“Compatibilization” through Elongational Flow Processing of LDPE/PA6 Blends

Compatibilization of immiscible polymer blends using graphene oxide sheets.

By taking the advantage of the unique amphiphilic structure of graphene oxide sheets (GOSs), we develop here a new and effective strategy for compatibilizing immiscible polymer blends. With the incorporation of only 0.5 wt % GOSs into immiscible polyamide/polyphenylene oxide (PA/PPO, 90/10) blends, the droplet diameter of the dispersed minor phase (PPO) is dramatically reduced by more than 1 or...

Elongational flow of blends of long and short polymers: effective stretch relaxation time.

We study the onset of chain stretch and emergent extension hardening in the nonlinear rheological response of molten binary blends of long and short polymers. We predict that, upon dilution with short chains, the effective stretch relaxation time of the long chains initially increases in proportion to varphi_{L};{-alpha} (where varphi_{L} is the volume fraction of long chains and alpha is the d...

Squeezing and Elongational Flow

1. Squeezing and Elongational Flow in Fluid Foods 2. Foundations of Squeezing Flow Viscometry 2.1. Elongational Flow: Lubricated Squeezing Flow Kinematics 2.2. Shear Flow: Non-lubricated Squeezing Flow Kinematics 3. Parallel Plates Viscometer 3.1. Lubricated Squeezing Flow 3.2. Non-lubricated Squeezing Flow 3.3. Applications 3.4. Shortcomings 3.5. Other Configurations 4. Concluding Remarks and ...

Elongational Flows in Polymer Processing

Compatibilization of polycarbonate/poly (ethylene terephthalate) blends by addition of their transesterification product

In this study, poly carbonate (PC) and poly (ethylene terephthalate) (PET) were reactive melt-blended under two different conditions to produce PC/PET copolymers. For each condition, samples were taken at specified mixing times representative a specific structure of copolymers and each one employed to physically compatibilize a PC/PET blend with a fixed composition. Reactive blending and copoly...