Viscoelastic behavior of semicrystalline polymers at elevated temperatures on the basis of a two-process model for stress relaxation
Апстракт
Viscoelastic behavior at elevated temperatures of high-density polyethylene and isotactic polypropylene was investigated by using the stress relaxation method. The results are interpreted from the view of an established two-process model for stress relaxation in semicrystalline polymers. This model is based on the assumption that the stress relaxation can be represented as a superposition of two thermally activated processes acting in parallel. Each process is associated either with the crystal or amorphous phase of a polymer sample. It was found that the temperature dependence of viscosity coefficients and elastic moduli of these two fractions are similar in the two materials. The experimental data was correlated with literature data of alpha and beta processes in polyethylene and polypropylene obtained from dynamic mechanical thermal analysis. (C) 2000 John Wiley and Sons, Inc.
Кључне речи:
stress relaxation / viscoelastic / transition / DMTAИзвор:
Journal of Polymer Science. Part B: Polymer Physics, 2000, 38, 24, 3239-3246
DOI: 10.1002/1099-0488(20001215)38:24 LT 3239::AID-POLB50 GT 3.0.CO;2-Q
ISSN: 0887-6266
WoS: 000165510900005
[ Google Scholar ]Колекције
Институција/група
VinčaTY - JOUR AU - Đoković, Vladimir AU - Kostoski, Dušan AU - Dramićanin, Miroslav PY - 2000 UR - https://vinar.vin.bg.ac.rs/handle/123456789/2391 AB - Viscoelastic behavior at elevated temperatures of high-density polyethylene and isotactic polypropylene was investigated by using the stress relaxation method. The results are interpreted from the view of an established two-process model for stress relaxation in semicrystalline polymers. This model is based on the assumption that the stress relaxation can be represented as a superposition of two thermally activated processes acting in parallel. Each process is associated either with the crystal or amorphous phase of a polymer sample. It was found that the temperature dependence of viscosity coefficients and elastic moduli of these two fractions are similar in the two materials. The experimental data was correlated with literature data of alpha and beta processes in polyethylene and polypropylene obtained from dynamic mechanical thermal analysis. (C) 2000 John Wiley and Sons, Inc. T2 - Journal of Polymer Science. Part B: Polymer Physics T1 - Viscoelastic behavior of semicrystalline polymers at elevated temperatures on the basis of a two-process model for stress relaxation VL - 38 IS - 24 SP - 3239 EP - 3246 DO - 10.1002/1099-0488(20001215)38:24 LT 3239::AID-POLB50 GT 3.0.CO;2-Q ER -
@article{ author = "Đoković, Vladimir and Kostoski, Dušan and Dramićanin, Miroslav", year = "2000", abstract = "Viscoelastic behavior at elevated temperatures of high-density polyethylene and isotactic polypropylene was investigated by using the stress relaxation method. The results are interpreted from the view of an established two-process model for stress relaxation in semicrystalline polymers. This model is based on the assumption that the stress relaxation can be represented as a superposition of two thermally activated processes acting in parallel. Each process is associated either with the crystal or amorphous phase of a polymer sample. It was found that the temperature dependence of viscosity coefficients and elastic moduli of these two fractions are similar in the two materials. The experimental data was correlated with literature data of alpha and beta processes in polyethylene and polypropylene obtained from dynamic mechanical thermal analysis. (C) 2000 John Wiley and Sons, Inc.", journal = "Journal of Polymer Science. Part B: Polymer Physics", title = "Viscoelastic behavior of semicrystalline polymers at elevated temperatures on the basis of a two-process model for stress relaxation", volume = "38", number = "24", pages = "3239-3246", doi = "10.1002/1099-0488(20001215)38:24 LT 3239::AID-POLB50 GT 3.0.CO;2-Q" }
Đoković, V., Kostoski, D.,& Dramićanin, M.. (2000). Viscoelastic behavior of semicrystalline polymers at elevated temperatures on the basis of a two-process model for stress relaxation. in Journal of Polymer Science. Part B: Polymer Physics, 38(24), 3239-3246. https://doi.org/10.1002/1099-0488(20001215)38:24 LT 3239::AID-POLB50 GT 3.0.CO;2-Q
Đoković V, Kostoski D, Dramićanin M. Viscoelastic behavior of semicrystalline polymers at elevated temperatures on the basis of a two-process model for stress relaxation. in Journal of Polymer Science. Part B: Polymer Physics. 2000;38(24):3239-3246. doi:10.1002/1099-0488(20001215)38:24 LT 3239::AID-POLB50 GT 3.0.CO;2-Q .
Đoković, Vladimir, Kostoski, Dušan, Dramićanin, Miroslav, "Viscoelastic behavior of semicrystalline polymers at elevated temperatures on the basis of a two-process model for stress relaxation" in Journal of Polymer Science. Part B: Polymer Physics, 38, no. 24 (2000):3239-3246, https://doi.org/10.1002/1099-0488(20001215)38:24 LT 3239::AID-POLB50 GT 3.0.CO;2-Q . .