Antioxidants of Rubbers

Phase transitions of nematic rubbers

– Single-crystal nematic elastomers undergo a transition from a strongly ordered phase N to an “isotropic” phase I. We show that: a) samples produced under tension by the Finkelmann procedure are intrinsically anisotropic and should show a small (temperaturedependent) birefringence in the high-temperature I phase; b) for the I → N transition via cooling there is a spinodal limit but for the N →...

Measurement of Densities · of Synthetic , Rubbers

A method has been lieycloped f.or prepari~lg specimens of I'\ynthetic rubber jn a form suitable for precise meas'urements of t he density. 1'he rubber 'is outgassed in a vacuum chamber, and while still under vacuum is molded into' a sheet abOu E }16 in. ' (1.6 mm) thick . . Specimens 'weighing between 1 and 2 g each are cut from this sheet 'and are, erpployed for the measurement of the dens~t.Y...

Biodegradation of Natural and Synthetic Rubbers

Alexandros Linos1, Alexander Steinbüchel2 1 Institut für Mikrobiologie, Westfälische Wilhelms-Universität Münster, Corrensstraûe 3, 48149 Münster, Germany; Tel. :‡49-251-8339821; Fax:‡49-251-8338388; E-mail : [email protected] 2 Institut für Mikrobiologie, Westfälische Wilhelms-Universität Münster, Corrensstraûe 3, 48149 Münster, Germany; Tel. :‡49-251-8339821; Fax:‡49-251-8338388; E-mail ...

A New Family of Styrene/Diene Rubbers

Characterization of viscoelastic properties Of PDMS silicon rubbers

.................................................................................................................................................................. 2 Introduction ............................................................................................................................................................ 2 Materials and Methods .........................................