Pub Date : 2022-01-01DOI: 10.2115/fiberst.2022-0009
Jin Cheng, S. Kanehashi, K. Ogino
{"title":"Synthesis and Electron Transporting Properties of Polyfluorene-graft-Polystyrene","authors":"Jin Cheng, S. Kanehashi, K. Ogino","doi":"10.2115/fiberst.2022-0009","DOIUrl":"https://doi.org/10.2115/fiberst.2022-0009","url":null,"abstract":"","PeriodicalId":54299,"journal":{"name":"Journal of Fiber Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67639237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.2115/fiberst.2022-0005
Y. Yoshida, Makiko Tada, A. Goto, A. Ohtani, N. Kuwahara, T. Uozumi
: Braiding techniques were often kept secret and detailed instruction about it was rarely described in the documents. Therefore, braiders needed to accumulate experience and cultivate own skill by learning through trial and error. The expert unconsciously used braiding technique learned from substantial experience. In this paper, specific behavior to the expert was investigated. And then, coaching comment of the expert was analyzed to figure out how they determine subjectʼs skill and transfer their own implicit knowledge. It was found that the complicated movement of fingers is one of the specific behavior to the expert and they coach the subject by explaining the differences from their movement. The difference between the expert and subject is identified by deriving from a feeling of strangeness against the subjectʼs behavior.
{"title":"Clarification on Implicit Knowledge by Finger Movement and Coaching Comment of the Expert in Marudai Kumihimo","authors":"Y. Yoshida, Makiko Tada, A. Goto, A. Ohtani, N. Kuwahara, T. Uozumi","doi":"10.2115/fiberst.2022-0005","DOIUrl":"https://doi.org/10.2115/fiberst.2022-0005","url":null,"abstract":": Braiding techniques were often kept secret and detailed instruction about it was rarely described in the documents. Therefore, braiders needed to accumulate experience and cultivate own skill by learning through trial and error. The expert unconsciously used braiding technique learned from substantial experience. In this paper, specific behavior to the expert was investigated. And then, coaching comment of the expert was analyzed to figure out how they determine subjectʼs skill and transfer their own implicit knowledge. It was found that the complicated movement of fingers is one of the specific behavior to the expert and they coach the subject by explaining the differences from their movement. The difference between the expert and subject is identified by deriving from a feeling of strangeness against the subjectʼs behavior.","PeriodicalId":54299,"journal":{"name":"Journal of Fiber Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67639292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.2115/fiberst.2022-0015
Ying-bo Lu, T. Yasui, K. Minegishi, S. Kanehashi, K. Ogino
There has been a recent surge in research on organic optoelectronic materials due to their costeffective product processes and their promising applications in materials science for flexible and printable electronic devices [1-4]. These make it feasible to manufacture innovative electronic products such as organic electroluminescent displays, organic photovoltaic cells and so on [5‒8]. Organic materials based on triarylamine (TAA) have attracted the attention of researchers due to their high thermal stability and excellent hole transport properties [9, 10]. Among them, low molecular-weight TAA derivatives often show impressive performance in organic optoelectronic devices, especially in organic field effect transistors, because of their high purity [11‒14]. Nevertheless, optoelectronic materials based on low molecularweight compounds are usually unstable at high temperatures caused by Joule heating. From this point of view, TAA oligomers have many advantages, and their research has flourished in recent years [15‒24]. Unlike low molecular-weight compounds, oligomers possess better thermal stability and solution processabil ity , which are general characteristics in polymeric samples. In addition, the oligomers with well-defined and unique structures exhibit the additional specific physical-chemical properties. One of well-known examples of TAA oligomers was spiro-OMeTAD, which has an excellent durability due to its rigid spiro structure [15‒18]. However, a few researches have