation was proposed two possible approaches to develop silk fibroin-based biomaterials in the context of tissue engineering, i.e. (i) enhancement of the biological and physical functions of silk fibroin ...
Nanoclay/polypropylene nanocomposite dyed fiber

Nattaporn Aimampaiwong (Chulalongkorn University, 2008)

Nowadays, polypropylene was widely used in fiber industry because of its advantages such as low density, good chemical resistance, easy processibility, good surface resistance, strain resistance, and especially it has low ...
Development of novel non-aqueous thermally stable membranes for the use in polymer electrolyte membrane fuel cell (PEMFC)

Manita Jithunsa (Chulalongkorn University, 2008)

The present project stands on a viewpoint of a synthesized polymeric membrane material having a definite functional group, which an effective proton-transferring pathway is possible for PEM. Compared with water molecule, ...
Asphaltene precipitation studies : modeling, validation, and prevention

Kriangkrai Kraiwattanawong (Chulalongkorn University, 2008)

Asphaltene precipitation and deposition caused by changes in composition, pressure, and temperature during oil production have a huge economic impact in the oil industry because of production losses and high remediation ...
Ethylene polymerization by Cp2 ZrCl2-B(C6F5)3-TEA catalyst system

Nattaya Punrattanasin (Chulalongkorn University, 2001)

A quantitative study was carried out on the homogeneous zirconocene dichloride / tris(pentafluorophenyl)borane / triethylalum inum (Cp2ZrCl2-B (C6F5)3-TEA) catalyst system in ethylene polymerization. The effect of zirconocene ...
Effect of print screen ink on properties of re-extruded high density polyethylene (HDPE)

Chuthamas Nandidarbha (Chulalongkorn University, 2001)

HDPE is widely used and its consumption has increased continually: this translates into a large amount of solid waste produced. Recycling of such a waste has been perceived as a means for dealing with this environmental ...
Resistivity of conductive polymer-coated fabric

Porntip Lekpittaya (Chulalongkorn University, 2003)

Preparation of conductive polymer-coated fabrics was carried out by admicellar polymerization with and without addition of salt. By this method, thin layers of conducting polymers, namely polyaniline, polypyrrole, polythiophene ...
Surfactant adsorption on plastic surfaces

Pira Laohacharoensombat (Chulalongkorn University, 2003)

Surfactant adsorption on a hydrophobic surface plays an important role in many industrial applications, for example detergency, adhesion, and wetting. In order to effectively utilize the surfactant, the surfactant adsorption ...
Applications of pinch technology (heat exchanger network design and process heat integration)

Manoch Limsukhon (Chulalongkorn University, 2003)

Gas separation process is one of the cryogenic processes. The operating expenditures for this process are dominated by the refrigerant cost. To reduce the cost, the energy saving is needed. Pinch technology is one of the ...
Microemulsion formation by mixed anionic and cationic surfactants

Manisa Ubolsuk (Chulalongkorn University, 2003)
Methane conversion to synthesis gas in corona discharge

Korada Supat (Chulalongkorn University, 2003)

Synthesis gas is a versatile feedstock for many synthesis processes. There are several conventional reactions to produce synthesis gas i.e. steam reforming, partial oxidation, and carbon dioxide reforming but these catalytic ...
Dissolution kinetics of analcime in hydrochloric acid

Phan-on Wattanaparadorn (Chulalongkorn University, 2002)

Acidization of petroleum reservoirs has been used for many years to increase the productivity of petroleum wells. In a number of offshore oil wells, the formation sands are extensively cemented with analcime. Recently, ...
Reduction of reaction time of PMMA sheet casting process

Parinya Wanwanichai (Chulalongkorn University, 2002)

One-Step and two-step isothermal sheet casting processes, using water and hot air systems, were compared for the production of poly(methyl methacrylate) (PMMA) sheets. The main objectives were 1) to assess the optimal ...
Correlation of sol-gel processing parameters with microstructure and properties of ceramic product

Nopporn Thanabodeekij (Chulalongkorn University, 2002)

Very high purity MgAI2O4 spinel precursor can be prepared via the low temperature process called “Oxide One Pot Synthesis Process (OOPS)”. Sol-gel processing of such precursors offers the opportunity to prepare spinels ...
Zeolite synthesis directly from alumatrane and silatrane via sol-gel process and microwave technique

Mathavee Sathupunya (Chulalongkorn University, 2002)

Zeolites or crystalline aluminosilicate are successfully synthesized directly from alumatran and silatrane by sol-gel process using metal hydroxide: lithium, sodium or potassium hydroxide as hydrolytic agent and hydrothermal ...
Development of polyaniline/zeolite a composite as a carbonmonoxide sensor

Chintana Chuapradit (Chulalongkorn University, 2002)

Polyaniline (PANI) is one of the most promising conductive polymers. Despite all the advantages of polyaniline, such as its ease of synthesis, polyaniline has low selectivity when it is used as a gas sensor. Three types ...
Applications of pinch technology for energy conservation

Anurut Buaurai (Chulalongkorn University, 2002)

The natural gas separation process is an extremely high energy-consuming process. It consists of distillation units and cryogenic heat exchangers requiring refrigerant. This leads to high operating costs. This study focuses ...

Now showing items 1201-1220 of 1415

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