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学者姓名：林珊
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Abstract ：
为寻找制备再生竹纤维素(RBC)膜合适的溶剂体系，本研究分别采用N-甲基吗啉-N-氧化物(NMMO)、1-丁基-3-甲基咪唑氯盐([BMIM]Cl)离子液体(ILs)、氢氧化钠/尿素(NaOH/urea)、二甲基乙酰胺/氯化锂(DMAc/LiCl)以及传统的铜乙二胺(CED)和二硫化碳/氢氧化钠(CS_2/NaOH)6种溶剂体系溶解竹纤维素(BC),通过温度可控平板刮膜实验装置，刮膜后利用相转换法制备RBC膜，研究膜的形貌结构、化学组成、结晶结构、热稳定性、力学性能和透光性能。结果表明，所有膜的化学组成类似于竹纤维素，结晶结构为纤维素Ⅱ型，结晶度低于竹纤维素。NMMO、ILs和NaOH/urea膜的热稳定性最高; NMMO、ILs、Na OH/urea和DMAc/Li Cl膜的拉伸强度均较高; Na OH/urea和ILs膜的透光率最高;CS_2/Na OH膜的热稳定性、拉伸强度和透光率均最低。NMMO、ILs和Na OH/urea溶剂体系在满足再生竹纤维素膜市场和环境要求方面具有巨大潜力。
Keyword ：
再生竹纤维素膜 再生竹纤维素膜 力学性能 力学性能 拉伸强度 拉伸强度 溶剂 溶剂 热稳定性 热稳定性 透光率 透光率
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| GB/T 7714 | 林珊 , 程雨桐 , 汪东 et al. 不同溶剂体系制备再生竹纤维素膜及其性能 [J]. | 森林与环境学报 , 2023 , 43 (06) : 666-672 . |
| MLA | 林珊 et al. "不同溶剂体系制备再生竹纤维素膜及其性能" . | 森林与环境学报 43 . 06 (2023) : 666-672 . |
| APA | 林珊 , 程雨桐 , 汪东 , 李建国 , 黄六莲 , 陈礼辉 . 不同溶剂体系制备再生竹纤维素膜及其性能 . | 森林与环境学报 , 2023 , 43 (06) , 666-672 . |
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Cellulose and its derivatives have received much attention as green raw materials to prepare ultrafiltration membranes. However, the inferior performance (low rejection, poor anti-fouling etc.) hinders their development. To improve the preparation of cellulose based ultrafiltration membrane and its performance, in this study, we developed a facile strategy to fabricate cellulose acetate ultrafiltration membranes by adding methyl acetate (MAC, as a co-solvent) to N, N-dimethylacetamide (DMAc). The results show that the pore morphologies of the membrane can be regulated by adjusting the DMAc to MAC ratio. Under optimal conditions, the pure water flux can reach 188.0 L/m2h, with the BSA rejection ratio of 95.2 %, which is about 20 % higher than the control. Furthermore, the anti-fouling and long-term stability of ultrafiltration membranes have improved significantly. The above results support the conclusion that using a mixed solvent by adding MAC to DMAc is effective for tuning the pore structure of cellulose-based ultrafiltration membrane, hence, improving its performance for water purification.
