基于聚丙烯腈(PAN)静电纺纳米纤维的醋酸纤维素(CA)复合(精)

木浆纤维素/聚丙烯腈/硝酸银抗菌纤维的制备及性能宋俊，邵程浩，李君炜，石宇飞（天津工业大学材料科学与工程学院，天津300387）摘要：为了拓展抗菌纳米纤维在医疗敷料领域的应用，首先采用N ，N-二甲基乙酰胺（DMAc ）/氯化锂（LiCl ）溶剂体系来溶解木浆纤维素和聚丙烯腈（PAN ），并加入硝酸银（AgNO 3）作为抗菌剂，制备了纤维素/PAN/AgNO 3（DMAc/LiCl ）纺丝溶液，通过静电纺丝技术纺制出抗菌纳米纤维，并对纤维的形貌、元素组成、结晶性、化学结构、热性能及抗菌性能进行了表征分析。

结果表明：当AgNO 3的质量分数（即占纺丝液中溶质总质量的百分比）为2%时，纤维素/PAN/AgNO 3纤维的微观形貌最佳；在纤维表面均匀分布的抑菌组分主要为AgCl ；抗菌纤维对大肠杆菌和金黄色葡萄球菌均具有很好的抑制作用，抑菌率都达到了98%以上。

关键词：木浆纤维素；聚丙烯腈（PAN ）；硝酸银；抗菌纤维；静电纺丝；抗菌性能；抑菌率中图分类号：TS102.5；TQ342.8文献标志码：A文章编号：员远苑员原园圆源载（圆园23）园5原园园01原06收稿日期：2022-06-02基金项目：国家重点基础研究发展计划资助项目（2014CB660813）通信作者：宋俊（1978—），男，博士，教授，主要研究方向为生态环境纤维材料和功能纤维材料。

E-mail ：****************Preparation and properties of wood pulp cellulose/polyacrylonitrile/AgNO 3antibacterial fibersSONG Jun ，SHAO Chenghao ，LI Junwei ，SHI Yufei（School of Material Science and Engineering ，Tiangong University ，Tianjin 300387，China ）Abstract ：In order to expand the application of antibacterial nanofibers in the field of medical dressings袁the DMAc/LiClsolvent system was used to dissolve the wood pulp cellulose and polyacrylonitrile渊PAN冤袁and silver nitrate 渊AgNO 3冤was added as the antibacterial agent to prepare cellulose/PAN/AgNO 3渊DMAc/LiCl冤spinning solution.Then袁the antibacterial fibers were spun by electrospinning technology袁and the morphology袁element composi鄄tion袁crystallinity袁chemical structure袁thermal properties and antibacterial properties of the fibers were ana鄄lyzed.The results show that when the mass fraction of AgNO 3渊i.e.the percentage of total solute mass in the spin鄄ning solution冤is 2%袁the microscopic morphology of cellulose/PAN/AgNO 3fiber is the best曰the antibacterial component evenly distributed on the fiber surface is mainly AgCl曰the antibacterial fiber had a good inhibitory ef鄄fect on Escherichia coli and Staphylococcus aureus 袁and the antibacterial rate reached more than 98%.Key words ：wood pulp cellulose曰polyacrylonitrile 渊PAN冤曰AgNO 3曰antibacterial fibers曰electrospinning曰antibacterialproperty曰antibacterial rate随着生活节奏的不断加快，人们不得不使用更短的时间来治疗伤口，传统的纱布类敷料制备方法简单，价格便宜，在皮肤创伤中有着广泛的应用，但其无法保持伤口湿润，并且容易发生细菌交叉感染[1-2]，因而需要对医用敷料作进一步的探索研究。

静电纺丝制备纳米纤维的研究进展鲍桂磊;张军平;赵雯;朱娟娟;王改娥【摘要】Due to tiny diameter, big specific surface area, and the ability to achieve surface functionalization easily, nanofibers are attracting great attention, and electrospinning technology is considered to be the most simplest and effective way to prepare polymer nanofibers, many researchers at home and abroad have studied the electrospinning technology in detail. In this paper, the working principle of electrospinning was introduced briefly, and influential factors on the electrospinning process were analyzed, such as solvent, consistency and viscosity, conductance, applied voltage, flow rate and distence between the gaps. In addition, application of electrospun nanofibers in the fields of filter media material, sensors and biomedical engineering was described, and some problems of this technique were pointed out as well as countermeasures.%纳米纤维具有直径小、比表面积大和易于实现表面功能化等优点，受到了广泛的关注，而静电纺丝技术被认为是制备聚合物纳米纤维最简单有效的方法，因此国内外学者对静电纺丝技术进行了详细的研究。

