Journal of Fiber Science and Technology最新文献

{"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":"1 1","pages":""},"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}

{"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":"1 1","pages":""},"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}

{"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":"44 1","pages":""},"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":"1 1","pages":""},"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}

{"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":"1 1","pages":""},"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}

{"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":"1 1","pages":""},"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}

{"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":" ","pages":""},"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}

{"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":" ","pages":""},"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}

{"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":"1 1","pages":""},"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}

{"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":" ","pages":""},"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}