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epsilon-Decalactone: A Thermoresilient and Toughening Comonomer to Poly(L-lactide)
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.ORCID iD: 0000-0002-5850-8873
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.
2013 (English)In: Biomacromolecules, ISSN 1525-7797, E-ISSN 1526-4602, Vol. 14, no 8, 2883-2890 p.Article in journal (Refereed) Published
Abstract [en]

The renewable monomer epsilon-decalactone is an excellent partner to L-lactide, where their copolymers overcome inherent drawbacks of polylactide, such as low thermal stability and brittleness. epsilon-Decalactone is a seven-membered lactone that was successfully polymerized with Sn(Oct)(2) and 1,5,7-triazabicyclo[4.4.0]dec-5-ene into both an amorphous homopolymer and copolymers with high molecular weight, low dispersity, and predicted macromolecular architecture. The thermoresilient nature of epsilon-decalactone is reflected in a high polymerization ceiling temperature and increased thermal stability for the prepared copolymers. The high ceiling temperature enables easy modulation of the polymerization rate via temperature while maintaining architectural control. The apparent rate constant was increased 15-fold when the temperature was increased from 110 to 150 degrees C. Copolymers of L-lactide and epsilon-decalactone, either with the latter as a central block in triblock polymers or with randomly positioned monomers, exhibited exceptionally tough material characteristics. The triblock copolymer had an elongation-at-break 250 times greater than that of pure poly(L-lactide). The toughness of the copolymers is attributed to the flexible nature of the polymer derived from the monomer epsilon-decalactone and to the segment immiscibility. These properties result in phase separation to soft and hard domains, which provides the basis for the elastomeric behavior.

Place, publisher, year, edition, pages
2013. Vol. 14, no 8, 2883-2890 p.
National Category
Biochemistry and Molecular Biology
Identifiers
URN: urn:nbn:se:kth:diva-128481DOI: 10.1021/bm400733eISI: 000323143700049Scopus ID: 2-s2.0-84881596775OAI: oai:DiVA.org:kth-128481DiVA: diva2:647889
Funder
EU, European Research Council, 246776
Note

QC 20130912

Available from: 2013-09-12 Created: 2013-09-12 Last updated: 2017-12-06Bibliographically approved
In thesis
1. Functional Degradable Polymers: from the monomeric point of view
Open this publication in new window or tab >>Functional Degradable Polymers: from the monomeric point of view
2015 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Degradable polymers is key, within the future vison, of creating a sustainable society were all aspects, cradle to grave, can be realized in a sustainable way. It is imperative to consider, how the monomer is formed, its polymerization, the material properties created and the final degradation behavior. In this thesis, the major focus will be placed on the three former aspects from the vantage point of the monomer. The immense variety of different monomers available within the realm of polymer chemistry necessitates a logical division among them. Herein, we make such a division according to their respective inherent thermodynamic properties and how these translate into the synthetic behavior of the corresponding polymers. These divisions are as follows: stable monomers (monomers that resist becoming polymers), meta-stable monomers (monomers for which temperature is of immense importance during polymer formation), and unstable monomers (monomers that desire to be in the polymeric state). From this viewpoint, three different investigations were conducted, thereby demonstrating the inherent advantages and disadvantages of each type together with the importance of using the “right” catalyst for the “right” monomer.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2015. 75 p.
Series
TRITA-CHE-Report, ISSN 1654-1081 ; 2015:26
National Category
Polymer Chemistry
Identifiers
urn:nbn:se:kth:diva-166872 (URN)978-91-7595-585-8 (ISBN)
Public defence
2015-06-12, D2, Lindstedtsvägen 5, KTH, Stockholm, 09:00 (English)
Opponent
Supervisors
Note

QS C 20150222

Available from: 2015-05-22 Created: 2015-05-20 Last updated: 2015-05-22Bibliographically approved

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Odelius, Karin

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