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| Effect of Wheat Straw Pulp Lignin Content on Enhancement Performance of Its MFC Product |
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| DOI：10.11981/j.issn.1000-6842.2017.01.21 |
| Key Words:microfibrillated cellulose (MFC); lignin; BCTMP; strengthening agent |
| Fund Project:本课题得到天津市自然科学基金重点项目（16JCZDJC37700）的资助。 |
| Author Name | Affiliation | | 李 菲1 | 1.天津科技大学天津市制浆造纸重点实验室，天津,300457 | | 李 群1，* | 1.天津科技大学天津市制浆造纸重点实验室，天津,300457 | | 王爱姣1 | 1.天津科技大学天津市制浆造纸重点实验室，天津,300457 | | 刘玮哲2 | 2.吉林晨鸣纸业有限责任公司，吉林省吉林市,132000 |
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| Abstract: |
| The wheat straw microfibrillated celluloses (MFCs) with different lignin contents were used as strengthening agents in BCTMP handsheets. The objective of this study was to investigate the impact of wheat straw pulp lignin content on its MFC enhancement of paper strength. The results showed that the lignin content of wheat straw pulp had a significant effect on its MFC enhancing performance. As the dosages of MFCs with lignin contents of 24.04%, 11.82% and 3.84% increased from 5% to 20%, the breaking length of the BCTMP handsheets were increased from 1.96, 2.56 and 2.53 km to 2.48, 4.17 and 4.61 km, respectively, indicating that the MFC prepared with low lignin content pulp could increase the paper strength prominently. The relationship between lignin content of wheat straw MFC and MFC properties was quantitatively analyzed by SEM, XPS and EDS technologies. The lignin of wheat straw pulp could inhibit the fibrillation of the pulp during MFC preparation and reduce the surface active hydroxyl group of MFC． |
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