Studies in Synthetic Chemistry 合成化学研究, 2018, 6(3), 49-54Published Online September in Hans. /journal/sschttps:///10.12677/ssc.2018.63008Preparation and Research ofPolyacrylonitrile Nanofiber MembraneXiaoxiang Zhang1,2, Peng Wei1, Xin Huang1, Ruopu Bian1, Yangliu Wang1, Xiao Han11Textile School, Zhongyuan University of Technology, Zhengzhou Henan2Henan Collaborative Innovation Center for Textile and Clothing Industry, Zhengzhou HenanReceived: Oct. 9th, 2018; accepted: Oct. 23rd, 2018; published: Oct. 30th, 2018AbstractAs domestic national economy growing for several years, the environmental pollution is getting worse and worse, especially in northern areas of the country. For several years, with the growing trend of traditional products, prevent mist haze travel masks, indoor air filter, curtain, in recent years in north China regional sales market has been bullish. The survey found that these tradi-tional products have shortcomings of preventing mist haze filter with narrow particle size range, low efficiency and poor mechanical properties. Based on the above shortcoming, this study mainly uses the electrostatic spinning technique [1], taking the first with polyacrylonitrile (PAN) as raw material, N-N dimethylamide (DMF) as the solvent (1:9). By blending appropriate amount of modi-fied graphene, PAN fiber films of different concentrations were prepared by adjusting process pa-rameters, and a kind of filter fabric used for filtering air with wide particle size range, high filtra-tion efficiency and certain mechanical strength was developed [2] [3]. When the weight of fiber membrane is about 250 g/m2 and the air flow is 30 L/min, the filtration efficiency of sodium chlo-ride and oily aerosol particles within the size range of 300 - 500 nm reaches 99.89 and 99.88, and the drag pressure drop was only 115 and 117 Pa.KeywordsElectrostatic Spinning, Graphene, Polyacrylonitrile聚丙烯腈纳米纤维膜的制备及研究张小祥1,2，魏朋1，黄鑫1，边若普1，王杨柳1，韩笑11中原工学院纺织学院，河南郑州2纺织服装产业河南省协同创新中心，河南郑州收稿日期：2018年10月9日；录用日期：2018年10月23日；发布日期：2018年10月30日张小祥 等摘要随着国内国民经济连续几年不断增长，由此引发的环境污染不容忽视，尤其是在国内北方地区雾霾天气连续几年有持续加重趋势，传统的防雾霾产品，出行口罩，室内空气过滤器、窗帘，近几年在我国北方地区销售行情一直看好，调查发现这些传统防雾霾产品存在过滤空气中颗粒粒径范围窄、过滤效率低、力学性能差等缺点，本研究基于以上缺点，主要采用静电纺丝技术[1]，首先以聚丙烯腈(PAN)为原料，N-N 二甲基甲酰胺(DMF)为溶剂(1:9)，混合适量改性石墨烯通过调整工艺参数制备出了不同浓度的PAN 纤维膜，开发出一种过滤空气中颗粒粒径范围较广、过滤效率较高、具有一定力学强度的过滤布用纤维[2] [3]。

静电纺丝实验插层复合静电纺丝溶液的制备及其基本性质的研究按比例准确称取一定质量的O-MMT,在20 mL的DMF中超声分散3 h,然后加入 3 g 聚丙烯腈粉末,搅拌24 h 后待用。

本实验中,O-MMT 的加入量占PAN/O-MMT 复合材料总质量的0 wt.%、1 wt.%、3 wt.%及5 wt.%,用PAN PAN/O-MMT-1、PAN/O-MMT-3 及PAN/O-MMT-5 分别表示。

原料O-MMT、PAN 固体粉末使用前在50 oC温度下干燥处理12小时后使用。

对含有不同比例O-MMT 的PAN/O-MMT 复合静电纺丝液的基本性质（粘度、电导率、表面张力）进行测试。

纺丝液的粘度采用旋转式粘度计（NDJ-79进行测试,表面张力的测试则是通过QBZY-1 型全自动表面张力仪测试得到的,电导率的测试是利用DDS-11A 型数显电导率仪测试得到的。

静电纺丝法制备插层复合纳米纤维将已配置好的纺丝液倒入带针头的标准容量为20 mL 注射器,在针头加上正电势,用被铝箔覆盖的滚筒作为接收装置，纺丝工艺为：纺丝电压15 kV推进速度mL/h,收集距离15 cm。

