High biobased content waterborne latexes stabilized with casein

Allasia, Mariana; Aguirre, Miren; Gugliotta, Luis Marcelino; Minari, Roque Javier; Leiza, José R.

doi:10.1016/j.porgcoat.2022.106870

Cited by 11 publications

(7 citation statements)

References 25 publications

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“…To increase the bio-content of the latex particles, Leiza and coworkers combined hydrophilic casein (native or methacrylated) with hydrophobic 2-octyl acrylate and IBOMA as bio-based monomers. 54 Thus, they copolymerized OA and IBOMA by emulsion polymerization in batch or semi-batch, in the presence of casein, as described previously (Fig. 7d).…”

Section: Protein-based Polymersmentioning

confidence: 88%

“…In the previous section, it was used as comonomer to prepare waterborne latex coating. 53,54 Luk and Maríc 86 synthesized poly(farnesene) homopolymer by nitroxide-mediated polymerization (NMP) in a miniemulsion using D7 (Dispolreg 007) or NHS-BB (succinimidyl-modified BlocBuilder) as alkoxyamine initiators. However, the final farnesene conversion was limited (30–40%), large particles were obtained (300–400 nm diameter size) in spite of the large amount of used Dowfax 8390 surfactant (15 wt% relative to monomer), the experimental M n for M n,target = 30 000 g mol −1 was significantly higher than the theoretical M n and the dispersity Đ was most often larger than 2.…”

Section: Terpene-based Polymersmentioning

confidence: 99%

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Recent advances in radical polymerization of bio-based monomers in aqueous dispersed media

et al. 2023

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Section: Protein-based Polymersmentioning

confidence: 88%

Section: Terpene-based Polymersmentioning

confidence: 99%

Recent advances in radical polymerization of bio-based monomers in aqueous dispersed media

et al. 2023

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“…Ten distilled water droplets of 20 μL were deposited onto films and their CA were processed using the LBADSA method implemented in the ImageJ software. 33 2.2.8. Mechanical Properties of the Films.…”

Section: Scanning Electron Microscopy (Sem)mentioning

confidence: 99%

Use of Micro/Nano- and Nanofibrillated Cellulose To Improve the Mechanical Properties and Wet Performance of Xylan/Chitosan Films: A Comparison

Schnell,

Inalbon,

Minari

et al. 2023

ACS Appl. Polym. Mater.

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Growing health and environmental regulations are enforcing the preparation of sustainable and eco-friendly materials. In this context, this study investigates the effects of incorporating in a strategic manner micro/nanofibrillated cellulose (M/NFC) and only the nanofibrillated cellulose fraction (NFC) into xylan (Xyl)/ chitosan (Ch)-based materials. The objective is to establish the bases to formulate films with optimized mechanical and wet performance. The M/NFC was successfully obtained from commercial spruce dissolving pulp by oxalic acid pretreatment followed by mechanical processing. The M/NFC and the NFC fraction were deeply characterized by complementary techniques. It was found that the nanofibrillation yield was 60% and the content of the carboxylic acid groups increased with the treatments (up to 267 μeq/g). To obtain homogeneous films, fibrillated cellulose was dispersed in the cationic polyelectrolyte solution (Ch) prior to the anionic polyelectrolyte (Xyl) addition. The films prepared with the cellulosic material up to 5−7 wt % of M/NFC or NFC were shown to be nonporous, uniform, and highly transparent (particularly when NFC was used). Furthermore, the crystallinity, thermal stability, and mechanical properties of the films increased, mainly when 5 wt % M/NFC was used (stress at break 88.6 MPa, strain at break 5.6%). The cellulose-containing films were less water-sensitive, kept their integrity after immersion in water, and showed an enhanced hydrophobicity surface compared to the reference Xyl/Ch film. All these results suggest that the addition of micro-and nanofibrillated cellulose under proper conditions is an alternative to improve the properties of natural-based films, highlighting their potential application for food packaging.

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“…[ 13 ] 2‐Octyl acrylate has successfully been used to develop waterborne adhesives [ 14–18 ] and coatings. [ 19–21 ]…”

Section: Introductionmentioning

confidence: 99%

“…[13] 2-Octyl acrylate has successfully been used to develop waterborne adhesives [14][15][16][17][18] and coatings. [19][20][21] However, the substitution of 2-EHA by 2-OA is not straightforward. Badía et al observed that for a pressure sensitive adhesive formulation, when comparing a formulation based on 2-OA with another one based on 2-EHA, a higher gel content was obtained for the 2-OA based formulation (75% gel content for 2-OA vs 52% gel for 2-EHA).…”

Section: Introductionmentioning

confidence: 99%

Oil‐Based versus Bio‐Based C8 Alkyl Chain (Meth)Acrylates in Emulsion Polymerization: Kinetics and Microstructure

Barrenetxe

Agirre

Santos³

et al. 2022

Macro Reaction Engineering

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2-Octyl acrylate (2-OA) is a very promising bio-based monomer that is a great candidate to substitute the widely used (but oil-based) 2-ethylhexyl acrylate (2-EHA). In this work, the homopolymerization of these two monomers along with their methacrylic analogues (2-octyl methacrylate, 2-OMA and 2-ethylhexyl methacrylate, 2-EHMA) is compared to analyze their performance in detail. Very similar polymerization kinetics are observed, both in conversion and particle size. However, there are important differences in the microstructure (molar mass distribution, gel content, and degree of branching). Both acrylates form high amounts of gel (2-OA higher than 2-EHA) while the methacrylates do not form any. It is found that the most likely reason for the higher amount of gel on 2-OA lies on the second abstractable labile hydrogen in the side chain presented in this monomer, that is more reactive in 2-OA than in 2-EHA. This is supported by the molar mass distributions, that show that 2-octyl esters have higher molar mass than their respective 2-ethylhexyl counterparts (both in acrylates and methacrylates), as a result of a higher amount of long chain branches.

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High biobased content waterborne latexes stabilized with casein

Cited by 11 publications

References 25 publications

Recent advances in radical polymerization of bio-based monomers in aqueous dispersed media

Recent advances in radical polymerization of bio-based monomers in aqueous dispersed media

Use of Micro/Nano- and Nanofibrillated Cellulose To Improve the Mechanical Properties and Wet Performance of Xylan/Chitosan Films: A Comparison

Oil‐Based versus Bio‐Based C8 Alkyl Chain (Meth)Acrylates in Emulsion Polymerization: Kinetics and Microstructure

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