Zobrazeno 1 - 10
of 155
pro vyhledávání: '"C. Pascoal Neto"'
Autor:
J. Morgado, A. T. Pereira, A. M. Braganca, Q. Ferreira, S. C. M. Fernandes, C. S. R. Freire, A. J. D. Silvestre, C. Pascoal Neto, L. Alcacer
Publikováno v:
eXPRESS Polymer Letters, Vol 7, Iss 12, Pp 960-965 (2013)
Organic thin film transistors, using self-standing 50 µm thick chitosan films as dielectric, are fabricated using sublimed pentacene or two conjugated polymers deposited by spin coating as semiconductors. Field-effect mobilities are found to be simi
Externí odkaz:
https://doaj.org/article/87b1f506ccd3414aab0c8fd884206072
Autor:
Carmen S. R. Freire, Rui J.C. Silva, Inês Brandão, C. Pascoal Neto, Artur Ferreira, Ana Barros-Timmons, Nuno Gama, Belinda Soares
Publikováno v:
Polymer International. 64:250-257
The aim of this study was to evaluate the possibility of using polyols derived from liquefied cork in the production of novel bio-based polyurethane foams (PUFs). For that purpose, different liquefaction conditions were used at atmospheric pressure a
Publikováno v:
Journal of Nanoscience and Nanotechnology. 12:6817-6821
The controlled hydrolysis of FeC2O4 in the presence of vegetable cellulose fibres was investigated to produce a pallet of cellulose/iron oxide hybrid colored materials. Distinct iron oxide phases have been deposited at the cellulose fibres surfaces b
Autor:
Carlos M. Silva, C. Pascoal Neto, Armando J. D. Silvestre, Rui M. A. Domingues, Carmen S. R. Freire, G.D.A. Sousa
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
The chemical composition of the lipophilic extracts of the inner and outer bark fractions of Eucalyptus grandis and Eucalyptus urograndis (E. grandis x Eucalyptus urophylla) cultivated in Brazil and Eucalyptus maidenii, cultivated in Portugal was stu
Autor:
Armando J. D. Silvestre, G.D.A. Sousa, Carmen S. R. Freire, Rui M. A. Domingues, C. Pascoal Neto
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
The chemical composition of the lipophilic extracts of Eucalyptus globulus harvesting residues and bark generated by the pulp industry was studied by gas chromatography–mass spectrometry. Triterpenoids, mainly triterpenic acids with lupane, ursane
Autor:
Ana S. Santiago, C. Pascoal Neto
Publikováno v:
Journal of Chemical Technology & Biotechnology. 83:1298-1305
BACKGROUND: Increasing the yield of the wood pulping process allows the reduction of specific wood costs. Process modifications with a great impact on pulp yield are the profiling of chemical charges and addition of anthraquinone (AQ). The aim of the
Publikováno v:
Journal of Chemical Technology & Biotechnology. 83:242-251
BACKGROUND: Eucalyptus globulus is an important wood source for paper production and, in the last few years, great efforts have been made to assess its chemical specificities and improve the kraft pulping efficiency. Despite the existence of several
Autor:
Ana S. Santiago, C. Pascoal Neto
Publikováno v:
Journal of Chemical Technology & Biotechnology. 82:424-430
The main goal of this work is to study the potential approaches to improve polysaccharides retention during Eucalyptus globulus kraft pulping. The addition of anthraquinone to kraft pulping leads to the highest pulp yield while the addition of urea p
Autor:
Armando J. D. Silvestre, C. Pascoal Neto, Alessandro Gandini, Mohamed Naceur Belgacem, Carmen S. R. Freire
Publikováno v:
Journal of Applied Polymer Science. 100:1093-1102
The controlled heterogeneous partial modification of cellulose fibers with fatty acids, partially preserving the fiber structure, was investigated. The effect of reaction conditions, such as reaction time, fatty acid chain length, and solvent types (
Publikováno v:
Applied Catalysis A: General. 295:134-141
A series of transition metal substituted polyoxotungstates (TMSP) were tested as catalysts for the oxygen delignification of eucalypt kraft pulp. These include Mn substituted polyoxotungstates of Keggin-type, α - [ Si W ( 12 − n ) M n n III ( H 2