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Journal articles
Open Access
Use of enzymes for reduction in refining energy - laboratory

Use of enzymes for reduction in refining energy - laboratory studies, TAPPI JOURNAL, November 2006

Journal articles
Open Access
Image analytical monitoring of paper quality - a feasibility

Image analytical monitoring of paper quality - a feasibility study, TAPPI JOURNAL, November 2006

Journal articles
Open Access
Bond paper characteristics for printing by resistive ribbon thermal transfer, TAPPI JOURNAL July 1988

Bond paper characteristics for printing by resistive ribbon thermal transfer, TAPPI JOURNAL July 1988

Journal articles
Open Access
Measuring the swelling pressure of paper, TAPPI JOURNAL July 1988

Measuring the swelling pressure of paper, TAPPI JOURNAL July 1988

Journal articles
Open Access
Reuse of kraft mill secondary condensates, TAPPI JOURNAL July 1988

Reuse of kraft mill secondary condensates, TAPPI JOURNAL July 1988

Journal articles
Open Access
Sex, designer genes, and tree improvement, TAPPI JOURNAL July 1988

Sex, designer genes, and tree improvement, TAPPI JOURNAL July 1988

Journal articles
Open Access
Techniques for expanding the sphere of statistical process control, TAPPI JOURNAL July 1988

Techniques for expanding the sphere of statistical process control, TAPPI JOURNAL July 1988

Journal articles
Open Access
Pulping and Papermaking Properties of Managed Second-Growth

Pulping and Papermaking Properties of Managed Second-Growth Softwoods, 1995 Pulping Conference Proceedings

Journal articles
Open Access
Tailoring Fiber Properties to Paper Manufacture: Recent Deve

Tailoring Fiber Properties to Paper Manufacture: Recent Developments, 1995 Pulping Conference Proceedings

Journal articles
Open Access
Water and grease resistance of paperboard coated with long chain cellulose fatty acid esters using electrostatic powder coating, TAPPI Journal April 2026

ABSTRACT: Fiber-based materials used for foodservice, takeaway, and other packaging applications must typically provide water and grease resistance. Simultaneously, there is growing interest towards bio-based and renewable barrier coatings. In this study we applied thermoplastic long chain fatty acid cellulose esters onto paperboard using electrostatic powder coating to create barrier properties of interest. Electrostatic powder coating provides a water-free process to tackle moisture-induced quality issues and to provide an even coating layer. Cellulose octanoate and palmitate esters were produced in pilot scale. These were ground into fine particles using liquid nitrogen and applied onto paperboard sheets using an electrostatic powder gun. The loosely packed coatings were fixed and fused onto the paperboard by hot pressing. We characterized the coated sheets for coating thickness, contact angles with water, water absorption, grease resistance (KIT), and olive oil barrier. Two commercial polyethylene powders were used as references. Our results indicated that the long chain cellulose fatty acid ester coatings were thermoplastic and hydrophobic with contact angles above 100°. Water absorption was similar to the reference coatings. While grease resistance was lower than with the references, the cellulose ester coatings slowed down diffusion of olive oil through the paperboard. Cellulose octanoate ester with a lower melt viscosity already provided smooth coatings after the initial hot pressing step, while in most cases, the second post hot pressing step further improved the barrier properties.

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