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Identifying sustainable alternatives to dimethyl formamide for coating applications using Hansen Solubility Parameters
Journal of Cleaner Production ( IF 11.1 ) Pub Date : 2021-09-11 , DOI: 10.1016/j.jclepro.2021.129011
Shiran Yu 1 , Rashmi Sharma 2 , Gregory Morose 3 , Ramaswamy Nagarajan 1
Affiliation  

The toxicity of certain organic solvents utilized in industrial processes has been a major concern in the last few decades. The stricter regulations and increased public awareness around the use of toxic solvents are driving industries towards safer alternatives. Dimethyl formamide (DMF) is an important industrial solvent used to solubilize several polymers used in the coating industry (more than 200 thousand tons globally), especially polyurethanes (PU). However, DMF is toxic and can potentially create an unsafe work environment for workers, and therefore safer alternatives are needed. The Hansen Solubility Parameter (HSP) theory is one of the accepted methodologies used for predicting the solubility of polymers. Using the HSP principles and the Hansen Solubility Parameters in Practice (HSPiP) software, alternative solvent blends are identified for two commercial polyurethanes - Desmopan® and Desmocoll®. The alternative solvent blends dissolve the polymers at 25% w/w loading and have comparable costs to DMF. They are also less toxic in comparison to DMF. In addition, other physical properties like evaporation rate and boiling point are also matched. Coating trials are carried out using an industrial pilot coating line to ensure that the solvent system is a ‘drop-in’ replacement for DMF. This research establishes a methodology for rapidly identifying safer alternatives for various toxic solvents.



中文翻译:

使用汉森溶解度参数确定用于涂料应用的二甲基甲酰胺的可持续替代品

在过去的几十年里,工业过程中使用的某些有机溶剂的毒性一直是一个主要问题。更严格的法规和公众对有毒溶剂使用意识的提高正在推动行业转向更安全的替代品。二甲基甲酰胺 (DMF) 是一种重要的工业溶剂,用于溶解涂料工业中使用的多种聚合物(全球超过 20 万吨),尤其是聚氨酯 (PU)。然而,DMF 是有毒的,可能会为工人创造一个不安全的工作环境,因此需要更安全的替代品。汉森溶解度参数 (HSP) 理论是公认的用于预测聚合物溶解度的方法之一。使用 HSP 原理和 Hansen Solubility Parameters in Practice (HSPiP) 软件,确定了两种商业聚氨酯的替代溶剂混合物 - Desmopan® 和 Desmocoll®。替代溶剂混合物以 25% w/w 的负载量溶解聚合物,并且成本与 DMF 相当。与 DMF 相比,它们的毒性也更低。此外,蒸发率和沸点等其他物理特性也相匹配。涂层试验是使用工业试验涂层线进行的,以确保溶剂系统是 DMF 的“直接”替代品。这项研究建立了一种方法,可以快速确定各种有毒溶剂的更安全替代品。其他物理特性如蒸发率和沸点也匹配。涂层试验是使用工业试验涂层线进行的,以确保溶剂系统是 DMF 的“直接”替代品。这项研究建立了一种方法,可以快速确定各种有毒溶剂的更安全替代品。其他物理特性如蒸发率和沸点也匹配。涂层试验是使用工业试验涂层线进行的,以确保溶剂系统是 DMF 的“直接”替代品。这项研究建立了一种方法,可以快速确定各种有毒溶剂的更安全替代品。

更新日期:2021-09-27
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