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Plastics and Polymers
The category should be plastics and polymers. We have a category of metals under chemistry. Plastics and polymers are the fasting growing category of materials. A Styrofoam cup is a plastic or polymer for example.
3,115 Questions
Elasticity in polymers is generally related to the amount of hydrogen bonding between different subunits. Polymers with more hydrogen bonding tend to have higher elasticity. The number of subunits in the polymer chain can also impact elasticity, with longer chains typically leading to more elastic behavior. Additionally, the synthetic composition of the polymer, including the type of monomers and any additives, can affect its tensile strength and overall elasticity.
What is a list of the polymers that are found your body?
Polymers found in the body include proteins (made of amino acids), nucleic acids (DNA and RNA), and carbohydrates (such as glycogen and cellulose). These polymers play important roles in various biological processes, such as providing structural support, storing genetic information, and facilitating communication within cells.
What kind of paint do you use on plastic appliance parts?
For plastic appliance parts, it is best to use a spray paint specifically designed for plastic surfaces. Look for paints labeled as "plastic-safe" or suitable for use on plastic to ensure adhesion and durability on your appliance parts. Sanding the surface lightly before painting can also help the paint adhere better.
What is the plastic around a light switch?
The plastic rectangle thingy around a light switch is generally called a "wall plate." As outlets also have wall plates, the phrase "switch plate" is more descriptive, but less commonly used.
They do not necessarily have to be plastic.
Typically, it is not a polymer, just a large molecule comprises glycol(the back bone) and 3 branches of fatty acids. However, during storage for long time, or heating, it can react to form radicals. These radicals initiate a polymerization reaction. Therefore, deep fried oil contains a lot of polymeric molecules.
Is Keratin a nucleic acid polymer?
No, keratin is not a nucleic acid polymer. Keratin is a structural protein found in hair, nails, and the outer layer of skin. Nucleic acid polymers, such as DNA and RNA, are involved in storing and transmitting genetic information.
How many plastic bags are used per second in the US?
It has been estimated that approximately 1 million bags bags are consumed in the world every minute
If two balloons are rubbed on a wool sweater they should stick to each other?
The balloon has a greater affinity for electrons so it obtains a negative charge after being rubbed against the sweater. The balloon, containing a highly negative charge, sticks to the wall because it is attracted to the positive charges in the wall (opposites attract). After a while, the balloon's extra electrons move to the wall and both objects become neutrally charged. Lacking any significant attraction, the balloon will fall off the wall.
Natural polymers are biodegradable, meaning they can be broken down by bacteria and other organisms in the environment. This process helps to reduce the amount of natural polymers going to landfills. Synthetic polymers, on the other hand, are not easily biodegradable and can persist in the environment for a long time, contributing to landfill waste issues.
Non-polymer refers to a substance that is not made up of long chains of repeating units, known as polymers. Non-polymer materials can be single molecules or consist of smaller, non-repeating units. Examples include metals, ceramics, and some organic compounds.
Where is the plastic used in plastic surgery?
Answer
The original meaning of plastic is something that can be formed and shaped. Plastic surgery is surgery that isn't functionally required, but mainly intended to change how something looks. Has little to nothing to do with the materials that we think of as plastic.
But there is a chance that there is plastic in any implants used.
Answer
No. Plastic surgery is also called cosmetic surgery. Basically, it's surgery that specializes in the reconstruction, altering, or modification of the body. For example: breast implants, chin implants, breast reductions, face lifts, rhinoplasty procedures, or nose jobs, etc..
The word plastic comes from the Greek plastikos which means to sculpt or to form, which is what the plastic surgeon does with the human body. Cosmetic or aesthetic surgery is one branch of plastic surgery; reconstructive surgery is the other.
What are polymers made from chemicals?
A polymer (a chemical term) is any material that is made up of repeating linked units (monomers). An example of a polymer is starch. It is made from linked units of Glucose (a sugar). Another example is plastics such as low density polyethylene made from linking repeating ethylene (a gas) units. Maybe a more familar example that is used around the house is when you repair your car with fiberglass. The liquid that is used to bond the fiberglass to the car and itself is styene monomer. When the catalyst is added to the styrene monomomer you are starting a chemical reaction that joins the monomers into very long polymers that cross link and form a hard polymer.
How do you write a cover letter for a polymer chemist?
To write a cover letter for a polymer chemist position, highlight your experience in polymer chemistry, including any research, projects, or achievements. Mention specific skills such as organic synthesis, polymer characterization, and materials testing. Tailor your cover letter to showcase how your background and skills align with the requirements of the job you are applying for.
Acrylic polymers are compounds produced by bonding acrylic acid or acrylic ester with other molecules. Acrylic polymers utilize the desirable characteristics of acrylic acid and acrylic ester and are used in dispersants, thickeners, adhesives, binders, and paint vehicles.
Why are unsaturated monomers used in addition polymerisation?
Unsaturated monomers are used in addition polymerization because they contain carbon-carbon double bonds that can readily undergo addition reactions to form long polymer chains. This allows for the efficient production of high molecular weight polymers without the formation of byproducts. Additionally, unsaturated monomers grant flexibility to control the properties of the resulting polymer by modifying the monomer structure.
Is polyester thermoplastic or thermosetting?
Polyester resin is a thermosetting resin, generally a copolymer
The value of a 1992 Earth Summit Swatch watch in brand new condition and original packaging can vary, but typically ranges from $50 to $200 depending on factors such as demand, rarity, and overall condition. The self-winding feature may add to the value for collectors interested in this specific model. It's recommended to check online marketplaces or consult with a watch appraiser for a more accurate valuation.
When did leo h backeland invent plastic?
Leo H. Baekeland did not invent plastic, but he did invent Bakelite, the first synthetic plastic, in 1907. Bakelite was a revolutionary material with wide applications in various industries, marking the beginning of the modern plastic era.
Why is the outside of an electrical cable made of plastic?
Cases have been made of wood, various metals, plastic, bakelite, fiberglass, and perhaps others. Plastic is widely used now primarily because of its low cost and ease of forming complex shapes.
