摘要
木质素磺酸盐是以木材为原料酸法制浆造纸工业的副产物,广泛用作分散剂、粘合剂等。由于它是以苯丙烷为结构单元的水溶性高分子化合物,其分子量的测定有Sephadex凝胶法和用BioGel P、TSK PW、Waters Ⅰ系列、Waters
Aqueous gel permeation chromatography or low-molecular-weight lignosulfonates from pulp industry was performed with a porous silica-based μ-Bondagel E-125 column and calibrated with sodium polystyrene sulfonate standards. No evidence of adsorption was observed when an appropriate eluent.0. 01 mol/L NaCl/ CH3CN (80/20), was employed at a flowrate of 0. 8 ml/min. The results of molecular weight and its distribution of sodium lignosulfonate sample so determined (Mn=973,Mw=1927,d = 1. 98)were similar to those analyzed with μ-Styragel series column (Mn = 1124, Mw=2234,d = 1. 99),while with the latter desulfona-tion of lignosulfonate is needed before tetrahydrofuran elution.
出处
《色谱》
CAS
CSCD
北大核心
1992年第6期375-376,共2页
Chinese Journal of Chromatography
