Solid-state synthesis of amphiphilic chitosan-polyethylene systems by the maleinization of both components

Акопова, Т. А.; Vladimirov, L. V.; Zhorin, V. A.; Зеленецкий, А. Н.

doi:10.1134/s1560090409030099

Cited by 13 publications

(19 citation statements)

References 18 publications

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“…Additionally, its hydrophilic character does not allow its homogeneous dispersion in the PP matrix that is hydrophobic; however, the addition of compatibilizer improved the homogeneity of the films, as shown in Figure 3(2A–2C). This behavior is consistent with the literature where it was reported that the use of polymers grafted with maleic anhydride are good compatibilizers for immiscible binary mixtures [13,14,15,16]. Moreover, films with smaller chitosan particle size (Figure 3(3A–3C)) showed better dispersion of the particles of chitosan in the PP matrix, so in these films the formation of agglomerates is almost unnoticeable, which is attributed to the good dispersion of the chitosan particles in the PP matrix.…”

Section: Resultssupporting

confidence: 92%

Preparation and Characterization of Extruded Composites Based on Polypropylene and Chitosan Compatibilized with Polypropylene-Graft-Maleic Anhydride

et al. 2017

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The preparation of composites of synthetic and natural polymers represent an interesting option to combine properties; in this manner, polypropylene and chitosan extruded films using a different proportion of components and polypropylene-graft-maleic anhydride (PPgMA) as compatibilizer were prepared. The effect of the content of the biopolymer in the polypropylene (PP) matrix, the addition of compatibilizer, and the particle size on the properties of the composites was analyzed using characterization by fourier transform-infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), tensile strength, and contact angle, finding that in general, the addition of the compatibilizer and reducing the particle size of the chitosan, favored the physicochemical and morphological properties of the films.

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Section: Resultssupporting

confidence: 92%

Preparation and Characterization of Extruded Composites Based on Polypropylene and Chitosan Compatibilized with Polypropylene-Graft-Maleic Anhydride

et al. 2017

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“…The chitosan produced had a DA of 8–10% and the maleic anhydride to chitosan molar ratio was 0.4. Solid state acylation was performed via reactive extrusion . For further information on derivatives and their chemical structures, good overviews are given by Sashiwa and Shigemasa, Kurita et al., and just recently by Khattak et al …”

Section: Chitin Biomassmentioning

confidence: 99%

“…The use of chitosan in the reactive extrusion blending of glycerol plasticized starch and maleic anhydride grafted PE caused a reaction between the chitosan amino groups and maleic anhydride, resulting in co‐continuous blend morphology . A similar system led to heterogeneous chitosan/PE blends by reactive compatibilization with maleic anhydride . Due to the intense research on ILs over recent decades, it is not surprising that they have also been tested as compatibilizers in thermoplastic blend systems.…”

Section: Chitin Biomassmentioning

confidence: 99%

Natural Polymers from Biomass Resources as Feedstocks for Thermoplastic Materials

Müller

Zollfrank

Schmid

2019

Macro Materials & Eng

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With the objective of a more sustainable circular economy, one long‐term goal is the utilization of renewable resources as feedstock for the production of polymer‐based materials. In order to successfully process such materials using existing industrial‐scale technologies or even recycling processes, the natural polymers must have thermoplastic properties. With only a few exceptions, natural polymers are not thermoplastic. However, chemical and physical modification techniques are able to induce thermoplasticity in natural polymers from biomass resources such as cellulose, lignin, and chitin. Modification techniques focus on masking the hydroxyl groups to disrupt dense hydrogen bonding and so enable polymer chain mobility upon heating. The introduction of long alkyl chains into the polymer backbone effectively improves the thermoplastic processing of natural polymers. With regard to polymer blending, chemical grafting and graft copolymerization are powerful tools for enhancing compatibility. For both chemical and physical modification, solvents such as ionic liquids and deep eutectic solvents are currently being explored for biomass and fiber processing and show promise for the future development of thermoplastic biopolymers. This review describes possible modifications, potential processing difficulties, and gives a summary of relevant studies described in the scientific literature.

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“…Studies have been conducted with the inclusion of polymers grafted with maleic anhydride as compatibilizers into the blend during processing for better interfacial adhesion. [11][12][13] Quiroz-Castillo et al 3 reported that the use of polyethylene-graft-maleic anhydride (PEgMA) as a compatibilizer improved the processability, compatibility, and mechanical properties of a PE/chitosan mixture. Films with 20 wt % chitosan were obtained compared to films formed without the use of PEgMA.…”

Section: Introductionmentioning

confidence: 98%

Improved miscibility of low‐density polyethylene/chitosan blends through variation in the compounding length

Tan

Lim

Tay

et al. 2016

J of Applied Polymer Sci

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Synthetic biopolymer blends are gaining interest in the packaging industry because the incorporation of natural materials imparts biodegradable properties to films. In this study, polyethylene/chitosan (chitosan) films with thicknesses of about 0.3 6 0.01 mm were fabricated via compression molding. The effects of the variation in the length of compounding as a function of the length/diameter (l/d) ratio (15:1, 30:1, 45:1, 60:1, and 75:1) were investigated. The experimental results show that a higher degree of miscibility of the blends was achieved with increasing compounding length; this led to improved mechanical properties in the films, and this was verified by the statistical analysis of data with the analysis of variance procedure. The tensile strength (TS) increased by about 25%, whereas the elongation at break (E break ) increased by twofold. Films fabricated from blends compounded with an l/d ratio of 60:1 had the highest TS and E break values, and the TS was comparable to that of low-density polyethylene films. V C 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43796.

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Solid-state synthesis of amphiphilic chitosan-polyethylene systems by the maleinization of both components

Cited by 13 publications

References 18 publications

Preparation and Characterization of Extruded Composites Based on Polypropylene and Chitosan Compatibilized with Polypropylene-Graft-Maleic Anhydride

Preparation and Characterization of Extruded Composites Based on Polypropylene and Chitosan Compatibilized with Polypropylene-Graft-Maleic Anhydride

Natural Polymers from Biomass Resources as Feedstocks for Thermoplastic Materials

Improved miscibility of low‐density polyethylene/chitosan blends through variation in the compounding length

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