基于N-甲基吗啉-N-氧化物溶剂制备聚芳砜酰胺/纤维素阻燃纤维
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摘要
为制备兼具阻燃和吸湿性能的纤维,采用N-甲基吗啉-N-氧化物(NMMO)水溶液为共溶剂,分别将纤维素(cellulose)和聚芳砜酰胺(PSA)溶解后进行共混制备纺丝液,通过干喷湿法纺丝制备PSA/cellulose共混纤维,并对纺丝液及共混纤维的结构和性能进行表征与分析。结果表明:NMMO对PSA具有良好的溶解性能,纺丝液均质、稳定,制备的共混纤维呈现出PSA富集于纤维表层的类皮-芯结构; PSA/cellulose纤维具有良好的阻燃性能、吸湿性能和力学性能,当纤维素质量分数达到30%时,共混纤维仍可达到阻燃纤维标准,其断裂强度为2. 08 c N/dtex,无需后道牵伸处理就能达到较高的强度,此时PSA/cellulose纤维的回潮率提高为8%,具有良好的可染性。
In order to prepare fibers with flame retardant property and good hygroscopicity, Nmethylmorpholine-N-oxide monohydrate( NMMO·H2 O) was used as co-solvent to dissolve aromatic polysulfonamide( PSA) and cellulose,and the PSA/cellulose blend fibers were fabricated by dry-jet wet spinning. The structure and properties of spinning solution and blended fibers were characterized and analyzed. It is found that NMMO·H2 O can dissolve PSA well,and the spinning solution is homogeneous and stable. An analogous ″sheath-core″ morphology is observed in the fibers as PSA distributed more in the sheath domain. The flame retardant property,moisture absorption ability and the mechanical property of the PSA/cellulose blended fibers are good. When the cellulose content is 30% in the blend fiber,the blend fibers still meet the requirement of flame retardant fiber standards. The tensile strength of the blend fiber is up to 2. 08 cN/dtex,which shows a good tensile strength without post treatment. The moisture regain of PSA/cellulose fibers is up to 8%,and the dyeability is also improved.
In order to prepare fibers with flame retardant property and good hygroscopicity, Nmethylmorpholine-N-oxide monohydrate( NMMO·H2 O) was used as co-solvent to dissolve aromatic polysulfonamide( PSA) and cellulose,and the PSA/cellulose blend fibers were fabricated by dry-jet wet spinning. The structure and properties of spinning solution and blended fibers were characterized and analyzed. It is found that NMMO·H2 O can dissolve PSA well,and the spinning solution is homogeneous and stable. An analogous ″sheath-core″ morphology is observed in the fibers as PSA distributed more in the sheath domain. The flame retardant property,moisture absorption ability and the mechanical property of the PSA/cellulose blended fibers are good. When the cellulose content is 30% in the blend fiber,the blend fibers still meet the requirement of flame retardant fiber standards. The tensile strength of the blend fiber is up to 2. 08 cN/dtex,which shows a good tensile strength without post treatment. The moisture regain of PSA/cellulose fibers is up to 8%,and the dyeability is also improved.
引文
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[2]班燕,张玉华,任加荣.芳砜纶在耐高温滤料中的应用[J].产业用纺织品,2006,24(12):33-36.BAN Yan,ZHANG Yuhua,REN Jiarong.The application of polysulfonamide fiber in high temperature resistant filtration material[J].Technical Textiles,2006,24(12):33-36.
[3]汪晓峰,张玉华.芳砜纶的性能及其应用[J].纺织导报,2005(1):18-20.WANG Xiaofeng,ZHANG Yuhua.Properties and applications of polysulfonamide fiber[J].China Textile Leader,2005(1):18-20.
[4]STUHIMANN I,王宗伟.芳砜纶(PSA)在阻燃和防火纺织品上的应用[J].国际纺织导报,2009,37(3):64-64.STUHIMANN I,WANG Zongwei.Tanlon PSA fibers for flame and fire resistant textiles[J].Melliand China,2009,37(3):64-64.