Keyword ：
Cellulose acetate Cellulose acetate Cellulose-based materials Cellulose-based materials Methyl acetate Methyl acetate Phase inversion Phase inversion Solvent mixture Solvent mixture Ultrafiltration membrane Ultrafiltration membrane
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| GB/T 7714 | Lin, Junkang , Fu, Chenglong , Zeng, Wenchao et al. Regulating the structure of cellulose-based ultrafiltration membrane to improve its performance for water purification [J]. | INDUSTRIAL CROPS AND PRODUCTS , 2023 , 192 . |
| MLA | Lin, Junkang et al. "Regulating the structure of cellulose-based ultrafiltration membrane to improve its performance for water purification" . | INDUSTRIAL CROPS AND PRODUCTS 192 (2023) . |
| APA | Lin, Junkang , Fu, Chenglong , Zeng, Wenchao , Wang, Dong , Huang, Fang , Lin, Shan et al. Regulating the structure of cellulose-based ultrafiltration membrane to improve its performance for water purification . | INDUSTRIAL CROPS AND PRODUCTS , 2023 , 192 . |
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本发明公开一种高通量纤维素正渗透膜的制备方法，涉及膜分离和海水淡化技术领域。本发明的制备方法包括以下步骤：1)将纤维素溶解在溶剂中，采用相转化法制备纤维素膜；2)利用纤维素酶对纤维素膜进行单面蚀刻处理获得具有非对称结构的纤维素正渗透膜。本研究发明的纤维素正渗透膜具有不对称的孔结构，呈现优异的水通量和盐截留率，且制备工艺简单，环境友好，可大规模生产。
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| GB/T 7714 | 陈礼辉 , 袁红梅 , 李建国 et al. 一种高通量纤维素正渗透膜的制备方法 : CN202210721144.0[P]. | 2022-06-24 . |
| MLA | 陈礼辉 et al. "一种高通量纤维素正渗透膜的制备方法" : CN202210721144.0. | 2022-06-24 . |
| APA | 陈礼辉 , 袁红梅 , 李建国 , 林珊 . 一种高通量纤维素正渗透膜的制备方法 : CN202210721144.0. | 2022-06-24 . |
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Membranes are the dominant material for seawater desalination and clean-water harvesting, which are commonly composed of synthetic polymers, showing low hydrophilicity and environmental hazard. Herein, we developed a low-cost, intrinsically green, superhigh-water flux Janus cellulose membrane (CEM) via a facile cellulase etching strategy. Coating cellulase on the single surface of cellulose membrane (such as top surface), triggers effective etching on its top section rather than bottom section, which architects an asymmetric-pore structure of the Janus CEM including porous top-and dense bottom-layer. Such distinction endows the Janus CEM with an unprecedented high-water flux of 135.75 LMH and a low salt-water ratio of 0.29 gmiddotL(-1) for 1 M NaCl solution, which is 17-time higher and 62-time lower than that of the pristine CEM. Our Janus CEM enables a promising participant for the advanced membrane materials toward versatile separation engineering.
Keyword ：
Cellulase etching Cellulase etching Forward osmosis Forward osmosis Membrane separation Membrane separation Natural cellulose Natural cellulose
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| GB/T 7714 | Yuan, Hongmei , Hao, Ran , Sun, Haodong et al. Engineered Janus cellulose membrane with the asymmetric-pore structure for the superhigh-water flux desalination [J]. | CARBOHYDRATE POLYMERS , 2022 , 291 . |
| MLA | Yuan, Hongmei et al. "Engineered Janus cellulose membrane with the asymmetric-pore structure for the superhigh-water flux desalination" . | CARBOHYDRATE POLYMERS 291 (2022) . |
| APA | Yuan, Hongmei , Hao, Ran , Sun, Haodong , Zeng, Wenchao , Lin, Junkang , Lu, Shengchang et al. Engineered Janus cellulose membrane with the asymmetric-pore structure for the superhigh-water flux desalination . | CARBOHYDRATE POLYMERS , 2022 , 291 . |
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Forward osmosis (FO) technology exhibits great potential in seawater desalination and wastewater treatment due to its negligible energy consumption and high antifouling, however, the weak desalination capability, especially low water flux, remains challenging. Herein, a cost-effective and high-desalination-performance chitosan (CS)-based FO membrane is developed via coupling the electrospinning CS nanofibers and interfacial-polymerized polyamide (PA). The electrospun nanofibers construct the porous and hydrophilic CS layer with the large pore-diameter of similar to 274 nm and low thickness of-10 mu m, enabling the effective transport of water molecules, specifically, a superhigh water flux of 107.53 LMH at a low salt-water ratio of 0.24 g center dot L-1. In addition, such superior desalination performance of the as-prepared FO membrane is universal for the various salt species and concentrations. Our CS nanofiber-based membrane with the high separation capability of water-salt, desirable antibacterial activity, as well as the low cost, offers a roadmap toward the sustainable membrane materials.
