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Inhalt / Contents
Rheologie von Tensidsystemen / The Rheology of Tenside Systems
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Untersuchung der Stromung von Polymerschmelzen in Dusen / Investigations of Die Entry Flows of Polymer Melts
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Zweiter Rheology-Preis / Second Rheology Prize
Fachbücher / Reviews
Mit Rheologie zu besseren Strassen / Better Roads Through Rheology
Polymerization of Ethylene Oxide with Alkyllithium Compounds and the Phosphazene Base “tBuP4”
Well‐defined poly(ethylene oxide)s with low polydispersities are formed in the anionic polymerization of ethylene oxide with an alkyllithium/phosphazene base initiator system. The base can be regarded as a cryptand for Li + ions. The equilibrium between complexed alkoxide ion pairs and reactive free anions is thus shi…
Electrochemistry of Conductive Polymers: XX. Early Stages of Aniline Polymerization Studied by Spectroelectrochemical and Rotating Ring Disk Electrode Techniques
Early stages of aniline oxidation have been studied employing spectroelectrochemical and rotating ring disk electrode experiments in solutions of low (2 m M ) and high (100 m M ) aniline concentrations in . Results indicate that a large amount of the tail‐to‐tail dimer, benzidine, is produced in the initial stage of a…
Characterization of the Ageing of Plasma-deposited Polymer Films: Global Analysis of X-ray Photoelectron Spectroscopy Data
A protocol for global analysis of x-ray photoelectron spectra of plasma-deposited polymer films is presented. These materials are difficult to analyse because of the multitude of different chemical groups present. The combination of different primary and secondary binding energy shifts results in relatively broad, fea…
Recent Advances in Ceramics for Dentistry
For the last ten years, the application of high-technology processes to dental ceramics allowed for the development of new materials such as heat-pressed, injection-molded, and slip-cast ceramics and glass-ceramics. The purpose of the present paper is to review advances in new materials and processes available for mak…
Why Does Halloysite Roll?—A New Model
Abstract A model is presented to explain why tubular halloysite rolls in preference to tetrahedral rotation to correct misfit of the octahedral and tetrahedral sheets. It is shown that the rolling mechanism operates as it encounters significantly less resistance from Si-Si repulsion in comparison to tetrahedral rotati…
Electrochromic Properties of Cobalt Oxide Thin Films Prepared by Chemical Vapor Deposition
Electrochromic cobalt oxide thin films were prepared by chemical vapor deposition. The source material was cobalt(II) acetylacetonate. Tricobalto tetraoxide thin films were obtained at a substrate temperature 250°C. Oxidation and reduction of the films in a 0.1 M KOH solution resulted in changes in optical absorption.…
Modification of poly(L‐lactides) by blending: mechanical and hydrolytic behavior
Abstract Two different poly( L ‐lactides) (PLLAb and PLLAa) were blended with poly(ε‐caprolactone) (PCL) and an elastic poly(ε‐caprolactone/L‐lactide) P(CL/L‐LA) copolymer to modify the mechanical properties of PLLA. Blends of both PLLAs with 20 wt.‐% of PCL were prepared. PLLAa was blended with 20 wt.‐% of P(CL/L‐LA)…