Ituaiga polypropylene .

Polypropylene molecules e aofia ai vaega methyl, lea e mafai ona vaevaeina i polypropylene isotactic, polypropylene atactic ma polypropylene syndiotactic e tusa ai ma le faatulagaga o vaega methyl. Pe a faʻatulagaina vaega methyl i le itu e tasi o le filifili autu, e taʻua o le polypropylene isotactic; afai o vaega methyl e tufatufa faʻafuaseʻi i itu uma e lua o le filifili autu, e taʻua o le polypropylene atactic; pe a faʻatulagaina vaega methyl i itu uma e lua o le filifili autu, e taʻua o le syndiotactic. polypropylene. I le gaosiga lautele o le polypropylene resin, o le anotusi o le fausaga o le isotactic (ua taʻua o le isotacticity) e tusa ma le 95%, ma le isi o le atactic poʻo le syndiotactic polypropylene. O le polypropylene resin o loʻo gaosia nei i Saina o loʻo faʻavasegaina e tusa ai ma le faʻamaufaʻailoga faʻafefe ma faʻaopoopoga faʻaopoopo.

Atactic polypropylene ose mea e maua mai i le gaosiga ole isotactic polypropylene. Atactic polypropylene e gaosia i le gaosiga o le isotactic polypropylene, ma le isotactic polypropylene e vavae ese mai atactic polypropylene e ala i se auala vavaeeseina.

O le polypropylene Atactic o se mea e sili ona fa'amama fa'ameamea ma lelei le malosi. E mafai foi ona vulcanized pei o le ethylene-propylene pa'u.