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首页> 外文期刊>Journal of industrial and engineering chemistry >Synthesis of phenolic resol resins using cornstalk-derived bio-oil produced by direct liquefaction in hot-compressed phenol-water
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Synthesis of phenolic resol resins using cornstalk-derived bio-oil produced by direct liquefaction in hot-compressed phenol-water

机译：利用玉米秸秆衍生的生物油在热压酚水中直接液化合成酚醛酚醛树脂

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摘要

For the synthesis of biomass-based resol resins, cornstalk powders were liquefied in a hot-compressed phenol-water (1:4, wt./wt.) medium at 300-350 °C. It was observed that essentially no phenol was reacted with the cornstalk degradation intermediates during the liquefaction process. The cornstalk-derived bio-oils contained oligomers of phenol and substituted phenols, originated primarily from the lignin component of the cornstalk feedstock. Using the cornstalk-derived bio-oils, resol resins were readily synthesized under the catalysis of sodium hydroxide. The biomass-derived resol resins were brown viscous liquids, possessing broad molecular weight distributions. In comparison with those of a conventional phenol resol resin, the properties of the bio-based resins were characterized by GPC, FTIR, DSC and TGA. The as-synthesized bio-oil resol resin exhibited typical properties of a thermosetting phenol-formaldehyde resin, e.g., exothermic curing temperatures at about 150-160 °C, and an acceptable residual carbon yield of ca 56% at 700 °C for the cured material.
机译：为了合成基于生物质的甲阶酚醛树脂，将玉米秸秆粉末在300-350°C的热压苯酚-水（1：4，wt./wt。）介质中液化。观察到在液化过程中基本上没有苯酚与玉米秸秆降解中间体反应。源自玉米秸秆的生物油包含酚和取代酚的低聚物，主要来自玉米秸秆原料的木质素成分。使用玉米杆衍生的生物油，在氢氧化钠的催化下容易合成可熔酚醛树脂。生物质衍生的可熔酚醛树脂是棕色粘性液体，具有宽的分子量分布。与常规酚醛酚醛树脂相比，该生物基树脂的性能通过GPC，FTIR，DSC和TGA进行了表征。合成后的生物油甲阶酚醛树脂表现出热固性酚醛树脂的典型特性，例如，在约150-160°C时放热固化，在700°C时约56％的残留残余碳收率可用于固化。材料。

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