Controlled release from recombinant polymers

Hydrophilic Natural Polymers for Sustained-controlled Release of Calcium Hydroxide

Calcium Hydroxide (CH) is commonly employed as intracanal medicament in endodontics. In order to maximize its therapeutic effects, it is essential to develop new approaches for preparing the controlled drug release systems which, in turn, facilities the dissociation of CH into calcium and hydroxyl ions. This work studies the sustained-controlled release of calcium ions and the effect of pH chan...

Hydrophilic Natural Polymers for Sustained-controlled Release of Calcium Hydroxide

Calcium Hydroxide (CH) is commonly employed as intracanal medicament in endodontics. In order to maximize its therapeutic effects, it is essential to develop new approaches for preparing the controlled drug release systems which, in turn, facilities the dissociation of CH into calcium and hydroxyl ions. This work studies the sustained-controlled release of calcium ions and the effect of pH chan...

Controlled Release of Perfumes from Polymers. II. Incorporation and Release of Essential Oils from Glassy Polymers

Release of essential oils from glassy hydrophilic copolymers of 2-hydroxyethyl methacrylate (HEMA) and ethylene glycol dimethacrylate (EGDMA) was studied in a range of releasing media at 307C. The release of carvone, limonene, and eugenol was investigated using swelling-controlled release systems based on these copolymers. By changing the crosslinking ratio of the copolymers it was possible to ...

Electrically Controlled Release of Dopamine from Nanoporous Conducting Polymers

Controlled release of fragrances from polymers I. Thermodynamic analysis

The feasibility of preparation of novel controlled release systems for the delivery of fragrances was investigated. The thermodynamic interactions of model substances which are typical constituents of fragrances with various copolymers were analyzed in the presence of a surrounding fluid. Conditions of favorable release were established by estimating the fragrance partition coefficient. Infinit...