The results showed that the substitution degree (DS) increased but the yield decreased with increasing the reaction temperature and time, the acetic anhydride-cellulose wt ratio and catalyst concn.
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结果表明:随着反应时间、反应温度、醋酸酯与纤维素质量比和催化剂用量的提高,其取代度DS增大,但产率降低。
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