Polymer International最新文献_第10页

Correction to “Special issue: visionary polymer research for a better world. The professor R.G. ‘Dick’ Jones commemorative issue” 更正为“特刊：为更美好的世界而进行的富有远见的聚合物研究。R.G.‘Dick’Jones教授纪念刊”

IF 3.2 4区化学

Polymer International Pub Date : 2023-09-27 DOI: 10.1002/pi.6573

引用次数: 0

Preparation and anticorrosion performance of nano polyaniline/polyurethane interpenetrating network composite coating 纳米聚苯胺/聚氨酯互穿网络复合涂层的制备与防腐性能

IF 3.2 4区化学

Polymer International Pub Date : 2023-09-24 DOI: 10.1002/pi.6577

Zhenhua Xu, Huan Yu, Tao Fang, Man Zhang, Jiesheng Liu, Xiaoming Tan

{"title":"Preparation and anticorrosion performance of nano polyaniline/polyurethane interpenetrating network composite coating","authors":"Zhenhua Xu, Huan Yu, Tao Fang, Man Zhang, Jiesheng Liu, Xiaoming Tan","doi":"10.1002/pi.6577","DOIUrl":"10.1002/pi.6577","url":null,"abstract":"Polyaniline−dodecylbenzene sulfonic acid (PANI-DBSA) particles were synthesized through in situ lotion polymerization of aniline and DBSA as raw materials, followed by combining with epoxy resin (E-44) and castor oil (CO) to prepare a PANI mixture (PANI-DBSA/CO) which was used as a nanofiller to create a nano polyaniline/polyurethane (PANI-PU) interpenetrating polymer network (IPN) coating. SEM, XRD and Fourier transform infrared spectroscopy were used to characterize the PANI-DBSA and PANI-PU IPN composite coatings that were produced. The coatings’ physical and mechanical characteristics were investigated, as well as the system's corrosion behaviour in 3.5 wt% NaCl solution, utilizing electrochemical impedance spectroscopy and electrokinetic polarization. Acid, alkali and saltwater immersion investigations were used to further evaluate the coatings’ medium resistance. The results show that when PANI-DBSA is added at 1 wt%, the contact angle reaches 102.6°, the adhesion reaches S1 grade after 720 h immersion, the tensile strength is 16.22 MPa and the elongation reaches 208%. The impedance value of the composite coating grew by 569 times with the addition of 1 wt% PANI, and the resistance duration to 10 wt% H2SO4, 10 wt% NaOH and 3.5 wt% NaCl reached more than 90 days. The addition of PANI to IPN coatings can increase corrosion resistance and extend their application range. © 2023 Society of Industrial Chemistry.","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"73 2","pages":"130-140"},"PeriodicalIF":3.2,"publicationDate":"2023-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135043341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Local analysis of crystalline phases and properties of poly(vinylidene fluoride) electrospun composites with BaTiO3 nanorods 聚偏二氟乙烯与 BaTiO3 纳米棒电纺复合材料晶相和性能的局部分析

IF 3.2 4区化学

Polymer International Pub Date : 2023-09-17 DOI: 10.1002/pi.6576

Aditya Sukma Nugraha, Chen Chia Chou, Bramantyo Bayu Aji

{"title":"Local analysis of crystalline phases and properties of poly(vinylidene fluoride) electrospun composites with BaTiO3 nanorods","authors":"Aditya Sukma Nugraha, Chen Chia Chou, Bramantyo Bayu Aji","doi":"10.1002/pi.6576","DOIUrl":"10.1002/pi.6576","url":null,"abstract":"This study investigated the influence of barium titanate nanorods (BT rods) on the properties and phase formation of poly(vinylidene fluoride) (PVDF) nanofibers of composite membranes created using the electrospinning technique. The primary objective was to assess the effect of varying BT nanorod concentrations on the membrane properties. The result shows that inserting BT rods into PVDF increases β-phase content, which, with an optimal concentration of BT rods, affects the activation energy of thermal degradation resulting in the highest β-phase content and the lowest activation energy at 3% BT content. Moreover, the electrical output of the samples was measured. Using a ball-drop test, the sample containing 3 wt% BT rods exhibited the highest output voltage, reaching 1.64 V. The BT rods play a significant role in promoting the β-phase PVDF molecular chain formation, acting as the polar phase in PVDF and aligning with the polarization direction of the BT rods. According to high-resolution transmission electron microscopy investigations, crystalline phases of PVDF are strongly correlated with the surface charges of perovskite BT rods. The occurrence of charge on the BT rods significantly contributes to fostering the development of the β-phase PVDF molecular chain. It essentially performs the function of the polar phase within the PVDF, aligning itself in accordance with the polarization direction inherent to the BT rods. In conclusion, this study demonstrates the potential of incorporating BT rod polar surfaces to interact with PVDF chain dipole moments, promoting β-phase formation. © 2023 Society of Industrial Chemistry.","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"73 2","pages":"119-129"},"PeriodicalIF":3.2,"publicationDate":"2023-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135548635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of hydrophobic nano-silica/β-nucleating agent on the crystallization behavior and mechanical properties of polypropylene random copolymers 疏水性纳米二氧化硅/β-成核剂对聚丙烯无规共聚物结晶行为和机械性能的影响

