Journal of Fiber Science and Technology最新文献_第10页

Synthesis of Novel Epoxy Resins by Radical Copolymerization of Various Vinyl Ethers having an Epoxy Group with N-Phenylmaleimide and Properties of Their Cured Resins 不同环氧基乙烯醚与n -苯基马来酰亚胺自由基共聚合成新型环氧树脂及其固化树脂性能

IF 0.6 4区工程技术

Journal of Fiber Science and Technology Pub Date : 2020-11-15 DOI: 10.2115/fiberst.2020-0038

Michio Urushisaki, T. Hashimoto, T. Sakaguchi

{"title":"Synthesis of Novel Epoxy Resins by Radical Copolymerization of Various Vinyl Ethers having an Epoxy Group with N-Phenylmaleimide and Properties of Their Cured Resins","authors":"Michio Urushisaki, T. Hashimoto, T. Sakaguchi","doi":"10.2115/fiberst.2020-0038","DOIUrl":"https://doi.org/10.2115/fiberst.2020-0038","url":null,"abstract":": To develop novel epoxy resins having both high adhesion and excellent heat resistance, radical copolymerizations of 4-vinyloxybutyl glycidyl ether (VBGE) or 2-(2-vinyloxyethoxy)ethyl glycidyl ether (VEEGE) with N-phenylmaleimide (NPMI), in addition to copolymerization of 2-vinyloxyethyl glycidyl ether (VEGE) with NPMI, which was reported in our previous study, were carried out. The effects of flexibility of the central chain unit of epoxy-containing vinyl ethers (VEs) on the thermal, mechanical, and adhesive properties of the obtained copolymers were investigated. These radical copolymerizations using AIBN as an initiator in benzene at 60 ̊C afforded copolymers having number-average molecular weights of 91,000 to 161,000 in high yield. 1 H NMR analysis showed that the structure of the obtained copolymers consisted of VBGE unit or VEEGE unit and NPMI unit. The glass transition temperature ( T g ) of the copolymers depended on the composition of the copolymers and decreased as the flexibility of the pendant moiety of VE units increased. The thermal decomposition temperature ( T d ) of the obtained copolymers was higher than 300 ̊C, indicating their high heat resistance. Tensile shear adhesion strength and tensile strength of the cured copolymers (epoxy content: 2.52~2.63 mmol/g) obtained by curing reaction with polyfunctional aromatic amines were measured. Tensile shear adhesion strength was 1.8 to 4.6 N/mm 2 and tensile strength was 21 to 28 MPa, which was found to depend on the flexibility of the pendant moieties of the VE units in the copolymer.","PeriodicalId":54299,"journal":{"name":"Journal of Fiber Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47943261","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}

引用次数: 0

Development of Cibacron Blue-Enhanced Affinity Nanofiber Fabric for Protein Adsorption 纳米纤维对蛋白质吸附性能的研究

IF 0.6 4区工程技术

Journal of Fiber Science and Technology Pub Date : 2020-10-31 DOI: 10.2115/fiberst.2020-0035

Song Liu, T. Sumi, Y. Mukai

引用次数: 3

New Color Mixing Model to Predict Mixed Color Values of Yarn-Dyed Fabrics 色织混色值预测的新混色模型

IF 0.6 4区工程技术

Journal of Fiber Science and Technology Pub Date : 2020-10-31 DOI: 10.2115/fiberst.2020-0036

Zhu Weijing, Qizheng Li, Fei-Meng Zhang, Xiaoke Jin, Chengyan Zhu

引用次数: 1

Cellulose Nanofibers: Recent Progress and Future Prospects 纤维素纳米纤维的研究进展与展望

IF 0.6 4区工程技术

Journal of Fiber Science and Technology Pub Date : 2020-10-31 DOI: 10.2115/fiberst.2020-0039

