On the evaluation of flow properties characterizing blown film extrusion of polyolefin alternatives
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F25%3A00639254" target="_blank" >RIV/67985874:_____/25:00639254 - isvavai.cz</a>
Alternative codes found
RIV/70883521:28110/25:63597398
Result on the web
<a href="https://www.mdpi.com/2073-4360/17/17/2353" target="_blank" >https://www.mdpi.com/2073-4360/17/17/2353</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/polym17172353" target="_blank" >10.3390/polym17172353</a>
Alternative languages
Result language
angličtina
Original language name
On the evaluation of flow properties characterizing blown film extrusion of polyolefin alternatives
Original language description
The lower melt strength of biodegradable materials in comparison to low density polyethylenes raises serious issues regarding their processability via blown film molding. Thus, reliable rheological characterization is a viable option for assessing their efficient flow performance. The blends of poly (lactic acid) (PLA) and poly (butylene adipateco-terephthalate) (PBAT) modified with four chain-extending cross-linkers (CECLs) undergo shearing during extrusion and are subjected to extensional deformation during the subsequent film blowing. The shear viscosity data obtained with a capillary rheometer corresponded well to the molecular weights obtained by gel permeation chromatography, while an evaluation of elongational viscosity using a Sentmanat Extensional Rheometer failed due to sample sagging during the process of temperature setting and an unacceptable deviation from the theoretically supposed exponential decrease of sample cross-sections. Therefore, the response of the PBAT/PLA blends to elongation was determined via changes in the duration of time intervals corresponding to the rupture of elongated samples. An increased consistency of the PBAT/PLA blends with CECL, as previously indicated by dynamic mechanical analysis, differential scanning calorimetry, and scanning electron microscopy, was evaluated in this way.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10404 - Polymer science
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Polymers
ISSN
2073-4360
e-ISSN
2073-4360
Volume of the periodical
17
Issue of the periodical within the volume
17
Country of publishing house
CH - SWITZERLAND
Number of pages
17
Pages from-to
2353
UT code for WoS article
001569742900001
EID of the result in the Scopus database
2-s2.0-105015604636