• Bulletin of the Korean Chemical Society
• /
• v.29 no.2
• /
• pp.303-304
• /
• 2008

• Macromolecular Research
• /
• v.17 no.11
• /
• pp.886-893
• /
• 2009

Surface modifications using a radio frequency Ar-plasma treatment were performed on a polypropylene (PP) blend used for automotive bumper fascia. The surface characterization and morphology were examined. With increasing aging time, there was an increase in wettability, oxygen containing polar functional groups (i.e., C-O, C=O and O-C=O) due to oxidation, the amount of tale, and bearing depth and roughness on the PP surface, while there was a decrease in the number of hydrocarbon groups (i.e., C-C and C-H). AFM indicated that the Ar-plasma-treatment on a PP blend surface transforms the wholly annular surface into a locally dimpled surface, leading to an improvement in wettability. SEM showed that the PP layer observed in the non-plasma-treated sample was removed after the Ar-plasma treatment and the rubber particles were exposed to the surface. The observed surface characterization and morphologies are responsible for the improved wettability and interfacial adhesion between the PP blend substrate and bumper coating layers.

• Bulletin of the Korean Chemical Society
• /
• v.29 no.6
• /
• pp.1277-1279
• /
• 2008

• Bulletin of the Korean Chemical Society
• /
• v.29 no.1
• /
• pp.249-251
• /
• 2008

• 한국정보디스플레이학회:학술대회논문집
• /
• 2003.07a
• /
• pp.897-900
• /
• 2003

Chemical vapor condensation (CVC) reactor was investigated for the deposition of Parylene-N thin films as the passivation layer for organic light emitting diodes (OLEDs). Several gas inlet manifold designs were tested to improve the deposition rate and its uniformity, and it was found that proper inlet design is crucial to get the desired film properties. Process characterization was also performed with the modified inlets to optimize the process variables.

• Bulletin of the Korean Chemical Society
• /
• v.15 no.12
• /
• pp.1134-1136
• /
• 1994

• Bulletin of the Korean Chemical Society
• /
• v.29 no.6
• /
• pp.1101-1102
• /
• 2008

• Bulletin of the Korean Chemical Society
• /
• v.14 no.3
• /
• pp.398-403
• /
• 1993

• Bulletin of the Korean Chemical Society
• /
• v.10 no.6
• /
• pp.606-608
• /
• 1989

• Journal of Microbiology and Biotechnology
• /
• v.19 no.11
• /
• pp.1342-1347
• /
• 2009

We have isolated endophytic fungi from the Indian yew tree, Taxus baccata, and then screened for taxol production. Out of the 40 fungal cultures screened, one fungus Gliocladium sp. was found to produce taxol and 10-DABIII (10-deacetyl baccatin III). These compounds were purified by TLC and HPLC and characterized using UV-spectroscopy, ESI-MS, MS/MS, and proton NMR. One liter of Gliocladium sp. culture yielded $10\;{\mu}g$ of taxol and $65\;{\mu}g$ of 10-DABIII. The purified taxol from the fungus showed cytotoxicity towards cancer lines HL-60 (leukemia), A431 (epidermal carcinoma), and MCF-7 (breast cancer).