Polymer最新文献

{"title":"Corrigendum to “Fluorinated phenanthrenequinoxaline-based D-A type copolymers for non-fullerene polymer solar cells” [Polymer 250 (2022) 124867]","authors":"Ming Liu, Zhi Zheng, Xingjian Jiang, Fengyun Guo, Genene Tessema Mola, Shiyong Gao, Liancheng Zhao, Yong Zhang","doi":"10.1016/j.polymer.2024.127923","DOIUrl":"https://doi.org/10.1016/j.polymer.2024.127923","url":null,"abstract":"The authors regret that the funding number for the <span>National Key Research and Development Program</span> in this article was input in error. The correct version should be “This work was supported by the <span>National Key Research and Development Program</span> of China (Grant No. <span><span>2021YFE0105800</span></span>).”","PeriodicalId":405,"journal":{"name":"Polymer","volume":"69 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142793577","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}

{"title":"Norbornene functionalized with fatty acids: Observing the effect of pendant chains on copolymers obtained by metathesis polymerization","authors":"Kelly A.E. Amorim, Virgínia C.A. Martins, Benedito S. Lima-Neto","doi":"10.1016/j.polymer.2024.127942","DOIUrl":"https://doi.org/10.1016/j.polymer.2024.127942","url":null,"abstract":"In this study, fatty acid chains were used to develop functionalized monomers with the aim of reducing dependence on petroleum sources by utilizing plant-based molecules. Pendant groups can influence the physical, physicochemical, and even chemical properties of the polymeric material relative to the non-functionalized counterpart. Thus, norbornene was functionalized with different fatty acids to produce polynorbornene with pendant chains, using acids with varying olefinic unsaturations, as they can be either straight or curved. Bio-substituted fatty-NBEnyl monomers were then obtained from reactions between the carboxylic-norbornene monomer (NBEnyl) and the respective alcohols of stearic (S; C18:0 olefin), oleic (O; C18:1 olefin), or linoleic (L; C18:2 olefin) fatty acids. Individual fatty-NBEnyl monomers and their mixtures in varying amounts were then copolymerized with norbornene (NBE; 80 or 50 wt% as the balance) via ring-opening metathesis polymerization (ROMP), resulting in polymeric materials with pendant fatty chains. All functionalized monomers and copolymers were fully characterized by FTIR and NMR (^{<strong>1</strong>}<strong>H</strong>; ^{<strong>1</strong>}<strong>³C</strong>). Micrographs and rheological behavior of the copolymers differed from that of poly(NBE). While poly(NBE) is porous, the copolymers exhibited smoother surfaces. The copolymers also showed increased linear viscoelastic regions. The effect of bio-substituents on the copolymer properties is discussed.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"12 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142797566","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}

{"title":"Efficient synthesis of narrow or monodisperse, physically cross-linked, and “living” spherical polymer particles via one-stage ambient temperature photoiniferter-RAFT precipitation polymerization and its particle formation mechanism","authors":"Jingwen Gao, Wanlan Zhang, Yan Zhou, Huiqi Zhang","doi":"10.1016/j.polymer.2024.127936","DOIUrl":"https://doi.org/10.1016/j.polymer.2024.127936","url":null,"abstract":"The efficient synthesis of narrow or monodisperse, physically cross-linked, and “living” spherical polymer particles via one-stage ambient temperature photoiniferter-reversible addition-fragmentation chain transfer precipitation polymerization (pRAFTPP) and its particle formation mechanism are reported. The pRAFTPP of acrylic acid (AA) and methacrylic acid (MAA) in a mixed solvent of acetonitrile and toluene using a trithiocarbonate unit-containing photoiniferter readily afforded uniform poly(AA-<em>co</em>-MAA) micro/nanospheres with surface-bound trithiocarbonate groups, easily tunable sizes and compositions, and low molecular weights under blue light irradiation at room temperature by simply adjusting polymerization parameters (including molar ratio of monomers to photoiniferter, monomer loading, and light intensity). The addition of toluene into the pRAFTPP system largely accelerated the polymerization rate but inhibited the reactivity of trithiocarbonate groups on particle surfaces. Nevertheless, the resulting poly(AA-<em>co</em>-MAA) particles proved to be “living” in pure acetonitrile and they were successfully used as sacrificial templates for fabricating well-defined polymer capsules. Remarkably, the limited light penetration depth of this photoinduced heterogeneous polymerization led to inefficient activation of the photoiniferter and its presence in the reaction solution during the polymerization process. These features of pRAFTPP enabled the polymerization of monomers mainly occurring in the continuous phase instead of on polymer particles, suggesting the existence of a unique “grafting to” particle growth mechanism thereof. This newly developed pRAFTPP, with advantages over thermo-induced RAFTPP such as lower polymerization temperature, faster polymerization rate, and higher monomer loading, can not only address the challenging slow-polymerization-rate issue of the photoinduced heterogeneous polymerizations but also provide a versatile platform for preparing “living” sacrificial templates highly useful for developing advanced polymer micro/nanocapsules that hold much promise in many bioanalytical and biomedical applications.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"2 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142793579","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}

