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Design of Extruded Nanostructured Composites via Decoupling of the Cellulose Nanofibril/Poly(butylene adipate-co-terephthalate) Interface

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Title: Design of Extruded Nanostructured Composites via Decoupling of the Cellulose Nanofibril/Poly(butylene adipate-co-terephthalate) Interface
Authors: Avella, Angelica, 1995, Telaretti Leggieri, Maria Rosella, Alexakis, Alexandros Efraim, Malmstrom, E., Lo Re, Giada, 1971
Source: ACS Applied Materials & Interfaces. 17(1):2602-2614
Subject Terms: cellulose nanofibrils, poly(butylene adipate-co-terephthalate), diblock copolymers, nanocomposites, interface design
Description: The full exploitation of the outstanding mechanical properties of cellulose nanofibrils (CNFs) as potential reinforcements in nanocomposite materials is limited by the poor interactions at the CNF-polymer matrix interface. Within this work, tailor-made copolymers were designed to mediate the interface between CNFs and biodegradable poly(butylene adipate-co-terephthalate) (PBAT), and their effect on extruded nanocomposite performance was tested. For this purpose, two well-defined amphiphilic anchor-tail diblock copolymer structures were compared, with a fixed anchor block length and a large difference in the hydrophobic tail block length. The aim was to evaluate the impact of the copolymers’ chain length on the nanocomposite interface. The presence of amphiphilic diblock copolymers significantly improved the mechanical properties compared to those of PBAT nanocomposites containing unmodified CNFs. In particular, the copolymer with a longer tail was more effective for CNF-PBAT dispersion interactions, leading to a 65% increase of Young’s modulus of neat PBAT, while retaining high deformability (670%). The results provide insights into the effectiveness of a waterborne third component at the CNF-matrix interface and its structure-property relationship.
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  Label: Title
  Group: Ti
  Data: Design of Extruded Nanostructured Composites via Decoupling of the Cellulose Nanofibril/Poly(butylene adipate-co-terephthalate) Interface
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Avella%2C+Angelica%22">Avella, Angelica</searchLink>, 1995<br /><searchLink fieldCode="AR" term="%22Telaretti+Leggieri%2C+Maria+Rosella%22">Telaretti Leggieri, Maria Rosella</searchLink><br /><searchLink fieldCode="AR" term="%22Alexakis%2C+Alexandros+Efraim%22">Alexakis, Alexandros Efraim</searchLink><br /><searchLink fieldCode="AR" term="%22Malmstrom%2C+E%2E%22">Malmstrom, E.</searchLink><br /><searchLink fieldCode="AR" term="%22Lo+Re%2C+Giada%22">Lo Re, Giada</searchLink>, 1971
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  Label: Source
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  Data: <i>ACS Applied Materials & Interfaces</i>. 17(1):2602-2614
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22cellulose+nanofibrils%22">cellulose nanofibrils</searchLink><br /><searchLink fieldCode="DE" term="%22poly%28butylene+adipate-co-terephthalate%29%22">poly(butylene adipate-co-terephthalate)</searchLink><br /><searchLink fieldCode="DE" term="%22diblock+copolymers%22">diblock copolymers</searchLink><br /><searchLink fieldCode="DE" term="%22nanocomposites%22">nanocomposites</searchLink><br /><searchLink fieldCode="DE" term="%22interface+design%22">interface design</searchLink>
– Name: Abstract
  Label: Description
  Group: Ab
  Data: The full exploitation of the outstanding mechanical properties of cellulose nanofibrils (CNFs) as potential reinforcements in nanocomposite materials is limited by the poor interactions at the CNF-polymer matrix interface. Within this work, tailor-made copolymers were designed to mediate the interface between CNFs and biodegradable poly(butylene adipate-co-terephthalate) (PBAT), and their effect on extruded nanocomposite performance was tested. For this purpose, two well-defined amphiphilic anchor-tail diblock copolymer structures were compared, with a fixed anchor block length and a large difference in the hydrophobic tail block length. The aim was to evaluate the impact of the copolymers’ chain length on the nanocomposite interface. The presence of amphiphilic diblock copolymers significantly improved the mechanical properties compared to those of PBAT nanocomposites containing unmodified CNFs. In particular, the copolymer with a longer tail was more effective for CNF-PBAT dispersion interactions, leading to a 65% increase of Young’s modulus of neat PBAT, while retaining high deformability (670%). The results provide insights into the effectiveness of a waterborne third component at the CNF-matrix interface and its structure-property relationship.
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1021/acsami.4c17899
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      – Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 13
        StartPage: 2602
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      – SubjectFull: cellulose nanofibrils
        Type: general
      – SubjectFull: poly(butylene adipate-co-terephthalate)
        Type: general
      – SubjectFull: diblock copolymers
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      – SubjectFull: interface design
        Type: general
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      – TitleFull: Design of Extruded Nanostructured Composites via Decoupling of the Cellulose Nanofibril/Poly(butylene adipate-co-terephthalate) Interface
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            NameFull: Avella, Angelica
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            NameFull: Telaretti Leggieri, Maria Rosella
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            NameFull: Alexakis, Alexandros Efraim
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            NameFull: Malmstrom, E.
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            NameFull: Lo Re, Giada
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              M: 01
              Type: published
              Y: 2025
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            – TitleFull: ACS Applied Materials & Interfaces
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