Journal of Polymer Science最新文献

{"title":"Fabrication of emulsion-templated open-cell polymethacrylimide foam","authors":"Yijing You,&nbsp;Qi Liu,&nbsp;Zhiwei Li,&nbsp;Ruiyun Cai,&nbsp;Yun Zhu,&nbsp;Shengmiao Zhang","doi":"10.1002/pol.20240475","DOIUrl":"10.1002/pol.20240475","url":null,"abstract":"<p>In this work, the emulsion-templating technique is proposed to fabricate polymethacrylimide (PMI) foam for the first time. Different from those PMI foam reported in the literature, having a closed-cell structure with submillimeter-sized voids, the emulsion-templated PMI foam has an obvious open-cell structure with micrometer-sized voids. The pore structure, density, and porosity of the PMI foam herein could be tuned by simply changing the internal phase volume fraction and/or the surfactant concentration of the emulsion template. The density of PMI foam is varied between 0.174 and 0.350 g·cm⁻³. The prepared PMI foam exhibited excellent mechanical properties, the compressive strength and compressive modulus ranged from 4.87 to 7.48 MPa and from 58.67 to 124.67 MPa, respectively, which are both much higher than the traditional closed-cell PMI foams with similar density. The prepared PMI foam has excellent thermal resistance with its initial thermal decomposition temperature of 325°C in nitrogen and 253°C in air. The novel porous structure combined with its high strength and high heat resistance would expand the application of PMI foam.</p>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"62 20","pages":"4763-4772"},"PeriodicalIF":3.9,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141934557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of in-situ fibrillated polytetrafluoroethylene on the rheological, mechanical, and foaming properties of polystyrene based nanocomposite foams","authors":"Minghao Zhou,&nbsp;Shudong Chen,&nbsp;An Huang","doi":"10.1002/pol.20240330","DOIUrl":"10.1002/pol.20240330","url":null,"abstract":"<p>Polystyrene/polytetrafluoroethylene (PS/PTFE) in-situ fibrillated nanocomposites were prepared by melt blending using a HAAKE torque rheometer, and the effects of different contents of in-situ nanofibrillated PTFE on the properties of PS/PTFE nanocomposites were studied. The results showed that PTFE was in-situ nanofibrillation in the composites, and the toughness, energy storage modulus and complex viscosity of PS/PTFE nanocomposite are all improved. When the content of PTFE was 3 wt%, the elongation at break was the highest, which was three times that of neat PS. What is more, the addition of PTFE significantly improved the cell morphology of PS/PTFE nanocomposite foams by supercritical fluid foaming. The cell structure and morphology of PS/PTFE (3 wt%) nanocomposite foam was the best under 110°C foaming temperature, and the cell diameter and cell density were 3.27 μm and 1.11 × 10¹⁰ cells/cm³, respectively. In addition, the tensile strength of PS/PTFE nanocomposite foams increased from 35.4 MPa of neat PS foam to 39.6 MPa of PS/PTFE (3 wt%) foam.</p>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"62 20","pages":"4742-4752"},"PeriodicalIF":3.9,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141886963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Designing of carbon nanohorn-based heterostructure for improved mechanical properties, flame retardancy, and hydrophobicity of composite aerogels","authors":"Jie Xu,&nbsp;Xiangrong Liu,&nbsp;Li Wang,&nbsp;Yingkun Zhu,&nbsp;Xiang Ao,&nbsp;Fanhui Guo,&nbsp;Zhipeng Xie,&nbsp;Feng Liang,&nbsp;De-Yi Wang,&nbsp;Jianjun Wu","doi":"10.1002/pol.20240355","DOIUrl":"10.1002/pol.20240355","url":null,"abstract":"<p>Developing flame-resistant thermal insulation aerogels with strong mechanical properties is crucial for addressing the fire hazards in high-rise buildings. Carbon nanomaterials have garnered significant attention for enhancing the flame retardancy and mechanical properties of polymers due to their safety, nontoxicity, and low additions. In this work, the effect of single-walled carbon nanohorns (SWCNHs) on the mechanical properties, thermal insulation properties, thermal stability, flame retardancy, and hydrophobicity of polyvinyl alcohol/KH560/phytic acid composite aerogel (PKASx) was investigated. By adjusting the concentration of SWCNHs, the mechanical properties of the aerogel were significantly improved, owing to robust interactions between SWCNHs and the matrix. However, a declining trend was observed in both the compressive modulus and specific modulus when the quantity of SWCNHs exceeded 0.3%. Simultaneously, the PKAS0.3 aerogel exhibited remarkable flame retardancy and self-extinguishing characteristics. It possessed a high LOI value of 34.2 ± 0.2%, with a 25.2% reduction in pHRR and an 18.6% reduction in THR. Moreover, the analysis of TSP and SPR curves affirmed that the inclusion of SWCNHs effectively minimized the production of gaseous by-products during combustion. In addition, the introduction of SWCNHs introduced a trade-off in the roughness of the aerogel. The maximum contact angle occurred at the optimal concentration of SWCNHs.