IF 3.2 4区化学

Polymer International Pub Date : 2023-09-14 DOI: 10.1002/pi.6575

Shiqi Chen, Luhan Bai, Xuanlun Wang, Handong Li, Ben Bin Xu, Hassan Algadi, Zhanhu Guo

{"title":"Effect of hydrophobic nano-silica/β-nucleating agent on the crystallization behavior and mechanical properties of polypropylene random copolymers","authors":"Shiqi Chen, Luhan Bai, Xuanlun Wang, Handong Li, Ben Bin Xu, Hassan Algadi, Zhanhu Guo","doi":"10.1002/pi.6575","DOIUrl":"10.1002/pi.6575","url":null,"abstract":"In this work, hydrophobic nano-silica (SiO2) and β-nucleating agent are incorporated into polypropylene random copolymer (PP-R) matrix by melt blending. The effect of the content of nano-SiO2/β-nucleating agent on the crystallization and mechanical behaviors of PP-R was investigated in detail. For a nano-SiO2 content of 0.5 wt% and a β-nucleating agent content of 0.5 wt%, the tensile strength and impact strength of the composite were in a more balanced position. Regarding isothermal and non-isothermal crystallization experiments, nano-SiO2/β-nucleating agent significantly accelerated the nucleation and growth of crystallites with a synergistic nucleation effect. Also, the crystallization kinetics of PP-R/nano-SiO2/β-nucleating agent, PP-R/nano-SiO2 and PP-R/β-nucleating agent composites were analyzed and compared using the Avrami equation. The results showed that the PP-R/nano-SiO2/β-nucleating agent composites have better crystallization rate and shorter semi-crystallization time. This study shows far-reaching theoretical and practical implications for accelerating the development of new high-performance PP-R materials. © 2023 The Authors. Polymer International published by John Wiley & Sons Ltd on behalf of Society of Industrial Chemistry.","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"73 2","pages":"108-118"},"PeriodicalIF":3.2,"publicationDate":"2023-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pi.6575","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135043458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A rapid fabrication of flexible fluoropolymer with porous structure based on a high internal phase emulsion template 基于高内相乳液模板的多孔结构柔性含氟聚合物的快速制备方法

IF 3.2 4区化学

Polymer International Pub Date : 2023-09-14 DOI: 10.1002/pi.6574

Xianger Xia, Xiaoshuang Li, Kunkai Ma, Yezhen Chen, Zhenchao Luan, Hongyue Chu, Bing Geng, Mei Yan

