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Assessment of physical properties of self-bonded composites made of cellulose nanofibrils and poly(lactic acid) microfibrils

Cellulose (London), 2018-06, Vol.25 (6), p.3393-3405 [Peer Reviewed Journal]

Springer Science+Business Media B.V., part of Springer Nature 2018 ;Copyright Springer Science & Business Media 2018 ;Cellulose is a copyright of Springer, (2018). All Rights Reserved. ;ISSN: 0969-0239 ;EISSN: 1572-882X ;DOI: 10.1007/s10570-018-1822-3

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Title:
Assessment of physical properties of self-bonded composites made of cellulose nanofibrils and poly(lactic acid) microfibrils
Author: Robles, Eduardo ; Kánnár, Antal ; Labidi, Jalel ; Csóka, Levente
Subjects: Acids ; Atomic force microscopy ; Bend strength ; Bioorganic Chemistry ; Biopolymers ; Bleaching ; Cellulose ; Ceramics ; Chemistry ; Chemistry and Materials Science ; Chlorine ; Composite materials ; Composites ; Contact angle ; Glass ; Gluing ; Hot pressing ; Mechanical properties ; Morphology ; Natural Materials ; Organic Chemistry ; Original Paper ; Physical Chemistry ; Physical properties ; Polylactic acid ; Polymer Sciences ; Pulping ; Surface energy ; Sustainable Development ; Tensile stress ; Thermodynamic properties ; Ultrasonic testing ; Water vapor
Is Part Of: Cellulose (London), 2018-06, Vol.25 (6), p.3393-3405
Description: Cellulose nanofibrils and poly(lactic acid) microfibrils, two bio-based polymers were used to elaborate composite films, and their properties were evaluated. Cellulose nanofibrils were obtained from organic pulping with total chlorine-free bleaching and were manufactured using high-pressure homogenization; while poly(lactic acid) microfibrils were obtained from a commercial partner. Morphological aspects of cellulose nanofibrils were assessed by atomic force microscopy showing traditional morphology for the elaborated nanofibrils, as well as the effects of sonication on the poly(lactic acid) microfibrils. Self-bonded composite films with different compositions were fabricated by hot pressing following methodologies previously reported. Uniaxial tensile stress was measured with a universal testing machine showing a decrease in most mechanical properties because of the low interactions between cellulose nanofibrils and polylactide microfibrils. Water vapor permeability was evaluated with a thermohygrometer and surface energy with the sessile-drop contact angle method these results showed good values for printing and gluing, with surface free energies ranging between 27 and 60 m Nm −1 . Furthermore, industrial standards for paper-like materials and thermal properties of the composites were also analyzed of which it is to highlight the good bending strength as well as the concurrence of the results of Parker Print Surface tests with those of water contact angle.
Publisher: Dordrecht: Springer Netherlands
Language: English
Identifier: ISSN: 0969-0239
EISSN: 1572-882X
DOI: 10.1007/s10570-018-1822-3
Source: ProQuest Central

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Assessment of physical properties of self-bonded composites made of cellulose nanofibrils and poly(lactic acid) microfibrils

Springer Science+Business Media B.V., part of Springer Nature 2018 ;Copyright Springer Science & Business Media 2018 ;Cellulose is a copyright of Springer, (2018). All Rights Reserved. ;ISSN: 0969-0239 ;EISSN: 1572-882X ;DOI: 10.1007/s10570-018-1822-3

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