A. Isogai

{"title":"Cellulose Nanofibers: Recent Progress and Future Prospects","authors":"A. Isogai","doi":"10.2115/fiberst.2020-0039","DOIUrl":"https://doi.org/10.2115/fiberst.2020-0039","url":null,"abstract":": Nanocelluloses are prepared by downsizing plant cellulose fibers, which are efficiently produced at the industrial level as paper and dissolving pulps from renewable wood biomass resources. The number of scientific publications and patents concerning nanocelluloses has been increasing every year, because nanocelluloses are expected to contribute to creation of a sustainable society partly in place of petroleum-based materials. Nanocelluloses are categorized as cellulose nanonetworks (CNNeWs), cellulose nanofibrils or nanofibers (CNFs), and cellulose nanocrystals (CNCs) depending on their morphologies, originating from crystalline cellulose microfibrils abundantly present in each plant cellulose fiber. When no chemical pretreatment is applied to plant cellulose fibers, only CNNeW-type nanocelluloses with heterogeneous morphologies are obtained even after harsh mechanical disintegration in water. In contrast, when position-selective chemical pretreatment is applied to plant cellulose fibers for introduction of a large amount of charged groups on the cellulose microfibril surfaces, CNFs and CNCs with homogeneous ~3 nm widths can be prepared from the chemically pretreated plant cellulose fibers by gentle mechanical disintegration in water. These charged groups are used as scaffolds to add diverse functionalities to nanocelluloses by simple ion exchange in water. Chemical modifications of nanocellulose surfaces, hydrogels, preparation of nanocellulose-containing composites with various organic and inorganic compounds, the fabrication processes from nanocellulose/water dispersions to dried films, fibers, and porous materials, as well as their versatile applications, have been extensively reported in the last few years. In this review, some research topics are selected from nanocellulose-related publications and briefly overviewed.","PeriodicalId":54299,"journal":{"name":"Journal of Fiber Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46915558","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}

引用次数: 21

The Effect of Aramid Fibre Reinforced Polymer Composites for Strengthening RC Beams 芳纶纤维增强聚合物复合材料对钢筋混凝土梁的加固效果

IF 0.6 4区工程技术

Journal of Fiber Science and Technology Pub Date : 2020-10-25 DOI: 10.2115/fiberst.2020-0037

J. Ruben, M. Murugan, J. José

引用次数: 3

Application of Atmospheric Pressure Plasma Oxidation and Plasma-Induced Polymer Coating to Surface Functionalization of Textiles 常压等离子体氧化及等离子体诱导聚合物涂层在纺织品表面功能化中的应用

IF 0.6 4区工程技术

Journal of Fiber Science and Technology Pub Date : 2020-09-15 DOI: 10.2115/FIBERST.2020-0034

K. Gotoh

{"title":"Application of Atmospheric Pressure Plasma Oxidation and Plasma-Induced Polymer Coating to Surface Functionalization of Textiles","authors":"K. Gotoh","doi":"10.2115/FIBERST.2020-0034","DOIUrl":"https://doi.org/10.2115/FIBERST.2020-0034","url":null,"abstract":": Surface functionalization of fibers is one of powerful meanings for improvement of textile performances. In this review, two atmospheric pressure plasma jets (APPJ), plasma oxidation with nitrogen gas and plasma-induced polymer coating with hexamethyldisiloxane, are utilized for the surface functionalization of synthetic fibers, poly (ethylene terephthalate), PET. The PET film with a geometrical simplicity and natural fiber, wool, are also used as materials. The topographical and chemical changes due to the plasma‒PET surface interaction are clearly observed after the APPJ treatments. The APPJ oxidation roughens the PET surface as well as increases the surface atomic oxygen concentration, which makes it hydrophilic. However, remarkable hydrophobization is achieved after the APPJ coating as a result of the deposition of inorganic SiO 2 films and the granular morphology formation on the PET surface. The APPJ oxidation after the APPJ coating makes the PET surface super-hydrophilic. Surprisingly, the APPJ-coated PET surfaces with and without the APPJ oxidation have no contact angle hysteresis and preserve the contact angle to remain almost constant for at least two weeks. With respect to textile performance, the antifouling property of the PET fabric is found to be controlled by the APPJ treatments: soil deposition in air is prevented after the APPJ coating and soil release by laundering is promoted by the APPJ oxidation to the pristine and the APPJ-coated PET fabrics. Water wicking into the PET and wool fabrics is remarkably promoted by the APPJ oxidation. The dyeability of the PET fabric by dispersive dyes is improved by the APPJ oxidation before dyeing. For the wool fabric, color deepening after ink-jet dyeing is significantly increased due to pretreatment by the APPJ oxidation compared with the chemical treatment.","PeriodicalId":54299,"journal":{"name":"Journal of Fiber Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47552064","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}