</p>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"62 20","pages":"4773-4788"},"PeriodicalIF":3.9,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141886964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cover Image, Volume 62, Issue 15","authors":"","doi":"10.1002/pola.31260","DOIUrl":"10.1002/pola.31260","url":null,"abstract":"<p>The caption: The cover image is based on the article <i>Impact of ring structure and conjugation on the dielectric properties of polyimides at a high frequency of 10–40 GHz</i> by Meng-Hsuan Wu et al., https://doi.org/10.1002/pol.20230799</p><p>In addition to polyimide synthesis, the structure–property relationship of five- or six-membered polyimides is systematically investigated and correlated with their simulated parameters. The cover image presents a complex scene during data processing and correlations of dielectric properties of polyimides at high frequencies. With a focus on comparing their characteristics, using simulation data to establish predictive models for properties is a crucial element in this work.</p><p>The image was created by my student, Meng-Hsuan Wu, who is the first author of this work.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"62 15","pages":"i"},"PeriodicalIF":3.9,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pola.31260","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141886965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and fabrication of highly aligned poly(l-lactide-co-ε-caprolactone) nanofiber yarns and braided textiles","authors":"Kun Li,&nbsp;Shaojuan Chen,&nbsp;Shaohua Wu","doi":"10.1002/pol.20240483","DOIUrl":"10.1002/pol.20240483","url":null,"abstract":"<p>An approach that combines a modified electrospinning method with thermal stretching post-treatment is designed to fabricate poly(l-lactide-co-ε-caprolactone) (PLCL) electrospun nanofiber yarns (ENYs). The nanofiber diameter in the PLCL ENYs is found to present an increasing trend with the increasing of polymeric concentration. When the PLCL concentration reaches 13% (w/v), the as-generated ENYs show bead-free and uniform nanofibrous structure. Then, a thermally stretching technique is applied to process the primarily-obtained PLCL ENYs. When the stretching temperature is set as 60 °C, the thermally-stretched PLCL ENYs present superior fiber orientation and notably enhanced crystallinity, thus resulting in dramatically increased mechanical properties. Finally, the thermally stretched PLCL ENYs are further processed into braided fabrics, and their mechanical properties are found to possess an obviously increased trend with the increasing of ENY numbers, demonstrating the adjustment feasibility of the mechanical properties of ENY-based textiles by controlling the ENY numbers. Importantly, the <i>in vitro</i> cell studies demonstrate that the ENY-based braided textiles significantly support the adhesion and proliferation of human dermal fibroblasts (HDFs). In all, the present study provides an easily-handling strategy to fabricate high performance PLCL ENYs, which shows promising future for the generation of advanced biomedical textiles.</p>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"62 20","pages":"4730-4741"},"PeriodicalIF":3.9,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141866581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bio-composite using polyhydroxyalkanoates and sustainable nanofillers derived from cellulose nanofibers and its application for an environmentally friendly packaging material","authors":"Jaemin Jo,&nbsp;Bonwook Koo","doi":"10.1002/pol.20240419","DOIUrl":"10.1002/pol.20240419","url":null,"abstract":"<p>Polyhydroxyalkanoates (PHA) is a carbon neutral material that contributes to reducing greenhouse gas emissions due to manufactured from biomass and easily degraded by the enzymatic effects of microorganisms in the natural environment. However, PHA exhibits poorer mechanical properties and processability compared with petroleum-based plastics. This study used cellulose nanofiber (CNF) to improve limit of PHA. Moreover, CNF was silylated to reduce polarity difference with PHA and enhance the dispersibility of nanocellulose at PHA. At a result, the silylation process was successfully performed by Si-CH₃ stretching peaks in Fourier transform infrared spectroscopy spectra and hydrophobicity of TEOS-MTES-CNF (TECNF) was confirmed by observed water contact angle (147°). In addition, nanostructure of TECNF was maintained during silylation and drying process through field emission scanning electron microscopy. Moreover, the PHA/TECNF composite showed enhanced processability, and tensile strength was increase almost 37% (0.52 MPa) compared with PHA. Oxygen transmission rates (300 cc/m²۰day) and single lap shear strength (225 kPa) were determined to be at least equivalent or superior to those of commercial packaging materials. Therefore, TECNF could be considered as a reinforcing agent, nucleating agent, and plasticizer in PHA. Also, this composite has possibilities to using as environmentally friendly packaging materials.