Results from research groups

Abstract This article reviews results from our group of the synthesis and characterization of diblock copolymer brushes. Results from the literature are also covered. We report a wide variety of diblock compositions and compare the miscibility of the two blocks with the tendency to rearrange in response to block-selective solvents. Also, we describe the types of polymerization methods that can be utilized to prepare diblock copolymer brushes. We have compared the molecular weight of free polymer and the polymer brush based on results from our laboratory and other research groups we have concluded that the molecular weight of the free polymer and that of degrafted polymer brushes is similar. 

In this paper, a number of reflections and conclusions are formulated which result from research work on functionally graded materials as performed by a small group at the Swiss Federal Institute of Technology at Lausanne, mainly in the period 1988 to 1995. It is hoped that these observations, after critical review by the "FGM community", may contribute to the planning and accomplishment of future research activities within this field. In order to explain these ideas, it is proposed to start with a retrospect. 

The selection of the most appropriate insecticide is dependant upon a large number of factors including cost, stability in the preservative formulation, required rate of action and stability in the commodity to be protected. No finite recommendations can be made and ultimate selection will result from research into the performance and permanence of the insecticide in both laboratory and field tests. The most common groups of insecticides used in wood preservation today can be categorized as follows ... 

The second unit of the tutorial is dedicated to run-time support for multi-device environments. Issues and solutions for automatic transformation from desktop interfaces to different platforms will be first discussed, showing how presentation, navigation and content can be transformed and the usability issues to address in this process. The tutorial provides examples of results that can be obtained by tools provided by main software companies such as Google, Nokia, Microsoft, Opera along with research results from various groups (including the instructor s group). 

The processiag costs associated with separation and corrosion are stiU significant ia the low pressure process for the process to be economical, the efficiency of recovery and recycle of the rhodium must be very high. Consequently, researchers have continued to seek new ways to faciUtate the separation and confine the corrosion. Extensive research was done with rhodium phosphine complexes bonded to soHd supports, but the resulting catalysts were not sufficiently stable, as rhodium was leached iato the product solution (27,28). A mote successful solution to the engineering problem resulted from the apphcation of a two-phase Hquid-Hquid process (29). The catalyst is synthesized with polar -SO Na groups on the phenyl rings of the triphenylphosphine. 

Beckman, Brennecke, and their research groups were the first to realize that the combination of SCCO2 and an ionic liquid can offer special advantages. They observed that, although SCCO2 is surprisingly soluble in some ionic liquids, the reverse is not the case, with no detectable ionic liquid solubilization in the CO2 phase. On the basis of these results they described a method to remove naphthalene quantitatively from the ionic liquid [BMIM][PFg] by extraction with SCCO2 [5]. Sub-... 

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