The effect of micro and nanofibrillated cellulose water uptake on high filler content composite paper properties and furnish dewatering

Cellulose ◽  
2015 ◽  
Vol 22 (6) ◽  
pp. 4003-4015 ◽  
Author(s):  
Juuso Rantanen ◽  
Katarina Dimic-Misic ◽  
Jonna Kuusisto ◽  
Thad C. Maloney
Keyword(s):  
Water Uptake ◽  
Filler Content ◽  
Nanofibrillated Cellulose ◽  
Paper Properties ◽  
Composite Paper

Effects of Temperature and Nano-filler Content on Water Uptake in Nanocomposites

Polymer Korea ◽  
2019 ◽  
Vol 43 (4) ◽  
pp. 584-588
Author(s):  
Pyoung-Chan Lee ◽  
Jin Uk Ha ◽  
Su Young Kim ◽  
Chanhyeok Um ◽  
Sang Hoon Kim ◽  
...  
Keyword(s):  
Water Uptake ◽  
Filler Content ◽  
Effects Of Temperature

Properties of Sago Starch-Based Biopolymers with Clay, Cellulose, Zinc Oxide and Chitosan Fillers

2018 ◽  
Vol 917 ◽  
pp. 32-36 ◽  
Author(s):  
Bahruddin ◽  
Zwilla Oktoriana Hendri ◽  
Anugerah Rifaldi ◽  
Annur Fauzi Syaputra ◽  
Ummy Aisyah Rochaeni
Keyword(s):  
Zinc Oxide ◽  
Water Uptake ◽  
Filler Content ◽  
Raw Material ◽  
Sago Starch ◽  
Glycerol Content ◽  
Elongation At Break ◽  
Sem Micrograph ◽  
High Starch ◽  
Chitosan Biopolymer

Sago (Metroxylon spp) is one of plant that contains high starch, so it has potential to be utilized as raw material for biopolymer production. This study aims to compare the properties and morphology of sago starch-based biopolymers reinforced by different filler types, including clay, cellulose, zinc oxide and chitosan. Biopolymer sample was prepared at 75 °C with ratio of water to the starch of 10 ml/gr, glycerol content of 0.1 ml/gr of the starch and filler content 6% w/w. The testing included tensile, water uptake and biodegradability properties according to ASTM D882, ASTM D570 and DIN EN ISO 846 standards, respectively. Other testing also conducted for morphology by using scanning electron microscope (SEM). The results showed that biopolymer with chitosan filler has better tensile, water uptake and biodegrability properties compared to other filler type, with tensile stregth of 11 MPa, elongation at break of 9%, water uptake of 10% and biodegrability of 40%. The SEM micrograph shows that the filler still has an agglomerated portion in the starch matrix. Increasing the biopolymer properties is still possible by improving the morphology.

scholarly journals Dependence between paper properties and spectral optical response of uncoated paper

2012 ◽  
Vol 27 (2) ◽  
pp. 440-444
Author(s):  
Håkan Hägglund ◽  
Ole Norberg ◽  
Magnus Neuman ◽  
Per Edström
Keyword(s):  
Light Scattering ◽  
Light Absorption ◽  
Large Scale ◽  
Filler Content ◽  
Optical Response ◽  
Optical Measurements ◽  
Scattering Coefficient ◽  
Small Scale ◽  
Paper Properties ◽  
Uncoated Paper

Abstract This paper presents a method to describe, with good accuracy, the relation between variations in paper properties and variations of the spectral optical response of an uncoated paper. The dependence between density, filler content, grammage, and the spectral optical response is characterized by a multivariate model. The model is based on large-scale measurements data on a set of paper samples that have been produced with different values of grammage, density and filler content, representing the variations within a normal 80 g/m² uncoated paper. From the optical measurements the light scattering (s) and light absorption (k) coefficients have been estimated according to the Kubelka-Munk theory. The results from this study will give valuable input to optical modeling activities, where the optical variations are predicted from measured small-scale variations in underlying paper properties. The variations in the paper properties can be used to model the light scattering coefficient, s, but there were too small variations in the light absorption coefficient, k, to find any significant dependence to the paper properties for the samples studied in this work. Furthermore, linear models give sufficient accuracy in the intervals studied. Additional findings from this study are the different effects of wet-pressing and calendering on the light scattering coefficient.

