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Wyświetlanie 1-2 z 2
Tytuł:
Funkcjonalne materiały otrzymywane z udziałem ligniny : od projektowania do zastosowania
Functional materials obtained with the use of lignin : from design to application
Autorzy:
Klapiszewski, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/2200589.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
biopolimery
lignina
materiały hybrydowe
zielona chemia
biopolymers
lignin
hybrid materials
green chemistry
Opis:
Polymers of natural origin have been gaining increasing significance in sciences, as well as the industry. Owing to their renewable nature, unique properties and wide availability, they are components that can be used for numerous advanced applications. Lignin, a biopolymer, which is a waste product separated from the widely understood biomass, most usually generated in the pulp and paper industry, falls in line with this trend. In this context, the importance of cellulose, which is used in the production of paper and by-products is greater. Whereas lignin, in the vast majority, i.e. approx. 95-98%, constitutes an energy source generated as a result of its combustion. However, nowadays, due to the huge potential arising from the specific structure of lignin and its properties, attempts are being made at using this material in many different applications within the so-called high added value. Lignin, as a commonly used polymer of unique chemical structure and properties, has recently become a source of many studies utilizing its potential in the preparation of functional materials and/or biomaterials, including hybrid ones. Such systems consist of appropriate inorganic and organic elements, which as a whole constitute a functional product with special properties, not exhibited by individual components. This provides unlimited possibilities in terms of engineering, shaping and practical application in newly developed systems. The huge interest in hybrid materials and/or biomaterials results from their potential applications, namely, in medicine, electronics, optics, electrochemistry, energy storage etc. Therefore, it nowadays becomes justified and important to try and develop new, functional systems, which owing to their specific properties could result in interesting application-wise possibilities in everyday life. Therefore, the attempt to use lignin as a source of many attractive and prospective possibilities is not without significance.
Źródło:
Wiadomości Chemiczne; 2021, 75, 11-12; 1155--1169
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biokatalizatory i biopolimery w aspekcie zrównoważonej chemii
Biocatalysts and biopolymers in the aspect of sustainable chemistry
Autorzy:
Jesionowski, Teofil
Klapiszewski, Łukasz
Zdarta, Jakub
Powiązania:
https://bibliotekanauki.pl/articles/1853728.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
zielona chemia
ochrona środowiska
biokataliza
biopolimery
green chemistry
environmental protection
biocatalysis
biopolymers
Opis:
The rapid development of industry, apart from the obvious benefits, also leads to a significant increase in the level of environmental pollution, which is related not only to the use of harmful substances in the production process, but also to the production of significant amounts of by-products and wastes, which pose a serious threat to the environment as well as to the health and the life of living organisms. There is therefore a need to limit the use of toxic substances at every stage of production, and where this is not possible, appropriate waste management and the development of effective methods of harmful substances removal. In this respect, it seems crucial to introduce the principles of Green Chemistry as widely as possible. Green Chemistry is a concept whose main assumptions focus on designing and conducting chemical processes in a way that minimizes the use and formation of harmful substances as much as possible. This staretgy is based on twelve principles that overlap with the main assumptions of environmental chemistry to improve environmental protection and reduce pollution. There are many techniques and methods that fit into the assumptions of the broadly understood Green Chemistry, the implementation of which allows for sustainable management of post-production waste and by-products as well as their effective disposal. One of such concepts assumes the use of waste substances as a valuable raw material, not only for energy, but above all as a precursor and/or component for the production of innovative materials with high utility potential. Another idea is the use of enzymes, i.e. natural biocatalysts that allow chemical transformations to be carried out under mild process conditions, without the need to use harmful solvents. What's more, enzymes can be used not only at the stage of conversion/synthesis of substrates, but they can also be efficient tools for removing harmful substances. Hence, it seems necessary to undertake attempts aimed at the widest possible management of waste substances, as well as conduct research, the effect of which is the production of functional biocatalytic systems for various applications.
Źródło:
Wiadomości Chemiczne; 2021, 75, 9-10; 1241-1267
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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