引用次数: 2

Visualizing Molecular Chaperone Controlled Resilient Cell Traction Force by Micropost Arrays Fabricated by Two-Photon Initiated Polymerization 双光子引发聚合微柱阵列显示分子伴侣控制的弹性细胞牵引力

IF 0.6 4区工程技术

Journal of Fiber Science and Technology Pub Date : 2020-09-15 DOI: 10.2115/FIBERST.2020-0017

Saaya Hayasaki, Miho Shimizu, Yuuki Katsurada, Atsushi Sakai, M. Yanagisawa, Y. Atomi, Toshiyuki Watanabe

引用次数: 0

Synthesis and Dilute Solution Properties of N-(2-Hydroxypropyl) methacrylamide-Based Copolymers N-（2-羟丙基）甲基丙烯酰胺基共聚物的合成及其稀溶液性质

IF 0.6 4区工程技术

Journal of Fiber Science and Technology Pub Date : 2020-09-15 DOI: 10.2115/FIBERST.2020-0033

K. Doi, Rintaro Takahashi, Shota Fujii, K. Sakurai

引用次数: 1

Influences of Bobbin-Counter Weight Mass Balance on the Appearance and Mechanical Properties of Braids 配重质量平衡对编织物外观和力学性能的影响

IF 0.6 4区工程技术

Journal of Fiber Science and Technology Pub Date : 2020-09-15 DOI: 10.2115/FIBERST.2020-0032

Kuniko Matsunashi, M. Tada, Makoto Sakanisi, Yukiko Nakasima, Nanako Okuwaki

引用次数: 1

Study by Molecular Dynamics and First-Principles Calculation on the Influence of Length of Molecular Chain and Entanglement of Molecular Chains on the Strength of Amorphous Polyethylene 分子动力学和第一性原理计算研究分子链长度和分子链缠结对非晶态聚乙烯强度的影响

IF 0.6 4区工程技术

Journal of Fiber Science and Technology Pub Date : 2020-08-15 DOI: 10.2115/fiberst.2020-0031

K. Naito, Y. Ochiai, Rei Tsuboi, Kohei Nimura, K. Yashiro

{"title":"Study by Molecular Dynamics and First-Principles Calculation on the Influence of Length of Molecular Chain and Entanglement of Molecular Chains on the Strength of Amorphous Polyethylene","authors":"K. Naito, Y. Ochiai, Rei Tsuboi, Kohei Nimura, K. Yashiro","doi":"10.2115/fiberst.2020-0031","DOIUrl":"https://doi.org/10.2115/fiberst.2020-0031","url":null,"abstract":": In order to comprehensively investigate from the effects of the morphology (length and entanglement) of the molecular chain on the strength of polyethylene to its fracture mechanism, molecular dynamics simulation of uniaxial tension using low molecular weight amorphous polyethylene and first-principles calculation of uniaxial tension using methylene trimer were performed. As a result, it was found that when the molecular weight is twice the entanglement molecular weight, the molecular chains can not form a network structure. And the bond stretch had the greatest effect on stress, in contrast, the van der Waals force had negative effect on stress and the effect was larger at lower molecular weights. In addition, it is also found that the decrease in stress after reaching the maximum stress is due to slipping of the molecular chains because the molecular chains donʼt break due to tension. Furthermore, the maximum stress increased with the longer the molecular chain because the entanglement point acted as a resistive force against the tension and because the longer the molecular chain, the higher the number of entanglement points. From the above results, it was clarified that the entanglement works positively for stress, the van der Waals force works negatively, and the entanglement of the molecular chains has a large effect on the strength of polyethylene.","PeriodicalId":54299,"journal":{"name":"Journal of Fiber Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41922301","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}

引用次数: 0