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Full-Text Articles in Wood Science and Pulp, Paper Technology
Properties And Environmental Impacts Of Sustainable Electrically Conductive Composites Of Carbonized Pulp Fibers And Recycled Polyamide 12, Chinmoyee Das
Dissertations, Master's Theses and Master's Reports
Electrically conductive composites are polymer composites filled with electrically conductive filler. Electrically conductive composites can be implemented in the development of lightweight electrically conductive components for the automotive industry. Traditional electrically conductive composites incorporate synthetic carbon-based fillers that have good properties but are very expensive and highly energy intensive, creating the need for a sustainable and cost-effective replacement. This study explores the effectiveness of biocarbon fibers developed from Douglas fir pulp fibers as a potential electrically conductive filler in recycled polyamide (PA) 12 composites.
Biocarbon fibers were developed from pulp by carbonization of the feedstock at 1000° C in an …
Recovering And Upgrading Kraft Lignin For Application In Flexible Polyurethane Foam, Peng Quan
Recovering And Upgrading Kraft Lignin For Application In Flexible Polyurethane Foam, Peng Quan
Dissertations, Master's Theses and Master's Reports
Lignin is the second abundant natural polymer and has been highlighted as a potential substitute for fossil-based raw materials. However, the inherent molecular heterogeneity and the complex recovery processes result in the challenge of controlling the molecular properties and value-added applications of lignin in large scale. To address those issues, a novel acid-liquefaction process was developed in this study to recover Kraft lignin with improved molecular homogeneity directly from black liquor.
In the first study, the liquefaction parameters were screened based on yield and molecular weight properties of the recovered lignin. Then, the recovered lignin samples were used to replace …