{"title":"Corrigendum to “Micromechanical insights for enhancing the rebound resilience of sealing materials based on TPV” [Polymer 312 (2024) 127679]","authors":"Chengyuan He, Lifeng Ma, Xiaolong Xie, Longhao Li, Xi Kang","doi":"10.1016/j.polymer.2024.127922","DOIUrl":"https://doi.org/10.1016/j.polymer.2024.127922","url":null,"abstract":"The authors regret that, due to an oversight, the affiliation of one of the authors was omitted in the original manuscript. The affiliation of author Xiaolong Xie was incorrectly listed as <em>School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai. 201620, China</em> in the original manuscript. The correct affiliation should be: <em>Shenda (Shanghai) Technology Co., Ltd.201814, China</em>. The authors respectfully request the opportunity to add the affiliation accordingly.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"37 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142793661","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}

{"title":"The influence of PPVE/PMVE/CFE monomers insertion on the ferroelectric behavior of the P(VDF-TrFE)-based electroactive terpolymers","authors":"Jinxiang Shi, Weimin Xia, Yutao Xu, Xiaofang Zhang, Jing Li, Xusheng Wang, Chengmin Hou, Jingjing Liu","doi":"10.1016/j.polymer.2024.127931","DOIUrl":"https://doi.org/10.1016/j.polymer.2024.127931","url":null,"abstract":"The perfluoroalkyl ethylene ether (PMVE), perfluoro propoxyethylene (PPVE), and chlorofluoroethylene (CFE) (&lt;4 mol%) as the third monomers are embed into the ferroelectric polyvinylidene-trifluoroethylene (P(VDF-TrFE)), respectively, aiming to modify the ferroelectric behaviors of the copolymers. Through calculation, we find the PPVE and PMVE molecular segments possess a large free volume but a low polarity, effective promoting the formation of all-trans <em>β</em> phase in the crystal region of P(VDF-TrFE), and contributing to the high maximum and remnant polarization (<em>P</em>_s and <em>P</em>_r) of related P(VDF-TrFE-PPVE) (∼6.3 and 6.8 <em>μ</em>C·cm^-2) and P(VDF-TrFE-PMVE) (∼5.0 and 5.6 <em>μ</em>C·cm^-2) under 200 MV·m^-1, respectively. Differently, the CFE segment provides not only a large volume but also a high polarity, resulting in the phase transition from <em>β</em> to <em>α</em> and thus, the target terpolymer P(VDF-TrFE-CFE) appears a transition from ferroelectrics to relaxor ferroelectrics, and shows a high dielectric permittivity (<em>ε</em>_r∼55.4) at 100Hz. This work may provide a comprehensive insight of modifying the structures of P(VDF-TrFE), offering crucial guidance for optimizing the design of this type ferroelectric materials.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"84 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142788621","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}

