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A star polymer with a γ-CD core and PS arms (CD-star) is used to partially compatibilize blends of the immiscible polymers polystyrene (PS) and poly(dimethylsiloxane) (PDMS). The mechanism of compatibilization is threading of the CD core by PDMS and subsequent solubilization in the PS matrix facilitated by the star arms. Films cast from clear solutions in chloroform exhibit large wispy PDMS domains,...
A star polymer with a γ–CD core and PS arms is used to compatibilize blends of the immiscible polymers PS and PDMS. The mechanism of compatibilization is threading of the CD core by PDMS and subsequent solubilization in the PS matrix facilitated by the star arms. Spun-cast films of this blend are examined with optical microscopy, scanning electron microscopy and atomic force microscopy. Blends without...
Solutions of polystyrene and poly(dimethyl siloxane) in chloroform are compatibilized by the addition of a small amount of a star polymer consisting of a γ-cyclodextrin core and polystyrene arms. Compatibilization is visually observed when turbid PDMS/PS emulsions become clear upon addition of the CD-star molecule. The mechanism of compatibilization involves threading of the CD-core by PDMS and solubilization...
A new sensor was developed for simultaneous detection of cadmium (Cd 2+ ), copper (Cu 2+ ), and lead (Pb 2+ ), based on the voltammetric response at a carbon paste electrode modified with carbamoylphosphonic acid (acetamide phosphonic acid) self-assembled monolayer (SAM) on mesoporous silica (Ac-Phos SAMMS). The adsorptive stripping voltammetry (AdSV) technique...
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