[5]彭浩凯,郑帼.氧气等离子体处理对芳砜纶纤维表面性能的影响[J].高分子材料科学与工程,2015,31(6):122-125.PENG Haokai,ZHENG Guo.Effect of oxygen plasma treatment on surface modification of polysulfonamide fiber[J].Polymeric Materials Science and Engineering,2015,31(6):122-125.
[6]李旭明,曹婵珍,陈桂云,等.等离子体处理对原棉织物亲水性的影响[J].纺织学报,2011,32(12):24-27.LI Xuming,CAO Chanzhen,CHEN Guiyun,et al.Influence of plasma treatment on hydrophilicity of raw cotton fabrics[J].Journal of Textile Research,2011,32(12):24-27.
[7]陈志军,黄年华,张泽辉,等.紫外光引发丙烯酰胺接枝改性棉织物亲水性的研究[J].染整技术,2012,34(1):1-4.CHEN Zhijun,HUANG Nianhua,ZHANG Zehui.Study on the hydrophilicity of acrylamide grafting modified cotton fabric initiated by ultraviolet light[J].Textile Dyeing and Finishing Journal,2012,34(1):1-4.
[8]NDLOVU L N,SIDDIQUI Q,OMOLLO E,et al.Physical properties of plain single jersey-knitted fabrics made from blended and core-spun polysulfonamide/cotton yarns[J].Textile Research Journal,2015,85(3):262-271.
[9]吴万涛.聚芳砜酰胺纺丝工艺与纤维结构性能研究[D].上海:东华大学,2010:28-50.WU Wantao.Relationship between spinning technology and structure property of polysulfonamide fiber[D].Shanghai:Donghua University,2010:28-50.
[10]WU K,YAO Y,YU J,et al.Cellulose/aromatic polysulfonamide blended fibers with improved properties[J].Cellulose,2017,24(8):1-10.
[11]WU K,YU J,YANG J,et al.Properties and phase morphogy of cellulose/aromatic polysulfonamide alloy fibers regulated by the viscosity ratio of solution[J].Cellulose,2017(12):1-12.
[12]GOLOVA L K,MAKAROV I S,MATUKHINA E V,et al.Solutions of cellulose and its blends with synthetic polymers in N-methylmorpholine-N-oxide:preparation,phase state,structure,and properties[J].Polymer Science,2010,52(11):1209-1219.
[13]ONISHI H,MACHIDA Y.Biodegradation and distribution of water-soluble chitosan in mice[J].Biomaterials,1999,20(2):175-182.
[14]ROUS M A,MANIAN A P,RODER T,et al.Fluorescent molecular probes for the characterisation of fibre structure and distribution of textile resin finishing on Lyocell[J].Lenzinger Berichte,2004(83):92-98.
[15]UTRACKI L A,KANIAL M R.Melt rheology of polymer blends[J].Polymer Engineering&Science,1982,22(22):96-114.
[16]UTRACKI L A.Melt flow of polymer blends[J].Polymer Engineering&Science,1983,23(11):602-609.
[17]PAN Z,CHEN Y,ZHU M,et al.The non-uniform phase structure in blend fiber:II:the migration phenomenon in melt spinning[J].Fibers and Polymers,2010,11(4):625-631.
[18]YU J,TIAN F,CHEN S,et al.Structure and property devel opment of aromatic copolysulfonamide fibers during wet spinning process[J].Journal of Applied Polymer Science,2015,132(31).
[19]侯学妮,周国丽,王祥荣.纺织品阻燃性能测试和评价方法的分析[J].印染助剂,2015(5):49-52.HOU Xueni,ZHOU Guoli,WANG Xiangrong.Comparison and analysis of testing and evaluation method for flame-retardant performance of textiles[J].Textile Auxiliaries,2015(5):49-52.
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