纺丝结束后，收集铝箔上的纳米纤维，在室温下存放，待残留溶剂挥发。

1 。

1 复合材料的制备选用分子量为90000的PAN粉末和平均粒径为35nm的硅粉为主要原料.先将PAN粉末加入二甲基甲酰胺DMF溶剂中形成质量分数为12%的高分子聚合物溶液再按质量比mSi：mPAN =1：6.5加入硅粉形成悬浊液.上述液体在室温下搅拌12h后超声分散30min 形成均一稳定的前驱体溶液.将前驱体溶液置于15mL注射器中针头孔径0. 6mm通过推进泵控制移动速度进行静电纺丝.纺丝电压为17kV 接收板为22 m铝箔接收距离为2 1.5cm •所得纺丝前驱体在2 9 0 C预氧化lh后置于通有氩气保护的管式炉中烧结烧结温度为6 0 0°C 烧结时间为5h.为了进行对比分析本文采用相同的静电纺丝工艺制备了PAN原丝. 先将PAN 粉末加入DMF溶剂中形成质量分数为12%的高分子聚合物溶液该溶液未加硅粉其静电纺丝过程前驱体预氧化过程和烧结过程的参数与上述S1C复合材料制备参数一致.2. 3. 3. 1 SiOz纳米粒子表面固定ATRP引发剂使用前的Si02粒子经150"C真空干燥24小时，氮气保护的冰水浴四孔烧瓶中加入2. Og纳米Si02粒子，3. 09(9. 5mm01)4 —苄基三氯硅烷和20ml无水四氢呋喃(使用前经金属钠回流 6 小时)，磁力搅拌后，溶于5. Oral 四氢呋喃的三乙胺1. 2ml(8. 6 mm01)缓慢地滴加入上述体系，滴加完毕后O'C放置24,时，撤去冰水浴窒温反应244,时。

化工进展Chemical Industry and Engineering Progress2022年第41卷第5期聚丙烯腈/聚酯无纺布微孔复合锂电隔膜的制备及性能段曼华，程丹，肖伟，杨占旭（辽宁石油化工大学石油化工学院，辽宁抚顺113001）摘要：为了改善锂电隔膜的耐热性、电解液亲和性和机械性能，本文以聚丙烯腈为主要材料，采用相转化法制备了聚酯无纺布支撑的聚丙烯腈微孔复合锂电隔膜，对隔膜的理化性能（孔道结构、机械性能、电解液性能和耐热性）和电池性能（循环性能、倍率性能）进行系统研究。

结果表明，复合隔膜具有均匀的微孔结构，平均孔径约为425nm ，孔隙率为74%，拉伸强度为30MPa ；电解液亲和性良好，吸液率为385%，接触角接近0°，锂离子电导率较市售隔膜显著提高，达到1.65mS/cm ；在150℃、0.5h 的热处理条件下，复合隔膜的热收缩率为0。

鉴于良好的理化特性，该隔膜所装配的钴酸锂/锂金属电池表现出优异的循环容量和倍率容量保持性，如在0.2C 倍率下，经历200次循环后电池的放电容量保持率为95.2%，在10C 倍率下电池的放电容量为0.5C 倍率下的58.3%。

因此，相转化法制备的聚丙烯腈基微孔复合隔膜在锂离子电池中显示出较好的应用前景。

关键词：锂离子电池；隔膜；相转化法；微孔结构；放电性能中图分类号：TB332;TQ340.64文献标志码：A文章编号：1000-6613（2022）05-2615-08Preparation and performance of polyacrylonitrile/polyester nowovenmicroporous composite separator for lithium-ion batteriesDUAN Manhua ，CHENG Dan ，XIAO Wei ，YANG Zhanxu(School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun 113001,Liaoning,China)Abstract:In order to improve the thermal resistance and electrolyte affinity of separators for lithium-ionbatteries,a composite separator (PPCS)based on polyethylene terephthalate (PET)nonwoven and polyacrylonitrile (PAN)resin was prepared by the phase inversion method.The physical-chemical properties and battery performances of PPCS were systematically characterized,such as the structure,tensile strength,electrolyte property and thermal resistance as well as the charge-discharge performance.The results indicated that PPCS had a uniform microporous structure with an average pore diameter of about 425nm and a porosity of 74%,and its tensile strength was up to pared with commercial separators,PPCS exhibited better electrolyte properties (electrolyte uptake of 365%,contact angle of 0°)and higher ion conductivity (1.65mS/cm).Meanwhile,this composite separator possessed superior thermal stability with a shrinkage ratio of about 0at 150℃for 0.5h.Based on the above advantages,lithium cobalt oxide/Li cells assembled with PPCS exhibited good battery performances.For example,the dischargecapacity retention was 95.2%after 200cycles at 0.2C and the discharge capacity retention at 10C was研究开发DOI ：10.16085/j.issn.1000-6613.2021-1132收稿日期：2021-05-29；修改稿日期：2021-06-29。