Polymer最新文献 - Book学术

Synthesis of high strength, high elasticity, self-healing deep eutectic ionic elastomers based on multiple non-covalent interactions by using biomass glycerol monomer HPA for strain sensors

IF 4.6 2区化学

Polymer Pub Date : 2025-04-18 DOI: 10.1016/j.polymer.2025.128423

Deyang Wang, Jinqing Qu

{"title":"Synthesis of high strength, high elasticity, self-healing deep eutectic ionic elastomers based on multiple non-covalent interactions by using biomass glycerol monomer HPA for strain sensors","authors":"Deyang Wang, Jinqing Qu","doi":"10.1016/j.polymer.2025.128423","DOIUrl":"https://doi.org/10.1016/j.polymer.2025.128423","url":null,"abstract":"Deep eutectic ionic elastomers (DEIEs) have emerged as a research focus in flexible ionic conductors due to their advantages, including rapid and convenient preparation processes, excellent mechanical and electrical properties. However, there remains an obvious research gap in developing DEIEs with superior comprehensive mechanical properties using greener biomass monomers and the simplest formulations. In this study, two novel LiTFSI(lithium bis(trifluoromethane sulfonimide))-based polymerizable deep eutectic solvents systems: HPA(2-hydroxy-3-phenoxypropyl acrylate)/LiTFSI and HEA(2-hydroxyethyl acrylate)/LiTFSI were successfully discovered. Notably, the biomass monomer HPA was utilized for the first time in constructing PDES(polymerizable deep eutectic solvent),and then DEIEs were successfully prepared by UV-initiated free radical random copolymerization using these 2 kinds of PDESs. The DEIEs’ polymer network exhibit various non-covalent interactions, such as hydrogen bonds, dipole-dipole interactions, and π-π interactions, which endow them with high mechanical strength (2.76 MPa), good stretchability (687%), and high elasticity. These abundant physical interactions also confer the material with good self-healing capabilities. Moreover, the DEIEs demonstrates good transparency, sufficient ionic conductivity, and a wide operating temperature range. This material can not only be used for sensing and detecting conventional human physiological activities but also maintains stable sensing performance under complex conditions, such as mechanical damage and low-temperature environments, showcasing significant potential in flexible sensing applications.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"17 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143846984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Construction of Interfacial Reinforcement Structure of Polyphenylene Sulfide foam for Bead Foaming Molding

IF 4.6 2区化学

Polymer Pub Date : 2025-04-18 DOI: 10.1016/j.polymer.2025.128416

Pinzheng Hu, Zun Yuan, Zhaoyuan He, Chunrong Tian, Xiaowen Zhao, Lin Ye

{"title":"Construction of Interfacial Reinforcement Structure of Polyphenylene Sulfide foam for Bead Foaming Molding","authors":"Pinzheng Hu, Zun Yuan, Zhaoyuan He, Chunrong Tian, Xiaowen Zhao, Lin Ye","doi":"10.1016/j.polymer.2025.128416","DOIUrl":"https://doi.org/10.1016/j.polymer.2025.128416","url":null,"abstract":"Polyphenylene sulfide (PPS) is a most widely used special engineering plastic, while the foam research is of great significance to expand its application and meet the requirements in aerospace, automobile, etc. In this work, the skinless PPS foam bead (S-PPS) was first prepared by surface-constrained sc-CO<sub>2</sub> foaming method. Compared with the regular PPS foam bead, the solid skin layer of S-PPS foam bead is completely eliminated, exhibiting obvious honeycomb porous structure, while the cell density of the surface was even higher than that of the core layer. Furthermore, PPS-based foam was prepared with the surface adhesion-assisted molding method of foam beads by using epoxy resin (EP) as the interfacial adhesive layer. The surface affinity and adhesion strength of foam bead with EP reasin was enhanced by formation of surface porous structure, while compared with regular PPS@EP foam with clear adhesion interface between the foam beads and EP phase, for S-PPS@EP foam, the EP phase penetrated and anchored into the micropores on the surface of S-PPS beads, forming a strong mechanically interlocked structure, significantly enhancing both interfacial physical and chemical interactions between the two phases and thereby improving the overall mechanical performance of the bonded foam samples. With increasing adhesive content and interfacial layer thickness, the difference in compressive property between the two types of samples progressively widened. Specifically, the compressive strength of the S-PPS@EP foam samples was improved by approximately 42% compared to the PPS@EP foam samples. This work provides a novel strategy for preparing special engineering plastic foam.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"137 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143849964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Analytical Expressions for Molecular Weight Distribution in Steady-state Radical Polymerizations

