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Open Access
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
Forest Tech Secures Future Fiber, Paper360º November/December 2019

Forest Tech Secures Future Fiber, Paper360º November/December 2019

Journal articles
Magazine articles
IIoT for R&M: The Real Struggle, Paper360º November/December 2019

IIoT for R&M: The Real Struggle, Paper360º November/December 2019

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

Magazine articles
Open Access
Editor's Note: Jim Atkins: Technology, training & transition

Editor's Note: Jim Atkins: Technology, training & transition, TAPPI JOURNAL September 2011

Journal articles
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Papermaking Best Practices With Vacuum-Dewatering Systems: P

Papermaking Best Practices With Vacuum-Dewatering Systems: Part 1, Paper360º September/October 2017

Journal articles
Magazine articles
TAPPI JOURNAL Summaries, Paper360º September/October 2017

TAPPI JOURNAL Summaries, Paper360º September/October 2017

Journal articles
Magazine articles
Open Access
Impact of fiber structure on edge-wicking of highly-sized paperboard, TAPPI JOURNAL August 2018

Impact of fiber structure on edge-wicking of highly-sized paperboard, TAPPI JOURNAL August 2018

Journal articles
Magazine articles
RISI's North American CEO of the Year, Paper360º November/De

RISI's North American CEO of the Year, Paper360º November/December 2016

Journal articles
Magazine articles
Nonwood Fiber: Growth and Opportunity, Paper360º November/D

Nonwood Fiber: Growth and Opportunity, Paper360º November/December 2016

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