반응 #518089

반응 방정식

methanol

2,2′-Azobis(methyl 2-methylpropionate)

p-tert-butoxystyrene

p-methylstyrene

→

p-tert-butoxystyrene p-methylstyrene

용매

1,4-dioxane

반응 조건

후처리

1. 1
   기타a polymerization reaction at 80° C. for 6 hours under nitrogen gas streams
2. 2
   온도After cooling
3. 3
   기타to precipitate out
4. 4
   여과The precipitated polymer was filtered
5. 5
   세척washed with methanol
6. 6
   기타dried under reduced pressure

실험 절차

2,2′-Azobis(methyl 2-methylpropionate) was added to a mixture of 100 g (0.567 mole) of p-tert-butoxystyrene and 3.54 g (0.03 mole) of p-methylstyrene in 1,4-dioxane, followed by conducting a polymerization reaction at 80° C. for 6 hours under nitrogen gas streams. After cooling, the reaction solution was poured into 5000 ml of aqueous methanol solution to precipitate out. The precipitated polymer was filtered, washed with methanol and dried under reduced pressure to give 92.3 g of poly(p-tert-butoxystyrene/p-methylstyrene) as white powders. A ratio of p-tert-butoxystyrene unit and p-methylstyrene unit was about 95:5 by 1HNMR. Mw was about 20000 and Mw/Mn was 1.90 by GPC measurement using polystyrene as standard.

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