been reported focusing on the application of TAA oligomers to OFET because of their amorphous nature [25, 26]. Our group have synthesized cyclic structures of TAA oligomers with three different sizes in 2011 [27]. It was considered that the cyclic structure without terminal groups results in structural rigidity and thermal stability and a homogeneous electron distribution in a highest occupied molecular orbital to bring about the smooth hole migration. Later studies demonstrated that the cyclic pentamer of 4-butyltriphenylamine (CBTPA-5) possesses quite higher glass transition temperature comparable to that of linear polymer analogue, and exhibits nearly 100 times higher hole mobility compared to the polymer [28]. Interestingly, the lowest solubility in common organic solvents such as toluene, and Abstract: Cyclic hexamers consisting of a 4-octyl, 4-octyloxy and 4-(2-ethylhexyloxy)triphenylamine unit were synthesized via a Buchwald-Hartwig cross coupling reaction using A-A, and B-B type monomers in order to avoid the formation of other cyclic oligomers such as a pentamer and a heptamer. Unlike different size of cyclic oligomers, all hexamers we examined showed clear cold crystallization in 165-240°C in the DSC thermograms. Resulting oligomers were characterized and applied to hole transporting active layer in an organic field effect transistor. The hexamer with 4-octyl groups exhibited the highest field effect hole mobility (1.99 × 10 cm V s). (Received 25 April, 2022; Accepte
由于有机光电材料具有成本效益的产品工艺及其在柔性和可印刷电子器件材料科学中的应用前景，近年来对有机光电材料的研究激增[1-4]。这使得制造有机电致发光显示器、有机光伏电池等创新电子产品成为可能[5-8]。基于三芳胺(triarylamine, TAA)的有机材料因其高热稳定性和优异的空穴输运特性而受到了研究人员的关注[9,10]。其中，低分子量TAA衍生物由于纯度高，在有机光电器件，特别是在有机场效应晶体管中经常表现出令人印象深刻的性能[11-14]。然而，基于低分子量化合物的光电材料通常在焦耳加热引起的高温下不稳定。从这个角度来看，TAA低聚物具有许多优势，近年来其研究蓬勃发展[15-24]。与低分子量化合物不同，低聚物具有更好的热稳定性和溶液加工性，这是聚合物样品的一般特征。此外，具有明确定义和独特结构的低聚物表现出额外的特定物理化学性质。TAA低聚物的一个著名的例子是spiro- ometad，由于其刚性的螺旋结构而具有优异的耐久性[15-18]。然而，由于TAA低聚物的无定形性质，很少有研究报道将其应用于OFET[25,26]。本课课组于2011年合成了三种不同尺寸的TAA低聚物的环状结构。认为无末端基团的循环结构具有较高的结构刚性和热稳定性，电子在占据的最高轨道上分布均匀，从而实现了空穴的平滑迁移。后来的研究表明，4-丁基三苯胺的环五聚体(CBTPA-5)具有比线性聚合物类似物更高的玻璃化转变温度，并且具有比聚合物[28]高近100倍的空穴迁移率。摘要:为了避免形成其他环状低聚物如五聚体和七聚体，采用a - a和B-B型单体通过Buchwald-Hartwig交叉偶联反应合成了由4-辛基、4-辛氧基和4-(2-乙基己氧基)三苯胺单元组成的环六聚体。与不同尺寸的环状低聚物不同，我们检测的所有六聚体在165-240°C的DSC热图中都显示出明显的冷结晶。对所得低聚物进行了表征，并将其应用于有机场效应晶体管的空穴传输有源层。具有4-辛基的六聚体表现出最高的场效应空穴迁移率(1.99 × 10 cm V s)。接受日期:2022年5月17日)
{"title":"Characteristics of Cyclic Triarylamine Hexamers and Application to Organic Field Effect Transistor","authors":"Ying-bo Lu, T. Yasui, K. Minegishi, S. Kanehashi, K. Ogino","doi":"10.2115/fiberst.2022-0015","DOIUrl":"https://doi.org/10.2115/fiberst.2022-0015","url":null,"abstract":"There has been a recent surge in research on organic optoelectronic materials due to their costeffective product processes and their promising applications in materials science for flexible and printable electronic devices [1-4]. These make it feasible to manufacture innovative electronic products such as organic electroluminescent displays, organic photovoltaic cells and so on [5‒8]. Organic materials based on triarylamine (TAA) have attracted the attention of researchers due to their high thermal stability and excellent hole transport properties [9, 10]. Among them, low molecular-weight TAA derivatives often show impressive performance in organic optoelectronic devices, especially in organic field effect transistors, because of their high purity [11‒14]. Nevertheless, optoelectronic materials based on low molecularweight compounds are usually unstable at high temperatures caused by Joule heating. From this point of view, TAA oligomers have many advantages, and their research has flourished in recent years [15‒24]. Unlike low molecular-weight compounds, oligomers possess better thermal stability and solution processabil ity , which are general characteristics in polymeric samples. In addition, the oligomers with well-defined and unique structures exhibit the additional specific physical-chemical properties. One of well-known examples of TAA oligomers was spiro-OMeTAD, which has an excellent durability due to its rigid spiro structure [15‒18]. However, a few researches have been reported focusing on the application of TAA oligomers to OFET because of their amorphous nature [25, 26]. Our group have synthesized cyclic structures of TAA