Citation: CUI Peng, FANG Hongxia, WU Qianglin, QIAN Chen. Relative molecular mass determination of phenolated depolymerized sodium lignosulfonate by advanced polymer chromatography system[J]. Chinese Journal of Chromatography, ;2015, 33(3): 314-317. doi: 10.3724/SP.J.1123.2014.10030 shu

Relative molecular mass determination of phenolated depolymerized sodium lignosulfonate by advanced polymer chromatography system

CUI Peng ^1,2 ,
FANG Hongxia ^1,, ,
WU Qianglin ¹ ,
QIAN Chen ¹

1.
1. Applied Chemistry Laboratory, Huangshan University, Huangshan 245041, China;

Corresponding author: FANG Hongxia,
Received Date: 31 October 2014
Available Online: 2 December 2014
Fund Project: 安徽省自然科学基金项目(1208085MB33). (1208085MB33)

Advanced polymer chromatography (APC) is a newly developed high resolution polymer characterization technique. Within 10 min, it can separate polymers with high resolution and obtain the average relative molecular mass distribution parameters of the polymers. The M_r distribution of the depolymerized lignin product was well characterized with low relative standard deviation (RSD less than 1%) by APC system using ACQUITY AQ 450 Å, 200 Å, and 45 Å columns in series, with 10 μL injection volume, and weak alkaline phosphate buffer solution as the aqueous mobile phase at a flow rate of 0.5 mL/min. Compared with traditional gel permeation chromatography (GPC), the APC system had the advantages of high sensitivity and good reproducibility. The technique to determine the average relative molecular mass distribution of depolymerized lignin oligomers in aqueous phase described in this paper will pave the way for new methods to separate and analyze high performance natural materials, and the feasible method for the investigation of the mechanism of depolymerization and the regulation for liquefied lignin would also be established.
- advanced polymer chromatography (APC),
- sodium lignosulfonate,
- average relative molecular mass,
- polydispersity index (PDI),
- depolymerization,
- aqueous phase
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