| 张欣缘,张浩云,尹玉欣,朱智双,黄六莲,陈礼辉,李建国.热压法制备高强度纤维素膜及其性能研究[J].中国造纸学报,2025,40(3):172-178 |
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| 热压法制备高强度纤维素膜及其性能研究 |
| Preparation and Properties Research of High-strength Cellulose Membranes by Hot-pressing |
| 投稿时间：2025-03-05 修订日期：2025-03-27 |
| DOI：10.11981/j.issn.1000-6842.2025.03.172 |
| 中文关键词: 纤维素膜 热压 强度性能 氢键 |
| Key Words:cellulose film hot-pressing strength properties hydrogen bonds |
| 基金项目:国家重点研发计划课题（2023YFD2201904）；福建农林大学发展基金（KFB23145XA）；福建省大学生创新创业计划训练项目（FAFUXMPC20250422002-00083）。 |
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| 中文摘要: |
| 以溶解浆为原料，通过氯化1-烯丙基-3-甲基咪唑/二甲基亚砜（AMIMCI/DMSO）溶解再生，结合热压干燥手段制备纤维素膜，重点探究了热压工艺对纤维素膜强度性能的影响。结果表明，热压处理加强了纤维素膜中纤维素分子之间的相互作用，产生了更强的氢键结合，形成了更加紧密的氢键网络，进而大幅度提升纤维素膜的强度性能。在热压温度80 ℃和热压压力1 MPa的条件下，热压处理0.5 h，制得的纤维素膜具有高达210 MPa的拉伸强度及60.8 MJ/m3的韧性。此外，热压处理进一步强化了该纤维素膜的透光率和表面平滑性，其透光率高达92%，表面粗糙度降低至3 nm。 |
| Abstract: |
| Cellulose films were prepared through the regeneration combined with hot-pressing method using dissolving pulp as the raw material and 1-allyl-3-methylimidazolium chloride/dimethyl sulfoxide （AMIMCI/DMSO） as solvents， and the effects of the hot-pressing process on the strength properties of the cellulose films were primarily investigated. The results indicated that hot-pressing enhanced the inter-molecular bonding of cellulose in the films， generated stronger hydrogen bonds and established a denser hydrogen bond network， thereby significantly improved the strength properties of the cellulose films. Hot-pressing for 0.5 h under the conditions of temperature of 80 ℃ and pressure of 1 MPa， the prepared cellulose film achieved a tensile strength of up to 210 MPa with toughness of 60.8 MJ/m³. Moreover， hot-pressing treatment further improved the optical transmittance and surface smoothness of cellulose films， achieving a transmittance of 92% and a surface roughness as low as 3 nm. |
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