Toward "Green" Hybrid Materials: Core-Shell Particles with Enhanced Impact Energy Absorbing Ability
2016 (English)In: ACS Sustainable Chemistry and Engineering, ISSN 2168-0485, Vol. 4, no 7, 3757-3765 p.Article in journal (Refereed) Published
Restrained properties of "green" degradable products drive the creation of materials with innovative structures and retained eco-attributes. Herein, we introduce the creation of impact modifiers in the form of core-shell (CS) particles toward the creation of "green" composite materials. Particles with CS structure constituted of PLA stereocomplex (PLASC) and a rubbery phase of poly(epsilon-caprolactone-co-D,L-lactide) (P[CL-co-LA]) were successfully achieved by spray droplet atomization. A synergistic association of the soft P[CL-co-LA] and hard PLASC domains in the core-shell structure induced unique thermo-mechanical effects on the PLA-based composites. The core-shell particles enhanced the crystallization of PLA matrices by acting as nucleating agents. The core-shell particles functioned efficiently as impact modifiers with minimal effect on the composites stiffness and strength. These findings provide a new platform for scalable design of polymeric-based structures to be used in the creation of advanced degradable materials.
Place, publisher, year, edition, pages
American Chemical Society (ACS), 2016. Vol. 4, no 7, 3757-3765 p.
Polylactide, Biodegradable, Stereocomplex, Homocomposites, Impact modifier
IdentifiersURN: urn:nbn:se:kth:diva-191756DOI: 10.1021/acssuschemeng.6b00397ISI: 000380291200021ScopusID: 2-s2.0-84979020322OAI: oai:DiVA.org:kth-191756DiVA: diva2:970967
FunderSwedish Research Council, A0347801EU, European Research Council, 246776
QC 201609152016-09-152016-09-022016-09-15Bibliographically approved