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米酥諳新蟲 (小有名氣)
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[求助]
聚乙烯醇的降解機理 已有1人參與
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在聚乙烯醇中分別加入含-OH,-COOH,-NH2等官能團的物質(zhì)后,共混時的降解機理是否與純PVA不同,有哪位大神可以提供相關(guān)文獻? 發(fā)自小木蟲IOS客戶端 |

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新蟲 (小有名氣)

銀蟲 (小有名氣)
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聚乙烯醇降解后有可能形成碳嗎?下面這個反應(yīng)中的碳是聚乙醇分解形成的嗎? C@FeNi3 core/shellstructuredmicrochainswerepreparedbya simplehydrothermalmethod.Typically,1mmolFeCl2 4H2O, 3mmol NiCl2 6H2O and1gpolyvinylalcohol(PVA)weredissolvedin75ml ethyleneglycol.Then5mlN2H4 H2O (80%(v/v)) wasadded.The mixedsolutionwasvigorouslystirredfor30min,andtransferredinto a 100mlTeflon cupandsealedinastainlessautoclave.Theautoclave wasputintoanovenandmaintainedat200 1C for12h,andthenwas allowedtocooldownnaturallytoroomtemperature.Black fluffy powderswereobtainedatthebottomofTeflon cup.The final products weremagneticallyseparatedandwashedwithdistilledwaterand ethanol forthreetimes,respectively.Theproductsweredriedinan ovenat80 1C for12h. |

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