一项研究从索尔比托尔合成异体,用于材料应用,使用异体二甲酸盐来增强生物基树脂
Vojtěch Jašek1, Jan Fučík2, Jiří Krhut1
1Institute of Materials Chemistry, Faculty of Chemistry, Brno University of Technology, 61200 Brno, Czech Republic.
Polymers
|September 9, 2023
概括
这项研究优化了异类二甲基酸盐 (ISDMMA) 的合成,这是一种生物基交叉链接剂. 将ISDMMA添加到可再生树脂中显著改善了它们的机械性能和热稳定性.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 可持续化学 可持续化学
背景情况:
- 生物基交叉连接器对于开发可持续可治愈材料至关重要.
- 来自可再生异化物 (ISD) 的异化物二甲酸盐 (ISDMMA) 为合成交叉链接剂提供了一个有希望的替代品.
研究的目的:
- 为了优化异酸盐 (ISD) 和其衍生品异酸盐二甲酸盐 (ISDMMA) 的合成.
- 评估ISDMMA作为生物源可治性树脂中的交叉链接剂的性能提升.
主要方法:
- 优化的ISD合成条件 (130°C,1%p-TSA) 产生了81.9%的产量.
- 通过用甲烯酸化物 (MAA) 进行核替代合成ISDMMA,达到94.1%的转化率.
- 使用FT-IR,MS,1H NMR和XRD进行ISD和ISDMMA的特征.
- 评估了ISDMMA的治愈性 (DSC) 和热稳定性 (TGA).
- 将ISDMMA纳入生物基树脂前体 (M3HBMMA,E3HBMMA) 并通过光启动进行固化.
- 评估的机械性能 (DMA),包括储存模量 (E'),玻璃过渡温度 (Tg) 和交联密度 (ν).
主要成果:
- 确定了最佳的ISD合成条件.
- 成功合成并对高纯度的ISDMMA进行了表征.
- 伊斯德玛显示出良好的治愈性 (E = 146.2 kJ/mol) 和耐热性 (T = 168.9).
- 加入ISDMMA显著提高了生物基树脂的储存模块,玻璃过渡温度和交联密度.
结论:
- 优化的合成路径为生产ISDMMA提供了一种可行的方法.
- 生物基ISDMMA有效地提高了可再生树脂的性能.
- 伊斯德玛是先进材料应用的有希望的可持续交叉连接器.
相关概念视频
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The acid-catalyzed addition of water to the double bond of alkenes is a large-scale industrial method used to synthesize low-molecular-weight alcohols. An acidic atmosphere is required to allow the hydrogen in the water molecule to act as an electrophile and attack the double bond in an alkene. The addition of a proton to the double bond creates a carbocation intermediate. The proton preferentially bonds to the less substituted end of the double bond to create a more stable carbocation...
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