Details
| Original language | English |
|---|---|
| Journal | Journal of applied polymer science |
| Volume | 131 |
| Issue number | 7 |
| Publication status | Published - 11 Nov 2013 |
Abstract
The mastication behavior of synthetic cis-1,4-polyisoprene (IR), deproteinized natural rubber (DPNR), and natural rubber (NR) in an internal mixer has been investigated at mixing temperatures from 88 to 186°C and different levels of mechanical energy, using Mooney viscosity and size exclusion chromatography (SEC). An envelope-shaped mastication efficiency curve and high similarity in the mastication behavior can be observed for IR and NR but not for DPNR. The minimum of the envelope-shaped curve shifts to lower temperatures when the mechanical energy is increased. Based on these findings, a mathematical description for the contribution of mechanical and thermo-oxidative mastication mechanisms has been established. Distinct statistical distribution of thermo-oxidative scission can only be observed in SEC measurements of materials masticated at high temperatures over 170°C.
Keywords
- degradation, elastomers, rubber, theory and modeling, viscosity and viscoelasticity
ASJC Scopus subject areas
- Chemistry(all)
- Materials Science(all)
- Surfaces, Coatings and Films
- Materials Science(all)
- Polymers and Plastics
- Materials Science(all)
- Materials Chemistry
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In: Journal of applied polymer science, Vol. 131, No. 7, 11.11.2013.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Mastication Behavior of cis-1,4-Polyisoprene as a Model for NaturalRubber
AU - Wortmann, Christopher
AU - Lindner, Patrick
AU - Dettmer, Fabian
AU - Steiner, Frank
AU - Scheper, Thomas
PY - 2013/11/11
Y1 - 2013/11/11
N2 - The mastication behavior of synthetic cis-1,4-polyisoprene (IR), deproteinized natural rubber (DPNR), and natural rubber (NR) in an internal mixer has been investigated at mixing temperatures from 88 to 186°C and different levels of mechanical energy, using Mooney viscosity and size exclusion chromatography (SEC). An envelope-shaped mastication efficiency curve and high similarity in the mastication behavior can be observed for IR and NR but not for DPNR. The minimum of the envelope-shaped curve shifts to lower temperatures when the mechanical energy is increased. Based on these findings, a mathematical description for the contribution of mechanical and thermo-oxidative mastication mechanisms has been established. Distinct statistical distribution of thermo-oxidative scission can only be observed in SEC measurements of materials masticated at high temperatures over 170°C.
AB - The mastication behavior of synthetic cis-1,4-polyisoprene (IR), deproteinized natural rubber (DPNR), and natural rubber (NR) in an internal mixer has been investigated at mixing temperatures from 88 to 186°C and different levels of mechanical energy, using Mooney viscosity and size exclusion chromatography (SEC). An envelope-shaped mastication efficiency curve and high similarity in the mastication behavior can be observed for IR and NR but not for DPNR. The minimum of the envelope-shaped curve shifts to lower temperatures when the mechanical energy is increased. Based on these findings, a mathematical description for the contribution of mechanical and thermo-oxidative mastication mechanisms has been established. Distinct statistical distribution of thermo-oxidative scission can only be observed in SEC measurements of materials masticated at high temperatures over 170°C.
KW - degradation
KW - elastomers
KW - rubber
KW - theory and modeling
KW - viscosity and viscoelasticity
UR - http://www.scopus.com/inward/record.url?scp=84892581960&partnerID=8YFLogxK
U2 - 10.1002/app.39989
DO - 10.1002/app.39989
M3 - Article
AN - SCOPUS:84892581960
VL - 131
JO - Journal of applied polymer science
JF - Journal of applied polymer science
SN - 0021-8995
IS - 7
ER -