A brief history of plastic

1,141,315 views ・ 2020-09-10

TED-Ed


Please double-click on the English subtitles below to play the video.

Prevodilac: Milica Ilic Lektor: Ivana Korom
00:07
Today, plastics are everywhere.
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Plastika je danas svuda.
00:10
All of this plastic originated from one small object—
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Sva ova plastika potiče od jednog malog predmeta
00:14
that isn’t even made of plastic.
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koji čak nije ni napravljen od plastike.
00:17
For centuries, billiard balls were made of ivory from elephant tusks.
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Bilijarske kugle su vekovima pravljene od slonovače.
00:22
But when excessive hunting caused elephant populations to decline
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Međutim, kada je prečest lov
doveo do pada populacije slonova u devetnaestom veku,
00:26
in the 19th century,
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00:27
billiard balls makers began to look for alternatives, offering huge rewards.
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proizvođači bilijarskih kugli počeli su da traže druge mogućnosti,
nudeći velike novčane nagrade.
00:33
So in 1863 an American named John Wesley Hyatt took up the challenge.
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Godine 1863, Amerikanac po imenu Džon Vesli Hajat
prihvatio je izazov.
00:39
Over the next five years, he invented a new material called celluloid,
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Tokom narednih pet godina,
izumeo je novi materijal po imenu celuloid,
00:45
made from cellulose, a compound found in wood and straw.
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napravljen od celuloze, sastojka koji se nalazio u drvetu i slami.
00:50
Hyatt soon discovered celluloid couldn’t solve the billiard ball problem––
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Hajat je ubrzo shvatio da celuloid
neće rešiti problem bilijarskih kugli
00:55
the material wasn’t heavy enough and didn’t bounce quite right.
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jer materijal nije bio dovoljno težak i nije odskakao kako treba.
00:59
But it could be tinted and patterned
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Međutim, mogao je da se boji i ukrašava
01:01
to mimic more expensive materials like coral,
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da bi oponašao skuplje materijale:
koral, kornjačin oklop, ćilibar, sedef.
01:05
tortoiseshell, amber, and mother-of-pearl.
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01:08
He had created what became known as the first plastic.
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Napravio je prvu varijantu plastike.
01:13
The word ‘plastic’ can describe any material made of polymers,
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Reč „plastika” odnosi se na bilo koji materijal
napravljen od polimera, tj. velikih molekula
01:18
which are just the large molecules consisting of the same repeating subunit.
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koji se sastoje od istih podjedinica koje se ponavljaju.
01:22
This includes all human-made plastics,
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Ovde spada sva plastika koju čovek pravi
01:25
as well as many of the materials found in living things.
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kao i mnogi materijali koji se nalaze u živim bićima.
01:28
But in general, when people refer to plastics,
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Ipak, kada kažu plastika,
01:31
they’re referring to synthetic materials.
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ljudi uglavnom misle na sintetičke materijale.
01:34
The unifying feature of these is that they start out soft and malleable
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Zajedničko im je to što su u početku mekani i savitljivi,
01:39
and can be molded into a particular shape.
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i mogu se oblikovati.
01:42
Despite taking the prize as the first official plastic,
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Uprkos tome što je zvanično bio prva plastika,
01:46
celluloid was highly flammable, which made production risky.
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celuloid je bio vrlo zapaljiv, što je činilo proizvodnju rizičnom.
01:50
So inventors began to hunt for alternatives.
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Pronalazači su zato počeli da traže alternative.
01:53
In 1907 a chemist combined phenol—
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Godine 1907, jedan hemičar je kombinovao fenol,
01:57
a waste product of coal tar—
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koji se dobija od katrana,
01:59
and formaldehyde, creating a hardy new polymer called bakelite.
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i formaldehid,
stvorivši tako novi, čvrst polimer po imenu bakelit.
02:04
Bakelite was much less flammable than celluloid and the raw materials
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Bakelit je bio znatno manje zapaljiv od celuloida,
a sirovi materijali od kojih se pravio bili su dostupniji.
02:09
used to make it were more readily available.
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02:12
Bakelite was only the beginning.
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Bakelit je bio samo početak.
02:14
In the 1920s, researchers first commercially developed polystyrene,
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Dvadesetih godina prošlog veka istraživači su izumeli polistiren,
02:19
a spongy plastic used in insulation.
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sunđerastu plastiku korišćenu za izolaciju.
02:23
Soon after came polyvinyl chloride, or vinyl, which was flexible yet hardy.
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Ubrzo je stvoren polivinil hlorid, tj. vinil,
koji je bio savitljiv ali čvrst.
02:29
Acrylics created transparent,
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Akrilom su napravljeni providni, otporni paneli,
02:31
shatter-proof panels that mimicked glass.
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koji su oponašali staklo.
02:34
And in the 1930s nylon took centre stage—
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Tridesetih godina prošlog veka postao je popularan najlon,
02:38
