DL-Lactideua na o le atiina ae ma gaosia, ina ua mavae le tolu faamamaina, mama maualuga, tulaga maualuga, ma le tau sili.
Na o le pau lea o le fale gaosi oloa tele i Saina. E mautinoa le lelei ma le tau e maualalo.
Lactidee leai se lanu manino manino po'o nila tioata, mea liusuavai e 93-95 ℃, faigofie soluble i chloroform, ethanol, insoluble i le vai. Faigofie e hydrolyze ma polymerize.Lactidee mafai ona faʻaaogaina e pei o le gaosiga o fomaʻi maualuga polylactic acid, cyclic esterification agent.
Mo Fa'amatalaga oDL-Lactide:
Igoa o oloa:DL-Lactide
CAS: 95-96-5
MF: C6H8O4
MW: 144.13
EINECS: 202-468-3
Liu liusuavai: 116-119 °C
Mea fa'apuna : 142 °C8 mm Hg(malamalama)
Malosi: 1.186±0.06 g/cm3(Va'ai)
Fp: 180°C
Teuga vevela: 2-8°C
Mo le Faaaogaina oDL-Lactide
DL-Lactidee fa'aaogaina e gaosia ai le 2-hydroxy-propionic acid 1-(1-phenyl-ethoxycarbonyl)-ethyl ester. O lo'o galue o se mea mata'utia taua ma se mea fa'aoga vavalo e fa'aoga i le fa'aogaina o meaola, vaila'au, vaila'au fa'ato'aga ma vali. E a'afia i le enzymatic alcoholysis e maua uma ai le alkyl (R) -lactates ma le alkyl (S,S) -lactyllactates.
DL-Lactidee masani ona faʻaaogaina e avea o se puipui puipui i paʻu manuʻa, poʻo ni taula, faʻailoga poʻo le mata i taotoga, talu ai e faʻaleagaina pe a ma le ono masina i le lactic acid innocuous.
Afai e te manaʻomia, faʻamolemole aua le misia, faʻafeiloaʻi e faʻafesoʻotaʻi i matou, matou te auina atu ia oe le tau sili ona lelei i le taimi lava e maua ai lau suʻesuʻega.
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Taimi meli: Iuni-13-2022