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  2. Chain-growth polymerization - Wikipedia

    en.wikipedia.org/wiki/Chain-growth_polymerization

    It is one of the most developed methods in chain-growth polymerization. Currently, most polymers in our daily life are synthesized by free radical polymerization, including polyethylene, polystyrene, polyvinyl chloride, polymethyl methacrylate, polyacrylonitrile, polyvinyl acetate, styrene butadiene rubber, nitrile rubber, neoprene, etc.

  3. Polystyrene - Wikipedia

    en.wikipedia.org/wiki/Polystyrene

    Polystyrene copolymers are also produced; these contain one or more other monomers in addition to styrene. In recent years the expanded polystyrene composites with cellulose [39] [40] and starch [41] have also been produced. Polystyrene is used in some polymer-bonded explosives (PBX). [citation needed]

  4. Styrene - Wikipedia

    en.wikipedia.org/wiki/Styrene

    Styrene is an organic compound with the chemical formula C 6 H 5 CH=CH 2.Its structure consists of a vinyl group as substituent on benzene.Styrene is a colorless, oily liquid, although aged samples can appear yellowish.

  5. Terrestrial biological carbon cycle - Wikipedia

    en.wikipedia.org/wiki/Terrestrial_biological...

    When animals eat plants, for example, the organic carbon stored in the plants is converted into other forms and utilized inside the animals. The same is true for bacteria and other heterotrophs. Dead plant material in or above soils remains there for some time before being respired by heterotrophs. Thus carbon is transferred in every step of ...

  6. Biodegradable plastic - Wikipedia

    en.wikipedia.org/wiki/Biodegradable_plastic

    The biodegradable polymers used in biomedical applications typically consist of hydrolyzable esters and hydrazones. These molecules, upon external stimulation, go on to be cleaved and broken down. The cleaving activation process can be achieved through use of an acidic environment, increasing the temperature, or by use of enzymes. [82]

  7. NYT ‘Connections’ Hints and Answers Today, Sunday, December 15

    www.aol.com/nyt-connections-hints-answers-today...

    Related: The 26 Funniest NYT Connections Game Memes You'll Appreciate if You Do This Daily Word Puzzle Hints About Today's NYT Connections Categories on Sunday, December 15 1.

  8. The Key to Actually Quitting Bad Habits - AOL

    www.aol.com/key-actually-quitting-bad-habits...

    Psychologists explain the evolutionary role of dopamine, the truth about dopamine detoxes and how you can really put an end to bad habits.

  9. Pentagon Fails 7th Audit in a Row but Hopes To Pass by 2028 - AOL

    www.aol.com/news/pentagon-fails-7th-audit-row...

    Congress required all federal agencies to submit annual financial reports in 1990. The Pentagon finally got around to complying in 2018, and it still hasn't passed an audit.