Paper360 - March/April 2012 - (Page 44)

Inside WWW . TA P G PI.OR AL JOURN ’ TE US TR IES CH NIC UR AL RE SO CE ER NOVEMB NO. 11 VOL. 10 2011 | PE R TH E PA CK AG AN D PA ING IND GUEST EDI 5 TORIAL nsforming ysics: Tra Paper Ph papermaking into art of the er a science Terry Blis e Kell s and Stev TJ SUMMARIES 9 UCTURE PAPER STR of light olic theory The hyperb tensile strength, , scattering in paper and density Gerard J.F. Ring PAPER FOR 23 MATION tion ure simula Microstruct er forming using of early pap ndary methods bou immersed k, Erik Svenning, lvik, Mar rik Ede Andreas dqvist, Fred , Robert Run an Rief, t, Stef s Fredlund nn, Mat Erik Glat and Wiegma tinsson, Andreas Lars Mar Ron Lai, an Ulf Nym INK PENETR 35 ATION ation jet penetr Imaging ink paper using ed in uncoat ic techniques microscop ur, Robert P. Smith, Arth Beth Ann rykov, and Sergiy Lav V. Ramarao o Bandara THE PAPERS SUMMARIZED HERE ARE from the January 2012 issue of TAPPI Journal, a special issue featuring research from the State University of New York, College of Environmental Science and Forestry (SUNY-ESF). TAPPI Journal is an online publication of relevant and timely peer-reviewed research delivered via email free to all TAPPI members. To receive TAPPI Journal, join TAPPI at PENSION FIBER SUS 45 thod for A new meizing turbulent ntrated character semiconce mixing in ns on suspensio Thomss Paul Kroc hak and Lars BIOREFINERY Increasing the value of a biorefinery based on hot-water extraction: Lignin products Biljana M. Bujanovic, Mangesh Goundalkar, and Thomas E. Amidon A biorefinery based on hot-water extraction may produce a range of high-value products f rom lig nin isolated f rom extracts of hardwoods, including carbon fibers, thermoplastics, and oxygenated aromatic compounds. Existing processes focus primarily on the quality of cellulose and result in a severely modified and contaminated lignin of relatively low value. Lignin produced in more f lexible biorefinery operations is more uniform and less contaminated than currently available industrial lignins, opening the door for broader applications of lignin and lignin products. The results of isolation and characterization of lignin dissolved during hot-water extraction and some potential applications of this lignin are discussed. PA PE SP R EC IS PH IA SU Y L E SIC S ADDITIVES Novel blend of biorenewable wet-end paper agents Chen Gong, Asif Hasan, Biljana M. Bujanovic, and Thomas E. Amidon Recent studies have shown potential for a designed biorefi nery product, polylactic acid (PLA), to increase the strength-toweight ratio of paper produced from conventional kraft pulp and kraft pulp made from hot-water extracted hardwoods (biorefi nery pulp). These results indicated that after surface-treatment with 2% PLA (per oven-dry [o.d.] fiber basis), paper made from sugar maple biorefinery pulp could be equivalent to or even greater in strength than paper made from sugar maple conventional kraft pulp, while retaining its higher bulk. In the current study, the researchers present the results of reinforcement of the pulps with PLA applied in the wet-end in combination with a known environmentally SEM micrograph of paper made from biorefinery pulp (BP). Experiments performed to study modification of noncarbohydrate wood constituents during hot-water extraction (HWE) with model species sugar maple [Acer saccharum]. SEM micrograph of paper made from biorefinery pulp and treated on the surface with PLA (2% based on o.d. fibers). 44 Paper360º MARCH/APRIL 2012 http://WWW.TAPPI.ORG

Table of Contents for the Digital Edition of Paper360 - March/April 2012

Over the Wire . . . News Summary
Asian Innovation on the Rise
SPECIAL FEATURE: Tissue Industry
North America Shifts to Specialization
A Measured Success
Aligning Rolls in a Paper Machine Winder
Understanding Lightweighting
Sappi Biberist Tests a New Inline Sensor to Control OBAs and Colors
Process Control for Stickies
An Innovative Yankee Coating Program
Biopolymers in Papermaking
Best Practices in Product Development
Employee Work Restrictions Challenge Human Resources
Paper360° Online Exclusives
Association News

Paper360 - March/April 2012