Buscar
Mostrando ítems 1-10 de 12
New biphasic mono-component composite material obtained by partial oxypropylation of bacterial cellulose
(Springer, 2014-06-01)
The present work evaluates the partial oxypropylation of dried bacterial cellulose (BC) performed by grafting propylene oxide with potassium hydroxide as the catalyst. Samples were characterized by scanning electron ...
Self-reinforced composites obtained by the partial oxypropylation of cellulose fibers. 2. Effect of catalyst on the mechanical and dynamic mechanical properties
(SPRINGER, 2009)
This work describes the partial oxypropylation of filter paper cellulose fibers, employing two different basic catalyst, viz., potassium hydroxide and 1,4-diazabicyclo [2.2.2] octane, to activate the hydroxyl groups of the ...
Self-reinforced composites obtained by the partial oxypropylation of cellulose fibers. 1. Characterization of the materials obtained with different types of fibers
(ELSEVIER SCI LTD, 2009)
The in-depth oxypropylation of different types of cellulose fibers, namely Avicel, Rayon, Kraft, and Filter Paper, was investigated. New biphasic mono-component materials were obtained, which could be hot-pressed to form ...
Obtenção de nanocelulose a partir da funcionalização da celulose por oxipropilação
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Ciência dos Materiais - PPGCM-SoCâmpus Sorocaba, 2020-03-27)
The present study aimed to obtain functionalized nanocellulose through the oxypropylation reaction. Thereunto, the cellulose was submitted to an initial activation step with a sodium hydroxide solution, and then the reaction ...
Oxipropilação total e parcial de resíduos lignocelulósicos e oxipropilação parcial de celulose bacteriana para produção de polióis e obtenção de material bifásico monocomponente
(Universidade Federal de UberlândiaBRPrograma de Pós-graduação Multi-Institucional em Quimica (UFG - UFMS - UFU)Ciências Exatas e da TerraUFU, 2016)
Valorização da casca do pinhão, um subproduto da semente de Araucaria angustifolia, para produção de materiais poliméricos
(Universidade Tecnológica Federal do ParanáMedianeiraBrasilEngenharia de AlimentosUTFPR, 2016-07-21)
The valorisation of agro-forestry residues, namely the ones which do not have commercial value, have attracted the interest of academia and industrials contributing to generate new alternatives in the field of chemicals, ...
Preparação e caracterização de Blendas à base de Lignina Kraft Oxipropilada e AmidoPreparation and Characterization of Blends Based on Oxypropyl Kraft Lignin and Starch
(Universidade Federal de UberlândiaBrasilPrograma de Pós-graduação em Biocombustíveis, 2022)
Produção de cimento asfáltico de petróleo modificado por copolímeros elastoméricos tipo poliésteres, produzidos com polióis derivados de biomassa e ácido adípicoProduction of asphaltic petroleum cement modified by polyester elastomeric copolymers, produced with polyols derived from biomass and adipic acid
(Universidade Federal de UberlândiaBrasilQuímica Industrial, 2018)