Engineered porous calcium silicate as paper filler: effect of filler morphology on paper properties

2018 ◽  
Vol 33 (3) ◽  
pp. 534-541 ◽  
Author(s):  
Shunxi Song ◽  
Xiaoli Zhen ◽  
Meiyun Zhang ◽  
Lin Li ◽  
Bin Yang ◽  
...  
Keyword(s):  
Calcium Silicate ◽  
Filler Content ◽  
High Specific Surface Area ◽  
Paper Properties ◽  
Noticeable Improvement ◽  
Special Morphology ◽  
Physical Tests ◽  
Increase Filler Content ◽  
Spherical Agglomerates ◽  
Paper Filler

Abstract Developing engineered filler with special morphology to increase filler content and deliver paper desirable properties has been deserved much concern. In this work, two engineered calcium silicate fillers with different morphology, namely fly ash based calcium silicate (FACS), fibrous calcium silicate (FCS) were adopted to investigate the effect of filler morphology on paper properties, and natural wollastonite was used for comparison. It is found that FACS exhibits a wrinkled, porous surface while FCS reveals spherical agglomerates composed of needle-like particles. Physical tests demonstrated that in comparison with natural wollastonite with discrete shape, the aggregated porous structure of FACS and FCS showed noticeable improvement in bulk and opacity due to their high specific surface area (112 m2/g v.s 29 m2/g). At around 40 % filler content, the bulk of FACS and FCS filled handsheets increased 59.6 % and 43.8 %, respectively. The findings suggested that the engineered porous calcium silicate can be potentially used as paper filler in light weighted paper.

Fabrication of mechanically robust and UV-resistant aramid fiber-based composite paper by adding nano-TiO2 and nanofibrillated cellulose

Cellulose ◽  
2018 ◽  
Vol 25 (7) ◽  
pp. 3913-3925 ◽  
Author(s):  
Yongsheng Zhao ◽  
Wanbin Dang ◽  
Zhaoqing Lu ◽  
Junbo Deng ◽  
Yang Hao ◽  
...  
Keyword(s):  
Nanofibrillated Cellulose ◽  
Aramid Fiber ◽  
Nano Tio2 ◽  
Composite Paper

Filler modified by a sequential encapsulation and preflocculation method and its effect on paper properties

2020 ◽  
Vol 35 (1) ◽  
pp. 89-95
Author(s):  
Nannan Chen ◽  
Lijun Wang ◽  
Junchao Wen ◽  
Xianping Yao ◽  
Wenyan Zhao
Keyword(s):  
Filler Content ◽  
Strength Properties ◽  
Paper Strength ◽  
Cationic Starch ◽  
Paper Properties ◽  
Polyelectrolyte Complexes ◽  
New Methods ◽  
Charge Potential ◽  
Filler Retention ◽  
Anionic Polyacrylamide

AbstractIncreasing the filler content of sheet tends to decrease filler retention and paper strength properties. To overcome this problem and make better use of fillers, development of new methods on filler modification has never been stopped. In this study, filler modification was carried out by sequentially adding an anionic polyacrylamide, a cationic starch and a cationic polyacrylamide. It is believed that in this process, multiple polyelectrolyte complexes are formed which can not only encapsulate filler particles but also preflocculate the particles. The results showed that, compared to the single preflocculation treatment, the sequential encapsulation and preflocculation (SEP) treatment brought significantly larger particle size and higher surface charge potential of the filler, thus higher filler retention was achieved. When the modified fillers were used for papermaking and paper ash contents were controlled at the same level, the SEP modification was better in improving the tensile index, internal bond strength and tearing index of paper than the single preflocculation method, in addition, it maintained better paper formation, caused insignificant change on opacity of paper. It is believed that this newly developed SEP method is worthy of being applied to industrial scales in making various grades of filled paper.

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