Novel antimicrobial bioplastic based on PLA-chitosan by addition of TiO2 and ZnO

Suryanegara, Lisman; Fatriasari, Widya; Zulfiana, Deni; Anita, Sita Heris; Masruchin, Nanang; Gutari, Sesmi; Kemala, Tetty

doi:10.1007/s40201-021-00614-z

Cited by 25 publications

(7 citation statements)

References 33 publications

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“…Instruments based on the Raman spectroscopy (RS) method are already available as portable instruments, yet are rarely employed in the literature to study the structure and degradation of biobased polymers [20] under water tests. In the literature, the most conventional experimental technique used in polymer characterization is FTIR spectroscopy (FTIR) [3,[21][22][23][24][25]. FTIR is only available in laboratory facilities, and the spectra acquired with this technique can be influenced by the water absorption band [26], so it is not best suited for in-situ characterization in a humid environment.…”

Section: Introductionmentioning

confidence: 99%

Study of the Degradation of Biobased Plastic after Stress Tests in Water

Ambrosio¹,

Faglia

Tagliabue³

et al. 2021

Coatings

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Research on compostable bioplastics has recently obtained performances comparable to traditional plastics, like water vapor permeability, sealability, and UV transmission. Therefore, it is crucial to create new tools that help the developers of new polymeric composites study them quickly and cost-effectively. In this work, Raman spectroscopy (RS) was proposed as a versatile tool to investigate the degradation of biobased plastics after a stress test in water: this approach is a novelty for food packaging. Treatments at room temperature (RT) and 80 °C were selected, considering that these biopolymers can be used to packaging ready meals. The investigation was carried out on single-layer sheets of poly-lactic acid (PLA), cellulose ester (CE), poly-butylene succinate (PBS), poly-butylene adipate-co-terephthalate (PBAT), and a new composite material obtained by coupling CE and PBS (BB951) and PLA and CE (BB961). The vibrational modes of the water-treated materials at RT and 80 °C were compared to the Raman spectra of the pristine bioplastic, and the morphologies of the polymers were analyzed by scanning electron microscopy (SEM) and optical microscopy. Composite sheets were the plastics which were mostly affected by the 80 °C treatment in water, through changes in morphology (wrinkling with alternate white and transparent zones), as was especially the case for BB951. The Raman spectra acquired in different zones showed that the vibrations of BB951 were generally maintained in transparent zones but reduced or lacking in white zones. At the same time, the single-layer materials were almost unchanged. For BB961, the Raman vibrations were only slightly modified, in agreement with the visual inspection. The results suggest that RS detects the specific chemical bond that was modified, helping us understand the degradation process of biobased plastics after water treatment.

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Section: Introductionmentioning

confidence: 99%

Study of the Degradation of Biobased Plastic after Stress Tests in Water

Ambrosio¹,

Faglia

Tagliabue³

et al. 2021

Coatings

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“…Было доказано, что биопластик с добавлением хитозан и ZnO проявляет антимикробную активность в отношении грамотрицательных микроорганизмов (Escherichia coli и Salmonella typhi), грамположительные бактерии (золотистый стафилококк и Bacillus subtilis), Candida albicans (дрожжи), Aspergillus niger (грибы). Добавление хитозана и ZnO в биопластик на основе обладает лучшей антимикробной активностью, чем TiO 2 [65].…”

Section: Nzvn124unclassified

Review of bioplastic production strategies as the most environmentally sustainable alternative to traditional plastics

