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| Impact of Fiber Fractionation on the Yielding Properties of Bleached Spruce Pulp Fiber Suspensions |
| Received:December 16, 2019 |
| DOI：10.11981/j.issn.1000-6842.2020.03.21 |
| Key Words:fiber suspension;gel crowding number;yield stress |
| Fund Project:国家自然科学基金资助项目（31660182）；广西自然科学基金项目(2017GXNSFBA198217,2019GXNSFAA185010)。 |
| Author Name | Affiliation | Postcode | | WANG Can | Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control， College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 | 530004 | | LI Jinlong | Zhejiang Guanhao Functional Materials Co.， Ltd.， Jiaxing， Zhejiang Province， 314200 | 314200 | | WANG Qi | Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control， College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 | 530004 | | SHAO Yuzheng | Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control， College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 | 530004 | | SHA Jiulong | Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control， College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 | 530004 | | WANG Shuangfei | Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control， College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 | 530004 |
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| Abstract: |
| In order to study the influence of fiber fractionation on the yield stress of bleached spruce pulp fiber suspensions， the compressive and shear yield stresses of fiber suspension were measured by sedimentation and rheological methods， and their coupling correlation was also analyzed. The results showed that the gel crowding number of pulp samples before and after fractionated ranged from 26.1 to 37.8， and increased approximately linear with the fiber aspect ratio. Compressive and shear yield stresses of all suspensions of fiber fractionations increased exponentially as increasing of the crowding number. Moreover， Froude number decreased gradually with increasing crowding number， and finally approached a stable value. |
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