{"title":"A rapid fabrication of flexible fluoropolymer with porous structure based on a high internal phase emulsion template","authors":"Xianger Xia, Xiaoshuang Li, Kunkai Ma, Yezhen Chen, Zhenchao Luan, Hongyue Chu, Bing Geng, Mei Yan","doi":"10.1002/pi.6574","DOIUrl":"10.1002/pi.6574","url":null,"abstract":"Although fluorinated porous materials are considered promising candidates due to their high porosity, low density and acid and alkali resistance, they still face several challenges, such as complex preparation methods, heat-induced polymerization of fluorinated emulsion taking too long and material brittleness. In this study, we avoided the difficult problem of stability of fluorine-containing emulsions. We prepared functional hydrophobic hyperelastomers with morphological control, excellent oil absorption and recyclability by thiol–ene click photopolymerization using a water-in-oil high internal phase emulsion as template. The oil absorption capacity of the B4-30%Si sample did not change after 10 recycles. By combining the advantages of organic fluorine and inorganic silicon, the prepared foam retains hydrophobicity and excellent chemical resistance, and has excellent structural and mechanical properties and can be compressed up to a 90% strain without rupture. Finally, the composite porous material B4-30%Si has greater thermal stability (up to 280 °C) than commercially available polypropylene separators, due to the introduction of fluorine and silicon, and better flexibility and mechanical strength than glass fiber separators. Therefore, these materials are promising for use in lithium–sulfur batteries and wearable electronic components after further modification. © 2023 Society of Chemical Industry.","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"73 2","pages":"94-107"},"PeriodicalIF":3.2,"publicationDate":"2023-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135804894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fine-tuning in-plane interdomain spacing of polystyrene-b-poly(ethene-co-butadiene)-b-polystyrene triblock copolymer adding monodisperse polystyrene 添加单分散PS的SEBS三嵌段共聚物的平面内域间距微调

IF 3.2 4区化学

Polymer International Pub Date : 2023-09-08 DOI: 10.1002/pi.6572

Juliana MP Almeida, Lucas H Staffa, Debora T Balogh, Antonio JF Carvalho

引用次数: 0

Preparation of a water-absorbent mesoporous material and film to simulate the infrared spectrum of plants 模拟植物红外光谱的吸水性介孔材料和膜的制备

IF 3.2 4区化学

Polymer International Pub Date : 2023-09-02 DOI: 10.1002/pi.6571

Siqi Zhang, Jianjun Zhang, Yue Zhang, Sude Ma

{"title":"Preparation of a water-absorbent mesoporous material and film to simulate the infrared spectrum of plants","authors":"Siqi Zhang, Jianjun Zhang, Yue Zhang, Sude Ma","doi":"10.1002/pi.6571","DOIUrl":"10.1002/pi.6571","url":null,"abstract":"Hyperspectral imaging poses great challenges to traditional camouflage materials, primarily because there is a huge difference between the reflectance spectra of camouflage materials and natural plants in the 1400–2000 nm band. The difficulty of simulating the natural plant spectrum lies in reproducing the absorption peak of water by increasing the water content in a camouflage material. Herein, a mesoporous (MS) material is used to simulate the plant spectrum because such material can absorb and retain a large amount of water. MS was prepared via a two-step method using tetraethyl orthosilicate and tetrabutyl titanate. The characteristics of the as-prepared MS were examined via X-ray diffraction, transmission electron microscopy, ultraviolet–visible diffusion reflectance spectroscopy and nitrogen adsorption–desorption isotherms. In addition, a film was prepared using the fully absorbent mesoporous material, and the water content was determined via near-infrared spectroscopy and thermogravimetric analysis. The bonding between the mesoporous material and resin was examined via field emission gun scanning electron microscopy. The mechanical properties of the film were measured by a pendulum hardness tester and a cylindrical bending tester. The results indicate that low-temperature synthesis followed by high-temperature hydrothermal treatment is conducive to expanding the mesopore aperture, reaching a maximum of 23 nm. Moreover, the regular structure of the as-prepared titanium-containing mesoporous material is maintained under high hydrothermal temperature. The mesoporous film exhibits a good water absorption capacity of up to 80% by mass and can effectively simulate the spectrum of plants. The mechanical properties of the film are good, and the hardness of the film is related to the content of mesoporous powder. © 2023 Society of Industrial Chemistry.","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"73 1","pages":"61-67"},"PeriodicalIF":3.2,"publicationDate":"2023-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46741771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Special issue: visionary polymer research for a better world. The professor R.G. ‘Dick’ Jones commemorative issue 特刊：富有远见的聚合物研究，创造更美好的世界。R.G.‘Dick’Jones教授纪念版

IF 3.2 4区化学

Polymer International Pub Date : 2023-09-01 DOI: 10.1002/pi.6566

Dr Roger C. Hiorns

引用次数: 0

Designing of molecularly imprinted polymer with carboxylic acid functionality for chiral separation of (±)-3,4-methylenedioxymethamphetamine 具有羧酸官能团的分子印迹聚合物设计用于手性分离（±）-3,4-亚甲基二氧基甲基苯丙胺

