products such as rubber and high resistance metals for the heating element. The stainless steel kettle that has been chosen for this report is made from many of these materials. The materials present in this kettle are stainless steel, copper, thermosetting plastic, rubber and a heating element which is made of a high resistance metal. Stainless steel is one of the materials used in this kettle and is now used more frequently within kettles today because is it impressive properties, one of the main
Product Evaluation: A Hairdryer Introduction. I am a 4th year student in St Patrick's Grammar school Downpatrick studying technology and design for my GCSE. I must do two focused tasks, my first task is a product evaluation, for this task I will be evaluating a hairdryer manufactured by Vidal Sassoon. Justification. I picked this appliance because: Ÿ It is a commonly used household object. Ÿ I have this appliance in my house so I can look at it whilst testing it against my
The effect that this additive has on the polymer in terms of stiffness is that the fillers are very useful because it makes the polymers very strong and stiff. This makes it hard to break. Service life The effect of fillers on polymers is that they are very beneficial because they don’t get ruined for a long time. Glass fillers are the most commonly used fillers in polymers. This is because they last longer and their service
swimwear appear. Therefore with the popularity of the swimming sports and the need for speed, the processing manufacture will be focus on the material used and the innovation of design. For example, develop the structure of the polymer to synthesis better characteristic polymers instead of nylon and spandex. Or find other materials to directly replace the nylon and spandex. Besides in terms of the study of bionics, design the surface of swimwear from other marine life. Furthermore design and manufacture
With up to 150 million tons of plastic being consumed each year since the 1950s, it is clear that this polymer plays a critical role in everyday life (Icpeenvis.nic.in, 2011). A polymer is a substance made from identical monomers (molecules) joined together to form one large molecule (Smith et al., 2006). Plastic is often made from petrochemicals, with thermoplastics and thermosetting polymers being the two forms (Helmenstine, 2016). These are found ubiquitously, from packaging to health care. However
What are Polymers and Copolymers? Polymers are large molecules that are formed of many smaller molecules joined together as sub units, known as monomers. They portray a huge role in society as they tend to make up most plastics used ranging from plastic shopping bags to styrofoam. Polymers can be found naturally an example being DNA the building blocks of life but most usable polymers are man made (American Chemistry Council, n.d). The polymers in plastics widely used by society today are known
three-dimensional polymer networks that swell in water and have diverse applications in biotechnology and biomedicine, including tissue engineering. According to a study cited in reference [216], these materials offer significant advantages over solid matrices made of water-insoluble organic polymers. A well-hydrated environment provides stability and function for immobilized biological cargo, such as enzymes and cells, as noted in reference [218]. A wide range of natural and synthetic polymers can be used
university to reduce my knowledge thirst and a part of my trying to be a scientist by conducting innovative research in the field of technical textile, biomedical textile to produce new product with working over biomaterials, nanotechnology, fiber and polymers. When I am in primary school level I know many inventions of science as well as about Engineer from my father who is also M.Sc in mathematics and from that level I am intended to be a researcher in future. I take decision that always keeping me
A polymer is a large molecule consisting of many smaller subunits known as monomers. There are different types of polymers and many uses for all of them. Even though people may not realize it polymers play an essential role in our everyday life. For polymers range from plastics, PVC, and Styrofoam to key structures in the human body like DNA and proteins which are key components to the human body that makes it possible for each of us to live and be unique. So with out polymers in our body we would
required purposes as hoses, o-ring seals, insulation base product and other many packaging materials []. The main components of technically related NBR comprise of 24-30 wt% of acrylonitrile and include some benefits in contrast to other elastomer like polymers. Such as, good processability, resistance to oils as well as hydrocarbons, especially resistance to hydrocarbons and oils, NBR has wide region of service temperature (from -35 oC up to 100 oC) [1-2]. High density polyethylene (HDPE) is a semi-crystalline
