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PubMed | Chang Gung Memorial Hospital, National Tsing Hua University and Plastics Industry Development Center
Type: Journal Article | Journal: ACS applied materials & interfaces | Year: 2016

Heterogeneous Fenton reactions have been proven to be an effective and promising selective cancer cell treatment method. The key working mechanism for this method to achieve the critical therapeutic selectivity however remains unclear. In this study, we proposed and demonstrated for the first time the critical role played by catalase in realizing the therapeutic selectivity for the heterogeneous Fenton reaction-driven cancer cell treatment. The heterogeneous Fenton reaction, with the lattice ferric ions of the solid catalyst capable of converting H

Hsiao M.-C.,National Tsing Hua University | Liao S.-H.,National Tsing Hua University | Yen M.-Y.,National Tsing Hua University | Ma C.-C.M.,National Tsing Hua University | And 5 more authors.
Journal of Power Sources | Year: 2010

This study prepares novel metal mesh hybrid polymer composite bipolar plates for proton exchange membrane fuel cells (PEMFCs) via inserting a copper or aluminum mesh in polymer composites. The composition of polymer composites consists of 70 wt% graphite powder and 0-2 wt% modified multi-walled carbon nanotubes (m-MWCNTs). Results indicate that the in-plane electrical conductivity of m-MWCNTs/polymer composite bipolar plates increased from 156 S cm-1 (0 wt% MWCNT) to 643 S cm-1 (with 1 wt% MWCNT) (D.O.E. target >100 S cm-1). The bulk thermal conductivities of the copper and aluminum mesh hybrid polymer composite bipolar plates (abbreviated to Cu-HPBP and Al-HPBP) increase from 27.2 W m-1 K-1 to 30.0 W m-1 K-1 and 30.4 W m-1 K-1, respectively. The through-plane conductivities decrease from 37.8 S cm-1 to 36.7 S cm-1 for Cu-HPBP and 22.9 S cm-1 for Al-HPBP. Furthermore, the current and power densities of a single fuel cell using copper or aluminum mesh hybrid polymer composite bipolar plates are more stable than that of using neat polymer composite bipolar plates, especially in the ohmic overpotential region of the polarization curves of single fuel cell tests. The overall performance confirms that the metal mesh hybrid polymer composite bipolar plates prepared in this study are promising for PEMFC application. © 2009.

Teng C.-C.,National Tsing Hua University | Ma C.-C.M.,National Tsing Hua University | Cheng B.-D.,Plastics Industry Development Center | Shih Y.-F.,Chaoyang University of Technology | And 2 more authors.
Composites Part A: Applied Science and Manufacturing | Year: 2011

An effective approach was utilized to functionalize vapor-grown carbon nanofiber (VGCF) though covalent functionalization of polylactide (PLA) on the surface of the VGCF. 2-Hydroxyethyl methacrylate units were grafted onto VGCF through free radical polymerization and then reacted with l-lactic acid monomers by ring-opening polymerization. X-ray photoelectron spectroscopy, thermogravimetric analysis, and transmission electron microscopy were utilized to characterize the resulting PLA-g-VGCF. PLA/VGCF nanocomposites were prepared by melt compounding. Furthermore, effects of the interfacial attraction between PLA and VGCF on the mechanical properties and thermal conductivity were investigated. Consequently, the mechanical and thermal properties of integrated PLA-g-VGCF/PLA composites exhibited remarkable improvement, which were higher than those of pristine VGCF/PLA composites. © 2011 Elsevier Ltd. All rights reserved.

Liao S.-H.,National Tsing Hua University | Weng C.-C.,National Tsing Hua University | Yen C.-Y.,National Tsing Hua University | Hsiao M.-C.,National Tsing Hua University | And 6 more authors.
Journal of Power Sources | Year: 2010

Multiwalled carbon nanotubes (MWCNTs) are covalently modified with different molecular weights 400 and 2000 poly(oxyalkylene)-amine bearing the diglycidyl ether of bisphenol A (DGEBA) epoxy (POA400-DGEBA and POA2000-DGEBA) oligomers. The oxidized MWCNTs (MWCNTs-COOH) are converted to the acid chloride-functionalized MWCNTs, followed by the reaction with POA-DGEBAs to prepare the MWCNTs/POA400-DGEBA and MWCNTs/POA2000-DGEBA. FTIR, thermogravimetric analysis (TGA) and high resolution X-ray photoelectron spectra (XPS) reveal that the POA-DGEBAs are covalently attached to the surface of MWCNTs. The morphology of MWCNTs/POA-DGEBA is observed by TEM. The POA400-DGEBA coated on the MWCNTs is thicker and more uniform. However, the coating of POA2000-DGEBA on the MWCNTs shows a worm-like bulk substance and the MWCNT surface is bare. In addition, the flexural strength and the bulk electrical conductivity of the MWCNTs/polypropylene nanocomposite bipolar plates are measured 59% and 505% higher than those of the original composite bipolar plates by adding 8 phr of MWCNTs/POA400-DGEBA. The maximum current density and power density of the single cell test for the nanocomposite bipolar plate with 4 phr MWCNTs/POA400-DGEBA are 1.32 A cm -2 and 0.533 W cm -2, respectively. The overall performance confirms the functionalized MWCNTs/polypropylene nanocomposite bipolar plates prepared in this study are suitable for PEMFC application. © 2009.

Li J.H.,Plastics Industry Development Center
Annual Technical Conference - ANTEC, Conference Proceedings | Year: 2012

In this study, the aliphatic or aromatic isocyanates and poly-alcohols was used to synthesize polyurethane with shape memory function, which the polyol was derived from the biomass polylactic acid (PLA). The recycled PLA was degraded into the low molecular weight PLA (Mw 1,000) and the chain extension agent (1,4-butanediol, BDO) reaction was added to form biomass polyol. The analysis of Fourier transform infrared spectroscopy (FTIR) and Gel permeation chromatography (GPC) were proved the synthesis of polyol. The recovery ratio of shape memory and mechanical properties of polyurethane were improved significantly due to the urea structure, the biomass polyurethane with shape memory could be increased up to 95% of recovery ratio. Different isocyanate (hexamethylene diisocyanate, HDI, or 4,4-diphenylmethene diisocyanate, MDI) were compared and found that the functional group of aromatic was better than that of aliphatic in the synthesis of polyurethane with shape memory behavior.

Plastics Industry Development Center | Date: 2015-07-01

A producing method of an aging delaying material for fruits or vegetables having steps of: adding and blending a silicon material (10), the silicon material (10) has porous structures or layer structures (13); gradually adding an ethylene reducing material (20) and water or solvent in the silicon material (10) during blending; and gradually removing the water or the solvent during blending until the water or the solvent being partially removed from the silicon material (10) and the ethylene reducing material (20) to form a dry mixing powder which is able to postpone fruits or vegetables become over mature.

Plastics Industry Development Center | Date: 2014-05-21

A producing method for fruit and vegetable fresh packing material having steps of (1) mixing porous granules, organic material and water, (2) blending the porous granules, organic material and water until water removed to form dry mixing powder, (3) mixing the dry powder with plastic matrix material and form as plastic granules. Thus, a bag or a packing material may be produced with using the plastic granules by standard plastic producing methods, the bag or packing material with outstanding fruit preservation ability may be produced by a very simple way.

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