Yuehong Zhang, Qinyang Lei, Shutong Zhang, Langlang Dai, Bin Lyu, Leipeng Liu
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引用次数: 0
摘要
低碳环保型不饱和聚酯热固性塑料的开发已引起广泛关注。本研究采用简单温和的方法,利用可再生蓖麻油和异山梨醇制备了甲基丙烯酸化蓖麻油(MCO)和甲基丙烯酸化异山梨醇(MI)。随后,通过自由基聚合将 MCO 树脂与活性稀释剂 MI 以不同比例固化,制备了多种可持续不饱和聚酯材料(MCO-MI)。评估了 MCO 和 MI 的化学结构、粘度、生物基碳含量和 LD50,并研究了固化 MCO-MI 热固性材料的机械性能、热机械性能、耐溶剂性和生命周期评估(LCA)。结果表明,MCO 和 MI 具有低粘度(746 mPa s 和 4 mPa s)、化学毒性和高生物基碳含量(85.9% 和 76.9%)。当 MCO 与 MI 的质量比为 40:60 时,生成的 MCO-MI 热固性塑料具有最佳的热机械性能,Tg 为 170.2 ℃,拉伸强度为 35.6 MPa。此外,生命周期评估结果表明,与含有苯乙烯的传统石油基不饱和聚酯材料相比,MCO-MI 热固性塑料具有显著的环境效益。这项研究为利用生物基建筑模块制备环保型高性能不饱和聚酯材料提供了深入的见解。
Biobased Unsaturated Polyester Thermosets from Castor Oil and Isosorbide with Life Cycle Assessment
The development of low-carbon and environmentally friendly unsaturated polyester thermosets has attracted widespread attention. In this work, methacrylated castor oil (MCO) and methacrylated isosorbide (MI) were prepared using renewable castor oil and isosorbide by a simple and mild method. Subsequently, a variety of sustainable unsaturated polyester materials (MCO-MI) were prepared by curing MCO resin with the reactive diluent MI in different ratios via free radical polymerization. The chemical structure, viscosity, biobased carbon content, and LD50 of MCO and MI were evaluated, and the mechanical properties, thermo-mechanical properties, solvent resistance, and life cycle assessment (LCA) of the cured MCO-MI thermosets were investigated. The results showed that MCO and MI exhibited low viscosity (746 and 4 mPa s), chemical toxicity, and high biobased carbon content (85.9 and 76.9%). When the mass ratio of MCO to MI was 40:60, the resulting MCO-MI thermosets had the optimum thermo-mechanical property with a Tg of 170.2 °C and a tensile strength of 35.6 MPa. In addition, the LCA results demonstrated that the MCO-MI thermosets had striking environmental benefits over traditional petroleum-based unsaturated polyester materials containing styrene. This work provides insight into the preparation of environmentally friendly and high-performance unsaturated polyester materials employing biobased building blocks.
期刊介绍:
ACS Sustainable Chemistry & Engineering is a prestigious weekly peer-reviewed scientific journal published by the American Chemical Society. Dedicated to advancing the principles of green chemistry and green engineering, it covers a wide array of research topics including green chemistry, green engineering, biomass, alternative energy, and life cycle assessment.
The journal welcomes submissions in various formats, including Letters, Articles, Features, and Perspectives (Reviews), that address the challenges of sustainability in the chemical enterprise and contribute to the advancement of sustainable practices. Join us in shaping the future of sustainable chemistry and engineering.