NDLI: Morphological and structural development of hardwood cellulose during mechanochemical pretreatment in solid state through pan-milling

Content Provider	Springer Nature Link
Author	Zhang, Wei Liang, Mei Lu, Canhui
Copyright Year	2007
Abstract	Mechanochemical pretreatment of hardwood cellulose was conducted by our self-designed pan-mill equipment which has an unique and smart structure and can exert strong shear forces and pressure on materials in between and break them down. The structure transformations, including particle size, powder morphology, molecular structure, crystalline structure during milling were investigated by Laser Diffraction Particle Size Analyzer, SEM, FT-IR and WAXD, respectively. Compared with standard method of ball-milling, the pan-mill shows a much higher efficiency in mechanochemical pretreatment of hardwood cellulose. The average particle size reduced to 21 μm and the specific surface area increased to 0.8 m2/g after 40 milling cycles. Mechanical milling also led to collapse of hydrogen bonds and reduction of crystallinity. The crystallinity index of cellulose powder decreased from its original 65 to 22, after milling for 40 cycles. Thermal analysis and solubility testing illustrated that pan-milled cellulose has lower thermal stability and higher solubility in aqueous alkali.
Starting Page	447
Ending Page	456
Page Count	10
File Format	PDF
ISSN	09690239
Journal	Cellulose
Volume Number	14
Issue Number	5
e-ISSN	1572882X
Language	English
Publisher	Springer Netherlands
Publisher Date	2007-06-27
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ball-milling Cellulose Crystallinity Mechanochemical Pan-milling Solubility Specific surface area Thermal degradation Polymer Sciences Organic Chemistry Physical Chemistry Bioorganic Chemistry
Content Type	Text
Resource Type	Article
Subject	Polymers and Plastics

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