Amorphous and semicrystalline phases in ultrathin films of poly(3-hydroxybutirate)

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Poly(3-hydroxybutirate) (PHB) is a bacterial polyester, which shows a high potential as a material for biotechnology and medicine, including drug delivery and production of biodegradable implants. Being a semicrystalline polymer, PHB is able to form [...]

Density Functional Theory calculations of the ferroelectric poly(vinylidene fluoride-trifluoroethylene) and poly(vinylidene fluoride-chlorotrifluoroethylene) copolymers

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The quantum mechanics calculations of the energetic and structures corresponding to the different structural conformations for the poly(vinylidene fluoride-trifluoroethylene) and poly(vinylidene fluoride-chlorotrifluoroethylene) copolymers show that the Tp conformation is energetically stabilized even with a chlorine [...]