Topic Review
Dolomite as a Filler in a Polymer Composite
Polymers are being used in many applications all around the world. However, there are some drawbacks in the properties of polymers that could hamper their usage in certain applications. Therefore, a new material polymer composite was introduced. A polymer composite is a polymer-based material with the addition of a filler. Many researchers have reported the improvement in the properties of a polymer when a filler was introduced. This helps minimize the disadvantages of using a polymer. Fillers are materials added to resins or binders (polymer/concrete/metal/ceramic) to improve their specific properties as they are turned into a new form of material called a “composite.” Dolomite is a type of sedimentary carbonate rock that consists mainly of dolomite mineral. The use of dolomite in a polymer composite system has gained increasing attention in recent years after researchers successfully proved that it is capable of improving mechanical and physical properties of various polymeric materials. 
  • 63
  • 09 Aug 2022
Topic Review
Waste Rubber Particles
One of the environmental problems causing concern in the world today is the black pollution caused by the accumulation of waste rubber resources. Rubber concrete can help solve the black pollution problem caused by waste rubber tires, but it is undeniable that rubber particles will reduce the mechanical properties of concrete. Research on waste rubber particles, particle size and properties are needed for the modification of rubberized concrete.
  • 74
  • 22 Jul 2022
Topic Review
Self-Healing Mechanisms of Polyurea
Self-healing polymers are categorized as smart materials that are capable of surface protection and prevention of structural failure. Polyurethane/polyurea, as one of the representative coatings, has also attracted attention for industrial applications.
  • 48
  • 20 Jul 2022
Topic Review
Applications of Laser-Induced Graphene Technology
Laser-induced graphene (LIG) technology has received a large amount of attention from scholars and has a wide range of applications in supercapacitors, batteries, sensors, air filters, water treatment and so on. A variety of preparation methods for graphene was summarized . The effects of laser processing parameters, laser type, precursor materials, and process atmosphere on the properties of the prepared LIG were focused. Two strategies for large-scale production of LIG were briefly described. The wide applications of LIG in the fields of signal sensing, environmental protection, and energy storage were discussed.
  • 39
  • 20 Jul 2022
Topic Review
Application of Additional Conductive Layers
Polymer composites are at increasingly used as structural materials replacing metal alloys due to their high strength-to-weight ratio and corrosion resistance. The conductivity of epoxy resin, depending on its type, ranges from 10−17 to 10−12 S/cm, so it is classified as an insulator, i.e., a material with a conductivity below 10−12 S/cm, while carbon fiber is about 6 × 102 S/cm, which allows it to be classified as a semiconductor, i.e., a material whose conductivity is between 10−12 and 103 S/cm. The EP/CF composite, on the other hand, has a conductivity of about 10−4–10−2 S/cm, that is, it also classifies as a semiconductor. The methods to improve the conductivity have been categorized into three groups: modification of the matrix with conductive fillers, modification of the composite reinforcement, and addition of layers with increased electrical conductivity to the composite. 
  • 47
  • 19 Jul 2022
Topic Review
Applications of LDH/Nanocarbon Composites in Heterogeneous Catalysis
Nanocomposites combining layered double hydroxides (LDHs) and carbon-based materials as building blocks deserve great attention as heterogeneous catalysts due to their remarkable efficiency in a large range of reactions of chemical synthesis and conversion such as C-C cross coupling (e.g., aldolisation, Michael, Knoevenagel, Ullman, Sonogashira, Heck, synthesis of chalcone…), oxydation, hydrogenation, higher alcohol synthesis (HAS) and cascade reactions (e.g., Knoevenagel-Michael and oxidation-Knoevenagel).
  • 66
  • 07 Jul 2022
Topic Review
Affecting Erosion Factors
Erosion is a major issue since it results in several problems, such as failure/collapse, the degradation of surfaces, severe accidents, and vulnerabilities in many industrial systems and processes. Surface degradation by erosion is a slow but nevertheless continuous and unpreventable process in numerous industries, such as the oil and gas industry; erosion also affects aircraft, steam engines, and the rotor blades of power plant drive turbines, including wet-steam turbines, as well as other turbine plants that operate on wet steam.
  • 119
  • 05 Jul 2022
Topic Review
Templated Twist Structure Liquid Crystals and Photonic Applications
Twist structure liquid crystals (TSLCs) have attracted increasing attention in photonic applications due to their distinct properties: Bragg reflection, scattering, and optical rotation. However, there exist some issues due to the defects of TSLCs: weak thermal stability, narrow bandwidth, and complicated fabrication. The templating technique which includes device structure, templating process, and photonic properties of templated TSLCs to improve the issues was introduced. Furthermore, a variety of photonic applications including lasing, optical filters and gratings based on TSLCs with polymer templates are presented. Additionally, other applications of TSLCs are briefly introduced. Finally, the remaining challenges and future perspectives of templated TSLCs are proposed.
  • 39
  • 29 Jun 2022
Topic Review
Layered Double Hydroxides and Carbon Materials
The synthesis and applications of composites based on layered double hydroxides (LDHs) and nanocarbons have recently seen great development. On the one hand, LDHs are versatile 2D compounds that present a plethora of applications, from medicine to energy conversion, environmental remediation, and heterogeneous catalysis. On the other, nanocarbons present unique physical and chemical properties owing to their low-dimensional structure and sp2 hybridization of carbon atoms, which endows them with excellent charge carrier mobility, outstanding mechanical strength, and high thermal conductivity.
  • 52
  • 29 Jun 2022
Topic Review
Carbon Nanotubes in Nanocomposite Mixed-Matrix Membranes
Carbon nanotubes (CNTs) are a popular material for gas separation because their walls are naturally smooth, allowing for faster gas transit than other inorganic fillers. It also has excellent mechanical strength, allowing membranes to work under high pressure. Although CNTs have superior qualities to other inorganic fillers, incorporating them into a polymer matrix is difficult due to CNTs' strong van der Waals forces, which cause agglomeration. CNT dispersion must be addressed if the full potential of CNTs is to be realized.
  • 143
  • 17 Jun 2022
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