Inventory audit notice: TAPPI Press orders will not be processed from August 21–28 during our fiscal year-end inventory audit. Orders placed during this time will ship starting August 31, in the order received. Normal payment processing also resumes August 31.

Thanks for your patience — this helps us serve our members better.

Search

Use the search bar or filters below to find any TAPPI product or publication.

Showing 61–70 of 107 results (Duration : 0.01 seconds)

Filters

Industry

Content Type

Publications

Level of Knowledge

Collections

Journal articles
Magazine articles
Paper Chemistry: What’s New, What’s Next, Paper360º March/

Paper Chemistry: What’s New, What’s Next, Paper360º March/April 2017

Journal articles
Magazine articles
UPM CEO Jussi Pesonen Named European CEO of the Year, Paper360º March/April 2019

UPM CEO Jussi Pesonen Named European CEO of the Year, Paper360º March/April 2019

Journal articles
Magazine articles
TAPPI Journal Summaries, Paper360º March/April 2019

TAPPI Journal Summaries, Paper360º March/April 2019

Journal articles
Magazine articles
Facing the Market, Paper360 May/June 2019

Facing the Market, Paper360 May/June 2019

Journal articles
Magazine articles
The Shortest Route to Fiber Quality, Paper360 May/June 2019

The Shortest Route to Fiber Quality, Paper360 May/June 2019

Journal articles
Magazine articles
Wood Pulp: The New Cotton for the Garment Industry?, Paper360 May/June 2019

Wood Pulp: The New Cotton for the Garment Industry?, Paper360 May/June 2019

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
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
Open Access
Editor's Note: An Ideal Raw Material for Pulp and Paper, TAP

Editor's Note: An Ideal Raw Material for Pulp and Paper, TAPPI JOURNAL March 2010

Journal articles
Magazine articles
Open Access
Continuous tannin extraction by use of screw reactor, TAPPI Journal February 2021

ABSTRACT: A pilot-size screw reactor (extraction unit) was used for tannin extraction of spruce. Yield of the same magnitude or better was obtained when comparing a screw reactor with batch reactors. A longer presoaking time in water seemed to be better than a short one for obtaining higher yield. A higher yield is obtained with lower dry-water ratio, which suggests that the internal diffusion in bark does not determine mass transfer as much as is the case without presoaking of bark. The higher dry-water ratio decreased the yield. The prior soaking of the bark also minimized the mechanical reactor feeding problems (clogging). The benefits of a screw reactor likely are that run time changes for different process conditions are flexible; it simplifies design and construction of an industrial unit for tannin production; and it saves space because of the need for fewer and smaller intermediate storage tanks.

Inside this Section