Evaluation of Poly(vinyl Alcohol) Addition Effect on Nanofibrillated Cellulose Films Characteristics

Silva, Eliane Lopes da; Reis, Cibelle Amaral; Vieira, Helena Cristina; Santos, Joielan Xipaia dos; Nisgoski, Silvana; Saul, Cyro Ketzer; Muñiz, Graciela Inés Bolzón de

doi:10.1590/01047760202026012654

Cited by 5 publications

(2 citation statements)

References 31 publications

(35 reference statements)

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“…The insertion of polymeric additives and nanostructures in the matrix can greatly improve the optical behavior since the diameter of the nanostructures is less than the wavelength of visible light (400 to 800 nm), allowing the complete passage of the light. Examples of polymers for blending include biopolymers such as PLA (poly-lactic acid) (Gazzotti et al, 2019) and biodegradable polymers such as PVA (poly-vinyl alcohol) (Silva et al, 2020) and starch (do Prado et al, 2018). Another potential example of treatment which could be used in intention to improve the transparency of the films is the use of specific enzymes on the raw material (Long et al, 2017), which can result in high quality of fibrillation, as well as chemical pre-treatments, besides the advantage of being environmentally friendly.…”

Section: Light Transmittance Of the Films/nanopapersmentioning

confidence: 99%

Bio-based films/nanopapers of banana tree pseudostem: From lignocellulosic wastes to added-value micro/nanomaterials

Guimarães

Scatolino

Martins

et al. 2021

Preprint

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The growing demand for products with lower environmental impact and the extensive applicability of cellulose nanofibrils (CNFs) have received attention in several fields of knowledge due to their attractive properties. In this study, bio-based films/nanopapers were produced with CNFs from banana tree pseudostem (BTPT) wastes and Eucalyptus kraft cellulose (EKC) and were evaluated by their properties, such as mechanical strength, biodegradability and light transmittance. The CNFs were produced by mechanical fibrillation (after 20 and 40 passages) from suspensions of BTPT (alkaline pre-treated) and EKC. Films/nanopapers were produced by casting from both suspensions with concentrations of 2% (based in dry mass of CNF). The BTPT films/nanopapers showed greater mechanical properties, with Young’s modulus and tensile strength around 2.42 GPa and 51 MPa (after 40 passages), respectively. On the other hand, the EKC samples showed lower disintegration in water after 24 h and biodegradability. The increase in the number of fibrillation cycles produced more transparent films/nanopapers and caused a significant reduction of water absorption for both raw materials. The permeability was similar for the films/nanopapers from BTPT and EKC. This study indicated that attractive mechanical properties and biodegradability could be achieved by bio-based nanomaterials, with potential for being applied as emulsifying agents and special membranes, enabling more efficient utilization of agricultural wastes.

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Section: Light Transmittance Of the Films/nanopapersmentioning

confidence: 99%

Bio-based films/nanopapers of banana tree pseudostem: From lignocellulosic wastes to added-value micro/nanomaterials

Guimarães

Scatolino

Martins

et al. 2021

Preprint

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show abstract

“…Production of biodegradable material from natural materials resources instead of non-biodegradable synthetic polymers increases great attention due to the developing consciousness of the green environment (1)(2)(3)(4). Several researchers have synthesized biodegradation composites, applying many forms of natural polymers as fillers such as cellulose, lignin, starch, chitin, chitosan, soy protein, and wheat protein.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Chemical Modification and Enzymatic Degradation of Poly(vinyl alcohol)/Hemoprotein Particle Composites

Awad

2021

Journal of the Turkish Chemical Society Section A: Chemistry

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Polyvinyl alcohol (PVA) composite films with different hemp protein particles (HPP) as additives were successfully synthesized by a solution casting method. The properties of HPP-based PVA composites films were investigated. The characterizations of pure PVA and PVA composite films were performed regarding Fourier transform infrared spectroscopy (FTIR), ultra-violet (UV-Vis) to investigate the chemical properties. The formation of hydrogen bond in the PVA-HPP films, which could improve the compatibility of the two components was investigated by FTIR spectroscopy and UV-Vis analysis. The overall results showed that a higher loading of HPP into the PVA matrix improved the chemical interactions significantly. The swelling degree decreased while the water contact angle values increased as the HPP content increased.

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Bio-based films/nanopapers from lignocellulosic wastes for production of added-value micro-/nanomaterials

Guimarães

Scatolino

Martins

et al. 2021

Environ Sci Pollut Res

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Evaluation of Poly(vinyl Alcohol) Addition Effect on Nanofibrillated Cellulose Films Characteristics

Cited by 5 publications

References 31 publications

Bio-based films/nanopapers of banana tree pseudostem: From lignocellulosic wastes to added-value micro/nanomaterials

Bio-based films/nanopapers of banana tree pseudostem: From lignocellulosic wastes to added-value micro/nanomaterials

Investigation of Chemical Modification and Enzymatic Degradation of Poly(vinyl alcohol)/Hemoprotein Particle Composites

Bio-based films/nanopapers from lignocellulosic wastes for production of added-value micro-/nanomaterials

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