{"title":"Multifunctional stimuli-responsive self-healing polyvinyl alcohol/tannic acid/thyme-honey/aloe vera hydrogel as promising antibacterial drug delivery platforms: Physicochemical and in vitro biological assays","authors":"Erfan Behjat, Maryam Tajabadi, Seyed Morteza Naghib, Hamid Reza Rezaie","doi":"10.1016/j.polymer.2024.127897","DOIUrl":"https://doi.org/10.1016/j.polymer.2024.127897","url":null,"abstract":"The utilization of hydrogels in biomedical applications has been on the rise due to their capability to create a moist wound environment and composite with a diverse range of organic and mineral compounds. Our objective was to prepare a pH-responsive system with self-healing and excellent antibacterial properties, capable of releasing active agents at the wound site. Polyvinyl alcohol/tannic acid/thyme-honey/aloe vera hydrogels were synthesized through a freeze-thaw method and characterized for structural, chemical, morphological, antibacterial, and cytotoxicity properties. The hydrogels exhibited remarkable mechanical properties, including tensile strength ranging from 2.51 to 331.44 kPa and compression strength from 2.55 to 16.54 kPa, with viscoelastic behavior suitable for various body tissues. They demonstrated an average healing efficiency of 81% within 10 minutes, enduring mechanical stress commonly encountered in wound dressings. The study evaluated their swelling behavior and pH responsiveness, revealing their potential for maintaining a well-hydrated wound environment. The release profiles of tannic acid, thyme-honey, and aloe vera were 82%, 100%, and 88% within 23 days, respectively. The hydrogels demonstrated outstanding antibacterial efficacy, with an average inhibition rate exceeding 98% against both <em>E. coli</em> and <em>S. aureus</em>, and up to 99% with thyme-honey and aloe vera, enhancing cell proliferation capacity. Overall, the samples are non-toxic, antibacterial, and cost-effective, making them suitable for wound healing and drug delivery.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"8 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142788619","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}

{"title":"Analysis of spider silk in loading-unloading cycles using Raman spectroscopy based on molecular bioinformatics of spidrion","authors":"Yi-qin Hong, Xin-ru Zhang, Li-Hua Wu, Tai-Yong Lv, Gustavo V. Guinea, José Pérez-Rigueiro, Ping Jiang","doi":"10.1016/j.polymer.2024.127910","DOIUrl":"https://doi.org/10.1016/j.polymer.2024.127910","url":null,"abstract":"The mechanical properties of spider silk result from its organization at various levels, including the amino acid sequence, protein structure, protein assembly and full-hierarchical microstructure. However, the relatively few reports that contain an analysis of the motifs along the full-length of the sequences, and of the evolution of their secondary structure when the fiber is subjected to mechanical load, render difficult the task of relating sequence, microstructure and properties for this material. In this study, we identified seven spider major ampullate gland silk proteins of <em>Argiope bruennichi</em>, determine their full-length amino acid motifs, simulated the repeated stretching of spider major ampullate gland silk (MAS) in the natural environment, verified the stability of its mechanical properties, and established the evolution of its protein structure by semi-quantitative analysis of Raman spectroscopy. After stretching at different strains, MAS can recover previous mechanical behavior and exhibit excellent mechanical memory in terms of longitudinal stretching. It is also shown that MAS maintain its mechanical properties through a precise adjustment of protein structure, secondary structure transformation and reconstruction. This study shows that the repeated stretching characteristics of spider major ampullate gland silk may be a post-processing adjustment way that, in combination with its molecular organization, may bring a new inspiration for the relation of sequence-structure-property.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"141 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142788620","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}

