Investigation of Physical Adhesion in Hemp Fibre Reinforced Composites Using Contact Angle Measurements and Inverse Gas Chromatography

Sander Van de Vel; Gurleen Kaur  Saini; Alexandros  Prapavesis; Yasmine Mosleh; Aart Willem Van Vuure

Investigation of Physical Adhesion in Hemp Fibre Reinforced Composites Using Contact Angle Measurements and Inverse Gas Chromatography

Sander Van de Vel^*, Gurleen Kaur Saini, Alexandros Prapavesis, Yasmine Mosleh, Aart Willem Van Vuure

^*Corresponding author for this work

Bio-based Structures & Materials

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Abstract

This study investigates the interface between hemp fibre and thermoplastic polymer matrices such as polypropylene (PP) and poly-acrylate (Elium®). The analysis was conducted using both traditional dynamic contact angle measurements with various probe liquids and a more novel approach involving inverse gas chromatography (IGC) with multiple gaseous probes. The goal was to predict fibre–matrix compatibility based on surface chemical characterisation. Both methods showed good correlation, with the dispersive surface energy of the natural fibres ranging between 33 and 39 mJ/m², and a significant basic component contributing to the overall polar surface energy. IGC proved more effective at distinguishing between the predominantly apolar PP and the more polar poly(methyl methacrylate) (PMMA) based Elium, with the predicted thermodynamic work of adhesion notably higher for hemp–Elium interfaces compared to hemp–PP. Micromechanical testing, combined with microscopic imaging, further supported the observation of improved intermolecular adhesion between the natural fibres and the Elium matrix.

Original language	English
Number of pages	11
Publication status	Published - 2025
Event	SAMPE EUROPE Conference 2025: The Future of Advanced & Sustainable Composites - Muziekgebouw aan 't IJ, Amsterdam, Netherlands Duration: 6 Oct 2025 → 7 Oct 2025 https://www.sampe-europe.org/conferences/se-conference-amsterdam-2025/

Conference

Conference	SAMPE EUROPE Conference 2025
Country/Territory	Netherlands
City	Amsterdam
Period	6/10/25 → 7/10/25
Internet address	https://www.sampe-europe.org/conferences/se-conference-amsterdam-2025/

Bibliographical note

Green Open Access added to TU Delft Institutional Repository as part of the Taverne amendment. More information about this copyright law amendment can be found at https://www.openaccess.nl.

Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

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title = "Investigation of Physical Adhesion in Hemp Fibre Reinforced Composites Using Contact Angle Measurements and Inverse Gas Chromatography",

abstract = "This study investigates the interface between hemp fibre and thermoplastic polymer matrices such as polypropylene (PP) and poly-acrylate (Elium{\textregistered}). The analysis was conducted using both traditional dynamic contact angle measurements with various probe liquids and a more novel approach involving inverse gas chromatography (IGC) with multiple gaseous probes. The goal was to predict fibre–matrix compatibility based on surface chemical characterisation. Both methods showed good correlation, with the dispersive surface energy of the natural fibres ranging between 33 and 39 mJ/m², and a significant basic component contributing to the overall polar surface energy. IGC proved more effective at distinguishing between the predominantly apolar PP and the more polar poly(methyl methacrylate) (PMMA) based Elium, with the predicted thermodynamic work of adhesion notably higher for hemp–Elium interfaces compared to hemp–PP. Micromechanical testing, combined with microscopic imaging, further supported the observation of improved intermolecular adhesion between the natural fibres and the Elium matrix.",

author = "\{Van de Vel\}, Sander and Saini, \{Gurleen Kaur\} and Alexandros Prapavesis and Yasmine Mosleh and \{Van Vuure\}, \{Aart Willem\}",

note = "Green Open Access added to TU Delft Institutional Repository as part of the Taverne amendment. More information about this copyright law amendment can be found at https://www.openaccess.nl. Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. ; SAMPE EUROPE Conference 2025 : The Future of Advanced \& Sustainable Composites ; Conference date: 06-10-2025 Through 07-10-2025",

year = "2025",

language = "English",

url = "https://www.sampe-europe.org/conferences/se-conference-amsterdam-2025/",

}

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T1 - Investigation of Physical Adhesion in Hemp Fibre Reinforced Composites Using Contact Angle Measurements and Inverse Gas Chromatography

AU - Van de Vel, Sander

AU - Saini, Gurleen Kaur

AU - Prapavesis, Alexandros

AU - Mosleh, Yasmine

AU - Van Vuure, Aart Willem

N1 - Green Open Access added to TU Delft Institutional Repository as part of the Taverne amendment. More information about this copyright law amendment can be found at https://www.openaccess.nl. Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

PY - 2025

Y1 - 2025

N2 - This study investigates the interface between hemp fibre and thermoplastic polymer matrices such as polypropylene (PP) and poly-acrylate (Elium®). The analysis was conducted using both traditional dynamic contact angle measurements with various probe liquids and a more novel approach involving inverse gas chromatography (IGC) with multiple gaseous probes. The goal was to predict fibre–matrix compatibility based on surface chemical characterisation. Both methods showed good correlation, with the dispersive surface energy of the natural fibres ranging between 33 and 39 mJ/m², and a significant basic component contributing to the overall polar surface energy. IGC proved more effective at distinguishing between the predominantly apolar PP and the more polar poly(methyl methacrylate) (PMMA) based Elium, with the predicted thermodynamic work of adhesion notably higher for hemp–Elium interfaces compared to hemp–PP. Micromechanical testing, combined with microscopic imaging, further supported the observation of improved intermolecular adhesion between the natural fibres and the Elium matrix.

AB - This study investigates the interface between hemp fibre and thermoplastic polymer matrices such as polypropylene (PP) and poly-acrylate (Elium®). The analysis was conducted using both traditional dynamic contact angle measurements with various probe liquids and a more novel approach involving inverse gas chromatography (IGC) with multiple gaseous probes. The goal was to predict fibre–matrix compatibility based on surface chemical characterisation. Both methods showed good correlation, with the dispersive surface energy of the natural fibres ranging between 33 and 39 mJ/m², and a significant basic component contributing to the overall polar surface energy. IGC proved more effective at distinguishing between the predominantly apolar PP and the more polar poly(methyl methacrylate) (PMMA) based Elium, with the predicted thermodynamic work of adhesion notably higher for hemp–Elium interfaces compared to hemp–PP. Micromechanical testing, combined with microscopic imaging, further supported the observation of improved intermolecular adhesion between the natural fibres and the Elium matrix.

M3 - Paper

T2 - SAMPE EUROPE Conference 2025

Y2 - 6 October 2025 through 7 October 2025

ER -

Investigation of Physical Adhesion in Hemp Fibre Reinforced Composites Using Contact Angle Measurements and Inverse Gas Chromatography

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Conference

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