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A mortar and pestle is a set of two simple tools used to prepare ingredients or substances by crushing and grinding them into a fine paste or powder in the kitchen, laboratory, and pharmacy. The mortar ( / ˈ m ɔːr t ər / ) is characteristically a bowl, typically made of hardwood, metal, ceramic , or hard stone such as granite .
The elastic modulus (Young's modulus) of a filled polymer can be found using the equation below: E = E 0 (1 + 2.5Φ + 14.1Φ 2) [13] where: E 0 = Modulus of unfilled resin or binder Φ = Filler concentration. Polymers with smaller additions of filler follow this equation closely. In general addition of filler materials will increase the modulus.
Using a nonporous ceramic mortar and pestle, a small quantity of the solid sample is ground up until the sample is exceedingly fine and has a glassy appearance. A drop of a mulling agent (see below) is added to the ground solid in the mortar. The mixture is further ground up to acquire a uniform paste with the consistency of toothpaste.
Polymer nomenclature is generally based upon the type of monomer residues comprising the polymer. A polymer which contains only a single type of repeat unit is known as a homopolymer, while a polymer containing two or more types of repeat units is known as a copolymer. [22] A terpolymer is a copolymer which contains three types of repeat units ...
Pharmacist compounding a medication using a mortar and pestle (c. 1923). In the field of pharmacy, compounding (performed in compounding pharmacies) is preparation of custom medications to fit unique needs of patients that cannot be met with mass-produced products.
Synthetic polymers began replacing other chemical binders for soil stabilization in agriculture in the late 20th century. [1] Compared to traditional chemical binders, polymer soil additives can achieve the same amount of strengthening at much lower concentrations – for example, mixtures of 0.5-1% of various biopolymers have strength levels that match or exceed those of 10% cement mixtures ...
Polymer engineering is generally an engineering field that designs, analyses, and modifies polymer materials. Polymer engineering covers aspects of the petrochemical industry, polymerization, structure and characterization of polymers, properties of polymers, compounding and processing of polymers and description of major polymers, structure property relations and applications.
Compared to other composite materials used in seismic retrofitting such as fibre-reinforced polymers (FRP), [5] the fibre sheets are replaced by open-grid textiles and the epoxy resin is replaced by mortar. The synergy between the materials is mainly achieved due to a mechanical interlock forming between the textile layers and the mortar.
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