</p>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"62 20","pages":"4706-4717"},"PeriodicalIF":3.9,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141866650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Computer simulation-guided template selection for a molecularly imprinted polymer for selective trifluralin adsorption","authors":"Lianjun Song,&nbsp;Jinkui Wang,&nbsp;Mengzhuo Fan,&nbsp;Yexuan Mao,&nbsp;Xiya Zhang,&nbsp;Tong Bu,&nbsp;Xianqing Huang,&nbsp;Mingwu Qiao,&nbsp;Zhihao Wang,&nbsp;Haipeng Shi,&nbsp;Youyi Wang,&nbsp;Changqing Wang,&nbsp;Meng Dang","doi":"10.1002/pol.20240370","DOIUrl":"10.1002/pol.20240370","url":null,"abstract":"<p>To meet selective adsorption toward trifluralin, a novel molecularly imprinted polymer (MIP) was fabricated by the dummy template molecular imprinting technology. First, computational simulation was performed to select a suitable dummy template, 3,5-dinitro-4-methylbenzoic acid (T1), based on the maximum basis set superposition error (BSSE)-corrected binding interaction energy (ΔE) of the monomer <i>N</i>-vinylpyrrolidone (NVP)-T1 complex and its structural overlap with trifluralin. Then, the MIP was prepared via the bulk polymerization. The adsorption experiments showed the MIP exhibited a trifluralin adsorption capacity of 5.1 mg g⁻¹, an imprinting factor (IF) of 2.2, and short adsorption equilibrium time of 5 min. The adsorption of trifluralin conformed to the Freundlich adsorption (<i>R</i>² = 0.985) and pseudo-second-order model (<i>R</i>² = 0.999). In addition, the MIP exhibited selectivity to trifluralin over other adsorbents, including structural analogs (pendimethalin and oryzalin), pesticide (carbendazim), and nitrocompounds (nitrofurantoin, furazolidone, and furaltadone), with the selectivity factor (<i>β</i>) in the range of 1.2–3.0, respectively. In trifluralin/oryzalin mixture, the IF toward oryzalin was still as high as 1.9. The removal rate of the MIP to trifluralin in environmental water samples ranged from 90.08% to 99.04%. This study provides theoretical and experimental insights for the preparation of MIP using dummy templates.</p>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"62 20","pages":"4718-4729"},"PeriodicalIF":3.9,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141866579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Super tough, electrochemical stability and puncture resistant electrolyte for lithium-metal batteries","authors":"Wanyi Zhang,&nbsp;Ziyu Yang,&nbsp;Xiaoheng He,&nbsp;Yong Xiang,&nbsp;Fang Wu","doi":"10.1002/pol.20240135","DOIUrl":"10.1002/pol.20240135","url":null,"abstract":"<p>Polymer electrolytes (PEs) are widely used in the field of flexible energy storage due to their high safety, good flexibility, and ease of processing. Developing PEs with both high mechanical properties, high ionic conductivity and wide electrochemical stability window (ESW) for lithium-metal batteries (LMBs) is an urgent issue to be addressed. In this work, we designed and synthesized the poly (vinyl alcohol) (PVA)-polyacrylic acid (PAA)-LiCl electrolyte for LMBs with a high ionic conductivity, wide ESW, high modulus and puncture resistance simultaneously. Through the construction of dual cross-linking networks, the PVA-PAA-LiCl exhibits a wide ESW (6.2 V), achieves a notable ionic conductivity (1.08 × 10⁻⁴ S cm⁻¹) at room temperature and can realize a high cycle stability of Li symmetric battery more than 300 h at 1 mA cm⁻²/1 mA h cm⁻². Furthermore, it demonstrates exceptional puncture resistance, capable of withstanding pressures up to 5.73 × 10⁸ Pa exerted by a steel nail, while simultaneously exhibites a commendable tensile strength of 4.9 MPa. Hence, this conceptual framework featuring dual-crosslink network structure offers profound implications for the progression of next-generation flexible energy storage.