IF 3.2 4区化学

Polymer International Pub Date : 2023-08-28 DOI: 10.1002/pi.6570

Hussam Y. Alharbi, Majed S. Aljohani, Mohammed Monier

{"title":"Designing of molecularly imprinted polymer with carboxylic acid functionality for chiral separation of (±)-3,4-methylenedioxymethamphetamine","authors":"Hussam Y. Alharbi, Majed S. Aljohani, Mohammed Monier","doi":"10.1002/pi.6570","DOIUrl":"10.1002/pi.6570","url":null,"abstract":"In this work, we discuss the development of a long-lasting enantioselective material for the effective enantio-recognition of S-3,4-methylenedioxymethamphetamine (S-MDMA) and chiral separation of the (±)-MDMA racemate using a crosslinked poly(acrylic acid-4-vinylpyridine) copolymer. The first step was the synthesis and characterization of an acryloyl-S-MDMA amide. After that, the free radical initiator azobisisobutyronitrile was used to copolymerize the synthesized chiral amide with 4-vinylpyridine and divinylbenzene. The incorporated S-MDMA species were extracted from the polymeric particles by heating them with sodium hydroxide, followed by rinsing with hydrochloric acid. This developed the molecularly imprinted S-MDMA particles, which were visualized with a scanning electron microscope and Fourier transform infrared spectroscopy. The selectivity parameters indicated a higher affinity of the fabricated S-MDMA imprinted particles toward S-MDMA, around 10-fold higher than that related to R-MDMA. Results from Langmuir adsorption experiments at pH 6 demonstrated a maximal capacity of 142 mg g−1. In addition, the values of enantiomeric excess were found to be 94.5% and 79.4% for R- and S-MDMA in the loading and eluant solutions, respectively, after optical separation was done using the column technique. © 2023 Society of Industrial Chemistry.","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"73 1","pages":"50-60"},"PeriodicalIF":3.2,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44801225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dependence of lithium-ion battery separator porous structure and performance on synchronous bidirectional drawing process regulation of β-crystal polypropylene β晶聚丙烯同步双向拉伸工艺规律对锂离子电池隔膜多孔结构和性能的影响

IF 3.2 4区化学

Polymer International Pub Date : 2023-08-25 DOI: 10.1002/pi.6569

Lei Ding, Dandan Li, Sihang Zhang, Fanghui Du, Daoxin Zhang, Feng Yang

{"title":"Dependence of lithium-ion battery separator porous structure and performance on synchronous bidirectional drawing process regulation of β-crystal polypropylene","authors":"Lei Ding, Dandan Li, Sihang Zhang, Fanghui Du, Daoxin Zhang, Feng Yang","doi":"10.1002/pi.6569","DOIUrl":"10.1002/pi.6569","url":null,"abstract":"Uneven separator porous construction inevitably raises lithium-ion migration barriers within the separator and thus limits overall lithium-ion battery (LIB) performance. In this research, serial LIB separators with various porous constructions were prepared precisely by adjusting the synchronous bidirectional drawing temperatures to confirm the bidirectional drawing mode-determined porous constructions and subsequent mechanical properties, thermal stability and electrochemical properties of separators. Crystal structure analyses, porous construction diagnoses, mechanical property characterizations and electrochemical tests reveal the competitive relationship between lamella slip and separation during the synchronous bidirectional drawing process. Lamella slip weakens at lower drawing temperatures, enhancing lamella separation and molecular chain rupture within amorphous regions. Therefore, a separator with broken fibrils presents optimized permeability and smoothed ion migration channels, but inferior mechanical properties and thermal stability. Excessive temperature highlights lamella slip, which damages the pore-forming process, worsens separator permeability and increases ion migration resistance. An appropriate drawing temperature of 100 °C maximally balances lamella slip and separation behaviors, retains intact fibrils and homogenized porous construction, which endows the separator with strengthened mechanical properties, isotropic thermal stability and optimized electrochemical performances. This study provides new insights for synchronous bidirectional drawing in practical separator fabrication and clarifies separator structure-determined LIB performances. © 2023 Society of Industrial Chemistry.","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"73 1","pages":"38-49"},"PeriodicalIF":3.2,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46033569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0