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Synthesis and characterization of polyurethane based UV responsive detachable adhesives containing 1,8 cineole as UV Trigger.

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Title: Synthesis and characterization of polyurethane based UV responsive detachable adhesives containing 1,8 cineole as UV Trigger.
Authors: Atif, Muhammad1 (AUTHOR) chemistatif@yahoo.com, Ghani, Ambreen1 (AUTHOR), Imran, Muhammad2 (AUTHOR), Hassan Ahmad, Muhammad1 (AUTHOR), Bibi, Iqra1 (AUTHOR), Farid, Muhammad Awais1 (AUTHOR)
Source: Materials & Design. Dec2025, Vol. 260, pN.PAG-N.PAG. 1p.
Subjects: Adhesives, Sustainability, Biomaterials, Photosensitivity, Polyurethanes, Terpenes, Mechanical efficiency, Biodegradable materials
Abstract: [Display omitted] • Development and characterization of UV-stimulated reusable adhesives. • Sustainable utilization of biobased materials in adhesive synthesis. • Investigation of mechanical performance versus reusability through repeated bonding-debonding cycles. Traditional permanent adhesives restrict component repair, recycling, and sustainability due to their irreversible bonding and poor reworkability. Addressing these challenges requires designing smart adhesive systems with controlled detachment triggered by external stimuli such as light. This study investigated whether eucalyptus oil–derived adhesives can achieve UV-triggered reversible bonding with reliable mechanical performance, enabling recyclable and reusable adhesive systems without conventional PI (photo-initiators). Three formulations were synthesized using plant-based monomers and evaluated via the single lap joint (SLJ) test under 365 nm UV light (33 mW cm–2). Mechanical durability, load-bearing capacity, and detachment kinetics were assessed across multiple bonding–debonding cycles. FTIR spectroscopy was used to monitor molecular changes and confirm the UV-responsive detachment mechanism. Formulation S3 achieved seven repeatable UV-triggered debonding cycles, with detachment times increasing from 35 s to 310 s across cycles. It maintained adhesion under a 200 g load for two hours, outperforming S1 (42 min) and S2 (18 min). FTIR confirmed 1,8-cineole–DMG linkages as the light-cleavable sites enabling efficient bond release. This research presents a photo-initiator-free, bio-based adhesive design offering controllable, UV-responsive debonding and recyclability, representing a sustainable alternative to conventional permanent adhesives for industrial and consumer applications. [ABSTRACT FROM AUTHOR]
Copyright of Materials & Design is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 190372552
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PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: Synthesis and characterization of polyurethane based UV responsive detachable adhesives containing 1,8 cineole as UV Trigger.
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  Data: <searchLink fieldCode="AR" term="%22Atif%2C+Muhammad%22">Atif, Muhammad</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> chemistatif@yahoo.com</i><br /><searchLink fieldCode="AR" term="%22Ghani%2C+Ambreen%22">Ghani, Ambreen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Imran%2C+Muhammad%22">Imran, Muhammad</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hassan+Ahmad%2C+Muhammad%22">Hassan Ahmad, Muhammad</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bibi%2C+Iqra%22">Bibi, Iqra</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Farid%2C+Muhammad+Awais%22">Farid, Muhammad Awais</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Materials+%26+Design%22">Materials & Design</searchLink>. Dec2025, Vol. 260, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Adhesives%22">Adhesives</searchLink><br /><searchLink fieldCode="DE" term="%22Sustainability%22">Sustainability</searchLink><br /><searchLink fieldCode="DE" term="%22Biomaterials%22">Biomaterials</searchLink><br /><searchLink fieldCode="DE" term="%22Photosensitivity%22">Photosensitivity</searchLink><br /><searchLink fieldCode="DE" term="%22Polyurethanes%22">Polyurethanes</searchLink><br /><searchLink fieldCode="DE" term="%22Terpenes%22">Terpenes</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+efficiency%22">Mechanical efficiency</searchLink><br /><searchLink fieldCode="DE" term="%22Biodegradable+materials%22">Biodegradable materials</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: [Display omitted] • Development and characterization of UV-stimulated reusable adhesives. • Sustainable utilization of biobased materials in adhesive synthesis. • Investigation of mechanical performance versus reusability through repeated bonding-debonding cycles. Traditional permanent adhesives restrict component repair, recycling, and sustainability due to their irreversible bonding and poor reworkability. Addressing these challenges requires designing smart adhesive systems with controlled detachment triggered by external stimuli such as light. This study investigated whether eucalyptus oil–derived adhesives can achieve UV-triggered reversible bonding with reliable mechanical performance, enabling recyclable and reusable adhesive systems without conventional PI (photo-initiators). Three formulations were synthesized using plant-based monomers and evaluated via the single lap joint (SLJ) test under 365 nm UV light (33 mW cm–2). Mechanical durability, load-bearing capacity, and detachment kinetics were assessed across multiple bonding–debonding cycles. FTIR spectroscopy was used to monitor molecular changes and confirm the UV-responsive detachment mechanism. Formulation S3 achieved seven repeatable UV-triggered debonding cycles, with detachment times increasing from 35 s to 310 s across cycles. It maintained adhesion under a 200 g load for two hours, outperforming S1 (42 min) and S2 (18 min). FTIR confirmed 1,8-cineole–DMG linkages as the light-cleavable sites enabling efficient bond release. This research presents a photo-initiator-free, bio-based adhesive design offering controllable, UV-responsive debonding and recyclability, representing a sustainable alternative to conventional permanent adhesives for industrial and consumer applications. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Materials & Design is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.matdes.2025.115118
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Adhesives
        Type: general
      – SubjectFull: Sustainability
        Type: general
      – SubjectFull: Biomaterials
        Type: general
      – SubjectFull: Photosensitivity
        Type: general
      – SubjectFull: Polyurethanes
        Type: general
      – SubjectFull: Terpenes
        Type: general
      – SubjectFull: Mechanical efficiency
        Type: general
      – SubjectFull: Biodegradable materials
        Type: general
    Titles:
      – TitleFull: Synthesis and characterization of polyurethane based UV responsive detachable adhesives containing 1,8 cineole as UV Trigger.
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            NameFull: Atif, Muhammad
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            NameFull: Ghani, Ambreen
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            NameFull: Imran, Muhammad
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            NameFull: Hassan Ahmad, Muhammad
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            NameFull: Bibi, Iqra
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          Dates:
            – D: 01
              M: 12
              Text: Dec2025
              Type: published
              Y: 2025
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              Value: 260
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