An Integrated Approach to Optimizing Cellulose Mercerization

被引：30
|
作者：
Ferro, Monica [1 ]
Mannu, Alberto [1 ]
Panzeri, Walter [2 ]
Theeuwen, Con H. J. [3 ]
Mele, Andrea [1 ,2 ]
机构：
[1] Politecn Milan, Dept Chem Mat & Chem Engn G Natta, Piazza L da Vinci 32, I-20133 Milan, Italy
[2] CNR SCITEC, Ist Sci & Tecnol Chim, Via Alfonso Corti 12, I-20133 Milan, Italy
[3] Nouryon Chem Bv, Westervoortsedijk 73, NL-6827 AV Arnhem, Netherlands
来源：
POLYMERS | 2020年 / 12卷 / 07期
关键词：
Cellulose; mercerization; XRD; PCA; DoE; X-RAY-DIFFRACTION; HYDROGEN-BONDING SYSTEM; CRYSTALLINE-STRUCTURE; SODIUM-HYDROXIDE; PART I; FIBERS; WATER; NAOH; MERCERISATION; OPTIMIZATION;
D O I：
10.3390/polym12071559
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
An integrated approach, based on quantitative transmission mode powder X-ray diffraction (PXRD) combined with multivariate statistical analysis, has been applied to cellulose obtained from three different sources to correlate the mercerization degree and crystallinity with the cellulose type, temperature, and reaction time. The effects of the experimental conditions on the two outcomes were studied by design of experiments (DoE) and surface responding analysis (SRA) combined with principal component analysis (PCA). SRA showed a marked influence of the type of cellulose (wood cellulose from the kraft vs. sulfite process, WCK vs. WCS) on the conversion of cellulose I to cellulose II (CII%) during mercerization. A counterintuitive simultaneous effect of temperature and cellulose type was also highlighted. The data elaboration in the form of response surface plots provided an easy predictive tool for the optimum conditions to maximize the conversion. The simulation reported for WCK showed maximum conversion (96%) at 70 degrees C in 24 h with 18%wt NaOH.
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页码：1 / 16
页数：16
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