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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
Can you store mineral spirits in plastic containers?
No, it is not safe to store mineral spirits in plastic containers as they can degrade the plastic and cause leaks or spills. It is recommended to store mineral spirits in metal containers or approved safety cans.
A human being.
Humans are 'electrochemical polymers', as are all other amimated life.
'Polymer' means many monomers.
From Classical Greek
'Poly' means 'many'.
'mer' is the suffix for ; monomer. ( Mono being 'one'.)/.
Eg.
Ethen is a monomer. with the formula 'H2C=CH2' .
There is a 'double bond' between the two carbon atoms.
One of these two bonds breaks open and recombines with another monomer.
H2C=CH2 + H2C=CH2 = -CH2-CH2-CH2-CH2-
This representation is usually shown as -(-CH2-CH2-)- (n)
The 'n' is a number that can be huindreds, thousands or millions of monmers combined to form the chain .
The above example is 'polyethylene' , commonly known as 'polythene'.
Other examples '-(-CHCl-CH2-)-(n) , polyvinylchloride (PVC)
'-(CH(phenyl)-CH2-)-(n) polystyrene.
Why is umbrella handle plastic?
The handle of an umbrella is typically made of plastic due to its durability, lightweight nature, and cost-effectiveness. Plastic materials are able to withstand exposure to the elements, such as rain and sun, without deteriorating quickly. Additionally, plastic can be molded into various shapes and designs, providing ergonomic and comfortable grips for users.
What is Photochromic polymers used for?
Photochromic polymers are used in things like glasses, car windows, and smart windows because they change color or darken when exposed to sunlight. You’ll also find them in UV sensors, cosmetics, and security features for added functionality.
What is the name of a person who makes bags?
A person who makes bags is commonly referred to as a "bag maker" or a "bag designer." The profession can also be known as a "handbag designer" or "artisanal bag maker," depending on the level of craftsmanship and specialization involved in creating the bags. Bag makers may work with various materials such as leather, fabric, or synthetic materials to craft a wide range of bags, from purses and totes to backpacks and briefcases.
Is it ok for your husband to wear your plastic rain bonnet?
I have tried all types of head wear when walking to and from my car , and they either blow off when windy or they let the rain soak through.So one day my wife suggested I try wearing a rain bonnet , but I was not happy with the idea of wearing one with white spots on.So my wife bought me one that was clear pvc with black edging and had a visor , and also extended over the back of my coat collar and I have worn it ever since.I have never had any negative responses from anyone so far , and I have worn one for two years.
Why disposable cups are better then plastic cups?
Disposable cups are a better alternative to plastic cups for several reasons. They are more environmentally friendly, as they are biodegradable and can break down naturally, reducing waste in landfills and oceans. Plastic cups, on the other hand, take hundreds of years to decompose, contributing to pollution. Additionally, disposable cups, especially paper ones, are made from renewable resources, making them a sustainable option for businesses and individuals alike.
Wikas Greencups offers the best disposable cups that are eco-friendly and perfect for various uses. As a trusted paper cup supplier, we provide high-quality, sustainable solutions for all your needs.
What are plastic wood and iron all made up of?
Plastic is made up of polymers, which are long chains of molecules derived from petrochemicals. Wood is made up of cellulose fibers bonded together with lignin. Iron is a metallic element that is primarily composed of iron atoms.
Why does polystyrene melt when in contact with plastic electrical cable insulation?
Isn't polystyrene commonly known as "styrofoam" ?
If so, why is it coming in contact with electrical wiring?
In any event, if the polystyrene is melting, the wiring may be overloaded or has a hotspot due to a failure. The wire may be getting hotter than it should be.
I am not aware of any chemical reaction that would occur if the two plastics touch each other at room temperature.
I am:-
Polystyrene is commonly used in loft and wall insulation, just the places that cables are run. The plasticisers used to make the PVC insulation on the cables flexible reacts with the polystyrene resulting in the polystyrene appearing to 'melt' and the plasticiser migrates out of the cable making it brittle and causing the insulating properties to break down. The cable will eventually fail, especially if disturbed and this is both a fire and electrocution risk.
There is the added problem that the cables will get hotter due to the thermal insulation properties of the polystyrene preventing the cable from losing heat. If this hasn't been allowed for in the design of the circuit it too could be a fire hazard.
