Structure–property relations of 55nm particle-toughened epoxy

Le, Quyen-Huyen; Kuan, Hsu‐Chiang; Dai, Jiabin; Zaman, Izzuddin; Luong, Lee; Ma, Jun

doi:10.1016/j.polymer.2010.08.038

Cited by 105 publications

(72 citation statements)

References 37 publications

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“…However, the tensile-fractured surface of the 11.5 vol% blend exhibited fibril-like morphology-evidence of large scale deformation caused matrix shear yielding; these phenomena demonstrate considerable strong interfacial adhesion between PLA and BE phases, leading to a significant improvement of toughness of PLA. Similar behavior was observed before for compatibilized blend [56] and highly toughened epoxy blends [57]. 11.5 vol% BE.…”

Section: Morphology Of Fracture Surfacesupporting

confidence: 86%

Employing a novel bioelastomer to toughen polylactide

Kang

Qiao

Wang

et al. 2013

Polymer

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ABSTRACT. Biodegradable, biocompatible polylactide (PLA) synthesized from renewable resources has attracted extensive interests over the past decades and holds great potential to replace many petroleum-derived plastics. With no loss of biodegradability and biocompatibility, we highly toughened PLA using a novel bioelastomer (BE)-synthesized from biomass diols and diacids. Although PLA and BE are immiscible, BE particles of ~1 µm in diameter are uniformly dispersed in the matrix, and this indicates some compatibility between PLA and BE. BE significantly increased the cold crystallization ability of PLA, which was valuable for practical processing and performance. SEM micrographs of fracture surface showed a brittle-to-ductile transition owing to addition of BE. At 11.5 vol%, notched Izod impact strength improved from 2.4 to 10.3 kJ/m 2 , 330% increment; the increase is superior to previous toughening effect by using petroleum-based tougheners.

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Section: Morphology Of Fracture Surfacesupporting

confidence: 86%

Employing a novel bioelastomer to toughen polylactide

Kang

Qiao

Wang

et al. 2013

Polymer

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“…This is proved by over 20,000 publications on epoxy1 inorganic particle composites over the past 10 years as shown Fig. 2 Comparison ofnanocomposites with composites in terms of a Surface-smface interparticle dkdistance and b Teal particle surface area in 1 mm3 [8] in Fig. 4 Figure 5 shows how these fillers are distinbarrier property and thenndelectrical conductivities [33-371. guished by their respective total surface area, geometry The high surface area and uniform dispersion are the two key and size.…”

Section: Epoxy-based Nanocompositesmentioning

confidence: 92%

From clay to graphene for polymer nanocomposites—a survey

et al. 2014

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The development of aerospace and automotive industries requests lightweight, high-paformance materials, and polymer nanocomposites are ideal candidates in this case, which is shown by the increasingly more publications in this research field over the past two decades. However, the performance of nanocompositenot only depend on the properties of their individual constituents, but on their morphology and surface characteristics of fillers as well. Selections of nanofille~ geometries, e.g. particulate, fibrous or layered have a tremendous influence on the properties of nanocomposites and their processing methods. In this paper, we review the chronological works performed in the field of polymer nanocomposites, in particular epoxy nanocomposites reinforced with layered fillers, such as clay and gitiphene. Surprisingly layered fillers are commercially available and more costeffective than nanoparticles and carbon nanofibres, and these make them to the most extensively studied fillers that can be geared toward future applications, particularly in large-scale polymer nanocomposite production.

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“…[49,50] Both nanocomposites show obvious higher T g s than neat epoxy, because the Gd 2 O 3 nanoparticles pose barriers to the vibration of matrix molecules through the T g region and thus cause longer relaxation time, in agreement with our previous research where nanoparticles increased the T g of neat epoxy. [21,29,33] Once the interface modification bridges the nanoparticles with matrix, there is a low level of interface slippage between nanoparticles and matrix under dynamic loading, which means a more pronounced barrier effect. Therefore, the epoxy/m-Gd 2 O 3 nanocomposite should show a higher T g than the epoxy/m-Gd 2 O 3 , which is contradictory to what is shown in Figure 11.…”

Section: Fractographmentioning

confidence: 99%

“…[22] New tougheners developed so far include silicate layers, [21,[23][24][25][26] silica nanoparticles, [27][28][29][30][31] block copolymer nanoparticles [32][33] and rubber nanoparticles. [33] In contrast, no metal nanoparticle has been proposed to toughen epoxy.…”

Section: Introductionmentioning

confidence: 99%

Fabrication, Structure and Properties of Epoxy/Metal Nanocomposites

Zaman

et al. 2011

Macro Materials & Eng

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Gd2O3 nanoparticles surface‐modified with IPDI were compounded with epoxy. IPDI provided an anchor into the porous Gd2O3 surface and a bridge into the matrix, thus creating strong bonds between matrix and Gd2O3. 1.7 vol.‐% Gd2O3 increased the Young's modulus of epoxy by 16–19%; the surface‐modified Gd2O3 nanoparticles improved the critical strain energy release rate by 64.3% as compared to 26.4% produced by the unmodified nanoparticles. The X‐ray shielding efficiency of neat epoxy was enhanced by 300–360%, independent of the interface modification. Interface debonding consumes energy and leads to crack pinning and matrix shear banding; most fracture energy is consumed by matrix shear banding as shown by the large number of ridges on the fracture surface. magnified image

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Structure–property relations of 55nm particle-toughened epoxy

Cited by 105 publications

References 37 publications

Employing a novel bioelastomer to toughen polylactide

Employing a novel bioelastomer to toughen polylactide

From clay to graphene for polymer nanocomposites—a survey

Fabrication, Structure and Properties of Epoxy/Metal Nanocomposites

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