I-Acrylate isetyenziswa kakhulu ekwenzeni izinto ezahlukeneyo zepolymer ngenxa yokuguquguquka kobushushu obuphantsi, ukumelana nobushushu, ukumelana nokwaluphala, ukungafihlisi okuphezulu kunye nokuzinza kombala.Ezi zakhiwo zivumela ukuba zisetyenziswe kuluhlu olubanzi lwezicelo, kubandakanywa iiplastiki, i-varnishes yomgangatho, iingubo, iingubo, iipende kunye ne-adhesives.Uhlobo kunye nesixa se-acrylate monomers esetyenzisiweyo sinempembelelo enkulu ekusebenzeni kwemveliso yokugqibela, kubandakanywa ubushushu beglasi yokutshintsha, i-viscosity, ukuqina kunye nokuqina.Iipolymers ezingakumbi ezifanelekileyo kwizicelo ezahlukeneyo zinokufunyanwa ngokucofa kunye ne-monomers kunye ne-hydroxyl, i-methyl okanye amaqela asebenzayo e-carboxyl.
Izinto ezifunyenwe yi-polymerization ye-acrylate monomers zisetyenziswa kakhulu kumashishini, kodwa ii-monomers ezishiyekileyo zihlala zifumaneka kwizinto ze-polymeric.Ezi monomers ezishiyekileyo azinakubanga kuphela ukucaphuka kwesikhumba kunye nezinye iingxaki, kodwa zinokubangela ivumba elibi kwimveliso yokugqibela ngenxa yevumba elibi kwezi monomers.
Inkqubo yevumba lomzimba womntu inokuva i-acrylate monomer ekugxininiseni okuphantsi kakhulu.Kwizinto ezininzi ze-acrylate polymer, ivumba leemveliso livela ikakhulu kwi-acrylate monomers.Iimonomers ezahlukeneyo zinevumba elihlukeneyo, kodwa yintoni ubudlelwane phakathi kwesakhiwo se-monomer kunye nevumba?UPatrick Bauer waseFriedrich Alexander Universit ä t erlangen-n ü rnberg (Fau) eJamani uphonononge iintlobo zevumba kunye nevumba elibi loluhlu lweemonomers zeacrylate ezirhwebayo kunye nezenziweyo.
Iyonke i-20 monomers yavavanywa kolu phononongo.Ezi monomers ziquka urhwebo kunye nelebhu ezidityanisiweyo.Uvavanyo lubonisa ukuba ivumba lale monomers lingahlulwa libe yisulfure, igesi ekhaphukhaphu, igeranium kunye nekhowa.
I-1,2-propanediol diacrylate (No. 16), i-methyl acrylate (iNo. 1), i-ethyl acrylate (iNo. 2) kunye ne-propyl acrylate (No. 3) zichazwa ngokukodwa njenge-sulfure kunye ne-garlic evumba.Ukongeza, ezi zinto zimbini zokugqibela zikwachazwa ngokuba nephunga legesi elilula, ngelixa i-ethyl acrylate kunye ne-1,2-propylene glycol diacrylate inombono wevumba elincinci leglue.I-Vinyl acrylate (No. 5) kunye ne-propenyl acrylate (No. 6) ichazwa njengevumba le-gas fuel, ngelixa i-1-hydroxyisopropyl acrylate (No. 10) kunye ne-2-hydroxypropyl acrylate (No. .I-N-butyl acrylate (No. 4), 3- (z) pentene acrylate (No. 7), SEC butyl acrylate (geranium, mushroom flavour; No. 8), 2-hydroxyethyl acrylate (No. 11), 4-methylamyl i-acrylate (i-mushroom, i-flavour fruit; No. 14) kunye ne-ethylene glycol diacrylate (No. 15) ichazwa njenge-mushroom flavour.I-Isobutyl acrylate (No. 9), i-2-ethylhexyl acrylate (No. 13), i-cyclopentanyl acrylate (No. 17) kunye ne-cyclohexane acrylate (No. 18) ichazwa njenge-carrot kunye ne-Geranium ivumba.I-2-methoxyphenyl acrylate (No. 19) ivumba legeranium kunye ne-ham yokutshaya, ngelixa i-isomer yayo ye-4-methoxyphenyl acrylate (No. 20) ichazwa njengephunga le-anise kunye nefennel.