Sergeev,

Velmozhina,

Politaeva

2024

The Eurasian Scientific Journal

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This scientific article provides an overview of contemporary strategies for bioplastic production, considering them as the most environmentally sustainable alternative to traditional plastics. The article analyzes the current state of the technical cycle of plastic use and its impact on the environment, as well as assesses potential effects on human health. Special attention is devoted to the investigation of bioplastics, highlighting their advantages compared to traditional polymers. Particular emphasis is placed on bioplastic film with added chitosan, regarded as an effective component for enhancing the ecological and functional characteristics of the material. The authors present an extensive review of global scientific literature and patents, demonstrating the current level of research in this field. Based on the analysis of proposed strategies for producing chitosan-containing bioplastics, the conclusion is drawn regarding the viability of this direction in creating environmentally sustainable materials, considering the requirements for natural resource conservation and reducing environmental impact. In addition to analyzing the technical cycle of plastic use and its environmental impact, the article also examines contemporary methods and technologies for bioplastic production. Significant attention is given to the investigation of raw materials necessary for bioplastic production and their potential for reducing dependence on petroleum-based products. Furthermore, the article provides an overview of recent studies dedicated to the integration of chitosan-containing bioplastics into various industrial sectors, such as the packaging industry, agriculture, and the medical field. Practical examples of using such materials and their effectiveness compared to traditional plastics are analyzed. In conclusion, the article emphasizes the need for further research in developing new methods for bioplastic production using chitosan and other biodegradable components. Potential obstacles and challenges facing the widespread adoption of bioplastics in industry are discussed, and possible ways to overcome them are proposed with the aim of creating a more sustainable model of consumption and production. Further research in this area could contribute to the development of new bioplastic production technologies and their widespread adoption in industry to reduce negative environmental impact and create a more sustainable consumption model.

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“…In this research, antimicrobial property of the PLA/CF bioplastics, with the addition of different concentrations (0.0, 0.5, 1.0, 1.5 and 2.0 %) of TiO2, was carried out using pathogenic microbial strains, Escherichia coli (a type of Gram-negative bacteria) and Staphylococcus aureus and Bacillus subtilis (a type of Gram-positive bacteria). The determinations were conducted using an agar diffusion method and based on the formation of inhibition zones on microbial growth media according to previous studies [35][36][37] with modifications. The microorganisms were inoculated into 50 mL of nutrient broth culture medium in 100 mL Erlenmeyer flask and incubated in rotary shaker at a temperature of (28 ± 2 °C) for 24 h. After incubation period, 1 %(v/v) of inoculum was inoculated into agar medium and mixed thoroughly.…”

Section: Biodegradability Testmentioning

confidence: 99%

Physical, Mechanical and Antibacterial Properties of Biodegradable Bioplastics from Polylactic Acid and Corncob Fibers with Added Nano Titanium Dioxide

Buddhakala

Buddhakala²

2023

Trends Sci

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The objective of this research was to investigate the mechanical, physical and antibacterial activities and biodegradability properties of bioplastics from polylactic acid (PLA) and corncob fibers (CF). The bioplastics were prepared by mixing PLA and CF at different ratios (100:0, 90:10, 80:20, 70:30, 60:40 and 50:50 % w:w) in the internal mixer and molding was done by using the hot-compressing molding method. The results demonstrated the decrease in tensile strength and elongation at break with increased in CF. Young’s modulus was found to be highest in the 70 %PLA: 30 %CF bioplastic, however, it decreased when the CF was increased. The hardness and water absorption were dependent on CF concentration. SEM analysis revealed the well dispersion of CF in PLA matrix. PLA matrix and increasing of CF induced in CF agglomeration. To develop PLA/CE plastic for antibacterial food packaging application, its antibacterial activity was conducted. The antibacterial determination revealed that 70 %PLA: 30 %CF containing 2 % TiO2 bioplastic exhibited the highest inhibition against E. Coli, S. aureus and B. subtilis. The results obtained from this research indicate that the bioplastics prepared from polylactic acid and corncob fibers is biodegradable bioplastics and can be used as alternate synthetic plastics. The bioplastic with 2 %TiO2 added can be utilized potentially for expected antibacterial food packaging. HIGHLIGHTS The bioplastics prepared from polylactic acid and corncob fibers (PLA/CF) is a biodegradable bioplastic PLA/CF bioplastic with the addition of 1 % TiO2 possesses antibacterial property Corncob fibers decrease tensile strength, elongation at break and Young’s modulus of the PLA/CF bioplastic Corncob fibers increase the hardness and water absorption of the PLA/CF bioplastic Increasing concentration of corncob fibers causes the agglomeration of corncob fibers in the PLA/CF bioplastic GRAPHICAL ABSTRACT

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Novel antimicrobial bioplastic based on PLA-chitosan by addition of TiO2 and ZnO

Cited by 25 publications

References 33 publications

Study of the Degradation of Biobased Plastic after Stress Tests in Water

Study of the Degradation of Biobased Plastic after Stress Tests in Water

Review of bioplastic production strategies as the most environmentally sustainable alternative to traditional plastics

Physical, Mechanical and Antibacterial Properties of Biodegradable Bioplastics from Polylactic Acid and Corncob Fibers with Added Nano Titanium Dioxide

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