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首页> 外文会议>Contemporary science of polymeric materials >Novel Thermoplastic Polyurethane Elastomers Based on Methyl-12-Hydroxy Stearate
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Novel Thermoplastic Polyurethane Elastomers Based on Methyl-12-Hydroxy Stearate

机译：新型基于12-羟基硬脂酸甲酯的热塑性聚氨酯弹性体

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摘要

Novel vegetable oil-based elastomers were prepared from hydrogenated ricinoleic acid methyl esters. Polyester polyol with molecular weight 2500 was synthesized by transesterification of methyl-12-hydroxy stearate and 1,6-hexanediol. Segmented polyurethanes with 50 and 70% soft segment concentration (SSC) were prepared using the prepolymer method by reacting polyester polyol with diphenylmethane diisocyanate (MDI) and 1,4-butanediol as chain extender. Segmented polyurethanes were soluble in polar aprotic solvents such as DMF, DMAc, DMSO and NMP at room temperature. The polymers were characterized by GPC, viscometry and spectroscopic methods. Thermal and mechanical properties of polymers indicated good micro-phase separation. Both soft and hard segment displayed a certain degree of crystallization. While tensile strengths were in the expected range, elongations at break were low presumably due to lower molecular weights.
机译：由氢化蓖麻油酸酯甲酯制备新型植物油基弹性体。通过使-12-羟基硬脂酸甲酯和1,6-己二醇酯交换来合成分子量为2500的聚酯多元醇。使用预聚物方法，通过使聚酯多元醇与二苯基甲烷二异氰酸酯（MDI）和1,4-丁二醇作为增链剂反应，制备具有50％和70％软链段浓度（SSC）的链段聚氨酯。嵌段聚氨酯在室温下可溶于极性非质子传递溶剂，例如DMF，DMAc，DMSO和NMP。聚合物通过GPC，粘度测定法和光谱法表征。聚合物的热和机械性能表明良好的微相分离。软链段和硬链段均显示出一定程度的结晶。尽管抗张强度在预期范围内，但断裂伸长率可能较低，原因可能是分子量较低。

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  • 来源
  • 会议地点 Valletta(MT)
  • 作者

    Omprakash S. Yemul; Zoran S. Petrovic;

  • 作者单位

    Kansas Polymer Research Center, Pittsburg State University, 1701 S. Broadway, Pittsburg, KS 66762;

    Kansas Polymer Research Center, Pittsburg State University, 1701 S. Broadway, Pittsburg, KS 66762;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 TQ050.43;
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  • 入库时间 2022-08-26 14:19:56

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