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effect of chemical composition on microfibrillar cellulose films from wood pulps: water interactions and physical properties for packaging applications

Cellulose (London), 2010-08, Vol.17 (4), p.835-848 [Tạp chí có phản biện]

Springer Science+Business Media B.V. 2010 ;Cellulose is a copyright of Springer, (2010). All Rights Reserved. ;ISSN: 0969-0239 ;EISSN: 1572-882X ;DOI: 10.1007/s10570-010-9424-8

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Nhan đề:
effect of chemical composition on microfibrillar cellulose films from wood pulps: water interactions and physical properties for packaging applications
Tác giả: Spence, Kelley L ; Venditti, Richard A ; Rojas, Orlando J ; Habibi, Youssef ; Pawlak, Joel J
Chủ đề: Adsorbed water ; Bioorganic Chemistry ; Ceramics ; Chemical composition ; Chemistry ; Chemistry and Materials Science ; Composites ; Composition effects ; Contact angle ; Energy requirements ; Food packaging ; Glass ; Hard-to-remove water ; Lignin ; Lignin-containing microfibrillated cellulose (MFC) ; Low density polyethylenes ; Moisture content ; Morphology ; Nanofibrillar cellulose (NFC) ; Natural Materials ; Optical properties ; Organic Chemistry ; Paraffin wax ; Physical Chemistry ; Physical properties ; Polymer Sciences ; Production costs ; Recycled materials ; Specific surface ; Specific surface area ; Surface area ; Sustainable Development ; Water interactions ; Water vapor
Là 1 phần của: Cellulose (London), 2010-08, Vol.17 (4), p.835-848
Mô tả: The interactions with water and the physical properties of microfibrillated celluloses (MFCs) and associated films generated from wood pulps of different yields (containing extractives, lignin, and hemicelluloses) have been investigated. MFCs were produced by combining mechanical refining and a high pressure treatment using a homogenizer. The produced MFCs were characterized by morphology analysis, water retention, hard-to-remove water content, and specific surface area. Regardless of chemical composition, processing to convert macrofibrils to microfibrils resulted in a decrease in water adsorption and water vapor transmission rate, both important properties for food packaging applications. After homogenization, MFCs with high lignin content had a higher water vapor transmission rate, even with a higher initial contact angle, hypothesized to be due to large hydrophobic pores in the film. A small amount of paraffin wax, less than 10%, reduced the WVTR to a similar value as low density polyethylene. Hard-to-remove water content correlated with specific surface area up to approximately 50 m²/g, but not with water retention value. The drying rate of the MFCs increased with the specific surface area. Hornified fibers from recycled paper also have the potential to be used as starting materials for MFC production as the physical and optical properties of the films were similar to the films from virgin fibers. In summary, the utilization of lignin containing MFCs resulted in unique properties and should reduce MFC production costs by reducing wood, chemical, and energy requirements.
Nơi xuất bản: Dordrecht: Dordrecht : Springer Netherlands
Ngôn ngữ: English
Số nhận dạng: ISSN: 0969-0239
EISSN: 1572-882X
DOI: 10.1007/s10570-010-9424-8
Nguồn: Alma/SFX Local Collection
ProQuest Central

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effect of chemical composition on microfibrillar cellulose films from wood pulps: water interactions and physical properties for packaging applications

Springer Science+Business Media B.V. 2010 ;Cellulose is a copyright of Springer, (2010). All Rights Reserved. ;ISSN: 0969-0239 ;EISSN: 1572-882X ;DOI: 10.1007/s10570-010-9424-8

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