TECHNICAL NOTE: A METHOD TO DETERMINE THE WETTING OF WOOD FIBERS WITH THERMOPLASTIC

Authors

Keywords:

thermomechanical pulp, thermoplastic, wettability

Abstract

This paper presents a method which allows to assess the wettability of thermomechanical pulp (TMP) with thermoplastic. The method is based on the usage of laboratory sheets made of TMP and plastic granules which form drops under heat. The contact angle of the drops after re-solidification on the surface of the laboratory sheets serves as the wetting characteristic. This method enables a direct and evaluable testing of wood fiber thermoplastic combinations. The exemplary results indicate that wood species, pulping temperature and mercerization influence the wettability of TMP with thermoplastic.

Author Biography

Simon Barth, Technical University Rosenheim

Research Associate

References

ISO 5269-2 (2004) Pulps - Preparation of laboratory sheets for physical testing - Part 2: Rapid-Köthen method. ISO - International Organization for Standardization, Geneva.

Fuentes CA, Tran L, van Hellemont M, Janssens V, Dupont-Gillain C, van Vuure AW, Verpoest I (2013) Effect of physical adhesion on mechanical behaviour of bamboo fibre reinforced thermoplastic composites. Colloids and Surfaces A: Physicochemical and Engineering Aspects 418:7-15.

Liu FP,Wolcott MP, Gardner DJ, Rials TG (1994) Characterization of the interface between cellulosic fibers and a thermoplastic matrix. Composite Interfaces 2(6):419-432.

Roffael E, Dix B, Schneider T (2002) Method to determine the Wetting of Wood Fibers. European Journal of Wood and Wood Products 60(5):347-348. In German with summary in English.

Sundberg, A, Pranovich A, Holmbolm B (2000) Distribution of anionic groups in TMP suspensions. J Wood Chem Technol 20(1):71-92.

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Published

2021-04-26

Issue

Vol. 53 No. 2 (2021)

Section

Technical Notes

License

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