Rheological properties of blown film low‐density polyethylene resins | Zendy

Montes Sergio A. | Zendy

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Rheological properties of blown film low‐density polyethylene resins

Author(s) -

Montes Sergio A.

Publication year - 1984

Publication title -

polymer engineering and science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.503

H-Index - 111

eISSN - 1548-2634

pISSN - 0032-3888

DOI - 10.1002/pen.760240405

Subject(s) - die swell , materials science , low density polyethylene , rheometry , rheology , composite material , viscometer , polyethylene , viscoelasticity , extrusion , isothermal process , capillary action , protein filament , viscosity , thermodynamics , physics

Three blown‐film‐grade low‐density‐polyethylene (LDPE) resins were studied using different rheological techniques. Eccentric rotating disks (ERD), cone‐plate viscometry, capillary rheometry, annular die extrusion, and non‐isothermal stretching of a filament were used. The viscoelasticity of the melts was found to play a dominant role in the observed behavior. Extrudate appearance in annular flow, melt strength, and extensibility are affected by melt elasticity. A correlation was found between the maximum draw ratio of a filament stretched under non‐isothermal conditions and minimum film thickness.

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