Premium
Effect of cellulose concentration in NMMO·H 2 O solution on prediction of MW and MWD of cellulose using a rheology‐based method
Author(s) -
Zhang Huiru,
Liu Xiaoyun,
Li Dongshuang,
Li Rongxian
Publication year - 2009
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.21156
Subject(s) - cellulose , rheology , dispersity , materials science , molar mass distribution , chemical engineering , polymer , polymer chemistry , polymer science , composite material , engineering
Prediction of molecular weight (MW) and molecular weight distribution (MWD) of cellulose by means of a rheology‐based method is developed. In this method, the effect of cellulose concentration in N ‐methlymorpholine‐ N ‐oxide monohydrate (NMMO·H 2 O) solution on predicting results is discussed. It is shown that there is no significant effect of cellulose concentration on predicting results when the cellulose concentration in NMMO·H 2 O solution is high enough. Meanwhile, the obtained results are compared with those of gel permeation chromatograghy (GPC) method. The comparison shows that the calculated peak MW, polydispersity index (PDI) and MWD curves have the same trends. Consequently, it may be feasible to compare the MW and MWD of cellulose by using the rheology‐based method. In addition, the rheology‐based method is simple and fast. Therefore it is a useful and easy way to analyze the MW and MWD of cellulose in the fiber industry. POLYM. ENG. SCI., 2009. © 2009 Society of Plastics Engineers