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Methanolysis and Hydrolysis of Polycarbonate Under Moderate Conditions

机译：中等条件下甲醇的甲醇分解和水解

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摘要

Alkali-catalyzed methanolysis and hydrolysis of polycarbonate (PC) in a solvent in which PC can substantially dissolve such as N-methyl-2-pyrrolidone, 1,4-dioxane, tetrahydrofuran and so on were studied. Reaction conditions were optimized for the purpose of recycling PC in the form of bisphenol A and carbon carbonate. The results showed that both the methanolysis and hydrolysis of PC could take place under moderate conditions. Under the conditions of reaction temperature 40 ℃, m(PC):m(MeOH) =1:1, m(PC):m(NaOH) = 50:1, reaction time 35 min and using tetrahydrofuran as solvent, the methanolysis conversion of PC was almost 100% and the yield of bisphenol A was over 95%. Moreover, under the conditions of reaction temperature 100 ℃, m(PC):m(H_2O) = 1:0.7, m(PC):m(NaOH) = 10:1, reaction time 8 h and using 1,4-dioxane as solvent, the hydrolysis conversion of PC was almost 100% and the yield of bisphenol A was over 94%.
机译：研究了碱能甲醇分解和聚碳酸酯（PC）在能基本溶解PC的溶剂（例如N-甲基-2-吡咯烷酮，1,4-二恶烷，四氢呋喃等）中的水解。为了使PC以双酚A和碳酸碳的形式循环利用，优化了反应条件。结果表明，PC的甲醇分解和水解均可在中等条件下进行。反应温度为40℃，m（PC）：m（MeOH）= 1：1，m（PC）：m（NaOH）= 50：1，反应时间为35分钟，以四氢呋喃为溶剂，甲醇分解转化PC的收率几乎为100％，双酚A的收率超过95％。此外，在反应温度为100℃的条件下，m（PC）：m（H_2O）= 1：0.7，m（PC）：m（NaOH）= 10：1，反应时间8 h，并使用1,4-二恶烷作为溶剂，PC的水解转化率接近100％，双酚A的收率超过94％。

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  • 来源
    《Journal of Polymers and the Environment》 |2009年第3期|208-211|共4页
  • 作者

    Fu-Sheng Liu; Zhuo Li; Shi-Tao Yu; Xiao Cui; Cong-Xia Xie; Xiao-Ping Ge;

  • 作者单位

    College of Chemical Engineering, Qingdao University of Science and Technology, 266042 Qingdao, China;

    College of Chemical Engineering, Qingdao University of Science and Technology, 266042 Qingdao, China;

    College of Chemical Engineering, Qingdao University of Science and Technology, 266042 Qingdao, China;

    College of Chemical Engineering, Qingdao University of Science and Technology, 266042 Qingdao, China;

    College of Chemical Engineering, Qingdao University of Science and Technology, 266042 Qingdao, China;

    College of Chemical Engineering, Qingdao University of Science and Technology, 266042 Qingdao, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    polycarbonate; bisphenol a; methanolysis; hydrolysis;

    机译：聚碳酸酯双酚a;甲醇分解水解;

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