News tagged with plastic
US plastic surgeries rise for second straight year
The number of Americans getting nips and tucks rose in 2011 for the second straight year despite difficult economic times, a major US plastic surgeons' groups said on Thursday.
16 hours ago |
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'Cell assay on a chip': solid results from simple means
(PhysOrg.com) -- The great artist and inventor Leonardo da Vinci once said that "simplicity is the ultimate sophistication." National Institute of Standards and Technology (NIST) research engineer Javier Atencia ...
Chemistry / Analytical Chemistry
Feb 08, 2012 |
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Amazon fungi found that eat polyurethane, even without oxygen
(PhysOrg.com) -- Until now polyurethane has been considered non-biodegradable, but a group of students from Yale University in the US has found fungi that will not only eat and digest it, they will do so even in the absence ...
Feb 03, 2012 |
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Filmmaker sounds alarm over ocean of plastic
On Midway atoll in the North Pacific, dozens of young albatross lie dead on the sand, their stomachs filled with cigarette lighters, toy soldiers and other small plastic objects their parents have mistaken ...
Feb 02, 2012 |
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Venezuelans line up to switch PIP breast implants
(AP) -- The office of plastic surgeon Ignacio Sousa is so packed that women are lined up outside the door. College students in their 20s, housewives in their 40s, middle-class office workers: nearly all are ...
Jan 31, 2012 |
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Eureka! Kitchen gadget inspires scientist to make more effective plastic electronics
One day in 2010, Rutgers physicist Vitaly Podzorov watched a store employee showcase a kitchen gadget that vacuum-seals food in plastic. The demo stuck with him. The simple concept – an airtight seal ...
Jan 27, 2012 |
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Researchers study why metals fail
(PhysOrg.com) -- The eventual failure of metals, such as the aluminum in ships and airplanes, can often be blamed on breaks, or voids, in the material's atomic lattice. They're at first invisible, only microns in size, but ...
Jan 24, 2012 |
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Brazil implant maker in eye of global storm
Brazil's Silimed, the third-biggest manufacturer of silicon breast implants in the world, has suddenly found itself in the eye of a global firestorm.
Jan 21, 2012 |
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'Hundreds' of Austrian women had PIP implants: report
Hundreds of Austrian women, many more than the eight as first thought, may have had potentially dangerous French-made breast implants in cheap operations in eastern Europe, a press report said Sunday.
Jan 15, 2012 |
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Brazil to pay for removal of defective breast implants
The government said Thursday it would pay for surgery on Brazilian women to remove defective French-made and Dutch-made breast implants.
Jan 12, 2012 |
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Products of biotechnological origin using vegetable and fruit by-products generated by the industry
More than 192 million tonnes of fruit and vegetable waste is produced in Europe every year. The continued use of oil as a raw material is a serious obstacle in the way of sustainable industrial development, ...
Jan 12, 2012 |
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Five women in Belgium have had PIP implants removed
Five women in Belgium have had potentially faulty breast implants made by French firm PIP removed since the beginning of December, the country's health watchdog said Saturday.
Jan 09, 2012 |
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Swiss chemists emulate cheese rind to create self-cleaning surface material
(PhysOrg.com) -- Cheese lovers know that the milky white outer coating of Camembert cheese not only serves to offer a tart offset to the pungent inner cheese, but also protects it until ready to be eaten, ...
Jan 09, 2012 |
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Flexible adult stem cells, right there in your eye
In the future, patients in need of perfectly matched neural stem cells may not need to look any further than their own eyes. Researchers reporting in the January issue of Cell Stem Cell, a Cell Press publication, have identi ...
Jan 05, 2012 |
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Brain's connective cells are much more than glue; they also regulate learning and memory
Glia cells, named for the Greek word for "glue," hold the brain's neurons together and protect the cells that determine our thoughts and behaviors, but scientists have long puzzled over their prominence in ...
Dec 29, 2011 |
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Plastic
Plastic is the general common term for a wide range of synthetic or semisynthetic organic amorphous solid materials suitable for the manufacture of industrial products. Plastics are typically polymers of high molecular weight, and may contain other substances to improve performance and/or reduce costs.
The word derives from the Greek πλαστικός (plastikos) meaning fit for molding, and πλαστός (plastos) meaning molded. It refers to their malleability, or plasticity during manufacture, that allows them to be cast, pressed, or extruded into an enormous variety of shapes—such as films, fibers, plates, tubes, bottles, boxes, and much more.
The common word plastic should not be confused with the technical adjective plastic, which is applied to any material which undergoes a permanent change of shape (plastic deformation) when strained beyond a certain point. Aluminum, for instance, is plastic in this sense, but not a plastic in the common sense; while some plastics, in their finished forms, will break before deforming and therefore are not plastic in the technical sense.
There are two types of plastics: thermoplastics and thermosets. Thermoplastics, if exposed to enough heat, will melt. Thermosets will keep their shape until they are charred and burnt. Some examples of thermoplastics are grocery bags, piano keys and some automobile parts. Examples of thermosets are children's dinner sets and circuit boards.
For more information about Plastic, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
