Plastics and Polymers

The idea is to draw a circle (two actually), using the ends of the paperclip to establish the radius of the circle, one pencil to anchor an end of the paperclip as the center of the circle, and a second pencil at the opposite end of the paperclip to draw the circle. Step by step, with the following diagram of characters, where the 'x' shows the place of the pencil that does not move, as the center of the circle, 'y' shows the place of the second pencil that moves to draw the small circle, and 'z' shows the place of the second pencil that moves to large small circle: (x______y)__z) # Place the paperclip on a piece of paper; # Put the first pencil inside the end of the paperclip that has just one loop ('x' above in the diagram). This pencil stays put, and is the center of the circle; # Put the second pencil inside either of the loops at the other end of the paperclip. Move this second pencil to draw a circle.

different erasers are different materials so both. some are made from rubber that comes from trees and others are made syntheticly

That process is called conducting a waste audit. It involves sorting and counting waste materials like plastic bags to understand patterns of consumption and disposal. Results from waste audits can inform strategies for reducing waste and promoting sustainability.

Both condensation polymers and addition polymers are formed through polymerization, a process in which monomers are combined to form larger polymer chains. Additionally, both types of polymers can have high molecular weights and are used in a wide variety of applications.

There is typically only one plastic bag inside another plastic bag, unless they are packaged in multiples.

Branched polymers have side chains or branches extending from the main polymer chain, giving them a more complex and three-dimensional structure. This branching can affect the physical properties of the polymer, such as its flexibility, crystallinity, and viscosity. Branched polymers often exhibit different properties compared to their linear counterparts, making them useful in various applications, such as in adhesives and viscosity modifiers.

Synthetic polymers can cause environmental pollution when they are not properly disposed of. They do not biodegrade easily, leading to accumulation in landfills and natural environments. Additionally, plastic polymers can break down into microplastics, which are widely distributed in ecosystems and can harm wildlife and marine life.

TARGET uses over 10000 bags in a week. I know that's a lot

You can buy it in Artland, in wanchai. its in lockhart center :) they only sell fimo though. if you want a cheaper alternitive, buy it from taobao. their quality isnt as good as fimo, but its cheaper so... ;)

No one card can Special Summon any Fusion Monster. Because some Fusion Monsters specify that they "cannot be Special Summoned except by a Fusion Summon", cards like "Metamorphosis" will not be able to Special Summon them. Even "Instant Fusion" cannot Special Summon Fusion Monsters that state "This card can only be Special Summoned from your Extra Deck by returning the above cards you control to the Deck."

Polyester plastics, ABS, PET, PMMA, nylon, acrylic, and many other plastics are good for laser cutting. The acrylic will cut and leave a polished edge if done properly. ABS is a material used in many parts, including automotive components, and cuts and leaves a good edge. Textiles made of polyester or nylon will cut and seal (not fray) with laser cutting.

Avoid plastics with carbon in them because they can discolor. For example, Lexan is a brand name for polycarbinate material (same as bulletproof glass). As the name polycarbinate indicates, carbon is a part of this material, and carbon can change color or turn black and sticky when laser cut. Thin polycarbinate membrane material can be laser cut well, but quarter inch polycarbinate typically gives bad results.

Avoid plastics like vinyl and PVC because they give off chlorine acid when cut, polyvinyl chloride. The acid will deteriorate the machine and can injure the operator if not exhausted properly.

Some plastics were designed for laser use and thus perform exceptionally well. Rowmark makes a line of plastics that are two color laminates for laser engraving and cutting.

See the related link for laser cut samples.

When plastic is recycled, it is processed and transformed into new products or materials instead of being discarded. This allows for the conservation of resources, reduction in waste, and decreased environmental impact compared to virgin plastic production. Recycled plastic also helps to reduce energy consumption and greenhouse gas emissions associated with plastic manufacturing.

Yes, polymers can be broadly categorized into natural and synthetic polymers. Synthetic polymers can further be classified based on their chemical structure and properties, such as thermoplastics, thermosets, elastomers, and fibers. These classifications help in understanding the different characteristics and applications of polymers.

The plastic thing on a shoelace is called an aglet. It helps to prevent the lace from fraying and makes it easier to thread through the eyelets of a shoe.

The structural formula of polyethylene plastic is (-CH2-CH2-)n, where n represents the number of repeating units in the polymer chain. In this formula, each "CH2" unit represents a single ethylene molecule that has undergone polymerization to form the long-chain polymer structure of polyethylene.

This type of clothing causes excessive loss of water (dehydration) and is particularly dangerous when used in hot humid weather. The best clothing for exercise is loose, comfortable, absorbent and reflects the sun.

Propenonitrile (CH2=CHCN) polymerises to poly(propenonitrile)

Plastic bags can choke animals when they mistake them for food and ingest them, leading to blockages in their digestive systems. Animals may also get entangled in plastic bags, causing them to suffocate or suffer injuries that could be fatal.

The casing of many mobile phones is made from polymer materials, such as polycarbonate or ABS plastic. These polymers are chosen for their durability, impact resistance, and light weight characteristics.

It depends on the specific polymer and the production process involved. Some synthetic polymers can be relatively inexpensive to produce due to large-scale manufacturing processes, while others may be more costly due to factors such as raw material costs or specialized processing requirements.

Wax is a naturally occurring polymer called an ester, which is made up of long-chain hydrocarbons with a carboxylic acid group at one end. It is a solid at room temperature and becomes liquid when heated.

Plastic banknotes have several advantages over paper banknotes.

- They are much more resilient than paper notes, being very difficult to rip or tear.

- They are waterproof.

- They are much more difficult to forge.

The polymer polypropylene, or to be more accurate biaxially oriented polypropylene, is chosen for use in the manufacture of plastic banknotes both because of polypropylenes resistance to most types of solvents and glues and because of it's resilience.

Anything can burn, except for stars. Plastic is one of the easiest things in the world to burn. Though it does give off quite a smelly odor when burned. (though it's actually more pleasant smelling than the burning of rubber)

Which of the following is not a polymer?

A) cellulose

B) glucose

C) starch

D) DNA

E) chitin

Paper is made from materials that are attracted to water. When people wet their fingers they are essentially making paper want to stick to their fingers more, it reduces the chance that they may lose their place when counting and have to start all over again.