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DOX mediated synthe...
DOX mediated synthesis of PLA-co-PS graft copolymers with matrix-driven self-assembly in PLA-based blends
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- Gazzotti, Stefano (författare)
- KTH,Fiber- och polymerteknologi
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- Adolfsson, Karin H. (författare)
- KTH,Fiber- och polymerteknologi
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- Hakkarainen, Minna (författare)
- KTH,Polymerteknologi
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Farina, H. (författare)
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Silvani, A. (författare)
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Ortenzi, M. A. (författare)
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(creator_code:org_t)
- Elsevier BV, 2022
- 2022
- Engelska.
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Ingår i: European Polymer Journal. - : Elsevier BV. - 0014-3057 .- 1873-1945. ; 170, s. 111157-
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Intriguing phase morphology was formed through self-assembly of polylactide-polystyrene (PLA-co-PS) graft copolymers blended with polylactide (PLA). PLA-co-PS graft copolymers were synthesized by exploiting a styrene-functionalized 1,3-Dioxolan-4-one (StyDOX) monomer through a two-step procedure and their structure was confirmed. Different amounts of PLA-co-PS and commercial PLA were solution cast to blend films. Etching of amorphous PLA revealed the presence of spherical micrometer sized domains dispersed within the films, arising from the self-assembly behavior of PLA-co-PS caused by the immiscibility of PS-grafts in the PLA matrix. EDS and IR imaging analyses further revealed that these microspheres were characterized by a PS-rich core opposed to the PLA-rich outer shell, which is expected to be miscible and able to form favorable interactions with the PLA matrix. PLA/PS blends were also prepared with different loadings of PLA-co-PS. The ability of PLA-co-PS to compatibilize the two phases was assessed through rheological analyses. Finally, the possibility to chemically recycle the copolymer was evaluated.
Ämnesord
- NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
Nyckelord
- Blending
- Etching
- Graft copolymers
- Grafting (chemical)
- Infrared imaging
- Self assembly
- Styrene
- Blend films
- Functionalized
- Graft- copolymers
- matrix
- Phase morphology
- Poly lactide
- Self-assembly behaviors
- Solution-cast
- Synthesised
- Two-step procedure
- Polyesters
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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