Title Elektrinio verpimo procesų, skirtų nanopluoštų gamybai, palyginamasis vertinimas /
Translation of Title Comparative assessment of electrospinning processes used for nanofiber production.
Authors Danienė, Vitalija
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Pages 53
Keywords [eng] electrospinning ; polycaprolactone ; nylon 6 ; life cycle assessment ; biopolymers
Abstract [eng] Electrospinning is recognized as an effective way for nanofiber production. Electrospinning method is divided into two types: solution electrospinning and solvent-free electrospinning. The literature is full of information on solvent electrospinning for nanofibers production, but on the more recently developed process – solvent – free electrospinning, there is not much information. From environmental perspective – the latter method is more friendly to the environment, but is more energy intensive than the solvent electrospinning. Nanomaterials market is constantly growing and electrospinning method is the main method for nanofiber production. The aim of this work is to compare solution and solvent – free electrospinning techniques for nanofiber production using life cycle assessment method. The study was conducted in a laboratory scale. Nylon 6 and polycaprolactone nanofiber production processes were compared based on impact to human health, ecosystems and resources. Different solvents were chosen for polycaprolactone and nylon 6 polymers in solvent electrospinning. The work aims to assess how different polymer and solvent selection impacts environmental impact categories. The analysis was performed using SimaPro 8.3 software. The results were analyzed using normalization and weighting methods. Functional unit of the process – 1 kg of nanofibre. The results of the normalized environmental impact assessment shows that the most affected environmental impact category was resources. The results of weighted environmental impact assessment shows that the most affected environmental impact category was human health. A comparison of nylon 6 and polycaprolactone nanofibers production processes revealed that the environmental impact was higher of nylon 6 nanofiber production process. A comparison of solution and solvent – free electrospinning processes revealed that environmental impact to impact categories of solution electrospinning was much higher.
Dissertation Institution Kauno technologijos universitetas.
Type Master thesis
Language Lithuanian
Publication date 2017