The wiring regulations (BS7671 section 522.5.3) prohibits contact between PVC cables and polystyrene, but this is a common problem. An electrical engineer (or most electricians) can do a periodic inspection of your wiring system that includes insulation tests that will identify failed or failing cables. The only solution is to replace damaged cables and reroute them or provide conduit to protect them.
PS Styrofoam is, I believe, an American brand name for polystyrene often associated with disposable coffee cups and similar products.
Why does magnesium bicarbonate required double amount of lime for softening?
Magnesium bicarbonate is a relatively strong base and requires twice as much lime to neutralize it compared to other magnesium compounds.
What type of structure is a foam plastic wing?
Mass I think because foam is not a shell structure or frame.
What is an example of a synthenic polymer?
Nylon is an example of a synthetic polymer. It is a versatile material used in various applications such as textiles, plastics, and industrial components due to its strength, durability, and resistance to wear and tear.
Does breaking monomer cause polymers?
NO!!! You do NOT break monomers.
However, monmers have a carbon/carbon double bond. One bond of this double bond breaks to give two 'loose ends'. These loose ends then combine with the loose ends of another mon0mers to form a polymer.
Monomer + monomer = polymer.
H2C=CH2 + H2C=CH2 = -[-CH2-CH2-CH2-CH2-]-(n)
H2C=CHCl + H2C=CHCl = -[-CH2-CHCl-CH2-CHCl-]-(n)
These polymers are named 'polyethylene/polychloroethen (polythene / PVC).
NB THere are many different polymers.
NB The product polymer is normally written is this way, because in polymerisation thousands if not millions of monomer molecules combine. The 'n' stands for any number in the chain .
Yes, a rubber ball is typically made from synthetic polymers such as polybutadiene or polyisoprene. These polymers give the rubber its elasticity and bounce.
What is the bad effects of polymer or plastics?
Since polypropylene contain only carbon and hydrogen atoms, it does not poison environment after its disposal. However high melting point suggests that deterioration time in the land field will be long. ammendment: really? how exactly will it break down? and what time frame. to say it does not poison the environment after disposal is untrue.
Is the monomers of DNA are nucleic acids?
No, the monomers of DNA are nucleotides, not nucleic acids. Nucleotides are composed of a sugar molecule, a phosphate group, and a nitrogenous base. Nucleic acids are polymers made up of nucleotide monomers, and DNA is a specific type of nucleic acid.
Which metal is used as a catalyst in the ethylene polymerization?
Transition metals such as nickel, chromium, and titanium are commonly used as catalysts in ethylene polymerization reactions. These metals help to initiate and control the polymerization process, leading to the formation of polyethylene with specific properties.
What type of polymer can be described as having only one starting point and one ending point?
A linear polymer, where the monomer units are connected in a straight line, can be described as having one starting point and one ending point. Examples of linear polymers include polyethylene and polypropylene.
Why plastic furniture like doors and stools gaining preference over wooden furniture?
Plastic furniture is lighter, more affordable, and easier to maintain than wooden furniture. It is also more resistant to moisture and other environmental factors, making it a practical choice for outdoor or high-traffic areas. Additionally, plastic furniture can be molded into various designs and colors, offering more versatility in terms of style and aesthetic appeal.
Why plastic furniture is gaining preference against wooden furniture?
Plastic furniture is gaining preference over wooden furniture because it is typically more cost-effective, lightweight, durable, and easy to clean. Plastic furniture is also less prone to damage from weather and insects compared to wooden furniture, making it a popular choice for outdoor use. Additionally, plastic furniture is available in a wide range of designs and colors, offering more versatility in terms of style and aesthetic appeal.
What bond connect monomer of lipids?
The basic building block or monomer of lipids is a fatty acid. Fatty acids consist of a hydrophilic (water-attracting) carboxylic acid group at one end and a hydrophobic (water-repelling) hydrocarbon chain at the other end. These fatty acids can join together through dehydration synthesis to form various types of lipids such as triglycerides, phospholipids, and cholesterol.
Which polymers code for an organism trait?
The trait of an organism is coded for by genes, which are segments of DNA. These genes encode for specific proteins or traits, not polymers. Polymers are large molecules made up of repeating subunits, such as nucleotides in DNA or amino acids in proteins.
Why should you use reusable bags instead of plastic bags?
Using reusable bags helps reduce single-use plastic waste, which is a major contributor to pollution in oceans and landfills. Reusable bags are more durable and can be used multiple times, reducing the overall environmental impact compared to plastic bags. Furthermore, reusable bags help conserve resources and reduce the energy needed to produce and dispose of single-use plastic bags.
