Manzardo Alessandro, Marson Alessandro, Roso Martina, Boaretti Carlo, Modesti Michele, Scipioni Antonio, Lorenzetti Alessandra
CESQA (Quality and Environmental Research Centre), Department of Industrial Engineering, and Department of Industrial Engineering, University of Padova, Via Marzolo 9, 35131 Padova, Italy.
ACS Omega. 2019 Aug 14;4(9):14114-14123. doi: 10.1021/acsomega.9b02025. eCollection 2019 Aug 27.
A methodological framework implementing laboratory activities and life cycle assessment is presented and applied to determine which parameters should be considered to develop biobased rigid polyurethane foams for thermal insulation with improved environmental performances when compared to their fossil counterparts. The framework was applied to six partially biobased (produced from bio-based polyols obtained from azelaic acid and/or lignin) and one fossil-based formulations. A comprehensive set of impact assessment categories was investigated including uncertainty and sensitivity analysis. Results proved that physical characteristics such as thermal conductivity and density are the most important variable to be optimized to guarantee better environmental performances of biobased polyurethane rigid foams for thermal insulation. Care should be taken with reference to ozone depletion potential, marine eutrophication, and abiotic depletion potential because of the uncertainty related to their results. The methylene diphenyl diisocyanate and foam production process were identified as the major sources of impacts. Overall environmental superiority of biobased polyurethanes cannot always be claimed with respect to their fossil counterpart.
提出并应用了一个实施实验室活动和生命周期评估的方法框架，以确定在开发用于隔热的生物基硬质聚氨酯泡沫时，与化石基同类产品相比，应考虑哪些参数以改善其环境性能。该框架应用于六种部分生物基（由壬二酸和/或木质素获得的生物基多元醇生产）和一种化石基配方。研究了一套全面的影响评估类别，包括不确定性和敏感性分析。结果证明，热导率和密度等物理特性是优化的最重要变量，以确保生物基聚氨酯硬质泡沫用于隔热时具有更好的环境性能。由于与结果相关的不确定性，应注意臭氧消耗潜能值、海洋富营养化和非生物资源耗竭潜能值。二苯基甲烷二异氰酸酯和泡沫生产过程被确定为主要影响来源。相对于化石基同类产品，生物基聚氨酯的整体环境优势并非总是成立。