IF 4.6 2区化学

Polymer Pub Date : 2025-04-18 DOI: 10.1016/j.polymer.2025.128427

Shenhua Jiao, Rui Liu, Xiaowen Lin, Xi Chen

引用次数: 0

Soft Crawling Robots Inspired by Invertebrate Reptiles: Fabricated with PNIPAM/MWCNTs Composite Hydrogel and Driven by Near-Infrared Light for Multi-Directional Locomotion

IF 4.6 2区化学

Polymer Pub Date : 2025-04-18 DOI: 10.1016/j.polymer.2025.128422

Qinghao Guo, Xuehao Feng, Zhizheng Gao, Xiangyu Teng, Zezheng Qiao, Chuang Zhang, Zhixing Ge, Wenguang Yang

引用次数: 0

Acidity and polarity – Overcoming challenges of the enzyme catalyzed polycondensation of adipic acid and 1,4-butanediol

IF 4.1 2区化学

Polymer Pub Date : 2025-04-17 DOI: 10.1016/j.polymer.2025.128419

Klara M. Saller, Lena Graf, Anna Kruglhuber, Clemens Schwarzinger

{"title":"Acidity and polarity – Overcoming challenges of the enzyme catalyzed polycondensation of adipic acid and 1,4-butanediol","authors":"Klara M. Saller, Lena Graf, Anna Kruglhuber, Clemens Schwarzinger","doi":"10.1016/j.polymer.2025.128419","DOIUrl":"10.1016/j.polymer.2025.128419","url":null,"abstract":"<div><div>Using enzymes in polycondensation reactions poses several advantages in terms of sustainability like reduced temperatures and limited side reactions which allows the synthesis of new polymers. The prediction of the enzymes’ performance is challenging due to its sensitivity to monomer selection and reaction conditions. Since reported results on short-chain dicarboxylic acids and diols often showed low conversions without conclusive explanations, a systematic investigation of the apparently simple polycondensation between adipic acid and 1,4-butanediol was carried out. Screening of reaction temperatures revealed that the performance of <em>Candida antarctica</em> lipase B immobilized on Immobead 150 increased from 30 to 50 °C until deactivation took place at 60 °C. While the diol component did not significantly influence the reactions of short-chain adipic acid esters, the solubility of the free adipic acid in the diol increased with decreasing diol length and rising temperatures. Enzyme deactivation was thus primarily ascribed to the acidity of the reaction medium which is both polarity- and temperature-dependent. Due to low molecular masses after 24 h reaction time using isothermal conditions, the equilibrium was shifted by temperature elevation and pressure reduction in a second step. The formation of oligoesters, in which the monomers were consumed, resulted in less acidic media thus preventing enzyme deactivation even at 60 °C. Increasing the reaction temperature from 40 to 60 °C combined with reducing the pressure led to poly(butylene adipate) samples with average weight molecular weights above 20,000 g mol<sup>−1</sup> using a 1:0.95 ratio of diol and dicarboxylic acid.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"327 ","pages":"Article 128419"},"PeriodicalIF":4.1,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143846985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Hemicellulose-lignin complex reinforcing deep eutectic solvent gels for wearable strain sensing and fire warning monitoring

