Gabatarwar ƙungiyar acrylate na biyu, ethylene glycol diacrylate (Lamba 15), zuwa 2-hydroxyethyl acrylate (No. 11) bai kawo canji mai yawa a cikin wari ba.Na farko yana nuna kamshin naman kaza, yayin da na karshen yana nuna kamshin naman kaza da gansakuka.Duk da haka, don 1,2-propanediol diacrylate (No. 16) bayan gabatarwar rukuni na biyu na acrylate a cikin acrylic acid-1-hydroxyisopropyl ester (No. 10) / acrylic Acid-2-Hydroxypropyl ester (No. 12). , geranium da ƙananan ƙanshin iskar gas na monoester ya ɓace a cikin abincin diester, kuma warin tafarnuwa da manne ya samo asali a cikin diester.
Daga cikin duk madaidaiciyar sarkar n-alkyl acrylates, ethyl acrylate (Lamba 2) ya nuna mafi ƙarancin ƙamshi, wanda shine kawai 0.83ng/lair.Tare da karuwar tsayin sarkar, ƙofar ya karu kadan, kuma n-butyl acrylate (La'a. 4) ya kai 2.4ng/lair.Koyaya, wannan doka ba koyaushe take tasiri ba, saboda bakin kofa na methyl acrylate (No. 1) tare da mafi guntu sarkar tsakanin monomers huɗu shine mafi girma (11 ng / lair).Idan aka kwatanta da daidaitattun acrylate monomers ethyl acrylate (No. 2) da propyl acrylate (No. 3), vinyl acrylate (No. 5) da propenyl acrylate (A'a. 6) dauke da unsaturated biyu shaidu sun nuna 20 da 3.5 sau ƙananan ƙananan kofa. .Wannan yana nuna cewa gabatarwar biyu da ba a tantance su ba a cikin carbon sarkar za su ƙara yawan kambi mai kamshi da rage tsinkaye.Duk da haka, idan unsaturated biyu bond ba a kan m kungiyar, sakamakon ba a fili.Misali, bakin kofa na acrylic acid-3- (z) pentene ester (Lamba 7) shine kawai (1.3 ng/lair).
Daga cikin dukkanin esters na alkyl acrylate, 2-ethylhexyl acrylate (No. 13) ya nuna mafi girman kofa na 20ng / lair, wanda ke da alaka da rashin ƙarfi tsakanin 2-ethylhexyl da mai karɓa na wari saboda tasirin steric na 2-ethylhexyl.Babban ƙaƙƙarfan ƙamshi na 2-ethylhexyl acrylate da amfani da shi don haɓaka laushi da sassauci na watsawar resin acrylic ya sa ya dace don amfani da ƙari ko comomer a cikin ƙananan suturar wari da adhesives.Duk da haka, hulɗar dogon lokaci tare da 2-ethylhexyl acrylate na iya haifar da ciwon daji ko ciwon daji, kuma yawan warin da yake da shi zai iya zama rashin amfani, saboda ba zai iya gane shi a jikin mutum ba.
Ƙofar ƙamshi na acrylate mai ɗauke da cyclopentane da cyclohexane (Lamba 17 da 18) bai fi ƙasa da na cycloalkyl ba tare da adadin adadin carbon atom.A lokaci guda, ƙaƙƙarfan ƙanshi na cyclopentane acrylate (No. 17) ya kasance sau 30 fiye da na cyclohexane acrylate (No. 18).
Don 2-hydroxyethyl acrylate (No. 11) da 2-hydroxy-n-propyl acrylate (No. 12), gabatarwar hydroxyl a cikin tsarin ya inganta yanayin wari, wanda shine 178 da 106ng / lair bi da bi, wanda ya sanya su. kamshi ba kadan ba.Ana iya ganin irin wannan yanayin daga bambance-bambancen bakin kofa tsakanin sec butyl acrylate (Lamba 8) da 1-hydroxyisopropyl acrylate (No. 10).
Tare da gabatarwar SEC butyl, ƙamshin ƙamshi na acrylate ya ragu sosai zuwa 0.073ng/lair kawai, yana nuna mafi ƙanƙan kofa tsakanin duk acrylates na alkyl, wato, wari mafi ƙarfi.
Daga cikin 20 monomers da aka ƙaddara, 2-methoxyphenyl acrylate (La'a. 19) ya nuna mafi ƙanƙan wari, wanda shine kawai 0.068ng / lair.Ƙofar ƙamshi na 2-methoxyphenyl ester, wanda aka yi amfani da shi sosai a matsayin jigon masana'antar abinci da masana'antar dandano, shine 0.088ng/lair.Wannan yana nuna cewa esters biyu tare da tsarin 2-methoxyphenyl suna taka rawa a cikin mai karɓar wari ɗaya.
Binciken da Patrick Bauer da wasu suka yi kan wadannan 20 acrylate monomers ya nuna cewa gajeriyar sarkar monomers galibi suna nuna wari mai kama da sulfur, iskar gas da tafarnuwa, yayin da masu dogon sarkar monomers suka fi nuna wari irin na namomin kaza, geraniums da karas.Duk acrylate monomers sun nuna ƙarancin ƙamshi kofa, wato duka suna da ƙamshi mai girma.Ƙofar ƙamshi na SEC butyl acrylate da 2-methoxyphenyl acrylate sun kasance marasa ƙarfi musamman, suna nuna wari mafi ƙarfi.2-hydroxyethyl acrylate da 2-hydroxypropyl acrylate suna da mafi girman ƙamshi da ƙamshi mafi ƙamshi.
Lokacin aikawa: Juni-07-2022