Imida yevumba le-monomers evavanyiweyo yabonisa umahluko omkhulu.Apha, i-odor threshold ibhekiselele kugxininiso lwento evelisa ubuncinci be-stimulus kwimbono yevumba lomntu, eyaziwa ngokuba yi-olfactory threshold.Ukuphakama komgubasi wevumba, iyancipha ivumba.Inokubonwa kwiziphumo zovavanyo ukuba umyinge wevumba uchaphazeleka ngakumbi ngamaqela asebenzayo kunobude bekhonkco.Phakathi kwee-monomers ze-20 ezivavanyiweyo, i-2-methoxyphenyl acrylate (No. 19) kunye ne-SEC butyl acrylate (No. 8) yayinomlinganiselo ophantsi we-odor, owawuyi-0.068ng / lair kunye ne-0.073ng / lair, ngokulandelanayo.I-2-hydroxypropyl acrylate (No. 12) kunye ne-2-hydroxyethyl acrylate (No. 11) ibonise i-odor threshold ephezulu, eyayiyi-106 ng / lair kunye ne-178 ng / lair, ngokulandelanayo, ngaphezu kwe-5 kunye ne-9 amaxesha e-2-ethylhexyl. iacrylate (No. 13).
Ukuba kukho amaziko e-chiral kwi-molecule, izakhiwo ze-chiral ezahlukeneyo nazo zinempembelelo kwiphunga le-molecule.Nangona kunjalo, akukho sifundo esiphikisanayo okwangoku.Ikhonkco elisecaleni kwimolekyuli likwanefuthe elithile kwivumba le-monomer, kodwa kukho okungafaniyo.
I-Methyl acrylate (No. 1), i-ethyl acrylate (iNombolo ye-2), i-propyl acrylate (iNombolo ye-3) kunye nezinye ii-monomer ze-chain chain ezimfutshane zibonisa iphunga elifanayo ne-sulfure kunye negalikhi, kodwa iphunga liya kuncipha ngokuthe ngcembe ngokunyuka kobude bekhonkco.Xa ubude bekhonkco bunyuka, ivumba legalikhi liya kuncipha, kwaye iphunga elithile legesi elilula liya kuveliswa.Ukuqaliswa kwamaqela e-hydroxyl kwi-chain chain kunempembelelo kwintsebenziswano ye-intermolecular, kwaye iya kuba nefuthe elikhulu kwiiseli ezifumana iphunga, okubangela ukuvumba okuhlukeneyo.Kuma-monomers ane-vinyl okanye i-propenyl unsaturated double bonds, okuyi-vinyl acrylate (No. 5) kunye ne-propenyl acrylate (No. 6), ibonisa kuphela iphunga le-gaseous fuel.Ngamanye amazwi, ukuqaliswa kwesibini se-capped unsaturated bond ephindwe kabini kukhokelela ekunyamalale kwesulfure okanye ivumba legalikhi.
Xa i-carbon chain inyuswa ukuya kwi-4 okanye i-5 i-athomu ye-carbon, iphunga elibonakalayo liya kutshintsha ngokucacileyo ukusuka kwisulfure kunye negalikhi ukuya kwi-mushroom kunye neGeranium.Ngokubanzi, i-cyclopentanyl acrylate (iNombolo ye-17) kunye ne-cyclohexane acrylate (iNombolo ye-18), eyi-aliphatic monomers, ibonisa iphunga elifanayo (i-geranium kunye ne-carrot odor), kwaye zihluke kancinci.Ukuqaliswa kwamatyathanga e-aliphatic ecaleni ayinayo impembelelo enkulu kwimvakalelo yokuvumba.
Ixesha lokuposa: Jun-07-2022