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Investigation of rheology and morphology to follow physical fibrillar network evolution through fiber spinning of PP/PA6 blend fiber

This work is aimed at investigating the influence of fibrillar morphology of deformed Polyamide 6 (PA6) droplets dispersed in Polypropylene (PP) matrix on the melt viscoelastic behavior of their blends. The blends of PP with various amounts of PA6 (1%, 6%, 10%, and 20%) were prepared by melt mixing... Full description

Contained in: Polymer Engineering and Science, Greenwich Vol. 58, No. 8 (2018), p. 1251-1260
Journal Title: Polymer Engineering and Science, Greenwich
Fulltext access:
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Links: Additional Link (dx.doi.org)
ISSN: 1548-2634
Additional Keywords: CHEMIEFASER
DOPPELSCHNECKENEXTRUDER
ELASTIZITAET
ELEKTRONENMIKROSKOPIE
FIBRILLE
POLYAMID-6
POLYPROPYLEN
RHEOLOGIE
STOFFGEMISCH
TROEPFCHEN
VISKOELASTISCHE-EIGENSCHAFT
DOI: 10.1002/pen.24686
Notes: Copyright: Metadaten: TEMA, Copyright WTI-Frankfurt-digital GmbH
Copyright: (C) Alle Rechte beim Herausgeber
Physical Description: 10 Seiten, 8 Bilder
ID (e.g. DOI, URN): 10.1002/pen.24686
PPN (Catalogue-ID): WTI061274712
Note: WTI TEMA DB
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520 |a This work is aimed at investigating the influence of fibrillar morphology of deformed Polyamide 6 (PA6) droplets dispersed in Polypropylene (PP) matrix on the melt viscoelastic behavior of their blends. The blends of PP with various amounts of PA6 (1%, 6%, 10%, and 20%) were prepared by melt mixing in a co-rotating twin screw extruder and fibrillated by fiber spinning process. Scanning Electron Microscopy revealed that the PA6 spherical droplets form fibrillar inclusions after fiber spinning. The steady and transient shear rheological responses of samples were evaluated in both linear and nonlinear ranges of deformation. Non-terminal behavior of storage modulus at low frequency appeared as a typical characteristic of fibrillar morphology whose width and value depend on fibril growth. Storage modulus and complex viscosity of the blends containing PA6 fibrillated structure were remarkably enhanced compared to as-extruded samples. The fibrillar-induced elasticity of the fibers is a distinguishable behavior which was revealed by conducting transient stress and creep-recovery measurements and upon appearing mature fibrils, elasticity of the polymer blend fibers increased significantly. [Copyright John Wiley & Sons. Reproduced with permission.] 
653 4 |a STOFFGEMISCH 
653 4 |a POLYPROPYLEN 
653 4 |a CHEMIEFASER 
653 4 |a RHEOLOGIE 
653 4 |a TROEPFCHEN 
653 4 |a ELEKTRONENMIKROSKOPIE 
653 4 |a ELASTIZITAET 
653 4 |a FIBRILLE 
653 4 |a DOPPELSCHNECKENEXTRUDER 
653 4 |a POLYAMID-6 
653 4 |a VISKOELASTISCHE-EIGENSCHAFT 
773 0 8 |i In  |t Polymer Engineering and Science, Greenwich  |g Vol. 58, No. 8 (2018), p. 1251-1260  |q 58:8<1251-1260  |x 1548-2634  |x 1548-2634 
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