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Effect of Characteristics of Polyvinyl Alcohol on the Physical and Chemical Properties of Carbon-Containing Cryogels

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1. Título Título do documento Effect of Characteristics of Polyvinyl Alcohol on the Physical and Chemical Properties of Carbon-Containing Cryogels
2. Autor principal Autor, estabelecimento, país M. Fufaeva; Institute of Petroleum Chemistry, Siberian Branch of the Russian Academy of Sciences; Rússia
2. Autor principal Autor, estabelecimento, país V. Manzhay; the Russian Academy of Sciences; Rússia
3. Assunto Disciplinas
3. Assunto Palavras-chave cryogel; polyvinyl alcohol; ultimate strength; coal; briquettes
4. Descrição Resumo

Samples of cryogels based on aqueous solutions of polyvinyl alcohol were investigated. The molecular weights of cryogel samples varied from 25 × 103 to 60 × 103. It has been found out that the ultimate strength of dry briquettes increases from 1.2 to 3.7 MPa with an increase in the polymer molecular weight. The resulted briquettes can be used, for example, as a proper domestic or industrial fuel.

5. Editor Organizador, cidade The Russian Academy of Sciences
6. Contributor Patrocinadores
7. Data (DD-MM-AAAA) 04.10.2024
8. Tipo Tipo ou gênero da pesquisa Artigo avaliado por pares
8. Tipo Tipo Artigo científico
9. Formato Formato do arquivo
10. Identificador Identificador universal, URI https://journals.eco-vector.com/0023-1177/article/view/661635
10. Identificador Digital Object Identifier (DOI) 10.31857/S0023117724020141
10. Identificador eLIBRARY Document Number (EDN) OLKWRG
11. Fonte Revista/Conferêcia, tomo, número (ano) Himiâ tverdogo topliva; Nº 2 (2024)
12. Língua Russian=ru, English=en ru
13. Relação Arquivos suplementares Fig. 1. Dependence of dynamic viscosity of PVA solutions (C = 100 kg/m3) on shear rate at 20°C, where molecular mass of polymer samples: (1) 25,000 (degree of hydrolysis 88%); (2) 25,000; (3) 46,000; (4) 54,000; (5) 59,000 (76KB)
Fig. 2. Rheological unit constructed on the basis of Maxwell's model: (a) mock-up of the unit: (1) scale, (2) micrometer head, (3) micrometer, (4) micrometer stem, (5) cryogel sample, (6) tripod; (b) laboratory unit (79KB)
Fig. 3. Dependence of instantaneous modulus of elasticity of cryogels formed from PVA samples of different molecular weight on polymer concentration, at relative deformation of samples (ε = 0.08) (54KB)
Fig. 4. Cryogel: (a) microfragment of cryogel volume, polymer frame of which is formed from low molecular weight samples of polyvinyl alcohol; (b) microfragment of cryogel volume, polymer frame of which is formed from high molecular weight samples of PVA (115KB)
14. Cobertura Abrangência espacial e temporal, metodologia de pesquisa
15. Direitos Autorais Direitos Autorais e Licenças Declaração de direitos autorais © Russian Academy of Sciences, 2024