pbjs.que.push(function() { if(!isPlusPopupShown()) Polyethylenterephthalat (PET) ist transparent und leichter als Glas. This quality depends on the degree of crystallization and the presence of additives. { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_mpuslot' }}, expires: 60 bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162050', zoneId: '776336', position: 'btf' }}, Although many polymers are hydrocarbons that contain only carbon and hydrogen, other polymers may also contain oxygen, chlorine, fluorine, nitrogen, silicon, phosphorus, and sulfur. { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_mpuslot' }}, Polymer Ambassadors. { bidder: 'ix', params: { siteId: '195466', size: [728, 90] }}, { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_mpuslot' }}, googletag.enableServices(); {code: 'ad_contentslot_2', pubstack: { adUnitName: 'cdo_mpuslot', adUnitPath: '/2863368/mpuslot' }, mediaTypes: { banner: { sizes: [[300, 250], [336, 280]] } }, Download a PDF of this page Science of Plastics Definition Plastics are a group of materials, either synthetic or naturally occurring, that may be shaped when soft and then hardened to retain the given shape. Die Eigenschaften von PU können sehr verschieden sein, je nachdem, welche anderen chemischen Komponenten man zugibt. { bidder: 'appnexus', params: { placementId: '11654150' }}, }, googletag.pubads().enableSingleRequest(); { bidder: 'onemobile', params: { dcn: '8a9690ab01717182962182bb50ce0007', pos: 'cdo_topslot_mobile_flex' }}, const customGranularity = { { bidder: 'ix', params: { siteId: '195455', size: [300, 250] }}, { bidder: 'ix', params: { siteId: '195451', size: [320, 50] }}, bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776156', position: 'atf' }}, This is called "creep.". 'increment': 0.05, "login": { window.ga=window.ga||function(){(ga.q=ga.q||[]).push(arguments)};ga.l=+new Date; The higher the degree of crystallinity, the less light passes through. Although all plastics are in a liquid state at some point in processing and are solid in the finished state, once a thermoset polymer is formed, it cannot be melted and reformed. { bidder: 'ix', params: { siteId: '195455', size: [300, 50] }}, 'max': 8, { bidder: 'sovrn', params: { tagid: '446383' }}, { bidder: 'ix', params: { siteId: '555365', size: [120, 600] }}, { bidder: 'ix', params: { siteId: '195464', size: [160, 600] }}, English Language Learners Definition of plastic (Entry 2 of 2), See the full definition for plastic in the English Language Learners Dictionary, Kids Definition of plastic (Entry 2 of 2), Medical Definition of plastic (Entry 2 of 2), Thesaurus: All synonyms and antonyms for plastic, Nglish: Translation of plastic for Spanish Speakers, Britannica English: Translation of plastic for Arabic Speakers, Britannica.com: Encyclopedia article about plastic. In physics and materials science, plasticity, also known as plastic deformation, is the ability of a solid material to undergo permanent deformation, a non-reversible change of shape in response to applied forces. { bidder: 'ix', params: { siteId: '195467', size: [300, 250] }}, { 'cap': true { bidder: 'ix', params: { siteId: '195465', size: [300, 250] }}, { bidder: 'appnexus', params: { placementId: '19042093' }}, 'cap': true pid: '94' { bidder: 'ix', params: { siteId: '195464', size: [300, 600] }}, { bidder: 'ix', params: { siteId: '195453', size: [300, 250] }}, { bidder: 'ix', params: { siteId: '195453', size: [300, 50] }}, { bidder: 'sovrn', params: { tagid: '346693' }}, For example, the monomers may have a linear arrangement like a long chain of paper clips, although the tetrahedral carbon bonds actually give the chain a zigzag configuration. { bidder: 'openx', params: { unit: '539971069', delDomain: 'idm-d.openx.net' }}, Plasticity, as the name of a science, refers either to mathematical descriptions of what happens in plastic deformation in terms of stresses, strains, and loads or to physical explanations of plastic flow in terms of atoms, crystals, grains, and motions of structural defects (dislocations) within crystals. } 'cap': true googletag.pubads().collapseEmptyDivs(false); { bidder: 'appnexus', params: { placementId: '11654151' }}, bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162050', zoneId: '776340', position: 'btf' }}, { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_topslot' }}]}, { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_rightslot2' }}, Plastic Definition and Composition . { bidder: 'openx', params: { unit: '539971079', delDomain: 'idm-d.openx.net' }}, }], { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_mpuslot_flex' }}, { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_SR' }}, bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162050', zoneId: '776338', position: 'btf' }}, { bidder: 'appnexus', params: { placementId: '11654157' }}, if(pl_p) Eigentlich ist Polystyrol ein transparenter Kunststoff, der hart und empfindlich auf Schläge ist. A polymer is a substance made of many repeating units. { bidder: 'onemobile', params: { dcn: '8a9690ab01717182962182bb50ce0007', pos: 'cdo_btmslot_mobile_flex' }}, { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_topslot' }}]}, { bidder: 'ix', params: { siteId: '195453', size: [320, 50] }}, { bidder: 'ix', params: { siteId: '195452', size: [336, 280] }}, "error": true, Nontoxic polymers may also degrade into chemicals when they are heated. Es wird als Verpackungsfolie für CDs, Bücher, Papiertaschentücher und Tragetaschen verwendet. { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_rightslot' }}]}, dfpSlots['contentslot_2'] = googletag.defineSlot('/2863368/mpuslot', [[300, 250], [336, 280], 'fluid'], 'ad_contentslot_2').defineSizeMapping(mapping_contentslot).setTargeting('cdo_si', '2').setTargeting('sri', '0').setTargeting('vp', 'mid').setTargeting('hp', 'center').addService(googletag.pubads()); In this type of polymerization the monomers join by adding on to the end of the last “mer” in the chain, just like making a chain of paper clips. They are amorphous and considered to have infinite molecular weight. var pbMobileHrSlots = [ Some thermoplastics are amorphous, while some have a partially crystalline structure. Bild: Cjp24/Wikimedia Commons, Die regelmässige, kettenartige Anordnung der chemischen Elemente in Polypropylen (blau: Kohlenstoff, grau: Wasserstoff). { bidder: 'ix', params: { siteId: '195453', size: [300, 250] }}, plastic applies to substances soft enough to be molded yet capable of hardening into the desired fixed form. googletag.pubads().setTargeting("cdo_tc", "resp"); { bidder: 'sovrn', params: { tagid: '446385' }}, They are easily processed, reprocessed, or recycled. ductile metals such as copper malleable applies to what may be pressed or beaten into shape. Their properties can be enhanced by additives. { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_btmslot' }}]}, { bidder: 'appnexus', params: { placementId: '11654156' }}, University of Southern Mississippi, Department of Polymer Science. { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_mpuslot' }}, Es lohnt sich also, die Augen offen zu halten und die Welt der Kunststoffe zu entdecken! Polyvinylchlorid (PVC) ist ein harter und spröder Kunststoff, der weich und formbar werden kann, wenn man Weichmacher und Stabilisatoren hinzugibt. { bidder: 'ix', params: { siteId: '195452', size: [300, 250] }}, "sign-out": "https://dictionary.cambridge.org/us/auth/signout?rid=READER_ID" { bidder: 'openx', params: { unit: '539971080', delDomain: 'idm-d.openx.net' }},