How are the thermal properties of polypropylene/graphene nanoplatelet composites affected by polymer chain configuration and size of nanofiller?

Ajorloo, Mojtaba; Fasihi, Mohammad; Ohshima, Masahiro; Taki, Kentaro

doi:10.1016/j.matdes.2019.108068

Cited by 67 publications

(23 citation statements)

References 56 publications

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“…Hence, we observe the augmentation of storage modulus values for different temperature intervals for the nanocomposites. The UP nanocomposite at 5% POSS-MMT addition exhibited 27.3% enhancement of the storage modulus, and this could be attributed to the superior interaction of the UP with POSS-MMT along with maximum stress load transfer from nanofillers onto the polymer matrix [ 55 ]. The glass temperature value ( T g ) of nanocomposites, derived from tan delta plots ( Figure 8 b), displays an increasing trend with the addition of POSS-MMT.…”

Section: Resultsmentioning

confidence: 99%

Effect of POSS-Modified Montmorillonite on Thermal, Mechanical, and Electrical Properties of Unsaturated Polyester Nanocomposites

et al. 2020

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Montmorillonite (MMT) displays excellent cohesion with an unsaturated polyester (UP) matrix to generate a material which exhibits an extensive range of commercial applications. The organic modification of MMT using polyhedral oligomeric silsesquioxanes (POSS) and the effect of POSS-MMT on the thermal, mechanical, and electrical properties of UP are reported here. Transmission electron microscopy (TEM) images were used to characterize the modification of MMT using POSS. Modified MMT (POSS-MMT) was incorporated, at different wt.% (0.5, 1, 3, 5), into UP via in-situ polymerization. The presence of POSS-MMT enhanced the characteristic properties of UP as a consequence of good dispersion in the polymer matrix. Scanning electron microscopy (SEM) images support effective POSS-MMT dispersion leading to tensile strength enhancement of a UP/POSS-MMT nanocomposite (3 wt.% POSS-MMT) by 54.7% as compared to that for unmodified UP. TGA displays a 35 °C improvement of thermal stability (10% mass loss) at 5% POSS-MMT incorporation, while the electrical conductivity is improved by 108 S/m (3 wt.% POSS-MMT) in comparison to that for unmodified UP. The conventional obstacle of UP associated with shrinkage weight loss during curing seems to be moderated with POSS-MMT incorporation (3%) resulting in a 27.8% reduction in shrinkage weight loss. These fabricated nanocomposites expand the versatility of UP as a high-performance material owing to enhancements of properties.

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Section: Resultsmentioning

confidence: 99%

Effect of POSS-Modified Montmorillonite on Thermal, Mechanical, and Electrical Properties of Unsaturated Polyester Nanocomposites

et al. 2020

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“…The graphene reinforced polypropylene (PP) composites showed a beneficial impact on conductivity, thermomechanical, thermal stability, and crystallinity properties of the nanocomposites. In the dynamic mechanical analysis, the distribution of GP with different particle sizes in PP showed higher storage modulus and improved thermal stability [51]. Liang, J.Z, et al reported that the addition of graphene into PP, showed some improvement effects of the GNPs on the flexural properties of the reinforced PP composites in GNPs weight fraction range from 0.1 to 0.5 wt.%.…”

Section: Polypropylene/graphene Composite Materialsmentioning

confidence: 99%

Graphene Polymer Composites: Review on Fabrication Method, Properties and Future Perspectives

Daniel¹,

Hong²

2021

Adv. Sci. Technol. Res. J.

