Increase of value and stability of electret characteristics of polylactide by magnesium oxide modification

Gilmutdinova, A. M.; Галиханов, М. Ф.; Назаров, Н. Г.; Гужова, А А; Khayrullin, R. Z.; Huziakhmetov, R. H.; Yovcheva, T.; Viraneva, A.

doi:10.1063/1.5002989

Cited by 8 publications

(4 citation statements)

References 11 publications

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“…An increase in the bentonite content initially improves and then slightly reduces the electret properties of the polymer (Fig. 1); this finding is compliant with the earlier studies (Gilmutdinova et al 2017;Guzhova et al 2016;Kiliс et al 2013;Kurbanov et al 2018). Fine filler is known to affect the energy depth of the traps of polymers (Galikhanov et al 2005;Gojayev et al 2015;Temnov et al 2013).…”

Section: Resultssupporting

confidence: 87%

“…However, unipolar corona discharge as the fastest and simplest method to obtain an electret is not suitable for polar polylactic acid. In order to change electrical and physical properties of the polymer, attempts were made to introduce fine fillers into the polymer matrix (Gilmutdinova et al 2017;Guzhova et al 2016;Ismayilova, Kuliev 2020;Kiliс et al 2013;Kurbanov et al 2018;Liu et al 2019).…”

Section: Introductionmentioning

confidence: 99%

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Studying properties of corona electret based on compositions of polylactic acid and bentonite

Zagidullina

Kamalova

Галиханов

et al. 2021

Physics of Complex Systems

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The study focuses on the composites of polylactic acid and bentonite as well as corona electrets based on them. The paper explores rheological, electrical, physical and mechanical properties of the composites as well as the effect of corona charging on their properties. Differential scanning calorimetry was used to assess transition temperatures in the compositions. Surface potential, electric field strength and effective surface charge density were measured. Optimal performance was shown by the compositions of polylactic acid with 4% bentonite.

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Section: Resultssupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Studying properties of corona electret based on compositions of polylactic acid and bentonite

Zagidullina

Kamalova

Галиханов

et al. 2021

Physics of Complex Systems

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“…Nowadays the Couchsurfing community is the largest hospitality network and a new type of youth tourism that is rapidly gaining popularity worldwide [10].…”

Section: Resultsmentioning

confidence: 99%

“…Couchsurfers have access to the most visited countries, the number of participants and the relationships between them, which is provided on the site [3,10,12]. Regarding the regional features of couchsurfing, the most popular regions include (Fig.…”

Section: Finance Department Legality Management Division Human Resourmentioning

confidence: 99%

Couchsurfing as a virtual hospitality network and a type of sustainable youth tourism

et al. 2020

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The modern tourism diversity coursed by the emergence of its new varieties is sure to evolve with a view to the goals of sustainable future. The article is dedicated to couchsurfing, a kind of sustainable youth tourism, a global hospitality network, as an online service used for transcultural communication of tourists through the organization of various assistance during joint travel. It helps meet tourists' recreational needs and travelling at no charge. The article considers the organizational structure of couchsurfing as a network managed by regional units. The authors identify the factors that influence the development of this type of tourism (globalization of the world economy, the development of the Internet, the growth of human wellbeing, democratization of society and etc.). They offer a comprehensive classification of types of couchsurfing by several criteria (age of tourists, number of participants, purpose of the trip and direction, length of stay, intensity of tourist flow). The regional peculiarities of the couchsurfing development are identified, and the regions with high

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Enzymatic Self-Degradable PLA-Based Electrets

Flachs,

Zhukov,

Zech

et al. 2024

J Polym Environ

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In recent years, the demand for sustainable and degradable materials and electronic devices has increased significantly. Among a range of biodegradable polymers, poly(lactic acid) (PLA) is a good alternative to conventional petrol-based polymers because of its attractive mechanical properties and its easy processability. Recently, PLA has also been described as a promising dielectric material with piezoelectric and electret properties. We expect that PLA—after further optimization—will play an important role as a material for environmentally friendly sensors in the future, where first applications such as air filters and pressure sensors have already been proposed. However, degradation under normal ambient conditions is very slow, and an accelerated and controllable degradation process is highly desirable for any type of PLA-based sensors. Enzymatic hydrolysis with embedded enzymes has been proposed as an approach to accelerate and control degradation. In this work, we investigate the properties of PLA in terms of dielectric and mechanical properties with a focus on its ability to store charges after the enzyme proteinase K (Trit. album) has been incorporated. Results reveal that proteinase K has a positive effect on the charge stability of solvent-cast PLA electrets after complete evaporation of the solvent. Furthermore, we observed a concentration-dependent acceleration of mass loss in a Tris-HCl buffer. A fast degradation within only one day occurred at a concentration of 6 wt% proteinase K.

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Increase of value and stability of electret characteristics of polylactide by magnesium oxide modification

Cited by 8 publications

References 11 publications

Studying properties of corona electret based on compositions of polylactic acid and bentonite

Studying properties of corona electret based on compositions of polylactic acid and bentonite

Couchsurfing as a virtual hospitality network and a type of sustainable youth tourism

Enzymatic Self-Degradable PLA-Based Electrets

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