Structure and characteristics of film composites based on methyl cellulose, poviargol, and montmorillonite

Dobrovol’skaya, I. P.; Yudin, V. E.; Drozdova, N. F.; Smirnova, V. E.; Gofman, I. V.; Попова, Е. Н.; Bochek, A. M.; Забивалова, Н. М.; Plugar, I. V.; Panarin, E. F.

doi:10.1134/s0965545x11020027

Cited by 9 publications

(6 citation statements)

References 9 publications

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“…Rimdusit et al [30] reported that tensile strength and elongation of MC-MMT films (10% MMT) were 92 MPa and 19%, respectively. Dobrovol et al [22] announced tensile strength and elongation of MC-MMT films (10% MMT) around 137 MPa and 22%, respectively [22,30]. Due to the presence of glycerol in this research, tensile strength and elongation were lower and higher than the other researches, respectively.…”

Section: Mechanical Propertiesmentioning

confidence: 51%

“…Ultrasound and microwave combination, especially lower than 20 min, can significantly affect barrier and mechanical properties of the films from methyl cellulose (MC), wheat bran cellulose and soy protein [15,19,20]. To the best knowledge of the authors, there are not any reports that show and prove the effects of ultrasound time on biodegradable films like MC [21,22].…”

Section: Introductionmentioning

confidence: 99%

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Effects of ultrasound time on the properties of methylcellulose-montmorillonite films

et al. 2017

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Methylcellulose-montmorillonite films were prepared via solvent casting method. The effects of different ultrasound times (0,15,30, 45, 60, and 75 min) on the properties of methylcellulose-montmorillonite films were evaluated. Fourier transform infrared and X-ray diffraction were applied to investigate and prove the effects of ultrasound time. The films were characterized by mechanical properties, opacity, water vapor permeability, yellowness index, and color. Ultrasound time significantly affected the characteristics of the films, except for elongation. Maximum tensile strength, opacity, YI, and b* as well as minimum L* and water vapor permeability were related to 60 min. The results from X-ray diffraction and Fourier transform infrared verified the effects of sonication time on the films properties, especially for 60 min. The Fourier transform infrared spectrum related to 60 min had more new and sharper peaks. The maximum compactness and strength of methylcellulose-montmorillonite films and the highest X-ray diffraction peak were also attributed to 60 min. Using ultrasound radiation for the production of such films is strongly recommended. To obtain the best quality and reach the required properties, considering the aim of the films, optimization of sonication time is mandatory.

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Section: Mechanical Propertiesmentioning

confidence: 51%

Section: Introductionmentioning

confidence: 99%

Effects of ultrasound time on the properties of methylcellulose-montmorillonite films

et al. 2017

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“…In addition, a significant release of 2-pyrrolidinone was found contrary to pure PLA emissions. The 2-pyrrolidinone release stem from the poly(vinylpyrrolidone) surface treatment applied to the Ag particles [9]. It should be noted that PLA softens already at 55 ℃ [39], thus, the tested PLA polyfilaments have presumably begun to degrade at 105 ℃.…”

Section: Stability Of Polyfilaments In Terms Of Volatile Organic Compmentioning

confidence: 99%

“…Medicinal and other fibres with an antimicrobial response are developed to protect against virus and bacterial strains that are hazard to a human [ 4 , 5 , 6 ]. Silver is typical additive to make antimicrobial fibres [ 7 , 8 , 9 ]. Silver itself is considered an expensive and toxic element and related modifications for antimicrobial compounds, i.e., polymer systems including nano particles and surface functionalization [ 10 ], rarely improve this character [ 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

“…To understand the level of antibacterial response of the rosin-containing polyfilaments, compared to a synthetic commercial additive, a selected silver-containing additive is studied in the following research. The concentration range (1–2 w-%) of the silver-based additive is selected based on the existing literature (2.0 w-%) [ 9 ]. An initial survey indicated similar performance for 1 w-% and 2 w-% additive concentrations.…”

Section: Introductionmentioning

confidence: 99%

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Weathering of Antibacterial Melt-Spun Polyfilaments Modified by Pine Rosin

et al. 2021

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For many antibacterial polymer fibres, especially for those with natural functional additives, the antibacterial response might not last over time. Moreover, the mechanical performance of polymeric fibres degrades significantly during the intended operation, such as usage in textile and industrial filter applications. The degradation process and overall ageing can lead to emitted volatile organic compounds (VOCs). This work focused on the usage of pine rosin as natural antibacterial chemical and analysed the weathering of melt-spun polyethylene (PE) and poly lactic acid (PLA) polyfilaments. A selected copolymer surfactant, as an additional chemical, was studied to better integrate rosin with the molecular structure of the plastics. The results reveal that a high 20 w-% of rosin content can be obtained by surfactant addition in non-oriented PE and PLA melt-spun polyfilaments. According to the VOC analysis, interestingly, the total emissions from the melt-spun PE and PLA fibres were lower for rosin-modified (10 w-%) fibres and when analysed below 60 ℃. The PE fibres of the polyfilaments were found to be clearly more durable in terms of the entire weathering study, i.e., five weeks of ultraviolet radiation, thermal ageing and standard washing. The antibacterial response against Gram-positive Staphylococcus aureus by the rosin-containing fibres was determined to be at the same level (decrease of 3–5 logs cfu/mL) as when using 1.0 w-% of commercial silver-containing antimicrobial. For the PE polyfilaments with rosin (10 w-%), full killing response (decrease of 3–5 logs cfu/mL) remained after four weeks of accelerated ageing at 60 ℃.

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Immunomodulatory properties of silver-containing nanocomposite on the basis of polyvinyltriazole

et al. 2015

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Structure and characteristics of film composites based on methyl cellulose, poviargol, and montmorillonite

Cited by 9 publications

References 9 publications

Effects of ultrasound time on the properties of methylcellulose-montmorillonite films

Effects of ultrasound time on the properties of methylcellulose-montmorillonite films

Weathering of Antibacterial Melt-Spun Polyfilaments Modified by Pine Rosin

Immunomodulatory properties of silver-containing nanocomposite on the basis of polyvinyltriazole

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