Zobrazeno 1 - 10
of 36
pro vyhledávání: '"M. Amine Abou-State"'
Autor:
Boshra M. Awad, M. Amine Abou-State
Publikováno v:
Journal of Applied Chemistry and Biotechnology. 27:399-404
This article reviews the solvation of cellulose by the action of N2O4 in presence of a suitable proton acceptor and its subsequent regeneration. The mechanism of the nitrosation reaction and the factors affecting cellulose degradation during solvatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b58786a7ca8936e336ab9401282315eb
https://doi.org/10.1002/jctb.5020270205
https://doi.org/10.1002/jctb.5020270205
Publikováno v:
Journal of Applied Chemistry and Biotechnology. 27:405-408
A new pulping method using sodium nitrate was successfully used for the purification of Egyptian cotton waste fibres. Sodium nitrate alone, sodium nitrate in nitric acid solution and sodium nitrate in sodium hydroxide solution were used in pulping. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca7f0e01facb102a5bad42bb159b4a1a
https://doi.org/10.1002/jctb.5020270206
https://doi.org/10.1002/jctb.5020270206
Autor:
Samia A. Helmy, M. Amine Abou-State
Publikováno v:
Journal of Applied Chemistry and Biotechnology. 22:1227-1232
Egyptian bagasse was pulped by the prehydrolysis-sulphate process. The effects of depithing on certain chemical, physical and sub-microscopic characteristics of the pulp, in particular its reactivity towards xanthation, were investigated. Depithing b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e36eb4de9b5a4592503ba6d4c55fb179
https://doi.org/10.1002/jctb.5020221205
https://doi.org/10.1002/jctb.5020221205
Publikováno v:
Journal of Applied Chemistry and Biotechnology. 22:993-999
Egyptian cotton linters were pulped by the nitric acid process. In order to reduce the high ash and silica contents of the resulting pulps it was found necessary to apply hot refining with sodium hydroxide solution. Different conditions of concentrat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ae070683ce1faf3fe9888ace88a36a8
https://doi.org/10.1002/jctb.5020220906
https://doi.org/10.1002/jctb.5020220906
Publikováno v:
Journal of Applied Chemistry and Biotechnology. 23:511-516
The whole corn plant was successfully used for the production of pulp and paper by employing comparatively simple procedures of atmospheric pressure digestion followed by multi-stage bleaching. Water pre-treatment was found necessary to remove the du
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ebf1a9bf32746624d338ab52000bcad
https://doi.org/10.1002/jctb.5020230707
https://doi.org/10.1002/jctb.5020230707
Publikováno v:
Journal of Applied Chemistry and Biotechnology. 23:505-509
Bagasse was pulped by the prehydrolysis-soda process. Increasing the concentration during prehydrolysis or pulping had a favourable effect on pulp properties. Further improvement in these properties was attained when the increase in concentration was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f41fc0bfc17c97edff674b70f39614d1
https://doi.org/10.1002/jctb.5020230706
https://doi.org/10.1002/jctb.5020230706
Autor:
M. M. El‐Morsy, M. Amine Abou-State
Publikováno v:
Journal of Applied Chemistry and Biotechnology. 22:863-865
Egyptian bagasse was pulped by the prehydrolysis-soda process followed by multi-state bleaching. Raising the concentration of sodium hydroxide used in the second step of bleaching improved the chemical characteristics of the pulp. Depithing had to be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4bb2ced592a89451a06c6527f5f79c64
https://doi.org/10.1002/jctb.5020220709
https://doi.org/10.1002/jctb.5020220709
Autor:
M. Amine Abou-State, Ahmed M. El-Masry
Publikováno v:
Journal of Applied Chemistry and Biotechnology. 23:925-927
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6735727c3755c34a7aa8ebc3af4ec0b4
https://doi.org/10.1002/jctb.5020231211
https://doi.org/10.1002/jctb.5020231211
Autor:
M. Amine Abou-State, Samia A. Helmy
Publikováno v:
Polymer Degradation and Stability. 41:245-251
Heterogeneous hydrolysis of cotton cellulose ( I ), alkali-treated cotton ( II ) and bagasse cellulose ( III ) was studied under mild conditions using 0·5 n hydrochloric acid solution. The degradation of the three pulps takes place in two stages, na
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7382460ac2bc17e7406d18b30e94308d
https://doi.org/10.1016/0141-3910(93)90049-o
https://doi.org/10.1016/0141-3910(93)90049-o
Autor:
M. Amine Abou-State, Samia A. Helmy
Publikováno v:
Holzforschung. 45:433-436
Prehydrolysed bagasse was subjected to soda pulping, soda-anthraquinone pulping and soda-ethylenediamine pulping. The effects of these different treatments on yield, degree of delignification, bleachability, chemical and physical characteristics of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::acd7818494715be82580da0115c6c4c2
https://doi.org/10.1515/hfsg.1991.45.6.433
https://doi.org/10.1515/hfsg.1991.45.6.433