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Journal articles
Open Access
Optical and photocatalytic properties of photoactive paper with polycrystalline TiO2 nanopigment for optimal product design, TAPPI JOURNAL May 2012

Optical and photocatalytic properties of photoactive paper with polycrystalline TiO2 nanopigment for optimal product design, TAPPI JOURNAL May 2012

Journal articles
Magazine articles
Open Access
Cationic emulsions of maleic anhydride derivatives of oleic and abietic acid for hydrophobic sizing of paper, TAPPI Journal 2020

ABSTRACT: Ordinary rosin sizing agents are mixtures of resin acids that include abietic acid and related compounds obtained from softwoods such as pine. Fatty acids, which are another byproduct of the kraft pulping of soft-wood species, also may have hydrophobic effects, but their use as sizing agents has seldom been considered. In the current study, abietic acid and oleic acid, in the absence of other components, were first modified by reaction with maleic acid anhydride. Then, the maleated derivatives (maleated oleic acid [MOA] and maleated abietic acid [MAA]), which were emulsified with cationic starch at the 1:1 and 3:2 ratio, respectively, were added to fiber furnish containing aluminum sulfate (papermaker’s alum). The prepared sheets were dried with a rotating drum on one side at 100°C at low pressure to cure the sizing agents. The chemical, optical strength, and absorption properties were measured. The presence of the sizing material was confirmed using time of flight secondary ion mass spectrometry (ToF-SIMS), and the retention of the sizing agent on fibers was supported by evidence of hydrocarbons on the paper surface. In addition to achieving sufficient water resistance features with MAA, a lesser hydrophobic character was obtained when using MOA. Compared to commercial applications, relatively large amounts of sizing agent were used to obtain a sufficient sizing degree. The MOA required 5% addition to achieve a similar sizing degree as MAA at the 2% level. The sizing treatments also resulted in substantial increases in tensile index value. Since cationic starch was used in the formulation of the sizing agents, the increase in tensile index may have been due to the influence of cationic starch. Contributions to paper strength from a combination of ionic complexation and mutual association of hydrophobic groups is also proposed. Depending on the amount of sizing agent, the yellowness increased, especially when sizing with MOA.

Journal articles
Magazine articles
Open Access
Case study: Paper mill power plant optimization—balancing steam venting with mill demand, TAPPI Journal June 2020

ABSTRACT: Most Power departments are tasked with generating steam to support mill wide operations, generate electricity, and reduce operating costs. To accomplish these tasks, power boilers generate high pressure steam that is reduced to intermediate and low pressures for process utilization in the mill by means of steam turbine generator extraction or pressure reducing valves. The most economical method to reduce steam pressure is the use of steam turbine generators, as electricity is generated from the steam when it is reduced in pressure. Electricity that is produced by these generators provides a substantial financial benefit and helps offset overall operational costs. To achieve tangible financial gains, the mill must evaluate the overall cost of steam production and the price of electricity.The current work provides a case study of power plant optimization that evaluated electricity production and steam production costs balanced with mill steam demand. Process and cost optimization led to a significant reduc-tion in low pressure steam venting, resulting in reduced fuel consumption and reduced operating cost.

Journal articles
Magazine articles
Open Access
Editorial: The changing face of the coated paper industry, TAPPI JOURNAL January 2018

Editorial: The changing face of the coated paper industry, TAPPI JOURNAL January 2018

Journal articles
Magazine articles
Open Access
Contrasting underlying mechanisms of different barrier coating types, TAPPI Journal January 2018

Contrasting underlying mechanisms of different barrier coating types, TAPPI Journal January 2018

Journal articles
Magazine articles
Open Access
Print quality of flexographic printed paperboard related to coating composition and structure, TAPPI Journal January 2018

Print quality of flexographic printed paperboard related to coating composition and structure, TAPPI Journal January 2018

Journal articles
Open Access
Coating layer formation in dry surface treatment of paper substrates, Solutions! & TAPPI JOURNAL, May 2004, Vol. 3(5) (381KB)

Coating layer formation in dry surface treatment of paper substrates, Solutions! & TAPPI JOURNAL, May 2004, Vol. 3(5) (381KB)

Journal articles
Open Access
Operational issues in high-speed curtain coating of paper, part 1: the principles of curtain coating, Solutions! & TAPPI JOURNAL, November 2004, Vol. 3(11) (173KB)

Operational issues in high-speed curtain coating of paper, part 1: the principles of curtain coating, Solutions! & TAPPI JOURNAL, November 2004, Vol. 3(11) (173KB)

Journal articles
Open Access
Polymer coating of paper using dry surface treatment: Coating structure and performance, Solutions! & TAPPI JOURNAL, November 2004, Vol. 3(11) (1302KB)

Polymer coating of paper using dry surface treatment: Coating structure and performance, Solutions! & TAPPI JOURNAL, November 2004, Vol. 3(11) (1302KB)

Journal articles
Open Access
Improving energy efficiency in the forest products industry, TAPPI JOURNAL, November 2004, Vol. 3(11) (136KB)

Improving energy efficiency in the forest products industry, TAPPI JOURNAL, November 2004, Vol. 3(11) (136KB)

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