Top

Rheologica Acta

Published in:

01-04-2005 | Original Contribution

The effect of short chain branching on the rheological and thermal properties of olefin: α-olefin copolymers

Authors: L. Halász, O Vorster, K. Belina

Published in: Rheologica Acta | Issue 4/2005

Activate our intelligent search to find suitable subject content or patents.

search-config

AI-assisted search

Off

Abstract

An important method of the modification of the properties of polyethylene and polypropylene is the copolymerisation with α-olefins. The α-olefin behaves as a short branch in the structure, and the rheological and thermal properties of copolymers change significantly. A new method is suggested to evaluate the rheological and thermal properties of copolymers on the basis of homopolymer properties, by introducing a short branch degree parameter. The zero shear viscosity, plateau modulus, fractional free volume, reptation tube diameter, glass transition temperature and thermodynamical melting point were calculated.

previous article The effect of slip in the flow of a branched PP melt: experiments and simulations

Dont have a licence yet? Then find out more about our products and how to get one now:

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

über 67.000 Bücher
über 390 Zeitschriften

aus folgenden Fachgebieten:

Automobil + Motoren
Bauwesen + Immobilien
Business IT + Informatik
Elektrotechnik + Elektronik
Energie + Nachhaltigkeit
Maschinenbau + Werkstoffe

Jetzt Wissensvorsprung sichern!

inform now

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

über 102.000 Bücher
über 537 Zeitschriften

aus folgenden Fachgebieten:

Automobil + Motoren
Bauwesen + Immobilien
Business IT + Informatik
Elektrotechnik + Elektronik
Energie + Nachhaltigkeit
Finance + Banking
Management + Führung
Marketing + Vertrieb
Maschinenbau + Werkstoffe
Versicherung + Risiko

Jetzt Wissensvorsprung sichern!

inform now

Carreau P (1972) Rheological equation from molecular network theory. Trans Soc Rheol 16:1–99CrossRef

Dealy JM, Wissbrun KF (1990) Melt rheology and its role in plastic processing. Van Nostrand Reinhold, New York, p 371

Dubek G, Bamford D, Rodriguez-Gonzales A, Bornemann S, Stejny J, Schade B, Alam MA, Arnold M (2001) Free volume, glass transition and degree of branching in metallocene based propylene-α-olefin copolymers, positron lifetime density and different scanning calorimetry studies. J Polym Sci Part B Polym Phys 40:434–453CrossRef

Ferry JD (1980) Viscoelastic properties of polymers 3rd edn. p 376

Fetters LJ, Lohse DJ, Graessley WW (1999) Chain dimensions and entanglement spacings in dense macromolecular systems. J Polym Sci Part B Polym Phys 37:1023–1033CrossRef

Halász L, Vorster O, Masalova I, Tincul I, Potgieter AH (1998a) Rheological properties of some new polypropylene copolymers PPS-14. In: 15th annual meeting of the Polymer Processing Society, Yokohama, 8–12 June, p 281

Halász L, Voster O, Belina K, Tincul I, Potgieter AH (1998b) Thermal and rheological properties of some new polypropylene copolymer, IUPAC Macro 98. In: World polymer conference, 12–18 July, Gold Coast, Australia, p 879

Halász L, Belina K, Vorster O, Tincul I (2003) The effect of comonomer content on the rheological properties of polyolefin copolymers. In: PPS Europa/Africa regional meeting, Athen, Sept 14–17, p 199

Hoffman JD, Weeks JJ (1962) J Res Natl Bur Stand (US) A66, 13

Tincul I, Potgieter AH (1996) Propylene/1-pentene random copolxymers, a new family of high performance polymers, Polypropylene 96. In: 5th annual world congress, Zürich, p IV.3

Tincul I, Joubert DJ, Potgieter AH (1999). “Propylene copolymers with linear Fischer–Tropsch derived α-olefins”, Polypropylene 99. In: 8th annual world congress, 14–16 September, Zürich, p IX.3

Wu S, Beckerbauer R (1992) Chain entanglement in homopolymer, copolymers and terpolymers of methylmetacrylates, styrene and N-phnylmaleimide. Polymer 33:509–515CrossRef

Yasuda KY, Armstrong, RC, Cohen RC (1981) Shear flow properties of concentrated solutions of linear and star branched polystyrene. Rheol Acta 20:163

Title: The effect of short chain branching on the rheological and thermal properties of olefin: α-olefin copolymers
Authors: L. Halász
O Vorster
K. Belina
Publication date: 01-04-2005
Publisher: Springer-Verlag
Published in: Rheologica Acta / Issue 4/2005
Print ISSN: 0035-4511
Electronic ISSN: 1435-1528
DOI: https://doi.org/10.1007/s00397-004-0427-y

Springer Professional

Abstract

Please log in to get access to your license.

Dont have a licence yet? Then find out more about our products and how to get one now:

Springer Professional "Technik"

Springer Professional "Wirtschaft+Technik"

Other articles of this Issue 4/2005

A regularization-free method for the calculation of molecular weight distributions from dynamic moduli data

On the fiber orientation in steady recirculating flows involving short fibers suspensions

Sharkskin instabilities and the effect of slip from gas-assisted extrusion

The role of shear and elongation in the flow of solutions of semi-flexible polymers through porous media

Influence of medium viscosity and adsorbed polymer on the reversible shear thickening transition in concentrated colloidal dispersions

Dissipative soft modes in viscous nematodynamics

Premium Partners