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| Physicochemical Characteristics of Secondary Starch from OCC Pulp |
| Received:July 31, 2019 |
| DOI：10.11981/j.issn.1000-6842.2020.01.47 |
| Key Words: |
| Fund Project:江苏省科技计划项目（BE2018129）；国家自然科学基金项目（31770417）。 |
| Author Name | Affiliation | Postcode | | LIN Lingrui | Jiangsu Provincial Key Laboratory of Pulp &
Paper Science and Technology, Nanjing Forestry University,Nanjing,Jiangsu Province,210037 | 210037 | | YANG Jie | Jiangsu Provincial Key Laboratory of Pulp &
Paper Science and Technology, Nanjing Forestry University,Nanjing,Jiangsu Province,210037 | 210037 | | QU Yifei | Jiangsu Provincial Key Laboratory of Pulp &
Paper Science and Technology, Nanjing Forestry University,Nanjing,Jiangsu Province,210037 | 210037 | | MENG Feng | Nine Dragons Paper (Taicang) Co., Ltd., Taicang,Jiangsu Province,215434 | 215434 | | YANG Wenheng | Nine Dragons Paper (Taicang) Co., Ltd., Taicang,Jiangsu Province,215434 | 215434 | | HAN Chong | Nine Dragons Paper (Taicang) Co., Ltd., Taicang,Jiangsu Province,215434 | 215434 | | YANG Yiqin | Jiangsu Provincial Key Laboratory of Pulp &
Paper Science and Technology, Nanjing Forestry University,Nanjing,Jiangsu Province,210037 | 210037 | | DAI Hongqi | Jiangsu Provincial Key Laboratory of Pulp &
Paper Science and Technology, Nanjing Forestry University,Nanjing,Jiangsu Province,210037 | 210037 |
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| Abstract: |
| The secondary starch in the simulant recycled OCC waste paper was obtained in a sequence of surface sizing with starch, drying and dissolving. The physicochemical characteristics of secondary starch from re-pulping of simulant OCC waste paper and its retention rate in papers after modification were evaluated. Results showed that the starch almost completely dissolved when the resolving conditions were temperature of 90℃, dissolving time of 30 min and rotate speed of 1500 r/min. The molecular weight of secondary starch decreased from 0.4×105 g/mol to 0.3×105 g/mol, and its thermal stability decreased, with the maximum thermal decomposition temperature decreasing from 316.5℃ to 303.6℃. The secondary starch after ionization modification by hydrogen peroxide was added in the wet-end section, results showed that the retention rate of secondary starch reached ~48% when the substitution degree (DS) is 0.15, and the strength properties of the paper were also enhanced. |
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