Polymer Nanocomposites - May 2016
This month we're looking at polymer nanocomposites. Polymer nanocomposites have been around for a long time, although it has been in the last 10-15 years where research and usage has burgeoned. Their popularity is widely expected to continue with a number of sources (including Technavio and ReportLinker below) suggesting that the nanocomposites market is set to continue growing at more than 20% per annum over the coming years. This is heavily fuelled by demand from the automotive industry, but there are many different areas where nanocomposites play a critical role. These areas of application are, in fact, seeing a great deal of research with industrial/engineering applications and biomedical/medical applications featuring very heavily, alongside other industries like packaging and electronics. The variety of nano-scale fillers has also increased over recent years, with the addition of options like carbon nanotubes and graphene sparking real interest.
Why not review some of the items we've added to the Polymer Library about Nanocomposites?
These abstracts were highlighted in the May Newsletter and found in the Polymer Library.
Click on the 7-digit accession numbers to find out about ordering a copyright-cleared full text copy of the items shown.
1229333 - Optimization of thermal and mechanical properties of bio-polymer based nanocomposites
This study aimed to improve the thermal properties of some biopolymers composites. Two aliphatic polyesters were used as matrix, the polylactic acid (PLA) and the polybutylene succinate (PBS). The filler used in the composites was expanded graphite (EG) with three different sizes, 5, 50 and 200 (mu) m. Thermal diffusivities were measured by infrared photothermal radiometry (PTR). Model of effective medium approximation (EMA) was used to study the effect on effective thermal conductivity ke of thermal properties of matrix and fillers, the effect of the interfacial thermal resistance ITR between matrix and fillers or the effect of aspect ratio of fillers. Measurement of particles sizes of fillers before and after preparation process shows the presence of small particles, creating lower thermal conductivities than predicted by EMA model. Filtration of EG before process does not allows to increase ke more than 6% because of mechanical stresses of the process. Finally silane functionalisation is used to improve interactions between the fillers and the matrices in order to obtain better thermal conductivities. Mechanical studies on composites are also presented. (16 fig, 3 tab, 30 ref)
Polymer Degradation and Stability, Citation: 127, May 2016, p.105-112, DOI: 10.1016/j.polymdegradstab.2016.01.006
Horny N; Yempab Kanake; Mihai Chirtoc; Tighzert L
1229403 - Development of high-performance resin nanocomposites by resin cellulation using multi-walled carbon nanotubes
This work aims to enhance resin reinforcing performance and thermal resistance through the innovative use of multi-walled carbon nanotubes (MWCNTs) for advanced material applications. The new method, which relied on MWCNT disentanglement under high shear stress, produced resin matrix nanocomposites. The MWCNT/resin nanocomposites showed improved stiffness without significant flexibility loss and did not flow above 160 deg. C. These dramatic improvements may result from the formation of a three-dimensional structure at the MWCNT/resin interface. (10 fig, 5 tab, 52 ref)
Composites Part B: Engineering, Citation: 91, 15 Apr. 2016, p.422-430, DOI: 10.1016/j.compositesb.2015.12.039
Shigeki Inukai; Toru Noguchi; Ken-ichi Niihara; Morio Aoki; Masaharu Miura; Eisuke Yamada; Kenji Takeuchi; Morinobu Endo
1229478 - Critical filler concentration in sulfated titania-added Nafion membranes for fuel cell applications (Open Access - Free PDF Available)
In this communication we present a detailed study of Nafion composite membranes containing different amounts of nanosized sulphated titania particles, synthesised through an optimised one-step synthesis procedure. Functional membrane properties, such as ionic exchange capacity and water uptake (WU) ability will be described and discussed, together with thermal analysis, atomic force microscopy and Raman spectroscopy data. Also electrochemical properties such as proton conductivity and performances in hydrogen fuel cells will be presented. It has been demonstrated that a critical concentration of filler particles can boost the fuel cell performance at low humidification, exhibiting a significant improvement of the maximum power and current density delivered under 30% low-relative humidity (RH) and 70 degC with respect to bare Nafion-based systems. 50 Refs.
Energies, Citation: 9, No.4, Apr. 2016, paper 272, pp.15, DOI: 10.3390/en9040272
Sgambetterra M; Brutti S; Allodi V; Mariotto G; Panero S; Navarra M A
1229566 - Polymer nanocomposites-a comparison between carbon nanotubes, graphene, and clay as nanofillers (Open Access - Free PDF Available)
Nanofilled polymeric matrices have demonstrated remarkable mechanical, electrical, and thermal properties. In this article we review the processing of carbon nanotube, graphene, and clay montmorillonite platelet as potential nanofillers to form nanocomposites. The various functionalisation techniques of modifying the nanofillers to enable interaction with polymers are summarised. The importance of filler dispersion in the polymeric matrix is highlighted. Finally, the challenges and future outlook for nanofilled polymeric composites are presented. 342 Refs.
Materials, Citation: 9, No.4, Apr. 2016, paper 262, pp.35, DOI: 10.3390/ma9040262
1229602 - Emerging trends in graphene carbon based polymer nanocomposites and applications
Recent sustainable advancement in carbon nanotechnology has further broadened the scope of application of carbon based materials, especially graphene based polymer nanocomposites, in emerging applications. This paper mainly focuses on recently emerging trends in synthesis and properties of graphene based polymer nanocomposites, in addition to brief discussion of some selected carbon based nanocomposites for application in electromagnetic interference shielding efficiency, terahertz shielding efficiency, electrostatic dissipation, thermal interface materials, sensors, and energy storage. Finally, an overview of recently emerging trends in sustainability, economies of scale, and emerging commercial market share of these materials is also presented. (294 ref)
Reviews in Chemical Engineering, Citation: 32, No.2, 2016, p.223-264, DOI: 10.1515/revce-2015-0038
Idumah C I; Azman Hassan
Two items covering the Nanocomposites Market:
1225109 - Automotive industry boosts nanocomposites growth (Short Article)
It is briefly reported that the global polymer nanocomposites market will grow by 24% a year until 2019. Technavio believes that four factors will influence this growth: high demand from the automotive industry; stringent regulations on automotive emissions; growing demand from various sectors; and the high consumption of polymer-based clay nanocomposites. The automotive industry currently accounts for almost 70% of total consumption of these materials.
High Performance Plastics, Citation: Mar. 2016, p.11-12
1204857 - Polymer nanocomposites market to grow at a CAGR of over 20% until 2020 (Short Article)
ReportLinker has forecast that the size of the polymer nanocomposites market will grow in terms of value at a CAGR of 21 to 23 percent between 2015 and 2020 to reach 5100 mln U.S. dollars by 2020. Asia-pacific is reported to be holding the largest share in the nanocomposites market in 2014. Further brief information on the nanocomposite market is provided.
Popular Plastics and Packaging, Citation: 60, No.6, June 2015, p.74-75
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