Study on Mercerization Orthogonal Experiment of Coniferous Wood Pulp Fiber

2014 ◽  
Vol 1030-1032 ◽  
pp. 454-457
Author(s):  
Quan Xiao Liu ◽  
Dan Xi Li ◽  
Wen Cai Xu
Keyword(s):  
Water Retention ◽  
Orthogonal Experiment ◽  
Wood Pulp ◽  
Pulp Fiber ◽  
Pulp Fibers ◽  
Water Retention Value ◽  
Treatment Conditions ◽  
Fiber Cell Wall ◽  
Coniferous Wood ◽  
Wood Pulp Fiber

Effects of mercerizing treatment on water-retention value of bleaching coniferous wood pulp fibers were discussed and the mercerizing treatment conditions were optimized. The best conditions of mercerizing treatment is NaOH concentration of 7mol/L, temperature of 40°C and processing time of 100min. SEM showed that the fiber cell wall swelling increase after mercerization.

Study on Effort of Ultrasonic Treatment on Water Retention Value of Pulp Fiber

2014 ◽  
Vol 1030-1032 ◽  
pp. 458-461
Author(s):  
Quan Xiao Liu ◽  
Dan Xi Li ◽  
Wen Cai Xu
Keyword(s):  
Ultrasonic Treatment ◽  
Processing Time ◽  
Water Retention ◽  
Wood Pulp ◽  
Pulp Fiber ◽  
Ultrasonic Power ◽  
Pulp Fibers ◽  
Water Retention Value ◽  
Absorbent Cotton ◽  
Coniferous Wood

Effects of ultrasonic processing conditions on water retention value of bleaching coniferous wood pulp fibers, absorbent cotton pulp fiber and straw pulp fiber were discussed. Results showed that ultrasonic power and processing time have an significant impact on water retention value of three kinds of pulp, the effort of ultrasonic treatment temperature on water retention value of three kinds of pulp is less. The water retention value of bleaching coniferous wood pulp fibers, absorbent cotton pulp fiber and straw pulp fiber, respectively, reach the maximum at power of 300W, 500W, 400W, and processing time of 60min, 120min, 60min.

Mercerization and Characterization of Straw Pulp Fibers

2013 ◽  
Vol 781-784 ◽  
pp. 2645-2649
Author(s):  
Yan Na Yin ◽  
Quan Xiao Liu ◽  
Yu Bin Lyu
Keyword(s):  
Cell Wall ◽  
Processing Time ◽  
Water Retention ◽  
Fiber Cell ◽  
Pulp Fibers ◽  
Water Retention Value ◽  
Treatment Conditions ◽  
Fiber Cell Wall

Effects of mercerizing treatment on water-retention value of straw pulp fibers were discussed and the mercerizing treatment conditions were optimized. The best conditions of mercerizing treatment is NaOH concentration of 4mol/L, temperature of 40°C and processing time of 60min. SEM showed that the fiber cell wall swelling increase after mercerization.

Preparation and Properties of Straw Pulp Fiber/Magnetic Nano-Composites

2013 ◽  
Vol 781-784 ◽  
pp. 2641-2644 ◽  
Author(s):  
Quan Xiao Liu ◽  
Yan Na Yin ◽  
Yu Bin Lyu
Keyword(s):  
Ultrasonic Treatment ◽  
Processing Time ◽  
Water Retention ◽  
Magnetic Particles ◽  
Pulp Fiber ◽  
Ultrasonic Power ◽  
Pulp Fibers ◽  
Water Retention Value ◽  
Fiber Cells ◽  
Treatment Conditions

Effects of ultrasonic treatment on water-retention value of straw pulp fibers were discussed and the ultrasonic treatment conditions were optimized. The best conditions of ultrasonic treatment as follows: ultrasonic power is 400W, processing time is 90min and temperature is 40°C. SEM shows that a large number of magnetic particles were left inside the pulp fiber cells. Automated Surface Area & Pore Size Analyzer shows a good superparamagnetic behavior.

