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Lignin-based resins for kraft paper applications, TAPPI Journal November 2019
ABSTRACT: We investigated miscanthus (MS) and willow (W) lignin-furfural based resins as potential reinforce-ment agents on softwood and hardwood kraft paper. These resins might be sustainable alternatives to the commercial phenolformaldehyde (PF) resins. Phenol is a petrochemical product and formaldehyde has been classified as a carcinogen by the U.S. Environmental Protection Agency. The lignin used in this study was derived from hot water extraction (160ºC, 2 h) of MS and W biomass, and may be considered sulfur-free. These biorefinery lignins were characterized for their chemical composition and inherent properties via wet chemistry and instrumental techniques. The resin blends (MS-resin and W-resin) were characterized for their molecular weight, thermal behavior, and mechanical properties. Mechanical properties were measured by the resin’s ability to reinforce softwood and hard-wood kraft papers. The effect of adding hexamethylenetetramine (HMTA), a curing agent, to the resin was also examined. Mixtures of PF and lignin-based resins were investigated to further explore ways to reduce use of non-renewables, phenol, and carcinogenic formaldehyde. The results show that lignin-based resins have the potential to replace PF resins in kraft paper applications. For softwood paper, the highest strength was achieved using W-resin, without HMTA (2.5 times greater than PF with HMTA). For hardwood paper, MS-resin with HMTA gave the highest strength (2.3 times higher than PF with HMTA). The lignin-based resins, without HMTA, also yielded mechanical properties comparable to PF with HMTA.
Journal articles
Magazine articles
7 Water Waste Reduction Strategies to Improve Pump Reliability/Black Liquor Processing, Paper360º November/December 2019
7 Water Waste Reduction Strategies to Improve Pump Reliability/Black Liquor Processing, Paper360º November/December 2019
Journal articles
Magazine articles
To Canfor, Pulp is Much More than a Commodity, Paper360º September/October 2019
To Canfor, Pulp is Much More than a Commodity, Paper360º September/October 2019
Journal articles
Magazine articles
The Next-Generation QCS, Paper360º November/December 2016
The Next-Generation QCS, Paper360º November/December 2016
Mill Experience With Metsoâ??s New Low Consistency Refining Concept OptiFiner Pro, PaperCon 2013
Mill Experience With Metso’s New Low Consistency Refining Concept OptiFiner Pro, PaperCon 2013
Sustainability Certification for the Paper & Pulp Industry: Current Requirements and Developing Trends, PaperCon 2013
Sustainability Certification for the Paper & Pulp Industry: Current Requirements and Developing Trends, PaperCon 2013
Effect of Poor Deinkable Paper on Dip Quality, 2013 PEERS Conference
Effect of Poor Deinkable Paper on Dip Quality, 2013 PEERS Conference
Ingrained in the Chain: Committing to a Wholly Responsible Supply Chain-Supply Chain and Customer Sustainability Issues, 2013 PEERS Conference
Ingrained in the Chain: Committing to a Wholly Responsible Supply Chain-Supply Chain and Customer Sustainability Issues, 2013 PEERS Conference
Creating Innovative Growth in the Canadian Forest Products Industry, 2013 PEERS Conference
Creating Innovative Growth in the Canadian Forest Products Industry, 2013 PEERS Conference
A New On-Line Lignin Measurement: Dissolved Lignin Transmitter-DLT?5500, 2013 PEERS Conference
A New On-Line Lignin Measurement: Dissolved Lignin Transmitter-DLT?5500, 2013 PEERS Conference