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Tuning the Adhesive Strength of Functionalized Polyolefin-Based Hot Melt Adhesives: Unexpected Results Leading to New Opportunities
Abstract
The development of lightweight, often multi-component products requires adaptable and robust bondingsolutions. Hot melt adhesives increasingly attract industrial interestas they combine good adhesive strength, facile processability, andcost-efficiency. Recently, our group has reported on the remarkableadhesive performance of hydroxyl-functionalized propylene-basedcopolymers in bonding both polar and nonpolar surfaces. Theobtained adhesive strength proved to be too high for applicationssuch as single-use packaging, which requires low to moderateadhesion for easy opening. Tuning the adhesive strength bymanufacturing numerous functionalized polyolefin grades with varying contents of hydroxyl-functional groups is challenging in viewof industrial-scale production. Herein, we elucidate an alternative approach to tune the adhesive performance by blending thefunctionalized propylene copolymers with nonfunctionalized congeners. To understand the structure−property relationship of theinvestigated diluted blends, a thorough characterization of morphology, physical properties, crystallization, and viscoelastic behaviorwas performed. It appeared that the crystallinity of the nonfunctionalized polyolefin and its miscibility with the functionalizedpolyolefin play a crucial role on the adhesive strength of the blends. Either a gradual decrease in adhesive strength with dilution wasnoticed or�surprisingly�no loss of adhesive strength was observed at all, not even after diluting 100 times! Molecular dynamicssimulations revealed an intrinsic tendency of the hydroxyl-functionalized polyolefin to migrate to and interact with the aluminumoxide surface.
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Authors (9)
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Robbert Duchateau
- University of Groningen
-
Miloud Bouyahyi
- SABIC T&I Geleen
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Artur Różański
- CBMiM Łódź
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Lanti Yang
- SABIC T&I Bergen op Zoom
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Farhan Ahmad Pasha
- SABIC T&I KAUST
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Ralf Kleppinger
- SABIC T&I Geleen
Cite as
Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1021/acs.macromol.4c02945
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Keywords
Details
- Category:
- Articles
- Type:
- artykuły w czasopismach dostępnych w wersji elektronicznej [także online]
- Published in:
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MACROMOLECULES
ISSN: 0024-9297 - Language:
- English
- Publication year:
- 2025
- Bibliographic description:
- Jasińska-Walc L., Nowicka W., Kruszyński J., Duchateau R., Bouyahyi M., Różański A., Yang L., Pasha F. A., Kleppinger R., Tuning the Adhesive Strength of Functionalized Polyolefin-Based Hot Melt Adhesives: Unexpected Results Leading to New Opportunities, MACROMOLECULES, 2025,10.1021/acs.macromol.4c02945
- DOI:
- Digital Object Identifier (open in new tab) 10.1021/acs.macromol.4c02945
- Sources of funding:
-
- University of Groningen Library Open Access Team
- Verified by:
- Gdańsk University of Technology
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