caa a22 4500 465787282 CHVBK 20180323112013.0 cr unu---uuuuu 170327e19901001xx s 000 0 eng 10.1007/BF00294100 doi (NATIONALLICENCE)springer-10.1007/BF00294100 Electrochemically controlled molecular weight of polystyrene production [Elektronische Daten] [Jairo Márquez, Francisco López, Olga Márquez, Hugo Parra] Summary: It is well known that physical properties such as mechanical and thermal characteristics of a polymer are highly dependent on its molecular weight and molecular weight distribution (MWD). This feature encourages our interest for finding suitable conditions that allow us to control the molecular weight of the formed polymer, by controlling the experimental parameters. We are reporting some results about the electropolymerization of styrene in tetrahydrofuran with tetrabutylammonium tetrafluoroborate and sodium tetraphenylboron as supporting electrolytes. From the electrolyses using tetrabutylammonium tetrafluoroborate two molecular weight distribution curves, showing weight average molecular weight values ( $$\overline {{\text{MW}}} $$ ) of 3.6×105-1.7×106 for the first and 5×103 for the second one were observed. When using sodium tetraphenylboron a unique distribution curve was displayed suggesting that the weight average molecular weight of the polystyrene, increases by increasing the current density; the observed MWD being rather low. Springer-Verlag, 1990 Márquez Jairo Department of Chemistry, Universidad de Los Andes, 5101, Mérida, Venezuela aut López Francisco Department of Chemistry, Universidad de Los Andes, 5101, Mérida, Venezuela aut Márquez Olga Department of Chemistry, Universidad de Los Andes, 5101, Mérida, Venezuela aut Parra Hugo Department of Chemistry, Universidad de Los Andes, 5101, Mérida, Venezuela aut Polymer Bulletin Springer-Verlag 24/4(1990-10-01), 451-458 0170-0839 24:4<451 1990 24 289 https://doi.org/10.1007/BF00294100 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00294100 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Márquez Jairo Department of Chemistry, Universidad de Los Andes, 5101, Mérida, Venezuela aut NATIONALLICENCE 700 1- López Francisco Department of Chemistry, Universidad de Los Andes, 5101, Mérida, Venezuela aut NATIONALLICENCE 700 1- Márquez Olga Department of Chemistry, Universidad de Los Andes, 5101, Mérida, Venezuela aut NATIONALLICENCE 700 1- Parra Hugo Department of Chemistry, Universidad de Los Andes, 5101, Mérida, Venezuela aut NATIONALLICENCE 773 0- Polymer Bulletin Springer-Verlag 24/4(1990-10-01), 451-458 0170-0839 24:4<451 1990 24 289 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer