Zobrazeno 1 - 10
of 174
pro vyhledávání: '"M. Nekoomanesh"'
Publikováno v:
علوم و تکنولوژی پلیمر, Vol 23, Iss 5, Pp 379-386 (2010)
Bis(indenyl)zirconium dichloride as a catalyst was synthesized using a modified method at the room temperature. Polymerization of ethylene and copolymerization of ethylene and propylene were carried out by this metallocene catalyst. Ethylene propylen
Externí odkaz:
https://doaj.org/article/3b68a503d71f4121a0776079b124699f
Publikováno v:
علوم و تکنولوژی پلیمر, Vol 23, Iss 2, Pp 171-179 (2010)
MgCl2/C2H5OH adducts with constant relative ratio of 1/3 were prepared and kept at 120oC for different lengths of times of 5, 10, 20, 30, 50, 90,120 and 220 h. Then the samples were quenched and analyzed by XRD and BET. No meaningful changes were obs
Externí odkaz:
https://doaj.org/article/d6222cc103ac4ababd8a7b8ff65a3abe
Publikováno v:
علوم و تکنولوژی پلیمر, Vol 23, Iss 5, Pp 405-413 (2010)
The effects of magnesium hydroxide and l-lactide dimer as additives on thermal properties and morphology of poly(l-lactide) (PLLA) films were studied. Hence, neat PLLA films and films containing additives (10% w/w) were prepared in dichloromethane at
Externí odkaz:
https://doaj.org/article/b17925d48953427a94c8efa9b0034ee6
Publikováno v:
علوم و تکنولوژی پلیمر, Vol 23, Iss 6, Pp 499-507 (2010)
In suspension polymerization, particle size distribution of polymer is the outcome of dynamic equilibrium between the break up and coalescence phenomena. The rates of break up and coalescence and consequently polymerization stability depend on severa
Externí odkaz:
https://doaj.org/article/b5866f66c88e4c71afaee8f6f9766dd5
Publikováno v:
علوم و تکنولوژی پلیمر, Vol 22, Iss 5, Pp 353-362 (2009)
Full factorial experimental design (23) for the evaluation of slurry ethylene polymerization in the presence of an industrial TiCl4/MgCl2 Ziegler-Natta catalyst was employed. The following parameters were used as independentvariables: Al/Ti molar rat
Externí odkaz:
https://doaj.org/article/823d0ca278884b95a5d924da333830d4
Publikováno v:
علوم و تکنولوژی پلیمر, Vol 21, Iss 3, Pp 243-250 (2008)
MCM-41 is one of the groups of mesoporous materials that have wide applications as adsorbents, ion exchangers and catalyst supports. In this work spherical and rod-like MCM-41s were synthesized in homogeneous and heterogeneous reaction media, respect
Externí odkaz:
https://doaj.org/article/7f6a9304fe2b4cffb91defe64a095809
Publikováno v:
علوم و تکنولوژی پلیمر, Vol 18, Iss 4, Pp 219-227 (2005)
Externí odkaz:
https://doaj.org/article/5b4939f29f4a466d8af3a5270536b063
Publikováno v:
علوم و تکنولوژی پلیمر, Vol 16, Iss 5 (2003)
Externí odkaz:
https://doaj.org/article/74b8a4f7c28f43aaa7acea57d26de1f9
Publikováno v:
علوم و تکنولوژی پلیمر, Vol 15, Iss 5 (2002)
Externí odkaz:
https://doaj.org/article/3b2d91654e484109a250e5addccf2733
Publikováno v:
علوم و تکنولوژی پلیمر, Vol 15, Iss 6 (2002)
Externí odkaz:
https://doaj.org/article/fa9f03a51cb140ee8bea3259cb7ecf46