Cited by 129Polymer composites and self-healingPolymer crystallization and propertiesAdvanced Materials and Mechanics

Multiple shape-memory behavior and thermal-mechanical properties of peroxide cross-linked blends of linear and short-chain branched polyethylenes

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Kolesov, I. S., Radusch, H.-J.·2008·Express Polymer Letters

Abstract

Thermally induced shape-memory effect (SME) in tensile mode was investigated in binary and ternary blends of two ethylene-1-octene copolymers with a degree of branching of 30 and 60 CH3/1000C and/or nearly linear polyethylene cross-linked after melt mixing with 2 wt% of liquid peroxide 2,5-dimethyl-2,5-di-(tert.butylperoxy)-hexane at 190°C.The average cross-link density estimated by means of the Mooney-Rivlin equation on the basis of tensile test data was characterized between 130 and 170 mol•m -3 depending on the blend composition.Thermal analysis points out multiple crystallization and melting behavior of blends caused by the existence of several polyethylene crystal populations with different perfection, size and correspondingly different melting temperature of crystallites.That agrees well with the diversity of blends phase morphology characterized by atomic force microscopy.However, triple-and quadruple-SME could be observed only after two-and accordingly three-step programming of binary and tertiary blends, respectively, at suitable temperatures and strains.Compared to performances obtained for the same blend after single-step programming above the maximal melting temperature the significantly poorer characteristics of SME like strain fixity and strain recovery ratio as well as recovery strain rate occurred after multi-step programming.

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Crossref · 10.3144/expresspolymlett.2008.56

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  • Kolesov and Radusch's blends showed dual-shape and triple-shape memory after two- and three-step programming.

    “Dual-shape and triple-shape memory was observed after two-and accordingly three-step programming of the blends.”

    From A review of stimuli-responsive shape memory polymer composites (2013) · cites this paper as Kolesov and Radusch [67]

    Section 3.4 (p. 470) identifies single-step programming—not two-step programming—as producing dual-shape behavior. The Conclusions report triple- and quadruple-shape effects in the blends following stepwise programming, rather than the claimed dual- and triple-shape pairing for two and three steps. (LLM, conf=0.87)

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  • Blends of cross-linked linear HDPE, ethylene-1-octene copolymers, and short-chain branched polyethylene showed dual-shape and triple-shape memory after two- and three-step programming.

    “Dual-shape and triple-shape memory was observed after two-and accordingly three-step programming of the blends.”

    From A review of stimuli-responsive shape memory polymer composites (2013) · cites this paper as [67]

    The Shape-memory behavior section (p. 470) identifies dual-shape behavior after single-step programming, not two-step programming. The Conclusions state that binary and ternary blends exhibit triple- and quadruple-shape effects, respectively, with multistep programming, rather than the claimed dual- and triple-shape pairing after two and three steps. (LLM, conf=0.87)

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Research works printed but not linked: 2

  1. Li F., Zhu W., Zhang X., Zhao C., Xu M.: Shape memory effect of ethylene-vinyl acetate copolymers. Journal of Applied Polymer Science, 71, 1063-1070 (1999).
  2. Kolesov I. S., Radusch H.-J.: Formgedächtnis in ver- netzten Ethylen-1-Octen-Copolymeren. in: 'Proceed- ings of '11. International Conference Polymeric Mate- rials 2004. Halle/Saale, Germany' PII-50 (2004).

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Authors
Kolesov, I. S., & Radusch, H.-J.
Affiliations
Martin Luther University Halle-Wittenberg (DE)
Corresponding author
Kolesov, I. S.
Venue
Express Polymer Letters
Published
2008
Volume
2
Issue
7
Pages
461-473
ISSN
1788-618X (ISSN-L)
OpenAlex
W1988378746
Cited by
129
References
23
Citations by year
2026: 2 · 2024: 2 · 2023: 7 · 2022: 5 · 2021: 5 · 2020: 2 · 2019: 6 · 2018: 5 · 2017: 7 · 2016: 4 · 2015: 15 · 2014: 8 · 2013: 15 · 2012: 12
FWCI
9.80
Type
journal article
Language
en
Open access
Licence
cc-by-nc-nd
Locations
  • eXPRESS Polymer Letters (publishedVersion, cc-by-nc-nd)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Deutsche Forschungsgemeinschaft
Topics
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer composites and self-healing
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer crystallization and properties
  • Physical Sciences › Engineering › Mechanical Engineering › Advanced Materials and Mechanics
Keywords
ethylene/1-octene copolymers, crosslink density, blend morphology, strain recovery, thermomechanical properties

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