What is a polymer? Polymers are substances containing a hefty amount of structural units joined by the same type of linkage. The minute you hear the word polymers you assume it is manufactured with massive chemical plants. Actually, polymers have been in nature from the start. All living things plants, animals, and people are made of polymers. However, what you do not know is they are different types of polymers the Synthetic ones which use harmful toxins to be synthesized, and are those which are
yarns. Fibers consist of different types of polymers, and all fibers are made of polymers. ("Polymer (chemistry)"). A polymer is a large, or macromolecules formed in a repeated pattern called a monomer. Different polymers have varying properties and this is why some materials are sought after to be used in fabrics and some aren’t ("Polymers in Textile Fibers"). A very important element in most polymers is carbon, as it forms a wide variety of bonds. Polymers are produced biologically in nature, and
The substantial improvement of mechanical properties of polymer nanocomposites can be attributed to high rigidity and aspect ratio of nanoclay combined with good affinity through interfacial interaction between polymer matrix and dispersed nanoclay. It is well reported that polymer nanocomposites have excellent barrier properties against O2, CO2 and water vapor. This depends on the type of clay, i.e., compatibility between clay and polymer matrix, structure of nanocomposites and aspect ratio of clay
EPDM rubber is closely related to ethylene propylene rubber but EPDM rubber is a terpolymer of ethylene, propylene and a diene-component. EPDM is almost similar to Silicone as both are polymers and the cost of EPDM rubber is much lesser than silicone. It is a form of Polyolefin. Polyolefin belongs to the class of polymers which is produced from a simple olefin as a monomer. The main properties of EPDM are its outstanding heat, ozone and weather resistance. It has excellent electrical insulating properties
interpenetration of both polymer and mucin chains to a sufficient depth to create a semi-permanent adhesive bond. The adhesion force increases with the degree of penetration of the polymer chains. This penetration rate depends on the diffusion coefficient, flexibility and nature of the mucoadhesive chains, mobility and contact time. The depth of interpenetration required to produce an efficient bioadhesive bond lies in the range 0.2-0.5 μm. This interpenetration depth of polymer and mucin chains can
Polymer Structure Although the fundamental property of bulk polymers is the degree of polymerization, the physical structure of the chain is also an important factor that determines the macroscopic properties. The terms configuration and conformation are used to describe the geometric structure of a polymer and are often confused. Configuration refers to the order that is determined by chemical bonds. The configuration of a polymer cannot be altered unless chemical bonds are broken and reformed.
It was June of 1907 when he documented the discovery of this entirely synthetic resin’s power. It was the first thermosetting plastic in the world. It was not until February of 1909 that all of his experimenting concluded with the discovery of Bakelite and Baekeland announced it to the American Chemical Society. Semi-commercial production began in 1910 when his daily
synthetic (man-made) material known as a Polymer. A polymer is a chain that is made up of many similar molecular groups, better known as ‘monomers’ that are bonded together. ‘Monomers’ are made up of fourteen Carbon atoms, two Nitrogen atoms, two Oxygen atoms and ten Hydrogen atoms. A single Kevlar polymer chain could possibly have anywhere from one to five million monomers bonded together. A group of polymer chains can be organised together in a fiber. How the polymer chains are put together is important
Moreover in general, the biomaterials can be further categorized into: polymers, metals, ceramics, and composites. 1. Polymers: A great variety of polymers are used as biomaterials in medicine. Their applications vary from facial prostheses to tracheal tubes, from dentures to hip and knee joints and from kidney and liver parts to heart components. Polymeric materials are also used for medical adhesives and sealants and are also used for coatings that perform a range of functions. 2. Metals: As
applications such as bullet-proof vests for law enforcement agents, helmets for military infantries, and as protection from fire. Kevlar is a synthetic (person-made) material known as a polymer. A polymer is a chain made of many similar molecular groups bonded together called monomers. A single Kevlar polymer chain could have anywhere from five to a million segments bonded together. Each Kevlar segment or monomer is a chemical unit that contains 14 carbon atoms, 2 nitrogen atoms, 2 oxygen atoms