Acrylate imagwiritsidwa ntchito kwambiri popanga zinthu zosiyanasiyana za polima chifukwa cha kusinthasintha kwake kwa kutentha, kukana kutentha, kukana kukalamba, kuwonekera kwambiri komanso kukhazikika kwamitundu.Zinthuzi zimathandiza kuti zigwiritsidwe ntchito pazinthu zosiyanasiyana, kuphatikizapo mapulasitiki, ma vanishi apansi, zokutira, nsalu, utoto ndi zomatira.Mtundu ndi kuchuluka kwa ma acrylate monomers omwe amagwiritsidwa ntchito zimakhudza kwambiri magwiridwe antchito a chinthu chomaliza, kuphatikiza kutentha kwa magalasi, kukhuthala, kulimba komanso kulimba.Ma polima ochulukirapo oyenera kugwiritsa ntchito mosiyanasiyana atha kupezedwa ndi copolymerization ndi ma monomers okhala ndi magulu a hydroxyl, methyl kapena carboxyl.
Zida zomwe zimapezedwa ndi polymerization ya acrylate monomers zimagwiritsidwa ntchito kwambiri m'makampani, koma ma monomers otsalira nthawi zambiri amapezeka muzinthu za polymeric.Ma monomers otsalirawa sangangoyambitsa kupsa mtima kwa khungu ndi mavuto ena, komanso amachititsa kuti fungo losasangalatsa la mankhwala omaliza chifukwa cha fungo losasangalatsa la monomers awa.
The olfactory dongosolo la thupi la munthu akhoza kumva acrylate monoma mu ndende otsika kwambiri.Pazinthu zambiri za acrylate polima, fungo lazinthu zambiri limachokera ku acrylate monomers.Ma monomers osiyanasiyana ali ndi fungo losiyanasiyana, koma pali ubale wotani pakati pa kapangidwe ka monomer ndi fungo?Patrick Bauer wochokera ku Friedrich Alexander Universit ä t erlangen-n ü rnberg (Fau) ku Germany adaphunzira za mitundu ya fungo ndi fungo lamitundu ingapo ya ma acrylate monomers otsatsa komanso opangidwa.
Chiwerengero cha ma monomers 20 adayesedwa mu kafukufukuyu.Ma monomers awa akuphatikiza malonda ndi ma labotale opangidwa.Mayesowa akuwonetsa kuti fungo la ma monomers atha kugawidwa kukhala sulfure, gasi wopepuka, geranium ndi bowa.
1,2-propanediol diacrylate (No. 16), methyl acrylate (No. 1), ethyl acrylate (No. 2) ndi propyl acrylate (No. 3) makamaka amafotokozedwa ngati fungo la sulfure ndi adyo.Kuphatikiza apo, zinthu ziwiri zomalizazi zimafotokozedwanso kuti zimakhala ndi fungo lopepuka la gasi, pomwe ethyl acrylate ndi 1,2-propylene glycol diacrylate zimakhala ndi fungo la guluu pang'ono.Vinyl acrylate (No. 5) ndi propenyl acrylate (No. 6) amafotokozedwa ngati fungo la mafuta a gasi, pamene 1-hydroxyisopropyl acrylate (No. 10) ndi 2-hydroxypropyl acrylate (No. 12) amafotokozedwa ngati geranium ndi fungo lopepuka la gasi. .N-butyl acrylate (No. 4), 3- (z) pentene acrylate (No. 7), SEC butyl acrylate (geranium, kukoma kwa bowa; No. 8), 2-hydroxyethyl acrylate (No. 11), 4-methylamyl acrylate (bowa, kukoma kwa zipatso; No. 14) ndi ethylene glycol diacrylate (No. 15) amafotokozedwa ngati kukoma kwa bowa.Isobutyl acrylate (No. 9), 2-ethylhexyl acrylate (No. 13), cyclopentanyl acrylate (No. 17) ndi cyclohexane acrylate (No. 18) amafotokozedwa ngati fungo la karoti ndi Geranium.2-methoxyphenyl acrylate (No. 19) ndi fungo la geranium ndi ham yosuta, pamene isomer 4-methoxyphenyl acrylate (No. 20) imafotokozedwa ngati fungo la anise ndi fennel.
Kununkhira kwa ma monomers oyesedwa kunawonetsa kusiyana kwakukulu.Apa, fungo la fungo limatanthawuza kuchuluka kwa zinthu zomwe zimatulutsa chiwopsezo chochepa cha fungo laumunthu, lomwe limadziwikanso kuti "olfactory threshold".Pamwamba pa fungo la fungo, m'munsimu fungo.Zitha kuwoneka kuchokera ku zotsatira zoyesera kuti fungo la fungo limakhudzidwa kwambiri ndi magulu ogwira ntchito kusiyana ndi kutalika kwa unyolo.Pakati pa ma monomers a 20 omwe anayesedwa, 2-methoxyphenyl acrylate (No. 19) ndi SEC butyl acrylate (No. 8) anali ndi fungo lotsika kwambiri, lomwe linali 0.068ng / lair ndi 0.073ng / lair, motero.2-hydroxypropyl acrylate (No. 12) ndi 2-hydroxyethyl acrylate (No. 11) inasonyeza fungo lapamwamba kwambiri, lomwe linali 106 ng / lair ndi 178 ng / lair, motero, kuposa 5 ndi 9 nthawi ya 2-ethylhexyl. akrilate (No. 13).
Ngati pali malo opangira chiral mu molekyulu, mitundu yosiyanasiyana ya chiral imakhudzanso fungo la molekyulu.Komabe, palibe maphunziro opikisana nawo pakadali pano.Unyolo wam'mbali mu molekyulu umakhalanso ndi mphamvu pa fungo la monomer, koma pali zosiyana.
Methyl acrylate (No. 1), ethyl acrylate (No. 2), propyl acrylate (No. 3) ndi ma monomer ena afupiafupi amawonetsa fungo lofanana ndi sulfure ndi adyo, koma fungo lidzachepa pang'onopang'ono ndi kuwonjezeka kwa unyolo kutalika.Pamene kutalika kwa unyolo kumawonjezeka, fungo la adyo lidzachepa, ndipo fungo lina la gasi lidzapangidwa.Kuyamba kwa magulu a hydroxyl mu unyolo wam'mbali kumakhudza kwambiri kuyanjana kwa ma intermolecular, ndipo kudzakhudza kwambiri ma cell omwe amalandira fungo, zomwe zimapangitsa kuti pakhale fungo losiyanasiyana.Kwa ma monomers okhala ndi vinyl kapena propenyl unsaturated double bonds, vinyl acrylate (No. 5) ndi propenyl acrylate (No. 6), amangosonyeza kununkhira kwa mafuta a gaseous.M'mawu ena, kumayambiriro chachiwiri capped unsaturated awiri chomangira kumabweretsa kuzimiririka sulfure kapena adyo fungo.
Pamene tcheni cha kaboni chikuwonjezeka kufika ku maatomu a carbon 4 kapena 5, fungo lodziwika bwino lidzasintha kuchokera ku sulfure ndi adyo kupita ku bowa ndi Geranium.Pazonse, cyclopentanyl acrylate (No. 17) ndi cyclohexane acrylate (No. 18), omwe ali aliphatic monomers, amasonyeza fungo lofanana (geranium ndi karoti fungo), ndipo amasiyana pang'ono.Kuyamba kwa unyolo wa aliphatic sikukhudza kwambiri kununkhira.
Nthawi yotumiza: Jun-07-2022