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A plastic bag, poly bag, or pouch is a type of container made of thin, flexible, plastic film, nonwoven fabric, or plastic textile. Plastic bags are used for containing and transporting goods such as foods, produce, powders, ice, magazines, chemicals, and waste. It is a common form of packaging.
Bags can also be made from degradable polyethylene film or from polylactic acid (PLA), a biodegradable polymer derived from lactic acid. [20] However, most degradable bags do not readily decompose in a sealed landfill, [21] and represent a possible contaminant to plastic recycling operations. In general, biodegradable plastic bags need to be ...
Polyethylene was first synthesized by the German chemist Hans von Pechmann, who prepared it by accident in 1898 while investigating diazomethane. [12] [a] [13] [b] When his colleagues Eugen Bamberger and Friedrich Tschirner characterized the white, waxy substance that he had created, they recognized that it contained long −CH 2 − chains and termed it polymethylene.
The Capitol was heavily secured as Congress certified Donald Trump's 2024 election win, four years after the Jan. 6 attack, for which he plans to issue pardons.
HDPE is known for its high strength-to-density ratio. [4] The density of HDPE ranges from 930 to 970 kg/m 3. [5] Although the density of HDPE is only marginally higher than that of low-density polyethylene, HDPE has little branching, giving it stronger intermolecular forces and tensile strength (38 MPa versus 21 MPa) than LDPE. [6]
Lisa Kudrow has revealed that she recently found a note that Matthew Perry left inside a “Friends” prop for her 20 years ago.. The actress told “The Drew Barrymore Show” on Tuesday that ...
Such sources of secondary microplastics include water and soda bottles, fishing nets, plastic bags, microwave containers, tea bags and tire wear. [ 72 ] [ 71 ] [ 73 ] [ 74 ] Both types are recognized to persist in the environment at high levels, particularly in aquatic and marine ecosystems , where they cause water pollution .
We’ll know just how real Kurtis Rourke’s chances of winning the Heisman are on Saturday. The Indiana QB is the co-No. 4 favorite for the award heading into the No. 5 Hoosiers’ gargantuan ...