{"title":"Designing polydopamine embedded hydrogel with high-stable adhesion and long-term stability at high temperature","authors":"Zhenghua Sun, Xiaoqin Cao, Shiyuan Wang, Yujun Feng, Hongyao Yin","doi":"10.1016/j.polymer.2024.127914","DOIUrl":"https://doi.org/10.1016/j.polymer.2024.127914","url":null,"abstract":"Adhesive hydrogels show great potential for use in tissue repair, soft robotics, ionic devices, and oil and gas extraction. However, there remains a challenge in fabriacting hydrogels with direct stable adhesion and long-term stability at high temperatures. Here, drawing inspiration from the adhesive property and thermal stability of polydopamine (PDA), we propose a facile one-pot method to construct PDA-embedded hydrogel with high-stable adhesive properties across a wide temperature range of 25 to 90 °C. The stable adhesion performance is attributed to the synergy of multiple non-covalent interactions of PDA embedded in the hydrogel matrix and cooperation of cationic group in funcational monomer (3-acrylamidopropyl) trimethylammonium chloride. This hydrogel can undergo rapid gelation process within a few hundred seconds at high temperatures and acquire favorable mechanical strength as well as long-term resistance to high temperatures. Moreover, the hydrogel is applied in proof-of-concept demonstrations as a high-temperature plugging material in an enclosed enverioment, which exhibits an outstanding pressure-bearing capacity of 7.6 MPa for 1 mm cracks at 90 °C, and it further forms secondary plugging region even after breakage. This study envisages that the bioinspired hydrogel, endowed with its remarkable thermal adhesion abilities, holds promising prospects for extensive utiliaztion in high-temperature environments.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"216 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142782862","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}

{"title":"Linear and branched alkyl chain modification of PF resin: Synthesis, pyrolysis and ablative performance at high heat flux","authors":"Temina Mary Robert, Roshith K.R, Vinay Unnikrishnan, Deepthi Thomas, Santhosh Kumar K S, Dona Mathew","doi":"10.1016/j.polymer.2024.127926","DOIUrl":"https://doi.org/10.1016/j.polymer.2024.127926","url":null,"abstract":"Alkyl modified phenolic resins were synthesized by acid catalyzed etherification of Phenol formaldehyde resin (PF) using linear (n-propyl-NPA and n-butyl-NBA) and branched (iso-propyl-IPA and t-butyl-TBA) chain alcohols and characterized. Spectroscopic characterization (FTIR and ¹H NMR) and hydroxyl value revealed the extent of etherification to be ca. 10-13%. Enthalpy of curing was not significantly varied with etherification from the control PF resin. Mechanical property evaluation indicated an increase in elongation by 60-80 %. Glass transition temperature was about 135-144 °C <em>vis- a- vis</em> 148 °C for the unmodified PF resin. Thermal stability of the synthesized PF resins was not significantly altered and a marginal improvement in char residue (PF- 49 % and alkyl modified PF- 54 -57 %) was observed at 900 °C. Low density carbon composites (0.70 g/cc) were processed using these PF resins as matrix resins and porous graphitic felt as reinforcement and evaluated their thermal and ablative characteristics. Alkyl modification improved the wettability of the graphitic felt and a reduction in backwall temperature was observed when the cured composites were subjected to Plasma arc jet at 220 W/cm² at the end of 500 seconds.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"111 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142782667","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}

{"title":"Electrochemical approaches to the synthesis of silicon-containing polymers","authors":"Anastasiia P. Samorodnova, Mikhail N. Khrizanforov, Almaz A. Zagidullin","doi":"10.1016/j.polymer.2024.127925","DOIUrl":"https://doi.org/10.1016/j.polymer.2024.127925","url":null,"abstract":"This review explores the advancements and potential of electrochemical methods in the synthesis of silicon-containing polymers (mainly polysilanes and silicones), a critical area of organosilicon chemistry. Traditional widely used silicon-containing polymers production methods face significant challenges due to the reliance on organochlorine compounds, which are hazardous to handle and pose environmental risks. Electrochemical approaches offer a promising alternative, providing greater control over reaction conditions, minimizing the formation of by-products, and enabling the use of more environmentally friendly precursors. This review highlights the various electrochemical techniques applied in the synthesis of polysilanes and silicones, including both oxidative and reductive processes. It also discusses the potential for these methods to address existing limitations in silicon-containing polymers production, such as high energy consumption and complex purification steps. Furthermore, the review highlights the direct electrochemical functionalization of silicon dioxide SiO₂ as a particularly underexplored area, presenting a significant opportunity for future research. The integration of electrochemical methods in silicon-containing polymers synthesis not only aligns with the goals of green chemistry but also opens up new avenues for industrial applications, promising more sustainable and efficient production pathways.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"3 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142782863","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}