2013
DOI: 10.1002/pen.23648
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Morphology and mechanical properties of nanostructured acrylic tri-block-copolymer modified epoxy

Abstract: In this study, acrylic tri‐block‐copolymers of different compositions and constituents were used to modify an epoxy resin. In epoxy the block‐copolymers self‐assembled to generate different nanostructured phases. Spherical micelles and vesicles were formed due to preferential interactions among constituents of the blends. The effect of modifier concentration and morphology on the resulting mechanical properties was investigated. At a modifier content of 5 wt% a more than threefold increase in strain energy rel… Show more

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Cited by 37 publications
(29 citation statements)
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“…Such features are also present in EP/BCP (10 wt%) (item C). Indeed, the formation of such particles in BCP toughened epoxies was already reported by other researchers . Micrographs taken at higher magnification (Fig.…”
Section: Discussionsupporting
confidence: 81%
“…Such features are also present in EP/BCP (10 wt%) (item C). Indeed, the formation of such particles in BCP toughened epoxies was already reported by other researchers . Micrographs taken at higher magnification (Fig.…”
Section: Discussionsupporting
confidence: 81%
“…Block copolymer (BCP)/epoxy blends have been the subject of a large number of recent studies where the focus was placed on the role of the BCP as a processing aid [1,2], as a template for the self-assembly of different type of nanoparticles [3][4][5], or as a toughening agent [6][7][8][9][10][11][12][13][14][15][16][17][18][19]. The nanostructuration of the BCP in the epoxy matrix requires an immiscible block, either initially [20,21] or during polymerization [22,23], and another block that keeps its miscibility up to high or full conversions.…”
Section: Introductionmentioning
confidence: 99%
“…Too much filler lead to the performance degradation of modified epoxies because the tensile loading caused stress concentration around filler particle until dissipation of the energy by sample deformation. 53 Another reason was that excessive filler content caused uneven dispersion, leading to phase separation. From Fig.10(b), the toughness of neat epoxy was 155.2 J/m 3 and increased up to 385.6 J/m 3 upon addition of PBI-HPG/RGO.…”
Section: Please Do Not Adjust Marginsmentioning
confidence: 99%