Can polymers be natural and synthetic?
Examples of synthetic polymers include nylon, polyethylene, polyester, Teflon, and epoxy. Natural polymers occur in nature and can be extracted. Examples of naturally occurring polymers are silk, wool, DNA, cellulose and proteins.
Is plastic a natural or an artificial polymer?
Plastics are a group of materials, either synthetic or naturally occurring, that may be shaped when soft and then hardened to retain the given shape. Plastics are polymers. A polymer can be thought of as a chain in which each link is the “mer,” or monomer (single unit).
What is polymer synthesis?
Polymer synthesis, also called polymerization, is the process by which monomers (small molecules) are covalently bonded to form a (usually long) polymer chain or network.
What are polymers made of?
A polymer is made up of a number of joined-together monomers. One way of thinking about polymers is like a chain of connected-up paperclips. A polymer is a large molecule made up of smaller, joined-together molecules called monomers.
Are polymers bad for you?
Polymers are not as toxic to people as the monomers they contain. But when cut, heated, or manipulated, polymers and their byproducts can release dangerous dust and vapors. Vinyl acetate in EVA may affect the heart, nervous system, and liver. It may reduce fertility in men.
Is wood a natural polymer?
Wood contains natural polymers such as lignin, cellulose, and various hemi- celluloses but has very different properties from the synthetic polymers with which it is most often combined.
Can you eat cotton?
Not Just For Cows Anymore: New Cottonseed Is Safe For People To Eat. Cottonseed is full of protein but toxic to humans and most animals. The U.S. Department of Agriculture this week approved a genetically engineered cotton with edible seeds. They could eventually feed chickens, fish — or even people.
Do models eat cotton balls?
It’s potentially deadly. According to news sources, the cotton ball diet trend emerged in the modeling industry, where women are encouraged to stay dangerously thin in the name of fashion. Eating cotton balls flavored with juice can help them feel full without consuming food.
What do models eat in a day?
“I’ll have Greek yogurt or eggs for breakfast, sushi for lunch, and salmon/chicken/or meat with vegetables and healthy carbs for dinner.” Her snacks throughout the day typically involve peanut butter or almond butter. Of course, she burns off those extra calories with more intense workouts.
What states is it illegal to grow cotton?
Here are the list of states where growing cotton in your garden is illegal: Arkansas, Louisiana, Mississippi, Missouri, Oklahoma, Tennessee, Texas, Alabama, Arizona, California, Florida, Georgia, Kansas, New Mexico, North Carolina, South Carolina, and Virginia.
Why is growing cotton illegal?
Cotton is Illegal to Grow in Some US States This is thanks to a little beetle called Boll Weevil, or more accurately the Boll Weevil eradication programs. The boll weevil feeds on cotton buds and flowers, and can devastate the large scale producers if not aggressively controlled.
Why is it illegal to grow cotton in Florida?
Comments: It is related to commercial cotton, and the USDA attempted to wipe this plant out in Florida in the early 1900s due to the fact that it is a potential host to the boll weevil. It is now illegal to grow wild cotton in Florida for this reason. It is also listed as endangered by the state of Florida.
Can you grow cotton in your backyard?
Not only does it look great in your garden, but it produces fiber that you can spin for thread or yarn and make clothes with. You will need a long growing season, fertile soil, and adequate moisture, plus plenty of heat, particularly later in the season.
What month do you plant cotton?
spring
Does cotton need a lot of water to grow?
Cotton is very drought and heat-tolerant. Cotton does NOT require excessive amounts of water. In fact, cotton uses less water than many other major crops produced in this country. Only 35% of U.S. cotton acreage requires some form of irrigation-the rest of the cotton land is supplied by natural rainfall.
Do cotton plants come back every year?
The cotton plant is by nature a perennial, but is grown as an annual because commercial crops must be turned under each year shortly after harvest to prevent diseases and to help combat the boll weevil.
How long does it take for cotton to fully grow?
Approximately four months
Do people still pick cotton?
cotton plant for soil nutrients, sunlight and water. Since hand labor is no longer used in the U.S. to harvest cotton, the crop is harvested by machines, either a picker or a stripper. Cotton picking machines have spindles that pick (twist) the seed cotton from the burrs that are attached to plants’ stems.
How many bolls does a cotton plant produce?
15-20 bolls
Which fertilizer is best for cotton?
Fertilizer: Cotton crop should be manured with FYM or compost at least once in 3 years at the rate of 12 to 15 tons/ha. The fertilizer dose of (NPK) kg/ha for irrigated cotton; 80 :40:40 (NPK) kg/ha for rainfed cotton hybrids and NPK kg/ha both for desi and hirsutum varieties are recommended.
How deep do cotton roots go?
3 feet
How much is a bale of cotton seed?
Varies by variety but is in the range of 800 to 900 pounds of cottonseed per bale.
How much is a round cotton bale worth?
According to the “Internal Revenue Services” of the United States: a bale of cotton, which is considered to be 500 pounds. The standard cost is $0.70 to $0.80 per bale; an example is an average bale of cotton at 470 pounds = $329.00. Higher quality cotton bales, could be $0.90 to $1.10 per pound.
How many kg is a bale of cotton?
Gin Universal Density Bale*
| Gin Universal Density Bale* | ||
|---|---|---|
| Approximate Values | Units | |
| Net Weight | 500 pounds | 226.8 kg |
| Length | 54-55 inches | 1.37-1.40 m |
| Width | 20-21 inches | 0.51-.53 m |
What is the average weight of a bale of cotton?
495 lbs.
How much is a bale?
Hay bales by the ton.
| Hay grade | Bale type | Min. price/ ton |
|---|---|---|
| Prime | Small square | $192 |
| Large square | $160 | |
| Large round | $120 | |
| Grade 1 | Small square | $160 |
How much is a bale of hay worth?
Straw prices were steady and there is a demand for straw. Small square bales averaged $4.60 a bale (range of $2.00 to $6.00). Large square bale straw averaged $64.00 per bale (a range of $40.00 to $90.00). Large round bale straw averaged $58.00 per bale (a range of $40.00 – $85.00).
How much is a bale in KG?
kilogram