Interfacial agent thermoplastic

Uses Thickener, stabilizer, suspending agent in pharmaceutical tablet coatings, controlled-release pr s., encapsulation, tablet binding Features Highly surf, active low surf, and interfacial tensions thermoplastic extrudable heat-sealable in films and coatings inert Regulatory DMF listed... 

In solution, block copolymers display interesting colloidal and interfacial properties. They can be used as emulsifying agents in water-oil and oil-oil systems (6 ). In the later case, the oil phases are solid and they give rise to polymeric alloys (7.) or they are liquid and they allow the preparation of latexes in organic medium (8 ). However, the molecular structure of block copolymers based on polybutadiene PB (70 ) and polystyrene PS behave as thermoplastic elastomers when engaged in multiblock (PB-PS)n or triblock (PS-PB-PS) structures but never when implied in inverse triblock or diblock arrangements. Similarly the... 

This concept was explored by Lee and DiBenedetto (1992) who introduced a second LCP as a compatibUizing agent in order to improve the interfacial adhesion and dispersion between components of incompatible LCP/thermoplastic blends. The primary reason that the LCP and thermoplastic polymers are immiscible is due to molecular conformation differences or entropy effects. The concept for using a second LCP in such blends is that the two LCP s will be miscible due to entropy effects and the second LCP and the thermoplastic polymer will adhere due to specific interactions. The LCP coupling agent used in this work was a copolymer of PET and HBA known as PHB60. Blends of an LCP with both polycarbonate (PC) and PET were prepared with and without the addition of the second LCP... 

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