Recoverable Extensional Flow of Polymer Melts and Its Relevance for Processing
نویسندگان
چکیده
منابع مشابه
simulation and design of electronic processing circuit for restaurants e-procurement system
the poor orientation of the restaurants toward the information technology has yet many unsolved issues in regards to the customers. one of these problems which lead the appeal list of later, and have a negative impact on the prestige of the restaurant is the case when the later does not respond on time to the customers’ needs, and which causes their dissatisfaction. this issue is really sensiti...
15 صفحه اولFlow enhancement of electrical fluctuations in polymer solutions and melts
We show that the origin of the enhanced electrical fluctuations under flow, observed over the last is years in polymer solutions, can be traced back to a dissipative cross coupling between the strain tensor (characterizing transient polymeric networks) and electric fields. Additional experiments to further test our picture are suggested.
متن کاملThe role of extensional rheology in polymer processing
The shear behavior of polymers obtained by means of devices such as capillary and cone-and-plate rheometers is commonly used to assess their processing performance and as a characterization tool. However, the number of instances when two polymers have the same shear properties but perform differently during certain types of processing operations (e.g. film blowing and sheet extrusion) indicate ...
متن کاملRelaxation of dilute polymer solutions following extensional flow 1
The relaxation of dilute polymer solutions following stretch in uniaxial extensional flow is investigated via Brownian dynamic simulations of a flexible freely-draining bead-rod chain. The bead-rod chain simulations are compared to Brownian dynamic simulations of a FENE dumbbell and numerical calculations of a FENE-PM chain. A universal relaxation curve for the stress decay from steady-state is...
متن کاملExtensional Response of the Pom-pom Model through Planar Contraction Flows for Branched Polymer Melts -part 2 Extensional Response of the Pom-pom Model through Planar Contraction Flows for Branched Polymer Melts -part 2
One objective of this study is to assess the influence of the number of dangling arms at each end of the pom-pom molecule on flow characteristics in a 4:1 planar rounded-corner contraction, where varying the number of arms affects the level of entanglement in the system. For these complex flows, we evaluate the major influence of extensional viscosity and Trouton ratio when comparing kinetic-ba...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Polymers
سال: 2020
ISSN: 2073-4360
DOI: 10.3390/polym12071512