Methacrylic acid (2-Methyl-2-propenoic acid)

natura fa'ama'i

Methacrylic acid, fa'apu'upu'u MAA, o se fa'alapotopotoga fa'aola.O lenei vai e leai ni lanu, ma'ale'ale, ose ga'o carboxylic ma lona manogi leaga.E solu i vai mafanafana ma fa'afefiloi ma le tele o so'o so'o.Methacrylic acid e gaosia i pisinisi i luga o se fua tele e fai ma mea muamua i ona esters, aemaise lava methyl methacrylate (MMA) ma poly(methyl methacrylate) (PMMA).O le methacrylates e tele fa'aoga, aemaise lava i le gaosiga o polymers ma igoa tau fefa'ataua'iga e pei o Lucite ma Plexiglas.MAA e tupu faanatura i ni vaega laiti i le suauu o le chamomile Roma.

Talosaga

Methacrylic acid e faʻaaogaina i le gaosiga o resini methacrylate ma palasitika.E faʻaaogaina e fai ma Monomer mo resini tetele ma polymers, faʻasologa o meaola.O le tele o polymers e faʻavae i luga o esters o le acid, e pei o le methyl, butyl, poʻo le isobutyl esters.Methacrylic acid ma methacrylate esters e faʻaaogaina e saunia ai le tele o polymers [→ Polyacrylamides ma Poly(Acrylic Acids), → Polymethacrylates].O le Poly(methyl methacrylate) o le polymer muamua i lenei vaega, ma e maua ai le vai-manino, palasitika faigata o loʻo faʻaaogaina i pepa faʻapipiʻi i tioata, faʻailoga, faʻaaliga, ma faʻamalama.

Fa'aletinoform

maninovai

Vasega o Tulaga Lamatia

8

Ola fa'asa

E tusa ai ma lo matou poto masani, e mafai ona teuina le oloa mo le 12 masina mai le aso na tuʻuina atu ai pe a teu i totonu o pusa faʻamaufaʻailoga, puipuia mai le malamalama ma le vevela ma teuina i le vevela i le va o le 5 - 30 ° C.

Tmeatotino masani

Liu liusuavai

12-16 °C (malamalama)

Fa'apuna

163 °C (malamalama)

mafiafia

1.015 g/mL ile 25 °C (malamalama)

ausa mafiafia

>3 (vs ea)

mamafa ausa

1 mm Hg (20 °C)

fa'asino fa'asino

n20/D 1.431(me.)

Fp

170 °F

vevela vevela.

Teu i le +15°C i le +25°C.