● Plastic is a term that covers a range of synthetic or semisynthetic polymerization products
They are composed of organic condensation or addition polymers and may contain other substances to improve performance or economics. There are few natural polymers generally considered to be plastics..
Eventually, inventors learned to improve the properties of natural polymers. Natural rubber was sensitive to temperature, becoming sticky and smelly in hot weather and brittle in cold weather. In 1834..
● Cellulosebased plastics celluloid and rayon
Inventors were particularly interested in developing synthetic substitutes for those natural materials that were expensive and in short supply, since that meant a profitable market to exploit. Ivory w..
He continued his investigations and found that the material could be mixed with wood flour, asbestos, or slate dust to create composite materials with different properties. Most of these composition..
The first synthetic rubber polymer was obtained by Lebedev in 1910. Practical synthetic rubber grew out of studies published in 1930 written independently by American Wallace Carothers, Russian scient..
So far, these plastics have proven too costly and limited for general use, and critics have pointed out that the only real problem they address is roadside litter, which is regarded as a secondary iss..
CONSUMER ALERT: do not mix your food container lids. A yogurt container lid is NOT the same as a margarine container lid, even if they look the same. How do I know this? Well, here is my story.We li..
● Plastic Fantastic Recycling of Plastic into steel making
PLASTIC FANTASTICEngineers at the University of N.S.W have come up with a way to reuse plastic waste to produce steel.In Australia, every year over 1,000,000 tonnes of plastic is put into landfill..
● The Benefits of Plastic Fasteners
Plastic fasteners are used where there are conditions in which metal will just not do. Plastic fasteners can be chemicalresistant, corrosionresistant, very strong, heatresistant, nonconductive, im..
● Plastic Surgery A Risky Business
When most of us think of plastic surgery, we contemplate the different things we would or are going to have done: that bump on the nose smoothed down, the perky boobs put in, the fat well have su..