Keyword ：
Chitosan nanofiber Chitosan nanofiber Forward osmosis Forward osmosis High-water flux High-water flux
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| GB/T 7714 | Zeng, Wenchao , Yu, Meiqiong , Lin, Junkang et al. Electrospun chitosan nanofiber constructing superhigh-water-flux forward osmosis membrane [J]. | INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES , 2022 , 226 : 833-839 . |
| MLA | Zeng, Wenchao et al. "Electrospun chitosan nanofiber constructing superhigh-water-flux forward osmosis membrane" . | INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES 226 (2022) : 833-839 . |
| APA | Zeng, Wenchao , Yu, Meiqiong , Lin, Junkang , Huang, Liulian , Li, Jianguo , Lin, Shan et al. Electrospun chitosan nanofiber constructing superhigh-water-flux forward osmosis membrane . | INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES , 2022 , 226 , 833-839 . |
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采用N-甲基吗啉-N-氧化物(NMMO)为溶剂溶解竹纤维素,通过干-湿纺法制备再生竹纤维素中空纤维膜,并采用其构建的中试膜系统对饮用水进行深度处理。结果表明,中空纤维膜的结晶结构为纤维素Ⅱ型,结晶度比竹纤维素低,化学组成与竹纤维素没有明显差异。中空纤维膜热稳定性和力学性能良好,初始热分解温度为329.8℃,拉伸强度达(62.6±6.1) MPa。饮用水处理(运行90天)后,溶解性总固体(TDS)值由574 mg/L降为154 mg/L,细菌总数由35～40 cfu/mL降为20～25 cfu/mL,出水口感好,生物安全性高。
Keyword ：
NMMO NMMO 中空纤维 中空纤维 竹纤维素 竹纤维素 膜 膜
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| GB/T 7714 | 林珊 , 李诗 , 汪东 et al. 再生竹纤维素中空纤维膜的制备及性能 [J]. | 中国造纸 , 2022 , 41 (09) : 19-25 . |
| MLA | 林珊 et al. "再生竹纤维素中空纤维膜的制备及性能" . | 中国造纸 41 . 09 (2022) : 19-25 . |
| APA | 林珊 , 李诗 , 汪东 , 袁红梅 , 黄六莲 , 陈礼辉 . 再生竹纤维素中空纤维膜的制备及性能 . | 中国造纸 , 2022 , 41 (09) , 19-25 . |
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本文简要介绍了含油废水的特点和特殊浸润性膜材料的基础理论，总结了不同特殊浸润性有机膜和无机膜材料在油水分离中的应用，并对特殊浸润性膜材料的后续研究方向做出展望。
Keyword ：
油水分离 油水分离 特殊浸润 特殊浸润 膜 膜
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| GB/T 7714 | 石正宝 , 陈淑卿 , 林珊 . 特殊浸润性膜材料的油水分离研究进展 [J]. | 化学工程与装备 , 2022 , (11) : 248-250,254 . |
| MLA | 石正宝 et al. "特殊浸润性膜材料的油水分离研究进展" . | 化学工程与装备 11 (2022) : 248-250,254 . |
| APA | 石正宝 , 陈淑卿 , 林珊 . 特殊浸润性膜材料的油水分离研究进展 . | 化学工程与装备 , 2022 , (11) , 248-250,254 . |
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Bamboo dissolving pulp (BP)/chitosan (CS) blend solutions were obtained by adding different weight ratios of BP and CS particles to N-methylmorpholine-N-oxide (NMMO) solvent. The processing and membrane forming performances of the blend solutions were studied using a rotating rheometer. The BP/CS blend solutions' optimal processing temperature was 50 to 70 degrees C. When the CS weight ratio was 9.09 wt%, the viscosity of the solution decreased, which was conducive to the processing of the membrane. The BP/CS blend ultrafiltration membranes were prepared by phase transformation of the blend solutions. The results showed that the rejection rate of the BP/CS blend ultrafiltration membrane with physically added CS particles was greatly improved compared with that of the regenerated BP ultrafiltration membrane.
