Panchal Uday, Chaudhary Mayankkumar L, Patel Pratik, Patel Jainishkumar, Gupta Ram K
Department of Chemistry, Pittsburg State University, 1701 S Broadway Street, Pittsburg, Kansas 66762, United States.
National Institute for Materials Advancement, Pittsburg State University, 1204 Research Road, Pittsburg, Kansas 66762, United States.
ACS Omega. 2024 Feb 21;9(9):10738-10747. doi: 10.1021/acsomega.3c09650. eCollection 2024 Mar 5.
One possible approach to achieving sustainable development in the materials sector is to produce polymers from plant oils (POs), which are renewable and environmentally beneficial. Polymers with a high concentration of functional groups can be used as cross-linking agents to enhance the properties of epoxidized POs (epoxidation of plant oil)-based polymers. In this work, a unique resin with novel properties and potential uses was produced by cross-linking epoxidized soybean oil (ESO) with branched and flexible polyamines by ring-opening and amidation polymerizations. This approach is straightforward and ecologically benign. After curing, melamine pentane diamine (MPD) polymer maintained its position as the strongest structural adhesive among the synthesized resins, with a bonding strength of almost 2000 kPa for stainless steel; irrespective of the temperature, stainless steel consistently outperforms melamine ethylene diamine-ESO resin in strength comparisons. At 100 °C, stainless steel has a lap shear strength of about 300 kPa, which is far higher than copper and aluminum; at 180 °C, this value increases by another 750 kPa. While MPD-ESO resin has a shear strength of 1996 kPa at 180 °C, melamine butane diamine-ESO resin has a shear strength of only 1220 kPa.
在材料领域实现可持续发展的一种可能方法是用植物油（POs）生产聚合物，植物油可再生且对环境有益。具有高官能团浓度的聚合物可用作交联剂，以增强基于环氧化植物油（PO环氧化）聚合物的性能。在这项工作中，通过开环和酰胺化聚合反应，将环氧化大豆油（ESO）与支化且柔性的多胺交联，制备出了一种具有新颖性能和潜在用途的独特树脂。这种方法简单直接且对生态环境友好。固化后，三聚氰胺戊二胺（MPD）聚合物在合成树脂中保持其作为最强结构粘合剂的地位，对不锈钢的粘结强度近2000kPa；在强度比较中，无论温度如何，不锈钢始终优于三聚氰胺乙二胺-ESO树脂。在100℃时，不锈钢的搭接剪切强度约为300kPa，远高于铜和铝；在180℃时，该值再增加750kPa。虽然MPD-ESO树脂在180℃时的剪切强度为1996kPa，但三聚氰胺丁二胺-ESO树脂的剪切强度仅为1220kPa。
