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Journal articles
Magazine articles
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
Open Access
Statistical determination of the effects of enzymes on bleached pulp yield, TAPPI JOURNAL, August 2005, Vol. 4(8) (80 KB)

Statistical determination of the effects of enzymes on bleached pulp yield, TAPPI JOURNAL, August 2005, Vol. 4(8) (80 KB)

Journal articles
Open Access
Phosphonates as additives in kraft pulpingâ??a preliminary investigation, TAPPI JOURNAL, November 2002, Vol. 1(9) (134KB)

Phosphonates as additives in kraft pulping—a preliminary investigation, Solutions! & TAPPI JOURNAL, November 2002, Vol. 1(9) (134KB)

Journal articles
Open Access
Environmentally benign psas featured at recycling symposium, TAPPI JOURNAL, February 2000, Vol. 83(2)

Environmentally benign psas featured at recycling symposium, TAPPI JOURNAL, February 2000, Vol. 83(2)

Journal articles
Open Access
Oxalic acid formation during ecf and tcf bleaching of kraft pulp, TAPPI JOURNAL, February 2000, Vol. 83(2)

Oxalic acid formation during ecf and tcf bleaching of kraft pulp, TAPPI JOURNAL, February 2000, Vol. 83(2)

Journal articles
Open Access
A laboratory study of occ flotation for removal of model stickie particles, TAPPI JOURNAL, July 2000, Vol. 83(7)

A laboratory study of occ flotation for removal of model stickie particles, TAPPI JOURNAL, July 2000, Vol. 83(7)

Journal articles
Open Access
Addition of sodium silicate and chelant to the fas stage to bleach recycled fibers, TAPPI JOURNAL, July 2000, Vol. 83(7)

Addition of sodium silicate and chelant to the fas stage to bleach recycled fibers, TAPPI JOURNAL, July 2000, Vol. 83(7)

Journal articles
Open Access
Advanced combustion and flow modeling: comprehensive model study improves recovery boiler operation, TAPPI JOURNAL, July 2000, Vol. 83(7)

Advanced combustion and flow modeling: comprehensive model study improves recovery boiler operation, TAPPI JOURNAL, July 2000, Vol. 83(7)

Journal articles
Open Access
Alkaline peroxide mechanical pulping of wheat straw Part 2: significance of peroxide stabilization to the brightening of wheat straw, TAPPI JOURNAL, July 2000, Vol. 83(7)

Alkaline peroxide mechanical pulping of wheat straw Part 2: significance of peroxide stabilization to the brightening of wheat straw, TAPPI JOURNAL, July 2000, Vol. 83(7)

Journal articles
Open Access
CMP and ctmp of a fast-growing tropical wood: acacia mangium, TAPPI JOURNAL, July 2000, Vol. 83(7)

CMP and ctmp of a fast-growing tropical wood: acacia mangium, TAPPI JOURNAL, July 2000, Vol. 83(7)

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