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Title:Polypropylene blends with m-EPR copolymers : mechanical and rheological properties
Authors:ID Švab, Iztok (Author)
ID Pustak, Anđela (Author)
ID Denac, Matjaž (Author)
ID Sever Škapin, Andrijana (Author)
ID Leskovac, Mirela (Author)
ID Musil, Vojko (Author)
ID Šmit, Ivan (Author)
Files:URL URL - Source URL, visit https://journals.matheo.si/index.php/ACSi/article/view/4026
 
.pdf PDF - Presentation file, download (3,19 MB)
MD5: AEBB58117213605B9E43B01EB93AF90E
 
Language:English
Typology:1.01 - Original Scientific Article
Organization:Logo ZAG - Slovenian National Building and Civil Engineering Institute
Abstract:The effects of two metallocene ethylene-propylene-based elastomers (m-EPR1 and m-EPR2) differing in molecular mass and viscosity on mechanical, rheological and interfacial properties were compared. The m-EPR elastomers were added to iPP in 2.5, 5, 10, 15, and 20 vol.%. Torque values, elongation at break and impact strength measured of the iPP/m-EPR1 blends were higher than the iPP/m-EPR2 blends due to higher molten viscosity of m-EPR1 than m-EPR2 copolymer. Slight differences in Young moduli as well as in tensile strength at yield and at break might indicate that tensile properties of iPP/m-EPR blends were not significantly affected by difference in viscosity or molecular mass, miscibility and spherulite size. Optimization diagrams indicated the metallocene m-EPR copolymers are efficient impact modifiers for polypropylene and showed good balancing of mechanical properties in iPP/m-EPR blends.
Keywords:isotactic polypropylene, metallocene ethylene-propylene-based elastomers, blend, mechanical properties, adhesion parameters
Publication status:Published
Publication version:Version of Record
Publication date:19.06.2018
Publisher:Slovensko kemijsko društvo
Year of publishing:2018
Number of pages:str. 344-353
Numbering:Vol. 65, no. 2
PID:20.500.12556/DiRROS-17545 New window
UDC:54
ISSN on article:1580-3155
DOI:10.17344/acsi.2017.4026 New window
COBISS.SI-ID:2383719 New window
Copyright:© authors, 2018
Note:Nasl. z nasl. zaslona; Opis vira z dne 30. 7. 2018;
Publication date in DiRROS:13.12.2023
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Downloads:286
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Record is a part of a journal

Title:Acta chimica slovenica
Shortened title:Acta chim. slov.
Publisher:Slovensko kemijsko društvo, =Slovenian Chemical Society
ISSN:1580-3155
COBISS.SI-ID:21870085 New window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

Language:Slovenian
Abstract:V delu smo preučevali vpliv dveh metalocenskih elastomerov na osnovi etilena/propilena (m-EPR1 in m-EPR2), ki sta se razlikovala v molekulski masi in viskoznosti, na mehanske, reološke in medpovršinske lastnosti. V iPP matrico smo dodali 2.5, 5, 10, 15 in 20 vol.% m-EPR elastomera. Ugotovili smo, da imajo mešanice iPP/m-EPR1 višje vrednosti torzijskega momenta mešanja, raztezka ob pretrgu in udarne žilavosti kot mešanice iPP/m-EPR2 zaradi višje viskoznosti taline m-EPR1 kot m-EPR2 elastomera. Manjše razlike v Youngovem modulu, meji plastičnosti in natezni trdnosti pri pretrgu kažejo, da natezne lastnosti mešanic iPP/m-EPR niso v veliki meri odvisne od viskoznosti ali molekulske mase, mešljivosti in velikosti sferolitov. Optimizirani diagrami kažejo, da so m-EPR elastomeri učinkoviti modifikatorji žilavosti za polipropilen in kažejo ugodno ravnotežje mehanskih lastnosti mešanic iPP/m-EPR.


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