oligomers with three different sizes in 2011 [27]. It was considered that the cyclic structure without terminal groups results in structural rigidity and thermal stability and a homogeneous electron distribution in a highest occupied molecular orbital to bring about the smooth hole migration. Later studies demonstrated that the cyclic pentamer of 4-butyltriphenylamine (CBTPA-5) possesses quite higher glass transition temperature comparable to that of linear polymer analogue, and exhibits nearly 100 times higher hole mobility compared to the polymer [28]. Interestingly, the lowest solubility in common organic solvents such as toluene, and Abstract: Cyclic hexamers consisting of a 4-octyl, 4-octyloxy and 4-(2-ethylhexyloxy)triphenylamine unit were synthesized via a Buchwald-Hartwig cross coupling reaction using A-A, and B-B type monomers in order to avoid the formation of other cyclic oligomers such as a pentamer and a heptamer. Unlike different size of cyclic oligomers, all hexamers we examined showed clear cold crystallization in 165-240°C in the DSC thermograms. Resulting oligomers were characterized and applied to hole transporting active layer in an organic field effect transistor. The hexamer with 4-octyl groups exhibited the highest field effect hole mobility (1.99 × 10 cm V s). (Received 25 April, 2022; Accepte","PeriodicalId":54299,"journal":{"name":"Journal of Fiber Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67639860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Characteristics and Hole Transporting Properties of Cyclic Oligomers Consisting of 4-Octyltriphenylamine","authors":"Ying-bo Lu, Hiroaki Itoi, Kyusun Kim, Ryosuke Ohata, S. Kanehashi, K. Ogino","doi":"10.2115/fiberst.2022-0016","DOIUrl":"https://doi.org/10.2115/fiberst.2022-0016","url":null,"abstract":"4-octyltriphenylamine\u0003units\u0003directly\u0003links\u0003together\u0003at\u00034,4’-positions,\u0003were\u0003isolated\u0003and\u0003characterized\u0003as\u0003hole\u0003 edge\u0003showed\u0003red-shift\u0003resulting\u0003from\u0003the\u0003increase\u0003of\u0003effective\u0003conjugation\u0003length.\u0003It\u0003is\u0003noteworthy\u0003that\u0003Stokes","PeriodicalId":54299,"journal":{"name":"Journal of Fiber Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67639925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.2115/fiberst.2022-0018
T. Motochika, Kenya Morie, Masaki Ohishi, N. Matsumoto, A. Ohtani, A. Nakai
{"title":"Effect of Production Conditions of Semi-Impregnated Commingled Yarn for Thermoplastic CFRP on Textile Processability of Intermediate Materials and Mechanical Properties of Molded Products","authors":"T. Motochika, Kenya Morie, Masaki Ohishi, N. Matsumoto, A. Ohtani, A. Nakai","doi":"10.2115/fiberst.2022-0018","DOIUrl":"https://doi.org/10.2115/fiberst.2022-0018","url":null,"abstract":"","PeriodicalId":54299,"journal":{"name":"Journal of Fiber Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67640703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.2115/fiberst.2022-0025
Yue Zhang, Y. Jia
:Thisworkusedthedyeextractedfromblackriceforthepreparationofecologicalandfunctional textiles,alsothedyeingpropertywasinvestigatedwithdifferentpH(2.0to8.0),dyeingtemperatures(50 °C to 90 °C ),anddyeconcentrations(1%to9%owf).Furthermore,thefunctionalitiesandtheadsorptionkineticsof blackriceextractonwoolwerealsoexplored.Theresultsrevealedthatthematerialhadexcellentdyeing propertiesat90 °C for60min,withadyeconcentrationof5%owf,apHof4.0,andthecolorfastnesswasrated above4.Theinhibitionratesof E. coli and S. aureus remainedabove85.09%and85.78%after10cyclesof accelerated laundering, and the percentage of DPPH scavenging rate was over 80 %.
:Thisworkusedthedyeextractedfromblackriceforthepreparationofecologicalandfunctional textiles,alsothedyeingpropertywasinvestigatedwithdifferentpH(2.0to8.0),dyeingtemperatures(50 °C to 90 °C ),anddyeconcentrations(1%to9%owf).Furthermore,thefunctionalitiesandtheadsorptionkineticsof blackriceextractonwoolwerealsoexplored.Theresultsrevealedthatthematerialhadexcellentdyeing propertiesat90 °C for60min,withadyeconcentrationof5%owf,apHof4.0,andthecolorfastnesswasrated above4.Theinhibitionratesof E. coli and S. aureus remainedabove85.09%and85.78%after10cyclesof accelerated laundering, and the percentage of DPPH scavenging rate was over 80 %.