</p>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"62 20","pages":"4698-4705"},"PeriodicalIF":3.9,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141866582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dedication to Polymer Science & Engineering Research and Education at UMass Amherst","authors":"Todd Emrick","doi":"10.1002/pol.20240538","DOIUrl":"10.1002/pol.20240538","url":null,"abstract":"&lt;p&gt;The accelerating growth and societal importance of polymers span academic disciplines—chemistry, engineering, physics, materials, and interfacial science—and now penetrate critically important aspects of healthcare, energy, transportation, and technology sectors. The University of Massachusetts Amherst has played a pioneering role in the evolution of polymer science, helping transform early industrial discoveries into the modern inclusion of polymers in nearly all academic departments in the materials, chemistry, and engineering disciplines. UMass Amherst, originally founded as the Massachusetts Agricultural College in 1863 following the federal Morrill Act, celebrated its 160th anniversary in concert with the Polymer Science &amp; Engineering (PSE) Department entering its 60th year of dedication to the polymer field. As such, it is a pleasure to present this special issue of the &lt;i&gt;Journal of Polymer Science&lt;/i&gt;, with contributed manuscripts, review articles, and topical perspectives by UMass faculty members (both current and prior) as well as PSE alumni. The subjects of the manuscripts—spanning nanocomposites, biomaterials, interfacial science, theory, and structural characterization—illustrate examples of forefront research in the polymer field.&lt;/p&gt;&lt;p&gt;&lt;i&gt;Polymers at UMass Amherst: a Brief History and Glimpse Forward&lt;/i&gt;. In 1961, UMass Amherst formalized an educational emphasis in polymers by launching the Polymer Research Institute led by Professor Richard Stein. Shortly thereafter, the PSE Department formed. Notably, its first alumnus, Dr. Tisato Kajiyama, became the 21st President of Kyushu University in Japan. Over 700 PhD alumni have since matriculated from PSE and are now found in positions as visionary leaders in industry, academics, and government in the United States and abroad. In the decades following its founding, PSE expanded into a robust Department, now comprising 20 faculty members and a steady state of over 100 graduate students and postdoctoral researchers, as well as frequent U.S. and international visitors who contribute to a vibrant polymer community. A foundational (&gt;40 year) student exchange program with the University of Mainz reflected how international cooperation leads to rich educational impact and long-standing professional endeavors. New efforts with Hokkaido University in Japan (with its 19th century historical ties to UMass as the Sapporo Agricultural College) and the University of Bayreuth will further strengthen international collaboration. Much of PSE's growth has been enabled by federal support, including Center-level grants from the National Science Foundation and Department of Energy, as well as the Center for UMass-Industry Research on Polymers (CUMIRP), an outgrowth of the initial class of NSF-supported Industry-University Cooperative Research Centers. All PSE researchers and visitors benefit from an outstanding suite of facilities, which serve our researchers as well as the broader materials commu","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"62 16","pages":"3595-3596"},"PeriodicalIF":3.9,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pol.20240538","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141866580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication and manipulation of hierarchically porous PEEK membranes based on crystallization-induced phase segregation and sea-island structures","authors":"Xiong Cheng,&nbsp;Jiayao Wang,&nbsp;Mingming Ding,&nbsp;Yong-Biao Yang,&nbsp;Joonho Bae","doi":"10.1002/pol.20240490","DOIUrl":"10.1002/pol.20240490","url":null,"abstract":"<p>Poly ether ether ketone (PEEK) is a premier engineering plastic, which has gained considerable attention in recent years. Our prior research investigated crystallization template techniques and pore formation mechanisms within the PEEK/poly (ether imide) system, paving the way for the development of hierarchically porous membranes (HPMs). Compared to single-porous membranes, HPMs demonstrate enhanced flux and high mass transfer efficiency simultaneously, effectively mitigating the trade-off effects. In this study, we focused on fabricating PEEK HPMs through precise manipulation of a polymer ternary blend system. The meticulous tuning enables intricate control of the hierarchical pore morphology of PEEK at two distinct scales. The finite element simulations not only underscored the crucial role of hierarchical pores in bolstering separation efficiency, but also exhibited strong concordance with the experimental findings. This study provides guidance for future optimization of HPMs with superior separation performance.</p>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"62 20","pages":"4687-4697"},"PeriodicalIF":3.9,"publicationDate":"2024-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141796932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}