Analysis of high melt‐strength poly(ethylene terephthalate) produced by reactive processing by shear and elongational rheology

2018 ◽  
Vol 59 (2) ◽  
pp. 396-410 ◽  
Author(s):  
Matthias Kruse ◽  
Peng Wang ◽  
Rajas Sudhir Shah ◽  
Manfred H. Wagner
Keyword(s):  
Ethylene Terephthalate ◽  
Reactive Processing ◽  
Melt Strength ◽  
Poly Ethylene Terephthalate ◽  
Elongational Rheology ◽  
Poly Ethylene

Reactive processing of poly(ethylene 2,6-naphthalene dicarboxylate)/poly(ethylene terephthalate) blends

Polymer ◽  
1993 ◽  
Vol 34 (19) ◽  
pp. 4060-4067 ◽  
Author(s):  
Mark E. Stewart ◽  
A.James Cox ◽  
D.Mark Naylor
Keyword(s):  
Ethylene Terephthalate ◽  
Reactive Processing ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

scholarly journals Rheological properties of high melt strength poly(ethylene terephthalate) formed by reactive extrusion

2006 ◽  
Vol 100 (5) ◽  
pp. 3646-3652 ◽  
Author(s):  
J. S. Forsythe ◽  
K. Cheah ◽  
D. R. Nisbet ◽  
R. K. Gupta ◽  
A. Lau ◽  
...  
Keyword(s):  
Rheological Properties ◽  
Ethylene Terephthalate ◽  
Reactive Extrusion ◽  
Melt Strength ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

Influence of the reactive processing of recycled poly(ethylene terephthalate)/poly(ethylene-co-glycidyl methacrylate) blends

2010 ◽  
Vol 120 (1) ◽  
pp. 50-55 ◽  
Author(s):  
Noriaki Kunimune ◽  
Kazushi Yamada ◽  
Yew Wei Leong ◽  
Supaphorn Thumsorn ◽  
Hiroyuki Hamada
Keyword(s):  
Glycidyl Methacrylate ◽  
Ethylene Terephthalate ◽  
Reactive Processing ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

The effects of two-step reactive processing on the properties of recycled poly(ethylene terephthalate)

2016 ◽  
Vol 74 (7) ◽  
pp. 2479-2496 ◽  
Author(s):  
Kai Wang ◽  
Jianhua Qian ◽  
Feipeng Lou ◽  
Wei Yan ◽  
Genhua Wu ◽  
...  
Keyword(s):  
Ethylene Terephthalate ◽  
Reactive Processing ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

scholarly journals Film Blowing of Linear and Long-Chain Branched Poly(ethylene terephthalate)

Polymers ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1605 ◽  
Author(s):  
Michael Härth ◽  
Andrea Dörnhöfer
Keyword(s):  
Film Thickness ◽  
Ethylene Terephthalate ◽  
Reactive Extrusion ◽  
Chain Extender ◽  
Product Performance ◽  
Film Blowing ◽  
Melt Strength ◽  
Thickness Uniformity ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

Film blowing of Poly(ethylene terephthalate) (PET) is challenging due its inherently low melt viscosity and poor melt strength. In this study, it is shown how the rheological properties of a commercial PET can be altered by reactive extrusion using either pyromellitic dianhydride (PMDA) or a multifunctional epoxy (Joncryl® ADR 4368) as chain extender, in order to improve the processing behavior during film blowing. The modified materials were characterized by shear and elongation rheometry and relevant processing characteristics, like melt pressure, bubble stability, and film thickness uniformity, were used to assess the influence of the type of modifier on processing and product performance. It is shown that PMDA is useful to increase the melt strength which leads to an improved bubble stability, while epoxy modified PET shows a reduced drawability that can cause problems at high take-up ratios. On the other hand, the epoxy modifier indicates a pronounced strain hardening during elongational deformation, and therefore leads to a better film thickness uniformity compared to the neat PET and the PET modified with PMDA. The differences with respect to processing performance are discussed and ascribed to the molecular structure of the materials.

Reactive processing of poly(ethylene terephthalate) modified with multifunctional epoxy-based additives

Polymer ◽  
2000 ◽  
Vol 41 (15) ◽  
pp. 5809-5818 ◽  
Author(s):  
S. Japon ◽  
L. Boogh ◽  
Y. Leterrier ◽  
J.-A.E. Månson
Keyword(s):  
Ethylene Terephthalate ◽  
Reactive Processing ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene
Sign in / Sign up

Export Citation Format

Share Document