{"title":"Eco-friendly Dyeing of Wool with Black Rice Extract and Investigation of the Adsorption Kinetics","authors":"Yue Zhang, Y. Jia","doi":"10.2115/fiberst.2022-0025","DOIUrl":"https://doi.org/10.2115/fiberst.2022-0025","url":null,"abstract":":\u0003This\u0003work\u0003used\u0003the\u0003dye\u0003extracted\u0003from\u0003black\u0003rice\u0003for\u0003the\u0003preparation\u0003of\u0003ecological\u0003and\u0003functional\u0003 textiles,\u0003also\u0003the\u0003dyeing\u0003property\u0003was\u0003investigated\u0003with\u0003different\u0003pH\u0003(2.0\u0003to\u00038.0),\u0003dyeing\u0003temperatures\u0003(50 \u0003°C \u0003to\u0003 90 \u0003°C ),\u0003and\u0003dye\u0003concentrations\u0003(1\u0003%\u0003to\u00039\u0003%\u0003owf).\u0003Furthermore,\u0003the\u0003functionalities\u0003and\u0003the\u0003adsorption\u0003kinetics\u0003of\u0003 black\u0003rice\u0003extract\u0003on\u0003wool\u0003were\u0003also\u0003explored.\u0003The\u0003results\u0003revealed\u0003that\u0003the\u0003material\u0003had\u0003excellent\u0003dyeing\u0003 properties\u0003at\u000390 \u0003°C \u0003for\u000360\u0003min,\u0003with\u0003a\u0003dye\u0003concentration\u0003of\u00035\u0003%\u0003owf,\u0003a\u0003pH\u0003of\u00034.0,\u0003and\u0003the\u0003colorfastness\u0003was\u0003rated\u0003 above\u00034.\u0003The\u0003inhibition\u0003rates\u0003of\u0003 E. coli \u0003and\u0003 S. aureus \u0003remained\u0003above\u000385.09\u0003%\u0003and\u000385.78\u0003%\u0003after\u000310\u0003cycles\u0003of\u0003 accelerated\u0003 laundering,\u0003 and\u0003 the\u0003 percentage\u0003 of\u0003 DPPH\u0003 scavenging\u0003 rate\u0003 was\u0003 over\u0003 80\u0003 %.","PeriodicalId":54299,"journal":{"name":"Journal of Fiber Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67641201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-15DOI: 10.2115/fiberst.2021-0026
N. Izu, Yoshihiro Tanaka, Mariko Sato
: Sense spots are distributed on the surface of the skin, and skin vibration affects the touch sensation. The Kawabata evaluation system method is used for hand evaluation of fabrics to provide reproducible tactile sensation. This study aimed to investigate the effect of mechanical stimulation of the skin on the fabric hands. The measurement of physical properties of clothing materials and the touch test were conducted on 12 types of textiles. Regarding physical properties, mechanical, moisture, and heat properties, as well as air permeability, were measured. During the touch test, mechanical stimulations of the skin (skin vibration and friction) for touching the textiles with fingertips were measured and the tactile sensation of the textiles (roughness, stiffness, stickiness, dryness, thermal sensation, comfort sensation, and preference) was evaluated. The effect of physical properties of the textiles and mechanical stimulations of the skin on the tactile sensation was analyzed using multiple regression analysis. The results showed that the mechanical stimulations of the skin yielded a significant effect on the feeling of roughness, stiffness, dryness, thermal sensation, comfort sensation, and preference. Furthermore, although the evaluations of comfort and preference for the touch of textiles were similar, the friction stimulus of the skin affected the comfort, while skin vibration affected the preference. In conclusion, it is necessary to evaluate the tactile sensation of fabrics in consideration of the mechanical stimulation of the skin. We anticipate that our assay will contribute to making comfortable cloth designs.
