Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Vinod Kumar Konaganti"'
Publikováno v:
International Polymer Processing. 32:574-581
A novel slit die with an adjustable gap is designed to perform transient swell measurements while changing the die gap dynamically. A generalized control model is developed to predict time-dependent swell using characteristic relaxation time and corr
Publikováno v:
Journal of Non-Newtonian Fluid Mechanics. 236:73-82
The extrudate swell of an industrial grade high molecular weight high-density polyethylene (HDPE) in capillary dies is studied using the integral K-BKZ constitutive model. The non-linear viscoelastic flow properties of the polymer resin are studied f
Autor:
Vinod Kumar Konaganti, Mahmoud Ansari, Evan Mitsoulis, Ehsan Behzadfar, Savvas G. Hatzikiriakos
Publikováno v:
International Polymer Processing. 31:262-272
Extrudate swell of industrial-grade high-molecular mass high-density polyethylenes (HDPEs) in flat/slit dies is studied using both experiments and simulations. The experimental set-up consists of an optical micrometer to measure the extrudate dimensi
Autor:
Vinod Kumar Konaganti, Marzieh Ebrahimi, Sona Moradi, Antonios K. Doufas, Savvas G. Hatzikiriakos
Publikováno v:
Soft Matter. 12:9759-9768
The slip behavior of high-density polyethylenes (HDPEs) is studied over surfaces of different topology and surface energy. Laser ablation has been used to micro/nano-pattern the surface of dies in order to examine the effect of surface roughness on s
Publikováno v:
Journal of Non-Newtonian Fluid Mechanics. 225:86-93
The extrudate swell of high-density polyethylenes (HDPEs) in capillary flow is studied using an optical micrometer attached to the capillary rheometer. The effects of molecular structure, shear rate, die geometrical characteristics (entrance angle, l
Publikováno v:
Journal of Non-Newtonian Fluid Mechanics. 225:94-105
The extrudate swell phenomenon of a high-molecular-weight HDPE is modeled using the following viscoelastic constitutive equations: the multi-mode Kaye-Bernstein–Kearsley–Zapas (K-BKZ) integral model with the Wagner and the Papanastasiou–Scriven
Publikováno v:
AIP Conference Proceedings.
The extrudate swell of an industrial grade high molecular weight high-density polyethylene (HDPE) in capillary dies is studied experimentally and numerically using the integral K-BKZ constitutive model. The non-linear viscoelastic flow properties of
Publikováno v:
Chemical Engineering Journal. 158:393-401
Chitosan grafted poly(alkyl methacrylate)s (namely chitosan grafted poly(methyl methacrylate) (ChgPMMA), chitosan grafted poly(ethyl methacrylate)(ChgPEMA), chitosan grafted poly(butyl methacrylate) (ChgPBMA) and chitosan grafted poly(hexyl methacryl
Publikováno v:
Physics of Fluids. 30:030601
The slip velocity of an industrial grade high molecular weight high-density polyethylene (HDPE) is studied in steady and dynamic shear experiments using a stress/strain controlled rotational rheometer equipped with a parallel partitioned plate geomet
Autor:
Giridhar Madras, Vinod Kumar Konaganti
Publikováno v:
Industrial & Engineering Chemistry Research. 48:1712-1718
The photocatalytic and thermal degradations of poly(methyl methacrylate), poly(butyl acrylate), and their copolymers of different compositions were studied. The photocatalytic degradation was investigated in o-dichlorobenzene in the presence of two d