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Functionalized graphene nanosheets TRGO and MLG 250, prepared from thermally reduced graphite oxide, represent attractive carbon additives for improving the performance of flame retardant polypropylene (PP-FR).
While graphene has higher elastic modulus and tensile strength than that of graphene oxide, it is the latter’s hydrophilic nature that provides a distinct advantage as a filler in the aqueous processing of polymer nanocomposites.
It is found that these materials can be drawn to a much lesser extent than comparable isotactic polypropylene.
Here, we report an eco-friendly strategy for fabricating the polymer nanocomposites with well-dispersed graphene sheets in the polymer matrix via first coating graphene using polypropylene (PP) latex and then melt-blending the coated graphene with PP matrix.
This study discloses, for the first time, the impact of Graphene Oxide (GO) chemical reduction on structure and performance of a Polyethylene (PE) rich biphasic system, with Polypropylene (PP) representing the morphology tunable micro phase.
The extrapolated physical picture of the graphene-graphene interaction is very similar to that of smaller stacked polycyclic aromatic hydrocarbons.
We demonstrate here that after coating polypropylene (PP) separator with a continuous monolayer graphene, the shuttle effect can be significantly suppressed by limiting the passage of long-chain LiPS.
A new effective method to reduce graphene oxide (GO) in the polypropylene (PP) latex/GO hybrid film by dipping into reducing agent can prevent the aggregating of graphene nanosheets.
polypropylene (PP), as matrix materials, however, there is no reason to expect that such an assumption will be valid.
In the present research, excellent dispersion state of graphene in non-polar polymer of polypropylene is achieved via latex technology.

Related Questions

What are the electrical properties of graphene-polypropylene composite as an electrode compared to traditional electrode materials?5 answersThe electrical properties of graphene-polypropylene (PP) composites as electrodes exhibit significant improvements compared to traditional electrode materials. These composites show enhanced electrical conductivity due to the incorporation of graphene nanofillers, leading to lower percolation thresholds and wider ranges of conductivities. The addition of graphene enhances the conductivity of the shielding material, especially at lower filler contents. Moreover, the structure and morphology of the composites play a crucial role in their electrical properties, with the co-continuous phase structure being highlighted as efficient for conductivity. The developed numerical models and simulations aid in predicting and optimizing the electrical properties of graphene-PP composites, making them promising candidates for electrode applications.
What are the environmental implications of using polypropylene in sachets?5 answersUsing polypropylene in sachets can have significant environmental implications. Polypropylene production processes generate waste streams that impact the environment when not managed efficiently. Improper disposal of polypropylene-based medical masks, which are made of polypropylene, can lead to the release of microplastics into the environment, potentially harming aquatic organisms. Additionally, the degradation of polypropylene materials can result in changes in properties and the generation of surface cracks, affecting the material's longevity and environmental impact. Incorporating recycled polypropylene in blends can help minimize environmental impact by reducing properties' losses and contributing to a more sustainable environment. Therefore, when using polypropylene in sachets, it is crucial to consider waste management, recycling, and the potential for environmental harm from microplastics and degradation products.
What is the effect of polypropylene on the stabilization of clay soil?4 answersPolypropylene has been found to have a positive effect on the stabilization of clay soil. The addition of polypropylene fibers to clay soil has been shown to increase the compressive strength and California Bearing Ratio (CBR) of the soil. The use of polypropylene fibers in combination with other additives such as fly ash, lime, or rice husk ash has been found to further improve the strength and ductility of the soil. The optimal percentage of polypropylene fibers varies depending on the specific study, ranging from 0.25% to 2% by weight of the soil. Overall, the addition of polypropylene fibers to clay soil can enhance its engineering properties and provide economic and environmental benefits.
How does polypropylene dissolve?5 answersPolypropylene dissolves in organic solvents through a process that involves the penetration of solvent molecules into the polymer structure. The rate of dissolution is influenced by factors such as temperature, stirring, and the properties of both the polymer and the solvent. There are two types of dissolution observed: partial dissolution at low temperatures and continuous dissolution at higher temperatures. During the induction period, solvent molecules penetrate the solid polymer to a characteristic depth before steady-state dissolution occurs. The rate-determining stage of dissolution depends on the conditions and can be either the escape of polymer molecules from a solvent-swollen surface layer or the penetration and destruction of crystallites in the solid polymer by the solvent. The Hildebrand solubility parameter is useful in understanding the behavior of polypropylene soaked in different solvents.
How is polypropylene fibre made?5 answersPolypropylene fiber is made through a process called melt spinning. In this process, reactor grade polypropylene is used as the raw material. The polypropylene is typically produced from a metallocene catalyzed process, which involves the use of a metallocene catalyst such as a bridged 2,4 di-substituted indenyl metallocene or a bridged 4-phenyl indenyl metallocene. The polypropylene is heated to a molten state and then extruded to form a fiber preform. The preform is then subjected to spinning at a high speed and subsequent drawing to provide a continuous polypropylene fiber. The draw ratio and speed can be adjusted to produce fibers with different mechanical properties. The resulting polypropylene fiber can have high knot strength and is readily producible at a low cost.
Is graphene similar to asbestos?9 answers