An Integrated Approach to Optimizing Cellulose Mercerization

Polymers

Walter Panzeri¹  Monica Ferro²  Alberto Mannu²  Andrea Mele²  Con H.J. Theeuwen³ 

[1] CNR–SCITEC, Istituto di Scienze e Tecnologie Chimiche, Via Alfonso Corti 12, 20133 Milano, Italy;Department of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Piazza L. da Vinci 32, 20133 Milano, Italy;Nouryon Chemicals bv, Westervoortsedijk 73, 6827 AV Arnhem, The Netherlands;

关键词: Cellulose;    mercerization;    XRD;    PCA;    DoE;   

DOI  :  10.3390/polym12071559

来源: DOAJ

【 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 °C in 24 h with 18%wt NaOH.

【 授权许可】

Unknown