IF 4.1 2区化学

Polymer Pub Date : 2025-04-17 DOI: 10.1016/j.polymer.2025.128421

Zhihao Du , Xiaoqiu Zhong , Jianhui Qiu , Longxiang Zhu

{"title":"Hemicellulose-lignin complex reinforcing deep eutectic solvent gels for wearable strain sensing and fire warning monitoring","authors":"Zhihao Du , Xiaoqiu Zhong , Jianhui Qiu , Longxiang Zhu","doi":"10.1016/j.polymer.2025.128421","DOIUrl":"10.1016/j.polymer.2025.128421","url":null,"abstract":"<div><div>With the rapid development of new electronic technologies, flexible electronic devices based on conductive gels have emerged and are widely used in wearable electronic devices, electronic skins, electronic fabrics and other fields. However, traditional deep eutectic solvent polymer (PDES) gels face many problems in terms of mechanical strength and conductive properties. In this study, hemicellulose-lignin complex (HLC) extracted from straw was used as a physical cross-linker (additive) to prepare polymethacryloxyethyltrimethyl ammonium chloride-Glycerol (PDMC-Gly) gel. With the addition of 2 wt% HLC, the tensile strength and elastic modulus of HLC/PDMC-Gly gel were 846.2 kPa and 290.0 kPa respectively, both of which were significantly higher than pure PDMC-Gly gel. The introduced HLC with lignin benzene ring structure units gave the gel excellent light transmittance and ultraviolet blocking properties. In addition, the incorporation of HLC reconstructed the hydrogen bonding network within the gel, resulting in the release of free Cl<sup>−</sup> ions. Consequently, the ionic conductivity of gels was significantly enhanced, reaching of 1.61 × 10<sup>3</sup> mS/cm. This gel has excellent sensing sensitivity, humidity responsiveness and thermal stability, and has potential application prospects in the fields of real-time human body detection, environmental detection and fire early warning.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"327 ","pages":"Article 128421"},"PeriodicalIF":4.1,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143847041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Comparative study of UVC irradiation and heat treatment on Fenton-like oxidation of corn starch in a continuous flow system: Performance and greenness

IF 4.6 2区化学

Polymer Pub Date : 2025-04-17 DOI: 10.1016/j.polymer.2025.128418

Armin Fashi, Ali Fallah Delavar, Abbasali Zamani, Nader Noshiranzadeh, Mehrdad Mohammadi

{"title":"Comparative study of UVC irradiation and heat treatment on Fenton-like oxidation of corn starch in a continuous flow system: Performance and greenness","authors":"Armin Fashi, Ali Fallah Delavar, Abbasali Zamani, Nader Noshiranzadeh, Mehrdad Mohammadi","doi":"10.1016/j.polymer.2025.128418","DOIUrl":"https://doi.org/10.1016/j.polymer.2025.128418","url":null,"abstract":"UV irradiation and heat treatment, recognized as environmentally friendly methods, are extensively applied in modifying starch properties. The current work presented Fenton-like oxidation process of corn starch using a blend of H<sub>2</sub>O<sub>2</sub> and CuSO<sub>4</sub> under ultraviolet C (UVC) irradiation (wavelength of 254 nm) and heat exposure (50 °C) within a novel continuous flow system. The parameters of the experimental setup were separately optimized through one-factor-at-a-time and orthogonal design. The optimal conditions for both treatments included the pH value of 5.0 for starch slurry, irradiation duration of 60 min along with oxidant and catalyst concentrations of 2% and 0.5%, respectively. Under the optimized conditions, the effect of using H<sub>2</sub>O<sub>2</sub>/Cu<sup>2+</sup> or H<sub>2</sub>O<sub>2</sub> alone in combination with UVC and heat on physicochemical and structural attributes of native starch was compared. The higher oxidation degree was obtained for treatments of H<sub>2</sub>O<sub>2</sub>/Cu<sup>2+</sup>/Heat (0.461%) and H<sub>2</sub>O<sub>2</sub>/Cu<sup>2+</sup>/UVC (0.378%) compared to the other treatments. The findings showed that thermal treatment exerted a more pronounced influence on properties of oxidized starches compared to UV-C irradiation. Eco-scale methodology verified the green nature of the designed treatments for the starch oxidation.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"8 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143841914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

The Condensed-State Structure and Evolution Mechanism of Poly(butylene-succinate) (PBS) multi-filaments in the Complex Stress and Thermal Fields of the Melt - spinning Process

IF 4.6 2区化学

Polymer Pub Date : 2025-04-17 DOI: 10.1016/j.polymer.2025.128420

Weikuan Huang, Yong Chen, Yaning Wang, Jielin Xu, Xiyue Gao, Ruimin Xie, Jing Wu, Huaping Wang

