Concept

Petrochemical

Related publications (75)

Dendritic and hyperbranched polyamides

Harm-Anton Klok, Zuzana Kadlecova, Markus Scholl

This article discusses the synthesis and properties of dendritic and hyperbranched polyamides. The first part of the article focuses on peptide dendrimers and starts with providing an overview of the synthetic pathways that have been used to prepare dendri ...

2009

Effect of cell media on polymer coated superparamagnetic iron oxide nanoparticles (SPIONs): Colloidal stability, cytotoxicity, and cellular uptake studies

Heinrich Hofmann, Jatuporn Salaklang, Alke Fink, Benedikt Steitz, Andrija Finka

The influence of the composition of the polymer coated polyvinyl alcohol (PVA), vinyl alcohol/vinyl amine copolymer (A-PVA) and polyethylenimine (PEI) coated superparamagnetic iron oxide nanoparticles (SPIONs) on the colloidal stability, cytotoxicity and c ...

2008

Silicon straight tube fluid density sensor

Mohammad Najmzadeh

In this paper, a micromachined silicon straight tube is tested as a fluid density sensor. In comparison with other density measurement techniques, the use of micromachined tubes require small sample volumes and allows continuous monitoring of the fluid den ...

2007

Time-intensity transformation and internal stress in UV-curable hyperbranched acrylates

Yves Leterrier, Lars Schmidt

The photocuring of three different highly functional acrylates—Di-pentaerythritol penta/hexaacrylate (DPHA) and two hyperbranched molecules (HBP), one with a stiff polyester and one with a more flexible polyether structure—was investigated by means of phot ...

Springer-Verlag2007

Durability of aminosilane-silica hybrid gas-barrier coatings on polymers

Yves Leterrier, Bandeep Singh, Gil Rochat

Aminosilane solutions with pH equal to 8 and to 11 were applied and cured on SiO2 coated poly(ethylene terephthalate) (PET) films. The permeability of the silane-silica hybrid coating on PET was reduced twofold compared to that of the SiO2/PET film, at sol ...

2007

A fast low-temperature micromolding process for hydrophilic microfluidic devices using UV-curable acrylated hyperbranched polymers

Yves Leterrier, Lars Schmidt

A novel UV-curable low-stress hyperbranched polymer (HBP) micromolding process is presented for the fast and low-temperature fabrication of hydrophilic microfluidic devices. Process, material and surface properties of the acrylated polyether HBP are also c ...

2007

Water-soluble, unimolecular containers based on amphiphilic multiarm star block copolymers

Harm-Anton Klok, John Christopher Plummer, Céline Ternat

A new class of water-soluble, amphiphilic star block copolymers with a large number of arms was prepared by sequential atom transfer radical polymerization (ATRP) of n-butyl methacrylate (BMA) and poly-(ethylene glycol) methyl ether methacrylate (PEGMA). A ...

2006

Stress controlled gas-barrier oxide coatings on semi-crystalline polymers

Yves Leterrier, Gil Rochat

Thin silicon oxide (SiOx) barrier coatings formed by plasma enhanced chemical vapor deposition on poly(ethylene terephthalate) (PET) substrates were subjected to post-deposition annealing treatments in the temperature range for orientation relaxation of th ...

2005

Biological-synthetic hybrid block copolymers: Combining the best from two worlds

Harm-Anton Klok

Although biopolymers and synthetic polymers share many common features, each of these two classes of materials is also characterized by a distinct and very specific set of advantages and disadvantages. Combining biopolymer elements with synthetic polymers ...

2005

Partial oxidation of toluene to benzaldehyde and benzoic acid over model vanadia/titania catalysts: Role of vanadia species

Lioubov Kiwi, Fabio Rainone

Pure and K-doped vanadia/titania prepared by different methods have been studied in order to elucidate the role of vanadia species (monomeric, polymeric, bulk) in catalytic toluene partial oxidation. The ratio of different vanadia species was controlled by ...

2004

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