a polymer designed to mimic silk, but with many times its strength.
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polimer dizajniran da oponaša svilu, ali mnogo jači.
02:42
Starting in 1933, polyethylene became one of the most versatile plastics,
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Početkom 1933. godine, polietilen je postao
jedna od najfleksibilnijih vrsta plastike,
02:48
still used today to make everything from grocery bags, to shampoo bottles,
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koja se i dan-danas koristi za kese, boce šampona,
02:53
to bulletproof vests.
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pa i prsluke otporne na metke.
02:56
New manufacturing technologies accompanied this explosion of materials.
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Nove proizvodne tehnologije pratile su stvaranje sve više materijala.
03:00
The invention of a technique called injection-moulding
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Pronalazak kalupljenja
03:04
made it possible to insert melted plastics into molds of any shape,
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omogućio je da se topljena plastika ubaci u kalupe različitih oblika
03:08
where they would rapidly harden.
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gde bi oni brzo očvrsnuli.
03:10
This created possibilities for products in new varieties and shapes—
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To je otvorilo mogućnosti za proizvode raznih vrsta i oblika,
03:15
and a way to inexpensively and rapidly produce plastics at scale.
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ali i način da se plastika brzo i jeftino proizvodi naveliko.
03:20
Scientists hoped this economical new material
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Naučnici su se nadali da će ovaj novi i ekonomičan materijal
03:23
would make items that once had been unaffordable accessible to more people.
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omogućiti da predmeti koji su ranije bili nepristupačni
postanu dostupni ljudima.
03:28
Instead, plastics were pushed into service in World War Two.
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Umesto toga plastika je korišćena
u Drugom svetskom ratu.
03:33
During the war, plastic production in the United States quadrupled.
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Proizvodnja plastike u SAD-u
porasla je četiri puta tokom rata.
Vojnici su nosili kacige i vodootporne kišne mantile
03:38
Soldiers wore new plastic helmet liners and water-resistant vinyl raincoats.
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od plastike.
03:43
Pilots sat in cockpits made of plexiglass, a shatterproof plastic,
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Piloti su sedeli u kabinama
napravljenim od pleksiglasa, vrste otporne plastike,
03:48
and relied on parachutes made of resilient nylon.
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i koristili padobrane od otpornog najlona.
03:52
Afterwards, plastic manufacturing companies
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Nakon toga, proizvođači plastike, koji su iznikli tokom rata,
03:55
that had sprung up during wartime turned their attention to consumer products.
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okrenuli su se ka potrošačkim dobrima.
03:59
Plastics began to replace other materials like wood, glass, and fabric
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Plastika je počela da bude zamena za materijale
kao što su drvo, staklo, tkanina,
04:04
in furniture, clothing, shoes, televisions, and radios.
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u nameštaju, odeći, obući, televiziji, radiju.
04:09
Versatile plastics opened up possibilities for packaging—
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Fleksibilna plastika otvorila je mogućnosti za ambalaže,
04:13
mainly designed to keep food and other products fresh for longer.
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napravljene da bi hrana i drugi priozvodi duže ostali sveži.
04:18
Suddenly, there were plastic garbage bags, stretchy plastic wrap,
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Odjednom je bilo plastičnih kesa za đubre,
rastegljive plastične folije,
04:22
squeezable plastic bottles, takeaway cartons,
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plastičnih boca, kartona za poneti,
04:25
and plastic containers for fruit, vegetables, and meat.
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plastičnih posuda za voće, povrće, meso.
04:30
Within just a few decades, this multifaceted material
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Kroz samo nekoliko decenija ovaj raznovrstan materijal
04:34
ushered in what became known as the “plastics century.”
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započeo je takozvani „vek plastike".
04:38
While the plastics century brought convenience and cost-effectiveness,
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Iako je doneo pogodnosti i ekonomsku isplativost,
04:42
it also created staggering environmental problems.
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takođe je stvorio zapanjujuće ekološke probleme.
04:45
Many plastics are made of nonrenewable resources.
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Puno plastike je napravljeno od neobnovljivih materijala.
04:48
And plastic packaging was designed to be single-use,
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Plastične ambalaže namenjene su za jednokratnu upotrebu,
04:52
but some plastics take centuries to decompose,
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a pojedinim vrstama plastike potrebni su vekovi da se razgrade,
04:56
creating a huge build up of waste.
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što dovodi do gomilanja otpada.
04:59
This century we’ll have to concentrate our innovations on addressing those problems—
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U ovom veku moraćemo biti inovativni u rešavanju ovih problema:
05:04
by reducing plastic use, developing biodegradable plastics,
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tako što ćemo smanjiti upotrebu plastike, napraviti biorazgradivu plastiku
05:08
and finding new ways to recycle existing plastic.
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i naći nove načine da se reciklira već postojeća plastika.

Original video on YouTube.com
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