Preparation and Characterization of Cellulose Nanofibers from Two Commercial Hardwood and Softwood Pulps

Stelte, Wolfgang; Sanadi, Anand R.

doi:10.1021/ie9011672

Cited by 307 publications

(171 citation statements)

References 36 publications

Supporting

Mentioning

160

Contrasting

Unclassified

Order By: Relevance

“…In the HCNF and PCNF paper sheets, the tensile strength and elastic modulus in the softwoods was higher than those in the hardwoods. Stelte and Sanadi (2009) and Spence et al (2010) also reported that the tensile properties of nanopapers prepared from softwood pulp were higher than those prepared from hardwood nanopaper. These results are assumed to be due to the greater length and high aspect ratio of the softwood fiber.…”

Section: Tensile Properties Of Nanopapermentioning

confidence: 95%

Preparation and Characterization of Cellulose Nanofibrils with Varying Chemical Compositions

Park¹,

Han²,

Namgung³

et al. 2017

BioResources

View full text Add to dashboard Cite

Cellulose nanofibrils (CNF) can be divided into lignocellulose nanofibrils (LCNF), holocellulose nanofibrils (HCNF), and pure cellulose nanofibrils (PCNF), dependent upon their chemical composition. The effect of the chemical composition on the defibrillation efficiency and the properties of the CNFs prepared by wet disk-milling was investigated using six different wood species. The defibrillation efficiency was improved when the lignin and hemicellulose was removed, and smaller fibers with diameters in the order of PCNF > HCNF > LCNF were produced. The average diameter of the hardwood LCNF was finer than that of the softwood LCNFs, but there was no noticeable difference in the diameters of the HCNF and the PCNF from the different wood species. The filtration time of CNF suspensions and the tensile properties of nanopaper sheets were longer and higher, respectively, in the order of HCNF > PCNF > LCNF from different wood species.

show abstract

Section: Tensile Properties Of Nanopapermentioning

confidence: 95%

Preparation and Characterization of Cellulose Nanofibrils with Varying Chemical Compositions

Park¹,

Han²,

Namgung³

et al. 2017

BioResources

View full text Add to dashboard Cite

show abstract

“…The process in fibrillation was studied using different microscopy techniques, mechanical testing, and fiber density measurements of cellulose films prepared after different processing stages. An increase in processing steps obviously increases the energy required for fibrillation [63]. For the island-in-sea method, fibers of diameter less than one micrometer can be made by the conjugated spinning method, in which two polymer components are extruded together from a spinning die.…”

Section: Template Methodsmentioning

confidence: 99%

Multifunctional Nanofibers towards Active Biomedical Therapeutics

et al. 2015

View full text Add to dashboard Cite

One-dimensional (1-D) nanostructures have attracted enormous research interest due to their unique physicochemical properties and wide application potential. These 1-D nanofibers are being increasingly applied to biomedical fields owing to their high surface area-to-volume ratio, high porosity, and the ease of tuning their structures, functionalities, and properties. Many biomedical nanofiber reviews have focused on tissue engineering and drug delivery applications but have very rarely discussed their use as wound dressings. However, nanofibers have enormous potential as wound dressings and other clinical applications that could have wide impacts on the treatment of wounds. Herein, the authors review the main fabrication methods of nanofibers as well as requirements, strategies, and recent applications of nanofibers, and provide perspectives of the challenges and opportunities that face multifunctional nanofibers for active therapeutic applications.

show abstract

“…Facial tissues are made from wood pulp, which is obtained from both hardwood and softwood. Hardwoods are, in general, more complex and heterogeneous in structure than softwoods, and they have shorter fiber cells than softwoods [1]. In addition, softwood fibers are known to be stronger than hardwood fibers [1].…”

Section: Introductionmentioning

confidence: 99%

“…Hardwoods are, in general, more complex and heterogeneous in structure than softwoods, and they have shorter fiber cells than softwoods [1]. In addition, softwood fibers are known to be stronger than hardwood fibers [1]. Facial tissues produced by mixing these two types of wood pulp at certain rates allow for desired properties, such as softness and strength, to be obtained.…”

Section: Introductionmentioning

confidence: 99%

Textural Characteristics and Friction Properties of Facial Tissues

et al. 2017

View full text Add to dashboard Cite

In the current study, we conducted sensory tests for facial tissues that are commercially available in Japan, and we also tested the friction generated by the rubbing of these tissues on an artificial skin model. Using these results, we investigated the factors affecting the textural characteristics of the facial tissues. The tissue sample which contained a moisturizing agent had the highest evaluation score among the samples. Mean friction coefficient decreased as the sliding velocity decreased for low normal loads. The tissue samples which contained moisturizing agents had the low friction coefficients. From the multiple regression analysis to obtain the highest value of the adjusted coefficient of determination, the mean friction coefficient for a normal load of 0.49 N and a sliding velocity of 1 mm/s was the only parameter surprisingly that could be used to predict the evaluation scores; specifically, there was a negative correlation between the mean friction coefficient and the scores. In order to reduce the friction, one should seek to increase the moisture content of a facial tissue or decrease the tensile strength perpendicular to the fiber direction in dry facial tissues. Increasing the elastic modulus and surface roughness and decreasing the fiber diameter were effective methods for reducing the friction coefficient of facial tissues that did not contain moisturizing agents.

show abstract

Preparation and Characterization of Cellulose Nanofibers from Two Commercial Hardwood and Softwood Pulps

Cited by 307 publications

References 36 publications

Preparation and Characterization of Cellulose Nanofibrils with Varying Chemical Compositions

Preparation and Characterization of Cellulose Nanofibrils with Varying Chemical Compositions

Multifunctional Nanofibers towards Active Biomedical Therapeutics

Textural Characteristics and Friction Properties of Facial Tissues

Contact Info

Product

Resources

About