Keyword ：
Bamboo dissolving pulp Bamboo dissolving pulp Chitosan Chitosan Rejection rate Rejection rate Rheological properties Rheological properties Ultrafiltration membrane Ultrafiltration membrane
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| GB/T 7714 | Yuan, Hongmei , Wu, Jianfei , Lin, Junkang et al. Effect of Chitosan on Membrane Formation and Processability of Bamboo Dissolving Pulp Based Ultrafiltration Membrane [J]. | BIORESOURCES , 2021 , 16 (3) : 4752-4768 . |
| MLA | Yuan, Hongmei et al. "Effect of Chitosan on Membrane Formation and Processability of Bamboo Dissolving Pulp Based Ultrafiltration Membrane" . | BIORESOURCES 16 . 3 (2021) : 4752-4768 . |
| APA | Yuan, Hongmei , Wu, Jianfei , Lin, Junkang , Huang, Liulian , Chen, Lihui , Lin, Shan . Effect of Chitosan on Membrane Formation and Processability of Bamboo Dissolving Pulp Based Ultrafiltration Membrane . | BIORESOURCES , 2021 , 16 (3) , 4752-4768 . |
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Regenerated cellulose (RC) films have numerous separation and purification applications. However, the mechanical properties of RC films are poor. Because of their very similar chemical structures and excellent compatibility, chitosan (CS) particles were chosen to reinforce bamboo-derived dissolving pulp (BP)-based films. BP/CS blend solutions were obtained by mixing BP and CS particles at different weight percentages into Nmethyl-morpholine-N-oxide (NMMO) solvent. The BP/CS composite films prepared by the traditional phase transformation method formed a physically cross-linked network with high packing density for the water evaporation after air-drying. Due to the strong hydrogen bonding between CS and BP revealed by rheological properties and Fourier transform infrared (FTIR) data, the CS particles dispersed uniformly in the matrix, and the compatibility of the reinforcement with the matrix was excellent, which was further confirmed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV-vis transmittance data. As the weight percentage of CS increased from 9.09 wt% to 14.24 wt%, the crystallinity of cellulose II increased from 32.20%-38.59%, and the tensile strength of the BP/CS composite films increased from 662.20 MPa to 865.53 MPa, respectively. These results indicate that the tensile strength of the BP/CS composite films was increased by nearly 250.83 %-358.56 % compared with that of the regenerated BP film (188.75 MPa). Moreover, the elongation at break was increased by 51.16 %-41.63 %. These findings provide a new way to prepare ultra-high-strength RC composite films.
Keyword ：
Bamboo-derived dissolving pulp Bamboo-derived dissolving pulp Chitosan Chitosan Composite film Composite film Ultra-high-strength Ultra-high-strength
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| GB/T 7714 | Yuan, Hongmei , Wu, Jianfei , Wang, Dong et al. Ultra-high-strength composite films prepared from NMMO solutions of bamboo-derived dissolving pulp and chitosan [J]. | INDUSTRIAL CROPS AND PRODUCTS , 2021 , 170 . |
| MLA | Yuan, Hongmei et al. "Ultra-high-strength composite films prepared from NMMO solutions of bamboo-derived dissolving pulp and chitosan" . | INDUSTRIAL CROPS AND PRODUCTS 170 (2021) . |
| APA | Yuan, Hongmei , Wu, Jianfei , Wang, Dong , Huang, Liulian , Chen, Lihui , Lin, Shan . Ultra-high-strength composite films prepared from NMMO solutions of bamboo-derived dissolving pulp and chitosan . | INDUSTRIAL CROPS AND PRODUCTS , 2021 , 170 . |
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The rapid development of artificial skin, flexible sensors, and soft robotics proposes more requirements on conductive hydrogels, which should integrate more functions. However, it remains a great challenge to develop an integrated conductive hydrogel combining multiple sensations and self-powered properties. Herein, we develop a conductive MXene-cellulose nanocrystals (CNCs)-tamarind gum (TG)-polyacrylamide (PAM) hydrogel containing conductive ions by a facile fabrication process. A unique double network structure in the composite hydrogel was assembled by employing TG with an ionically cross-linked network and PAM with a UV photoinitiated cross-linked network, which imparted this hydrogel with toughness (38.8 KJ/m2) and high stretchability (2000% strain). The hydrogel also possessed high sensitivity (gauge factor = 5.23, 248% strain) due to the introduction of MXene and mobile ions, thus exhibiting multiple sensations towards pressure, strain, humidity, and temperature. More importantly, the hydrogel is self-powered and can generate an open-circuit-voltage of up to 164 mV from moisture flow in a very short time (18 s). We believe that the hydrogel not only shows great potential applications in artificial skin, flexible sensors, and soft robotics, but also contributes to the development of next-generation artificial intelligence.
Keyword ：
Conductive hydrogel Conductive hydrogel Generator Generator Multiple sensations Multiple sensations Sensor Sensor
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| GB/T 7714 | He, Peng , Guo, Runsheng , Hu, Kui et al. Tough and super-stretchable conductive double network hydrogels with multiple sensations and moisture-electric generation [J]. | CHEMICAL ENGINEERING JOURNAL , 2021 , 414 . |
| MLA | He, Peng et al. "Tough and super-stretchable conductive double network hydrogels with multiple sensations and moisture-electric generation" . | CHEMICAL ENGINEERING JOURNAL 414 (2021) . |
| APA | He, Peng , Guo, Runsheng , Hu, Kui , Liu, Kai , Lin, Shan , Wu, Hui et al. Tough and super-stretchable conductive double network hydrogels with multiple sensations and moisture-electric generation . | CHEMICAL ENGINEERING JOURNAL , 2021 , 414 . |
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