{"title":"The Condensed-State Structure and Evolution Mechanism of Poly(butylene-succinate) (PBS) multi-filaments in the Complex Stress and Thermal Fields of the Melt - spinning Process","authors":"Weikuan Huang, Yong Chen, Yaning Wang, Jielin Xu, Xiyue Gao, Ruimin Xie, Jing Wu, Huaping Wang","doi":"10.1016/j.polymer.2025.128420","DOIUrl":"https://doi.org/10.1016/j.polymer.2025.128420","url":null,"abstract":"Poly(butylene-succinate) (PBS) is a well-recognized semicrystalline polyester, renowned for its remarkable heat - resistance, extremely rapid crystallization rate, and biodegradability. To date, the constitutive relationship between the condensed-state structure of PBS fibers and their properties has not been systematically explored. This relationship, if understood, could offer theoretical guidance for industrial production. In this study, the structural evolution mechanisms of three types of melt-spun PBS fibers, namely undrawn yarn (UDY), pre-oriented yarn (POY), and fully - drawn yarn (FDY), were investigated. This was accomplished by systematically uncovering the stress-induced orientation and crystallization processes specific to each type during the melt-spinning procedure. The results demonstrated that the fibers crystallized rapidly at lower spinning speeds. Moreover, as the spinning speed increased, stress-induced orientation and crystallization were significantly enhanced, leading to the formation of large - diameter lamellar crystals reaching up to 72.3 nm. However, a higher degree of lamellar crystal diameter imposes limitations on perfect crystallization during the subsequent post - thermal drawing process. Due to the relatively high drawing speed, the “one-step” drawing process (FDY), which combines spinning and drawing, exhibited a significantly weaker stress-inducing effect compared to the “two-step” drawing process. This disparity restricted the orientation and crystallization of FDY fibers during the drawing process. Specifically, after three-times thermal drawing, the degree of orientation and crystallization of FDY fibers were merely 89.3% and 67.5% respectively, whereas those of UDY fibers reached 92.4% and 72.1%. This difference can be ascribed to insufficient heating in FDY fibers at higher drawing speeds compared to UDY fibers.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"10 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143846982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Layered porous and non-porous poly(2-hydroxyethylmethacrylate) hydrogels using emulsion templated polymerization

IF 4.6 2区化学

Polymer Pub Date : 2025-04-16 DOI: 10.1016/j.polymer.2025.128410

Naomi E. Coutinho, Valerie Shnayder, Neil Ayres

引用次数: 0

Enhanced solid α- to γ′-phase transition of poly(vinylidene fluoride) via polar nanodomains with high-concentration ionic liquids

IF 4.6 2区化学

Polymer Pub Date : 2025-04-16 DOI: 10.1016/j.polymer.2025.128396

Chaohao Xu, Xinyang Zhou, Man Xi, Haijun Wang, Jiayao Wang, Jichun You, Yufei Dong

{"title":"Enhanced solid α- to γ′-phase transition of poly(vinylidene fluoride) via polar nanodomains with high-concentration ionic liquids","authors":"Chaohao Xu, Xinyang Zhou, Man Xi, Haijun Wang, Jiayao Wang, Jichun You, Yufei Dong","doi":"10.1016/j.polymer.2025.128396","DOIUrl":"https://doi.org/10.1016/j.polymer.2025.128396","url":null,"abstract":"Timesaving but efficient fabrication strategy of γ′-poly(vinylidene fluoride) (PVDF) materials is highly demanded for manufacturing PVDF-based electronic devices, yet remains challenging so far. In this work, over 90% γ′-phase crystals have been obtained in just 50 min in microphase-separated PVDF-co-(PVDF-g-IL) [i.e., the copolymer of PVDF and PVDF grafted with ionic liquid (IL, 1-butyl-3-vinylimidazolium tetrafluoroborate)]. Our results indicate that the PVDF-g-IL nanodomains with high-concentration ILs induced by microphase separation play multiple roles in the fast and high-efficiency solid phase transition of PVDF crystals. Firstly, they produce nucleation effect instead of depression effect on the crystallization of PVDF matrix since all miscible ILs have been restricted in these domains; secondly, the high-concentration ILs in PVDF-g-IL nanodomains facilitates to induce polar conformation of PVDF segments and the consequent γ′-phase PVDF crystals; finally, the solid phase transition can be spread to the whole specimen with the help of widely distributed PVDF-g-IL nanodomains within PVDF matrix, regardless of the thickness of specimen. Our results are significant for not only the fabrication of γ′-PVDF composites, but also the basic understanding of solid α- to γ′-phase transition.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"4 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143837325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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