Acrylate e sebelisoa haholo ha ho etsoa lisebelisoa tse fapaneng tsa polymer ka lebaka la ho feto-fetoha ha mocheso o tlase, ho hanyetsa mocheso, ho hanyetsa botsofali, pepeneneng e phahameng le botsitso ba mebala.Lintho tsena li etsa hore e khone ho sebelisoa mefuteng e mengata ea lisebelisoa, ho akarelletsa le lipolasetiki, li-varnish tsa fatše, liaparo, masela, lipente le li-adhesives.Mofuta le palo ea li-acrylate monomers tse sebelisitsoeng li na le tšusumetso e kholo ts'ebetsong ea sehlahisoa sa ho qetela, ho kenyelletsa mocheso oa phetoho ea khalase, viscosity, thata le ho tšoarella.Li-polymer tse ling tse loketseng lits'ebetso tse fapaneng li ka fumanoa ka ho etsa copolymerization le li-monomers tse nang le lihlopha tse sebetsang tsa hydroxyl, methyl kapa carboxyl.
Lisebelisoa tse fumanoang ka polymerization ea acrylate monomers li sebelisoa haholo indastering, empa li-monomers tse setseng li atisa ho fumanoa ka thepa ea polymeric.Li-monomers tsena tse setseng li ka 'na tsa se ke tsa baka feela ho halefa ha letlalo le mathata a mang, empa hape li baka monko o sa thabiseng sehlahisoa sa ho qetela ka lebaka la monko o sa thabiseng oa li-monomers tsena.
Sistimi ea monko oa 'mele oa motho e khona ho utloa acrylate monomer maemong a tlase haholo.Bakeng sa lisebelisoa tse ngata tsa acrylate polymer, monko oa lihlahisoa hangata o tsoa ho li-acrylate monomers.Li-monomers tse fapaneng li na le monko o fapaneng, empa kamano pakeng tsa sebopeho sa monomer le monko ke efe?Patrick Bauer oa Friedrich Alexander Universit ä t erlangen-n ü rnberg (Fau) Jeremane o ile a ithuta mefuta ea monko le monko oa letoto la li-acrylate monomers tse rekisoang le tse entsoeng.
Kakaretso ea li-monomer tse 20 li ile tsa lekoa thutong ena.Li-monomers tsena li kenyelletsa khoebo le laboratori e entsoeng.Teko e bontša hore monko oa monomers tsena o ka aroloa ka sebabole, khase e bobebe, geranium le mushroom.
1,2-propanediol diacrylate (No. 16), methyl acrylate (No. 1), ethyl acrylate (No. 2) le propyl acrylate (No. 3) li hlalosoa haholo-holo e le monko oa sebabole le konofolo.Ntle le moo, lintho tse peli tsa ho qetela li boetse li hlalosoa li na le monko o bobebe oa khase, ha ethyl acrylate le 1,2-propylene glycol diacrylate li na le maikutlo a monko o monyane oa sekhomaretsi.Vinyl acrylate (No. 5) le propenyl acrylate (No. 6) li hlalosoa e le monko oa mafura a khase, ha 1-hydroxyisopropyl acrylate (No. 10) le 2-hydroxypropyl acrylate (No. 12) e hlalosoa e le monko o monate oa geranium le khase e bobebe. .N-butyl acrylate (No. 4), 3- (z) pentene acrylate (No. 7), SEC butyl acrylate (geranium, tatso ea li-mushroom; No. 8), 2-hydroxyethyl acrylate (No. 11), 4-methylamyl acrylate (mushroom, tatso ea litholoana; No. 14) le ethylene glycol diacrylate (No. 15) li hlalosoa e le tatso ea li-mushroom.Isobutyl acrylate (No. 9), 2-ethylhexyl acrylate (No. 13), cyclopentanyl acrylate (No. 17) le cyclohexane acrylate (No. 18) li hlalosoa e le monko oa rantipole le Geranium.2-methoxyphenyl acrylate (No. 19) ke monko oa geranium le ham e tsuba, ha isomer ea eona ea 4-methoxyphenyl acrylate (No. 20) e hlalosoa e le monko oa anise le fennel.
Merero ea monko oa li-monomers tse lekiloeng li bontšitse phapang e kholo.Mona, moeli oa monko o bolela ho tsepamisa mohopolo oa ntho e hlahisang tšusumetso e fokolang ho maikutlo a monko oa batho, o tsejoang hape e le moeli oa ho fofonela.Ha monko o monate o phahame, monko o tlase.E ka bonoa ho tsoa liphellong tsa liteko hore moeli oa monko o angoa haholo ke lihlopha tse sebetsang ho feta bolelele ba ketane.Har'a li-monomers tsa 20 tse lekiloeng, 2-methoxyphenyl acrylate (No. 19) le SEC butyl acrylate (No. 8) e ne e e-na le moeli o tlaase ka ho fetisisa oa monko, e leng 0.068ng / lair le 0.073ng / lair, ka ho latellana.2-hydroxypropyl acrylate (No. 12) le 2-hydroxyethyl acrylate (No. 11) e bontšitse moeli o phahameng ka ho fetisisa oa monko, o neng o le 106 ng / lair le 178 ng / lair, ka ho latellana, ho feta 5 le 9 linako tse ling tsa 2-ethylhexyl. acrylate (No. 13).
Haeba ho na le litsi tsa chiral ka molek'hule, meaho e fapaneng ea chiral le eona e na le tšusumetso monkong oa molek'hule.Leha ho le joalo, ha ho na thuto e qothisanang lehlokoa le eona hajoale.Ketane e lehlakoreng ka molek'hule e boetse e na le tšusumetso e itseng monkong oa monoma, empa ho na le mekhelo.
Methyl acrylate (No. 1), ethyl acrylate (No. 2), propyl acrylate (No. 3) le li-monomers tse ling tse khutšoanyane tsa ketane li bontša monko o tšoanang le sebabole le konofolo, empa monko o tla fokotseha butle-butle ka keketseho ea bolelele ba ketane.Ha bolelele ba ketane bo eketseha, monko oa konofolo o tla fokotseha, 'me monko o mong o bobebe oa khase o tla hlahisoa.Ho kenyelletsoa ha lihlopha tsa hydroxyl ka ketane ea mahlakoreng ho na le tšusumetso ho sebelisana ha li-intermolecular, 'me ho tla ba le tšusumetso e kholo ho lisele tse amohelang monko, tse hlahisang maikutlo a fapaneng a monko.Bakeng sa li-monomers tse nang le li-vinyl kapa propenyl unsaturated habeli, e leng vinyl acrylate (No. 5) le propenyl acrylate (No. 6), li bontša feela monko oa mafura a gaseous.Ka mantsoe a mang, ho kenyelletsoa ha bond ea bobeli ea capped unsaturated habeli ho lebisa ho nyamela ha sebabole kapa monko oa konofolo.
Ha carbon chain e eketseha ho ea ho 4 kapa 5 liathomo tsa carbon, monko o utloahalang o tla fetoha ho tloha sebabole le konofolo ho ea ho mushroom le Geranium.Ka kakaretso, cyclopentanyl acrylate (No. 17) le cyclohexane acrylate (No. 18), e leng aliphatic monomers, li bontša monko o tšoanang (geranium le monko oa rantipole), 'me li fapane hanyenyane.Ho kenyelletsoa ha liketane tsa mahlakoreng a aliphatic ha ho na tšusumetso e kholo maikutlong a monko.
Nako ea poso: Jun-07-2022