| 摘要 |
<p>The mixture is made from an aqueous solution of acrylamide and an aqueous solution containing a polymerisation initiator; on the one hand, at least one of the solutions contains a coloured indicator which has a given colour in the acrylamide-based solution and a different colour in the solution containing the initiator and whose colour change region corresponds to the optimum proportion of the reactants in solution and, on the other hand, during the mixing, the respective quantities of the two solutions in the change region of the coloured indicator are adjusted so that the mixture has the colour corresponding to that of the indicator in the acrylamide-based solution.
<??>The mixture preferably contains acrylamide, methylenebisacrylamide, triethanolamide glycol, ammonium persulphate as initiator, and, as coloured indicator, bromophenol blue, the colour of which disappears after the polymerisation. </p> |
