Ruthenium tetroxide as a staining agent for transmission electron microscopy of polyamide-polyether blends and block copolymers
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چکیده
منابع مشابه
Synthesis of blood compatible polyamide block copolymers.
Blood compatibility of polyamides has been improved by introducing amido-amine groups in polymer backbone. Polyamide block-copolymer are synthesized by reacting amine end-capped polyamides with N,N'-methylene-bisacrylamide. Polyamide block-copolymers, thus produced found to have the ability of absorbing heparin. Heparinized polyamide block-copolymers have shown significant improvement in blood ...
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We report an effective strategy for the synthesis of semi-crystalline block copolyethers with well-defined architecture and stereochemistry. As an exemplary system, triblock copolymers containing either atactic (racemic) or isotactic (R or S) poly(propylene oxide) end blocks with a central poly(ethylene oxide) mid-block were prepared by anionic ring-opening procedures. Stereochemical control wa...
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Turbine oil plays an important role in supporting optimal steam turbine performance. Some additives in turbine oil can cause emulsification when the oil is contaminated by water, so demulsibility is a very important property of the steam turbine oil. In order to improve the demulsibility of steam turbine oil, two kinds of polyether-silicone comb copolymers are synthesized and used as steam turb...
متن کاملSection Staining for Electron Microscopy
Epon epoxy resin was introduced as an embedding medium for biological electron microscopy largely through the independent efforts of Finck (1) and Luft (2). The usual recipe involves three components: Epon 812 resin (Epikote 812, in England), an anhydride hardener, and an accelerator such as DMP-30. Since the combination of Epon with dodecenyl succinic anhydride (DDSA) was thought to produce a ...
متن کاملThermodynamics of ion-containing polymer blends and block copolymers.
We develop a theory for the thermodynamics of ion-containing polymer blends and diblock copolymers, taking polyethylene oxide (PEO), polystyrene and lithium salts as an example. We account for the tight binding of Li^{+} ions to the PEO, the preferential solvation energy of anions in the PEO domain, the translational entropy of anions, and the ion-pair equilibrium between EO-complexed Li^{+} an...
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ژورنال
عنوان ژورنال: Journal of Polymer Science Part B: Polymer Physics
سال: 1987
ISSN: 0887-6266,1099-0488
DOI: 10.1002/polb.1987.090250417