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Graphene as new material, due to its unique and novel properties has attracted extensive attention and in-depth research in the scientific community. Graphene, as a covalently bonded monolayer of carbon atoms with a hexagonal structure, is currently the thinnest material found in the world, and also makes it one of the world's best in terms of its properties [1]. Graphene, with this special structure, contains rich and novel physical phenomena, which make it show many excellent properties such as ultra-higqh carrier mobility, good thermal conductivity, excellent mechanical modulus (1 TPa), breaking strength (125 GPa), and also a superior gas barrier, high transparency, and high specific surface area [2]. Moreover, based on these extraordinary properties, graphene showed great potential application prospects and market value in different fields such as transportation, high-frequency electronic devices, flexible display, electrochemical biosensor, new energy battery, supercapacitor, aerospace, biomedical, etc. Graphene can also be used as an ideal nanofiller to reinforce the properties of composites, thus providing a broader application space for composite materials. Even a small amount of graphene addition to composite tends to increase the mechanical, electrical, and processing properties [1-4]. Hence, the addition of graphene into polymer composite has shown improvements of properties compared to pure polymer, significant changes in the mechanical, electrical, and thermal properties were proven, more than in the case of other materials. The polymer nanocomposites modified by graphene can be used in construction, automobile, aerospace, electronic, and medical applications, etc. The interaction between fillers and the polymer matrix at the interface has great importance for the performance of composites [5, 6]. As graphene is hard and very costly to produce, needs a lot of energy, and is difficult to control structure, coupled with other materials especially polymers, different alternatives were found by using modified graphene, such as graphene oxide (GO) and reduced graphene oxide (RGO) (Fig. 1), etc. provided more options which are considered easy to produce and showed a great improvement when combined with polymers. Generally, modified graphene (GO, RGO, etc) coupled with polymers and polymer composites can be possibly reached easily using various

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“…The highly crystalline POSS functionalized to GO has boosted the storage modulus of UP polymer as high as 2600 MPa, which is 32.4% enhancement with regard to pure UP. POSS-GO acts as a reinforcing agent which enables competent stress load transfer, thereby composing stiffness within polymer and enhancing their storage modulus [60]. This has culminated in the enhanced molecular mobility within the UP matrix.…”

Section: Mechanical Properties Of Up/poss-go Nanocompositesmentioning

confidence: 99%

Novel Unsaturated Polyester Nanocomposites via Hybrid 3D POSS-Modified Graphene Oxide Reinforcement: Electro-Technical Application Perspective

et al. 2020

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The latest trends in technologies has shifted the focus to developing innovative methods for comprehensive property enhancement of the polymer composites with facile and undemanding experimental techniques. This work reports an elementary technique to fabricate high-performance unsaturated polyester-based nanocomposites. It focuses on the interactive effect of polyhedral oligomeric silsesquioxanes (POSS)-functionalized graphene oxide (GO) within the unsaturated polymermatrix. The hybrid framework of POSS-functionalized graphene oxide has been configured via peptide bonding between the aminopropyl isobutyl POSS and graphene oxide. The synergistic effect of POSS and graphene oxide paved the way for a mechanism to inculcate a hybrid framework within the unsaturated polyester (UP) via in situ polymerization to develop UP/GO-POSS nanocomposites. The surface-appended POSS within the graphene oxide boosted its dispersion in the UP matrix, furnishing an enhancement in tensile strength of the UP/GO-POSS composites by 61.9%, thermal decomposition temperature (10% mass loss) by 69.8 °C and electrical conductivity by 108 S/m, in contrast to pure UP. In particular, the homogenous influence of the POSS-modified GO could be vindicated in the surging of the limiting oxygen index (%) in the as-prepared nanocomposites. The inclusive property amelioration vindicates the use of fabricated nanocomposites as high-performance nanomaterials in electrotechnical applications.

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How are the thermal properties of polypropylene/graphene nanoplatelet composites affected by polymer chain configuration and size of nanofiller?

Cited by 67 publications

References 56 publications

Effect of POSS-Modified Montmorillonite on Thermal, Mechanical, and Electrical Properties of Unsaturated Polyester Nanocomposites

Effect of POSS-Modified Montmorillonite on Thermal, Mechanical, and Electrical Properties of Unsaturated Polyester Nanocomposites

Graphene Polymer Composites: Review on Fabrication Method, Properties and Future Perspectives

Novel Unsaturated Polyester Nanocomposites via Hybrid 3D POSS-Modified Graphene Oxide Reinforcement: Electro-Technical Application Perspective

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