{"title":"Effect of Skin Vibration and Friction on Tactile Sensations of Clothing Materials","authors":"N. Izu, Yoshihiro Tanaka, Mariko Sato","doi":"10.2115/fiberst.2021-0026","DOIUrl":"https://doi.org/10.2115/fiberst.2021-0026","url":null,"abstract":": Sense spots are distributed on the surface of the skin, and skin vibration affects the touch sensation. The Kawabata evaluation system method is used for hand evaluation of fabrics to provide reproducible tactile sensation. This study aimed to investigate the effect of mechanical stimulation of the skin on the fabric hands. The measurement of physical properties of clothing materials and the touch test were conducted on 12 types of textiles. Regarding physical properties, mechanical, moisture, and heat properties, as well as air permeability, were measured. During the touch test, mechanical stimulations of the skin (skin vibration and friction) for touching the textiles with fingertips were measured and the tactile sensation of the textiles (roughness, stiffness, stickiness, dryness, thermal sensation, comfort sensation, and preference) was evaluated. The effect of physical properties of the textiles and mechanical stimulations of the skin on the tactile sensation was analyzed using multiple regression analysis. The results showed that the mechanical stimulations of the skin yielded a significant effect on the feeling of roughness, stiffness, dryness, thermal sensation, comfort sensation, and preference. Furthermore, although the evaluations of comfort and preference for the touch of textiles were similar, the friction stimulus of the skin affected the comfort, while skin vibration affected the preference. In conclusion, it is necessary to evaluate the tactile sensation of fabrics in consideration of the mechanical stimulation of the skin. We anticipate that our assay will contribute to making comfortable cloth designs.","PeriodicalId":54299,"journal":{"name":"Journal of Fiber Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47813056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-15DOI: 10.2115/fiberst.2021-0024
Miyu Yamagata, H. Uematsu, Y. Maeda, S. Suye, S. Fujita
{"title":"Bundling of Cellulose Nanofibers in PEO Matrix by Aqueous Electrospinning","authors":"Miyu Yamagata, H. Uematsu, Y. Maeda, S. Suye, S. Fujita","doi":"10.2115/fiberst.2021-0024","DOIUrl":"https://doi.org/10.2115/fiberst.2021-0024","url":null,"abstract":"","PeriodicalId":54299,"journal":{"name":"Journal of Fiber Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41530370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-15DOI: 10.2115/fiberst.2021-0025
Shao Weili, Bu Wanjun, Lu Tong, Junli Li, Hewei Xiang, Q. Ni, Jianxin He, F. Liu
: As air pollution has become increasingly serious, anti-haze filter materials have received considerable attention. In this study, a composite window screen with a sandwich structure consisting of a polyacrylonitrile (PAN) nanofiber membrane as the filter layer, a 30 mesh glass fiber mesh as the supporting layer, and a 120 mesh polyester fiber mesh as the protective layer was prepared. We analyzed the effects of different composite methods and composite parameters on the performance of the anti-haze window screen. The results showed that with an increase in the ultrasonic pressure, the peel strength increased, but the nanofiber membrane was damaged by the ultrasonic treatment and the filterability decreased. Using a hot melt adhesive compounding process, the peel strength of the composite window screen increased with an increase in adhesive amount; however, the filtration efficiency remained nearly constant at 95 %, despite the increase in the filtration resistance. The optimal amount of adhesive was confirmed as 1.2 g/m 2 . In addition, the hot melt adhesive composite technology is simple and controllable, which is beneficial for the industrial production of anti-haze window screens.
{"title":"Preparation of Anti-haze Composite Window Screen Based on Nanofibers and Study on the Composite Process Parameters","authors":"Shao Weili, Bu Wanjun, Lu Tong, Junli Li, Hewei Xiang, Q. Ni, Jianxin He, F. Liu","doi":"10.2115/fiberst.2021-0025","DOIUrl":"https://doi.org/10.2115/fiberst.2021-0025","url":null,"abstract":": As air pollution has become increasingly serious, anti-haze filter materials have received considerable attention. In this study, a composite window screen with a sandwich structure consisting of a polyacrylonitrile (PAN) nanofiber membrane as the filter layer, a 30 mesh glass fiber mesh as the supporting layer, and a 120 mesh polyester fiber mesh as the protective layer was prepared. We analyzed the effects of different composite methods and composite parameters on the performance of the anti-haze window screen. The results showed that with an increase in the ultrasonic pressure, the peel strength increased, but the nanofiber membrane was damaged by the ultrasonic treatment and the filterability decreased. Using a hot melt adhesive compounding process, the peel strength of the composite window screen increased with an increase in adhesive amount; however, the filtration efficiency remained nearly constant at 95 %, despite the increase in the filtration resistance. The optimal amount of adhesive was confirmed as 1.2 g/m 2 . In addition, the hot melt adhesive composite technology is simple and controllable, which is beneficial for the industrial production of anti-haze window screens.","PeriodicalId":54299,"journal":{"name":"Journal of Fiber Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48687312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-08-15DOI: 10.2115/fiberst.2021-0022
Koichiro Ishida, S. Yokota, T. Kondo
{"title":"Emulsifying Properties of α-Chitin Nanofibrils Prepared by Aqueous Counter Collision","authors":"Koichiro Ishida, S. Yokota, T. Kondo","doi":"10.2115/fiberst.2021-0022","DOIUrl":"https://doi.org/10.2115/fiberst.2021-0022","url":null,"abstract":"","PeriodicalId":54299,"journal":{"name":"Journal of Fiber Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2021-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44235849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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