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| Improving the Strength and Hydrophobicity of Fiber Material by Polyethyleneimine Modified KH560 |
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| DOI：10.11981/j.issn.1000-6842.2019.01.15 |
| Key Words:PEI; KH560; tensile strength; hydrophobicity; wet tensile strength |
| Fund Project:江苏省科技计划重大项目(BE2018129)；国家自然科学基金(No.31770417)；江苏省研究生培养创新工程项目(No.KYCX17_0837)。 |
| Author Name | Affiliation | | NI Shuzhen | Jiangsu Provincial Key Lab of Pulp and Paper Science, Nanjing Forestry University, Nanjing, Jiangsu Province, 210037 | | WANG Chunjian | Jiangsu Provincial Key Lab of Pulp and Paper Science, Nanjing Forestry University, Nanjing, Jiangsu Province, 210037 | | LIN Lingrui | Jiangsu Provincial Key Lab of Pulp and Paper Science, Nanjing Forestry University, Nanjing, Jiangsu Province, 210037 | | LIU Zhulan | Jiangsu Provincial Key Lab of Pulp and Paper Science, Nanjing Forestry University, Nanjing, Jiangsu Province, 210037 | | WU Weibing | Jiangsu Provincial Key Lab of Pulp and Paper Science, Nanjing Forestry University, Nanjing, Jiangsu Province, 210037 | | DAI Hongqi* | Jiangsu Provincial Key Lab of Pulp and Paper Science, Nanjing Forestry University, Nanjing, Jiangsu Province, 210037 |
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| Abstract: |
| A novel surface sizing agent PEI-KH560 was prepared through a simple reaction using polyethyleneimine (PEI) and KH560.The physical properties and hydrophobicity of the dried handsheet were determined after impregnating in PEI-KH560.The results showed that when the dosage of PEI-KH560 was 1.35%, the dry tensile index and wet tensile index of handsheet increased by 33.9% and 61.8%, respectively.The surface of the handsheet changed into hydrophobic surface from high hydrophilic surface, and the surface contact angle increased from 53.4° to 69.8°, the Cobb60 value decreased by 24.3%. It is indicated that PEI-KH560 enhanced the bonding strength between fibers, and played a positive role in improving the strength and hydrophobicity of the paper. |
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