Effect of Different Factors on the Fibrillation Degree of Lyocell Fiber Based on Homogenization Treatment

2017 ◽  
Vol 898 ◽  
pp. 2309-2317
Author(s):  
Qiao Li ◽  
Chen Jiang ◽  
Ge Sheng Yang ◽  
Hui Hui Zhang ◽  
Min Min Yu ◽  
...  
Keyword(s):  
Water Retention ◽  
Orthogonal Experiment ◽  
Polarized Light ◽  
Characteristic Parameter ◽  
Water Retention Value ◽  
Homogenization Treatment ◽  
Factors Affecting ◽  
Treatment Conditions ◽  
Extreme Difference ◽  
Lyocell Fiber

The homogenization treatment was performed to fibrillate Lyocell fiber, and then the effects of different factors including NaOH concentration, homogeneous time, temperature and bath ratio on the fibrillation degree of Lyocell fiber were investigated through the orthogonal experiment. Various characterization techniques were employed to compare the fibrillation degree of Lyocell fiber. The polarized light microscope (POM) and scanning electron microscope (SEM) were used to observe the appearance of the fiber after different treatment, and the results showed that it was a quick and efficient approach to obtain the fibrillated Lyocell fiber by homogenization treatment, and the fibrillation degree of fibers varied with different treatment conditions. The results of water retention value (WRV) and the characteristic parameter of the fibrillation degree revealed that the ranking of factors affecting the fibrillation degree of fibers was NaOH concentration > homogeneous time > temperature > bath ratio, using the extreme difference analysis and variance analysis methods. The degree of fibrillation was influenced dominantly by NaOH concentration, rather than any other three factors. By means of BET test, the specific surface area of treated fiber showed a similar trend with WRV, and they matched well with fibril amount on the fibers observed by SEM.

scholarly journals Effect of Oxidized Wood Pulp Fibers on the Performance of the Thermoplastic Corn Starch Composites

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Peng Yin ◽  
Wen Zhou ◽  
Xin Dong ◽  
Bin Guo ◽  
Yanan Huang
Keyword(s):  
Corn Starch ◽  
Physical And Mechanical Properties ◽  
Thermoplastic Starch ◽  
Wood Pulp ◽  
Pulp Fiber ◽  
Pulp Fibers ◽  
Oxidation Degree ◽  
Water Contact ◽  
Elongation At Break ◽  
Wood Pulp Fiber

In this study, oxidized wood pulp fiber (OWPF) was prepared by oxidizing wood pulp fiber (WPF) with NaIO4, and OWPFs with different oxidation degrees were obtained and characterized by light microscope, XRD, and TG. Then, OWPFs with different oxidation degrees were incorporated into thermoplastic starch (TPS) to prepare OWPF/TPS composites. The cross-section morphology, water resistance, and physical and mechanical properties of the composites were investigated. SEM showed good dispersion of OWPF in the continuous TPS phase. The tensile strength of OWPF/TPS reached a maximum value of 5.02 MPa when the oxidation degree of OWPF was 0.5. Elongation at break of OWPF/TPS composites increased with the increasing oxidation degree of OWPF. Meanwhile, as a result of cross-linking, the water contact angle was also improved with the increased oxidation degree of OWPF. The study provided a new way to prepare a degradable TPS composite with satisfying properties to be used for packaging and catering.

Enhancement of cellulase catalysis of wood pulp fiber by cationic polyelectrolytes

2011 ◽  
Vol 35 (12) ◽  
pp. 4887-4891 ◽  
Author(s):  
John T. Reye ◽  
Jian Lu ◽  
Kendra E. Maxwell ◽  
Sujit Banerjee
Keyword(s):  
Wood Pulp ◽  
Pulp Fiber ◽  
Cationic Polyelectrolytes ◽  
Wood Pulp Fiber

scholarly journals Assessing wood pulp reactivity through its rheological behavior under dissolution

Cellulose ◽  
2019 ◽  
Vol 26 (18) ◽  
pp. 9877-9888
Author(s):  
Sara Ceccherini ◽  
Thad Maloney
Keyword(s):  
Molecular Weight ◽  
Water Retention ◽  
Wood Pulp ◽  
Degree Of Polymerization ◽  
Cellulose Dissolution ◽  
Water Retention Value ◽  
Cellulosic Fibers ◽  
Measurement Protocol ◽  
Convenient Approach ◽  
Viscose Process

Abstract Recent years have witnessed an increasing interest in man-made cellulosic fibers, whose production generally requires cellulose dissolution and regeneration. Cellulosic fibers are difficult to dissolve. Thus, the recalcitrance of wood pulp can be an estimate of its reactivity. Pulp reactivity is usually assessed via complex and time-consuming laboratory simulations of the viscose process. This study proposes a faster and more convenient approach. The dissolution-based torque reactivity (DTR) test measures the evolution of the rheological properties of a pulp suspension under dissolution in cupriethylenediamine. Reactivity is quantified in terms of initial dissolution rates (IDR) and dissolution times (DT). This study describes the measurement protocol for the DTR test and its application to some commercial pulps and a series of pulps hornified to different extents. The IDR and DT values were compared with other pulp features, including degree of polymerization, molecular weight distribution, specific surface area and water retention value. The DTR test proved to be reasonably precise and fast to carry out. Graphic abstract

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