Processing aids for biodegradable polymers | Zendy

Jazrawi Bashar | Zendy; Noroozi Nazbanoo | Zendy; Ansari Mahmoud | Zendy; Hatzikiriakos Savvas G. | Zendy

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Processing aids for biodegradable polymers

Author(s) -

Jazrawi Bashar,

Noroozi Nazbanoo,

Ansari Mahmoud,

Hatzikiriakos Savvas G.

Publication year - 2012

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.38562

Subject(s) - extrusion , materials science , composite material , capillary action , polymer , fracture (geology) , shear (geology) , shear rate , polymer chemistry , rheology

The melt fracture behavior of several commercial polylactides (PLAs) and poly(ε‐caprolactone) (PCL) is investigated. PLAs and PCL with molecular weights greater than a certain value were found to exhibit melt fracture phenomena in capillary extrusion, which manifests itself as distortions on their surface once the extrusion rate exceeds a critical value. It was found that the addition of a small amount of PCL (typically 0.5 wt %) into the PLA and vice versa is effective in eliminating and delaying the onset of melt fracture to higher shear rates in the capillary extrusion of PLA and PCL, respectively. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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