| 引用本文: | 崔巍巍,穆金龙,刘立柱,殷艳珍,翁凌,胥焕岩,景显彤.麦饭石/聚乳酸纤维膜的制备及其空气过滤性能[J].材料科学与工艺,2018,26(6):1-8.DOI:10.11951/j.issn.1005-0299.20170391. |
| CUI Weiwei,MU Jinlong,LIU Lizhu,YIN Yanzhen,WENG Ling,XU Huanyan,JING Xiantong.Preparation and air filtration performance of medical stone/poly-L-lactide fiber membranes[J].Materials Science and Technology,2018,26(6):1-8.DOI:10.11951/j.issn.1005-0299.20170391. |
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| 麦饭石/聚乳酸纤维膜的制备及其空气过滤性能 |
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崔巍巍1,穆金龙1,刘立柱1,殷艳珍2, 翁凌1,胥焕岩1,景显彤1
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(1.哈尔滨理工大学 材料科学与工程学院,哈尔滨 150040; 2.齐齐哈尔市碾子山区科技信息局,黑龙江 齐齐哈尔 161000)
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| 摘要: |
| 为解决当前过滤材料过滤效率低，对空气中悬浮颗粒不能进行有效过滤，并因其不可降解而造成对环境的二次污染问题。本文以左旋聚乳酸(PLLA)为原料，加载天然麦饭石颗粒，通过静电纺丝法制备了可降解的麦饭石/PLLA复合纤维薄膜.利用场发射扫描电镜(FE-SEM)、红外光谱(FTIR)、介电常数测试，过滤性能测试、热失重分析(TGA)对麦饭石/PLLA复合纤维膜微观结构及其对空气中悬浮微粒的过滤性能进行了表征测试.结果表明：复合纤维膜的纤维表面呈扁平状，中间塌陷成沟，并且隔一段距离出现类似竹节状的“结节”，纤维平均直径为644 nm.经测定，复合纤维薄膜的介电常数为3.02，明显高于一次性医用口罩.复合纤维膜对粒径≥1 μm、≥ 2.5 μm、≥10 μm的悬浮颗粒平均过滤效率分别为88.94%、95.41%、96.18%，过滤初阻力稳定维持在35~39 Pa.TGA定量分析表明复合纤维膜对烟气总吸附率大于31.2%，对比医用一次性口罩，复合纤维膜过滤效率明显增强.
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| 关键词: 聚乳酸 麦饭石 静电纺丝 复合材料 过滤性能 |
| DOI：10.11951/j.issn.1005-0299.20170391 |
| 分类号:TB340.64 |
| 文献标识码:A |
| 基金项目:黑龙江省青年科学基金项目(QC2014C051); 国家自然科学基金委员会青年科学基金项目(51603057) |
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| Preparation and air filtration performance of medical stone/poly-L-lactide fiber membranes |
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CUI Weiwei1, MU Jinlong1, LIU Lizhu1, YIN Yanzhen2, WENG Ling1, XU Huanyan1, JING Xiantong1
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(1.College of Material Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China; 2.Qiqihar Nianzishan District Science and Technology Information Bureau, Qiqihar 161000, China)
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| Abstract: |
| Current filter materials have low filteration efficiency that can not effectively filter the suspended particles in the air and may cause secondary pollution to the environment due to its non-degradabitity. To solwe the problem, a degradable medical stone/poly-L-lactide(PLLA) composite fiber membrane was prepared by electrospinning method through adopting poly-L-lactide and natural medical stone particles as raw materials. Field emission scanning electron microscope(FE-SEM), Fourier transform infrared spectroscopy(FTIR), dielectric constant test, filtration performance test, and thermogravimetric analysis(TGA) were used to characterize the microstructure of the composite fiber membrane and its filtration performance. The results showed that the fiber surface was flat with the middle of the fiber collapsed into a ditch, bamboo-like "nodules" were observed separated by a distance, and the average fiber diameter was 644 nm. The dielectric constant of the composite membrane was 3.02, which was significantly higher than that of the disposable medical mask. The average filtration efficiency of the composite membranes was 88.94%, 95.41%, and 96.18% for the suspended particles with diameters≥1 μm, ≥2.5 μm, ≥10 μm, respectively. The initial filtration resistance remained stable at 35~39 Pa. The TGA results showed that the flue gas adsorption rate of the composite membrane was above 31.2%. The filtration efficiency of the composite fiber membrane was significantly higher than that of disposable medical masks.
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| Key words: PLLA medical stone electrospinning composite material filtration performance |
