Polymer Nanocomposite Interfaces: The Hidden Lever for Optimizing Performance in Spherical Nanofilled Polymers

Li, Ying; Huang, Yanhui; Krentz, Timothy; Natarajan, Bharath; Neely, Tony; Schadler, Linda S.

doi:10.1002/9781119185093.ch1

Cited by 13 publications

(19 citation statements)

References 210 publications

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“…As can be observed in Figure 6b, the formation of a polymer-filler network due to the improvement of the powder dispersion and the increase in the adhesion also affects the values of the storage modulus [43]. The polymer molecules adsorbed on one particle interact with the chains adsorbed on the near particles and with the free and mobile polymer, resulting in a decrease in the mobility and in an increase in the elasticity for AAHDPE30 as compared to HDPE30 [14,75]. In the case of the highly filled systems, the complex viscosity of AAHDPE30 is much higher than the one of HDPE30 at low shear rates (Figure 6a).…”

Section: Viscoelastic Propertiesmentioning

confidence: 95%

“…Polymer nanocomposites are complex systems, whose properties are determined by the properties of the components, the composition, the interfacial interactions and the morphology of the composite [13][14][15]. The adhesion and wetting of the polymer matrix to the surface of the powder [9,16] is a critical aspect since a poor adhesion will lead to the separation of both materials during processing, resulting in a weak interface and poor macroscopic properties [16,17].…”

Section: Introductionmentioning

confidence: 99%

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Modification of Interfacial Interactions in Ceramic-Polymer Nanocomposites by Grafting: Morphology and Properties for Powder Injection Molding and Additive Manufacturing

et al. 2020

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The adhesion of the polymer to ceramic nanoparticles is a key aspect in the manufacturing of ceramic parts by additive manufacturing and injection molding, due to poor separation results in separation during processing. The purpose of this research is to investigate, by means of molecular dynamics simulations and experimental methods, the role of improved interfacial interactions by acrylic acid grafting-high density polyethylene on the adhesion to zirconia nanoparticles and on the composite properties. The polymer grafting results in high adhesion to the nanoparticles, increases the nanoparticles dispersion and improves the viscoelastic and mechanical properties required for additive manufacturing and injection molding.

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Section: Viscoelastic Propertiesmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Modification of Interfacial Interactions in Ceramic-Polymer Nanocomposites by Grafting: Morphology and Properties for Powder Injection Molding and Additive Manufacturing

et al. 2020

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“…A study on the interfacial interaction in polymer nanocomposites suggested the important role of the structure and properties of the filler/matrix interface in determining the bulk properties of the nanocomposites. [ 32 ] The interaction at the material interface affects the properties of the matrix, particularly in the case of soft materials such as a polymer, which is highly morphology dependent. The morphology‐dependent thermal transport property of polymers has been widely studied, for example, an ultradrawn polyethylene nanofiber has been reported to exhibit a very high thermal conductivity of 104 W·m −1 ·K −1 , which is two orders higher than its bulk form.…”

Section: Resultsmentioning

confidence: 99%

Interfacial region effect on thermal conductivity of silicon nanocrystal and polystyrene nanocomposites

Juangsa

Ryu

Morikawa

et al. 2020

Plasma Processes & Polymers

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Thermal transport has been widely studied in nanosize materials owing to their unique properties, including size-dependent thermal transport properties. Bulksize nanostructures are often used for thermal property investigation as well as device applications. The nanocomposite structure of silicon nanocrystals (SiNCs) and polystyrene (PS) has been reported to have a significant thermal transport suppression attributed to the thermal resistance at material interfaces. Although the theoretical effective medium approximation (EMA) model for nanocomposites considers the thermal boundary resistance, a constant deviation is observed between the model and measurement results. In this study, the thermal transport of a polymer, which is known to be morphology dependent, is investigated in a region near the interfacial boundary. Nanocomposites were fabricated from SiNCs with significantly different diameters (6 and 60 nm), and their thermal conductivity was measured to analyze the effect of particle size on the effective thermal conductivity and its deviation. The results showed that the interfacial region of the PS matrix significantly affects the thermal transport, and the EMA model can be enhanced by modifying the thermal conductivity of the matrix owing to the confinement effect at the interfacial region; and the model and measurement results are in good agreement. This study shows that the interaction at material interfaces and its effect on the interfacial region play an important role in determining the thermal transport, opening up the possibility of controlling the thermal transport properties for wide applications of polymerbased nanocomposite devices. K E Y W O R D Sinterfacial region, nanocomposite, silicon nanocrystals, thermal transport

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“…Previous researchers built a systematic study of glassy polymers like polystyrene on interface designing and properties through theoretical and experimental works . However, applying polymer‐grafted nanoparticles in semicrystalline polymers, like polypropylene (PP), is most practical, because of their versatility and practicability in commercial market.…”

Section: Introductionmentioning

confidence: 99%

“…It is now generally accepted that the significant improvement in thermo‐mechanical, optical, thermal, and mechanical properties can be achieved by the incorporation of nanoparticles into a polymer matrix . These improvements can be attributed to the distinct properties of nanoparticles, different from macro‐scale fillers, and the large volume of interphase with properties that differ from the matrix in microstructure (crystallinity or crosslink density) and chain mobility . As a key parameter to determine the volume of the interphase, the interfacial interaction of polymer matrix/particle nanocomposites can be tuned in versatile strategies, including modifying nanoparticle with a silane coupling agent and incorporating compatibilizer into the polymer/particle nanocomposites .…”

Section: Introductionmentioning

confidence: 99%

Interfacial influence on mechanical properties of polypropylene/polypropylene‐grafted silica nanocomposites

Wang

2017

J of Applied Polymer Sci

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Three types of polypropylene‐grafted silica (PGS‐2 K, PGS‐8 K and PGS‐30 K) with different grafting chain lengths were prepared. After melt‐blending PGS with polypropylene (PP), we studied the PP/PGS interface properties and the influence of PP/PGS interfaces on mechanical properties of nanocomposites. The strong matrix/particle interface was observed in PP/PGS‐30 K nanocomposites with 5 wt % particle loading as evidenced by 2.5 °C increased glass transition temperature (Tg) compared with neat PP, whereas the weak matrix/particle interface was observed in PP/PGS‐2 K nanocomposites with decreased Tg. The variations in the matrix/particle interfacial strength lead to a transition in the yield stress of nanocomposites. Compared with the unfilled PP, the yield stress of the PP/PGS‐2 K nanocomposites is decreased by 0.7 MPa, and the yield stress of the PP/PGS‐30 K nanocomposites is enhanced by 1.4 MPa. In addition, benefiting from good dispersion, the PP/PGS‐masterbatch nanocomposites with a strong matrix/particle interface not only exhibit increased Young's modulus and yield stress, but also the strain at break remains in line with the unfilled PP, which is in contrast to the conventional wisdom that the gain in modulus and strength must be at the expense of the decreased break strain. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45887.

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Polymer Nanocomposite Interfaces: The Hidden Lever for Optimizing Performance in Spherical Nanofilled Polymers

Cited by 13 publications

References 210 publications

Modification of Interfacial Interactions in Ceramic-Polymer Nanocomposites by Grafting: Morphology and Properties for Powder Injection Molding and Additive Manufacturing

Modification of Interfacial Interactions in Ceramic-Polymer Nanocomposites by Grafting: Morphology and Properties for Powder Injection Molding and Additive Manufacturing

Interfacial region effect on thermal conductivity of silicon nanocrystal and polystyrene nanocomposites

Interfacial influence on mechanical properties of polypropylene/polypropylene‐grafted silica nanocomposites

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