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Application of spruce wood flour as a cellulosic-based wood additive for recycled paper applications— A pilot paper machine study, TAPPI Journal October 2021
ABSTRACT: This study gives a first insight into the use of wood flour as a plant-based and cellulosic-based alter-native additive for newsprint and paperboard production using 100% recycled fibers as a raw material. The study compares four varieties of a spruce wood flour product serving as cellulosic-based additives at addition rates of 2%, 4%, and 6% during operation of a 12-in. laboratory pilot paper machine. Strength properties of the produced news-print and linerboard products were analyzed. Results suggested that spruce wood flour as a cellulosic-based additive represents a promising approach for improving physical properties of paper and linerboard products made from 100% recycled fiber content. This study shows that wood flour pretreated with a plant-based polysaccharide and untreated spruce wood flour product with a particle size range of 20 μm to 40 μm and 40 μm to 70 μm can increase the bulk and tensile properties in newsprint and linerboard applications.
Journal articles
Magazine articles
Tetraethyl orthosilicate-containing dispersion coating — water vapor and liquid water barrier properties, TAPPI Journal September 2021
ABSTRACT: An aqueous styrene-butadiene latex dispersion coating containing in-situ processed tetraethyl orthosilicate (TEOS) applied on paperboard demonstrated improved water barrier performance. Coatings containing TEOS equivalent to 0.8% silicon dioxide (SiO2; dry basis) exhibited water vapor performance of < 25 g/m2/day (23°C, 50% relative humidity [RH]) and liquid water barrier performance Cobb 1800 s of < 6 g/m2, when applied as a single-layer 18 g/m2 coating. Cobb 1800 s barrier performance was still good (< 11 g/m2) at coat weights of 7–10 g/m2. The use of filler materials such as kaolin improved the vapor barrier properties of the coating, but this was not critical to the liquid water barrier properties.
Journal articles
Magazine articles
Effects of different ammonium lignosulfonate contents on the crystallization, rheological behaviors, and thermal and mechanical properties of ethylene propylene diene monomer/polypropylene/ammonium lignosulfonate composites, TAPPI Journal January 2020
ABSTRACT: Thermoplastic elastomer (TPE), made from ethylene propylene diene monomer (EPDM) and polypropylene (PP) based on reactive blending, has an excellent processing performance and characteristics and a wide range of applications. However, there are currently no reports in the literature regarding the usage of TPE in making composite boards. In this paper, EPDM, PP, and ammonium lignosulfonate (AL) were used as the raw materials, polyethylene wax was used as the plasticizer, and a dicumyl peroxide vulcanization system with dynamic vulcanization was used to make a new kind of composite material. This research studied the influences of the AL contents on the crystallization behaviors, rheological properties, thermal properties, and mechanical properties of the composites. The results showed that the AL content had a noticeable impact on the performance of the composite board. Accordingly, this kind of composite material can be used as an elastomer material for the core layer of laminated flooring.
Journal articles
Laboratory study of shoe pressing for low basis weight paper applications, TAPPI JOURNAL, April 2001, Vol. 84(4)
Laboratory study of shoe pressing for low basis weight paper applications, TAPPI JOURNAL, April 2001, Vol. 84(4)
Journal articles
Gmundâ??s special place in the heart of Europe, TAPPI JOURNAL, August 2001, Vol. 84(8)
Gmund’s special place in the heart of Europe, TAPPI JOURNAL, August 2001, Vol. 84(8)
Journal articles
Finch, Pruyn: a small mill with a long tradition, TAPPI JOURNAL, August 2001, Vol. 84(8)
Finch, Pruyn: a small mill with a long tradition, TAPPI JOURNAL, August 2001, Vol. 84(8)
Journal articles
Forests for our future: what an experience!, TAPPI JOURNAL, August 2001, Vol. 84(8)
Forests for our future: what an experience!, TAPPI JOURNAL, August 2001, Vol. 84(8)
Journal articles
Shear factor : a new way to characterize fiber suspension shear, TAPPI JOURNAL, August 2001, Vol. 84(8)
Shear factor : a new way to characterize fiber suspension shear, TAPPI JOURNAL, August 2001, Vol. 84(8)
Journal articles
E-commerce: panacea or placebo?, TAPPI JOURNAL, July 2001, Vol. 84(7)
E-commerce: panacea or placebo?, TAPPI JOURNAL, July 2001, Vol. 84(7)
Journal articles
Bleaching of recycled fibers by adding sodium borohydride to a peroxide reinforced oxygen stage, TAPPI JOURNAL, June 2001, Vol. 84(6)
Bleaching of recycled fibers by adding sodium borohydride to a peroxide reinforced oxygen stage, TAPPI JOURNAL, June 2001, Vol. 84(6)