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Conference papers
Structured cellulose nanocrystal •lysozyme composite films, 2021 NANO Virtual Conference

Structured cellulose nanocrystal •lysozyme composite films, 2021 NANO Virtual Conference

Conference papers
High Velocity Thermal Spray with Modified Alloys for Digester, Evaporator and Recovery Boiler Corrosion Mitigation, 2021 PEERS Conference (21PEE01)

High Velocity Thermal Spray with Modified Alloys for Digester, Evaporator and Recovery Boiler Corrosion Mitigation, 2021 PEERS Conference (21PEE01)

Conference papers
Life Cycle Assessment of Construction-grade Thermoplastics from Organosolv Lignin, 2021 PEERS Conference (21PEE03)

Life Cycle Assessment of Construction-grade Thermoplastics from Organosolv Lignin, 2021 PEERS Conference (21PEE03)

Journal articles
Magazine articles
Open Access
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
Open Access
Commercially relevant water vapor barrier properties of high amylose starch acetates: Fact or fiction?, TAPPI Journal September 2021

ABSTRACT: Starches have recently regained attention as ecofriendly barrier materials due to the increased demand for sustainable packaging. They are easily processable by conventional plastics processing equipment and have been utilized for oil and grease barrier applications. While starches have excellent oxygen barrier properties and decent water barrier properties at low relative humidity (RH), they are moisture sensitive, as demonstrated by the deterioration of the barrier properties at higher RH values. Starch esters are chemically modified starches where the hydroxyl group of the starch has been substituted by other moieties such as acetates. This imparts hydrophobicity to starches and has been claimed as a good way of retaining water vapor barrier properties of starches, even at high RH conditions. We studied the water vapor barrier properties of one class of starch esters, i.e., high amylose starch acetates that were assumed to have good water vapor barrier properties. Our investigations found that with a high degree of substitution of hydroxyl groups, the modified starches did indeed show improvements in water vapor response as compared to pure high amylose starch films; however, the barrier properties were orders of magnitude lower than commercially used water vapor barriers like polyethylene. Even though these materials had improved water vapor barrier response, high amylose starch acetates are likely unsuitable as water vapor barriers by themselves, as implied by previous literature studies and patents.

Journal articles
Magazine articles
SetPoint: Sometimes Bigger is Better, Paper360º September/October 2021

SetPoint: Sometimes Bigger is Better, Paper360º September/October 2021

Journal articles
Magazine articles
Over the Wire, Paper360º September/October 2021

Over the Wire, Paper360º September/October 2021

Journal articles
Magazine articles
How Digitalization Supports the Circular Economy Value Chain, Paper360º September/October 2021

How Digitalization Supports the Circular Economy Value Chain, Paper360º September/October 2021

Journal articles
Magazine articles
Sappi Europe’s Largest Mill Accelerates Decarbonization Efforts, Paper360º September/October 2021

Sappi Europe’s Largest Mill Accelerates Decarbonization Efforts, Paper360º September/October 2021

Journal articles
Magazine articles
Evaluation of Fillers and Fines in Paper and Board: Fast, Non-Destructive, Accurate, and Reliable, Paper360º September/October 2021

Evaluation of Fillers and Fines in Paper and Board: Fast, Non-Destructive, Accurate, and Reliable, Paper360º September/October 2021

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