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Bio-Based Non-Isocyanate Urethane Derived from Plant Oil

机译：植物油衍生的生物基非异氰酸酯氨基甲酸酯

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摘要

A new bio-based non-isocyanate urethane was obtained by the reaction of a cyclic carbonate synthesized from a modified linseed oil and an alkylated phenolic polyamine (Phenalkamine) from cashew nut shell liquid. The incorporation of functional cyclic carbonate groups to the triglyceride units of the oil was done by reacting epoxidized linseed oil with carbon dioxide in the presence of a catalyst. Structural changes and changes in molar mass during the carbonation reaction were characterized using infrared spectrometry (FTIR) and chromatography. The aminolysis reaction of the cyclic carbonate with phenalkamine was monitored using real-time FTIR at 80 and 100 ℃, respectively. The decay of the carbonate groups and the appearance of the newly built C=O groups of the urethane linkages were measured in situ through real-time FTIR spectra in dependence on the reaction time. Oscillatory time sweep measurements were used to monitor the viscoelastic properties of the system at 80 and 100 ℃. The time of gelation was determined from rheometric measurements. Changes of the apparent activation energy with respect to the conversion of the reaction were calculated from isothermal measurements using Vyazovkin's free kinetic model.
机译：一种新的生物基非异氰酸酯氨基甲酸酯，是通过由改性亚麻籽油合成的环状碳酸酯与腰果壳液中的烷基化酚多胺（酚胺）反应制得的。通过在催化剂存在下使环氧化亚麻籽油与二氧化碳反应，将官能团环状碳酸酯基团引入油的甘油三酯单元中。使用红外光谱（FTIR）和色谱法表征碳酸化反应过程中的结构变化和摩尔质量的变化。分别在80和100℃实时FTIR监测环状碳酸酯与酚胺的氨解反应。取决于反应时间，通过实时FTIR光谱原位测量碳酸酯基团的衰减和氨基甲酸酯键的新建的C ＝ O基团的出现。振荡时间扫描测量用于监测系统在80和100℃下的粘弹性。凝胶化时间由流变测定法确定。使用维亚佐夫金的自由动力学模型由等温测量值计算出相对于反应转化率的表观活化能的变化。

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  • 来源
    《Journal of Polymers and the Environment》 |2012年第4期|926-931|共6页
  • 作者

    A. R. Mahendran; N. Aust; G. Wuzella; U. Mueller; A. Kandelbauer;

  • 作者单位

    Wood Carinthian Competence Center (W3C), Kompetenzzentrum Holz GmbH, Klagenfurterstrasse 87-89, 9300 St. Veit an der Glan, Austria;

    Chair of Chemistry of Polymeric Materials, University of Leoben, 8700 Leoben, Austria;

    Wood Carinthian Competence Center (W3C), Kompetenzzentrum Holz GmbH, Klagenfurterstrasse 87-89, 9300 St. Veit an der Glan, Austria;

    Wood Carinthian Competence Center (W3C), Kompetenzzentrum Holz GmbH, Klagenfurterstrasse 87-89, 9300 St. Veit an der Glan, Austria;

    School of Applied Chemistry, Reutlingen University, 72762 Reutlingen, Germany;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    plant oil; non-isocyanate urethane; phenalkamine; real-time FTIR; curing kinetics;

    机译：植物油非异氰酸酯氨基甲酸酯;酚胺实时FTIR;固化动力学;

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