Roosting activities of the Rainbow Lory (Trichoglossus haematodus) at Wau, Papua New Guinea

Volume: 11Start Page: 303End Page: 31

Synthese und Charakterisierung von Butadien/Ethen/Propen

Butadiene-C2H4-propene terpolymers are synthesized by Ziegler-Natta polymn. Variation of the amts. of propene and C2H4 leads to products with propene contents 5-30 mol% (referring to monomeric units) in the polymer. These polymers are terpolymers with alternating units of butadiene-C2H4 and butadiene-propene sequences as shown by means of NMR investigations. The degree of crystallinity can be varied (10-51 mol%) by different incorporation of propene into the terpolymer (X-ray diffraction). The thermal behavior is characterized using DSC investigations. Depending on the propene content in the terpolymer the degree of crystallinity significantly influences the parameters of the glass transition and the melting process. [on SciFinder (R)

Verfahrensentwicklung zum Polymerrecycling durch "Selektive Extraktion"

Exemplarisch für die Entwicklung eines qualitätsoptimierten Kunststoffrecyclings werden gestufte (ökonomische) F&E-Arbeiten am Fraunhofer-IVV dargestellt. Ein wesentlicher Entwicklungsschwerpunkt besteht in der Reinigung des Materials auf molekularer Ebene unter Abtrennung der qualitätsmindernden Störstoffe und unter Erhalt der primären Polymermorphologie und -funktionalität

Liquid-crystalline side chain block copolymers - synthesis, morphology and LC behavior

Side-chain liq.-cryst. 2-hydroxyethyl methacrylate-styrene diblock copolymer (I) was prepd. by polymn. of 2-(trimethylsiloxy)ethyl methacrylate with styrene with further treatment with cholesteryl chloroformate. Morphol. and phase behavior of I were investigated. [on SciFinder (R)

DSC-Untersuchungen an Butadien/Olefin-CO-und Terpolymeren sowie an ihren Hydrier-Produkten.

Poly(butadiene-alt-1-olefin) copolymers and poly[(butadiene-alt-ethene)-co-(butadiene-alt-1-olefin)] terpolymers, and the hydrogenated products too, has been characterized with the aid of differential scanning calorimetry (DSC). Both the glass transition and the melting behaviour of the partial crystallized products has been investigated. From the peak area the degree of crystalunity has been calculated in a first approximation. The results allow to draw conclusions about the crystallization behaviour in relation to the number and length of the side chains and about the course of the synthesis in question