Journal of Polymer Science最新文献_第10页

Removal of Tetracycline Antibiotic as a Hospital Waste by pH-Sensitive Degradable Composite Hydrogel Using Fenton-Like System Fenton-Like体系ph敏感可降解复合水凝胶去除医院废弃物四环素类抗生素

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2025-01-12 DOI: 10.1002/pol.20240945

Ali Dehghani Firoozabadi, Hossein Eslami, Alireza Sabzevari, Mojtaba Ansari

{"title":"Removal of Tetracycline Antibiotic as a Hospital Waste by pH-Sensitive Degradable Composite Hydrogel Using Fenton-Like System","authors":"Ali Dehghani Firoozabadi, Hossein Eslami, Alireza Sabzevari, Mojtaba Ansari","doi":"10.1002/pol.20240945","DOIUrl":"https://doi.org/10.1002/pol.20240945","url":null,"abstract":"<div>\u0000 \u0000 Fenton-like hydrogels crosslinked with imine bond were prepared for the removal of tetracycline. Initially, the oxidation process of carboxymethyl cellulose (CMC) was performed, and it was named OX-CMC. The confirmations were then obtained using NMR and FTIR analyses. The degree of CMC oxidation was investigated in relation to reaction time, and optimal time of 4 h was selected. In the second part, a pH-sensitive hydrogel with imine bond was prepared from the crosslinking reaction between OX-CMC and chitosan. The formation of the hydrogel through imine crosslinking was confirmed by FTIR spectroscopy. By increasing ratio of OX-CMC to chitosan, the swelling rate for the hydrogel decreased. Turbidity measurements showed that a higher OX-CMC to chitosan weight ratio resulted in slower hydrogel degradation in acidic environments. In the third part, Fe3O4 nanoparticles with concentrations of 5 and 10 wt% were incorporated into the hydrogel structure. TEM studies revealed a spherical morphology and uniform distribution of nanoparticles within the hydrogel network. SEM images revealed a porous structure which composed of interconnected pores in the hydrogel. The results of UV–visible spectroscopy indicated that the degradation of magnetic hydrogels would augment as magnetic nanoparticle content increases, pH decreases, and the hydrogen peroxide content increases.\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"63 5","pages":"1236-1248"},"PeriodicalIF":3.9,"publicationDate":"2025-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527694","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}

引用次数: 0

Comparative Study of Gradient Polymer Composite and Blend Polymer Composite for Ultra-Precision Machine Tools 超精密机床用梯度聚合物复合材料与共混聚合物复合材料的比较研究

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2025-01-11 DOI: 10.1002/pol.20240975

Jicai Yin, Chonggang Ren, Bingchuan Bian, Peng Guo, Xuehu Xie

{"title":"Comparative Study of Gradient Polymer Composite and Blend Polymer Composite for Ultra-Precision Machine Tools","authors":"Jicai Yin, Chonggang Ren, Bingchuan Bian, Peng Guo, Xuehu Xie","doi":"10.1002/pol.20240975","DOIUrl":"https://doi.org/10.1002/pol.20240975","url":null,"abstract":"<div>\u0000 \u0000 Exhibiting excellent mechanical properties and exceptional vibration reduction performance, polymer composite (PC) has garnered significant research interest in various industries, particularly in ultra-precision machining (UPM) machine tool beds. UPM machine tools have a stringent requirement on the comprehensive performance of the bed materials. Specially, the materials of machine tool bed must possess both high mechanical properties and outstanding damping characteristics. However, a major obstacle hindering the widespread adoption of PC in UPM machine tool beds is the difficulty in achieving optimal mechanical properties and vibration reduction simultaneously with the same material composition and curing process conditions. In this study, the effect of various particulates on the mechanical strength, loss factor and the average thermal expansion coefficient of PC were systematically investigated. The experimental findings revealed that the compressive strength of PC improved by the incorporation of particulates. Nevertheless, the flexural strength and tensile strength of PC display an inverse variation. Subsequently, gradient PC and compound PC were designed based on the aforementioned results to achieve the best overall properties for the machine tool bed material. The experimental results highlighted that the left and right tri-gradients materials (L-R-3) exhibited the outstanding comprehensive performance. Moreover, this study provides beneficial information to improve the comprehensive properties of PC. Furthermore, it is of great significance to improve machining accuracy of UPM and increase the machining stability of UPM.\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"63 5","pages":"1226-1235"},"PeriodicalIF":3.9,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527693","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}

引用次数: 0

One-Pot Synthesis of Polycarbonate-b-Polyester Block Copolymers From CO2/Epoxide/ε-Caprolactone Catalyzed by Salen-Cobalt(III) Complex Salen-Cobalt（III）配合物催化CO2/环氧化物/ε-己内酯一锅法合成聚碳酸酯-b-聚酯嵌段共聚物

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2025-01-08 DOI: 10.1002/pol.20240810

Chaogang Fan, Qingyun Ge, Shujuan Lu, Xianshe Feng, Yingfeng Tu, Li Jia, Shaohui Lin, Qinmin Pan, Flora T. T. Ng

{"title":"One-Pot Synthesis of Polycarbonate-b-Polyester Block Copolymers From CO2/Epoxide/ε-Caprolactone Catalyzed by Salen-Cobalt(III) Complex","authors":"Chaogang Fan, Qingyun Ge, Shujuan Lu, Xianshe Feng, Yingfeng Tu, Li Jia, Shaohui Lin, Qinmin Pan, Flora T. T. Ng","doi":"10.1002/pol.20240810","DOIUrl":"https://doi.org/10.1002/pol.20240810","url":null,"abstract":"<div>\u0000 \u0000 A Salen-Co(III)-Cl catalyzed copolymerization strategy is developed for the controlled synthesis of polycarbonate-b-polyester block copolymers through a one-pot process involving CO2, 4-vinyl-1-cyclohexene-1,2-epoxy (VCHO), and ε-caprolactone (ε-CL). This procedure is extended to the copolymerization of CO2, VCHO, and lactide. The catalytic system is designed and optimized with temperature and CO2 acting as triggers to switch between CO2/epoxide copolymerization and ε-CL homopolymerization. In addition, introducing water as the chain transfer agent reduced the polydispersity index (PDI) of the block copolymers. The copolymer composition can be controlled by adjusting the concentration ratio of epoxides and ε-CL, yielding copolymers with carbonate molar ratios ranging from 14% to 67%. The block copolymers exhibit enhanced thermal stability, and the glass transition temperature (T\u0000 g) can be controlled by adjusting the block composition.\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"63 5","pages":"1217-1225"},"PeriodicalIF":3.9,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527736","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}

引用次数: 0

Thermal Treatment Inducing the Building Up of Tailor-Made Chitosan Films Containing Gallic Acid 热处理诱导含没食子酸特制壳聚糖膜的形成

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2025-01-08 DOI: 10.1002/pol.20240764

Matías A. Raspo, Cesar G. Gomez, Alfonsina E. Andreatta

{"title":"Thermal Treatment Inducing the Building Up of Tailor-Made Chitosan Films Containing Gallic Acid","authors":"Matías A. Raspo, Cesar G. Gomez, Alfonsina E. Andreatta","doi":"10.1002/pol.20240764","DOIUrl":"https://doi.org/10.1002/pol.20240764","url":null,"abstract":"<div>\u0000 \u0000 The building up of chitosan (CS)/gallic acid (GA) films was performed by casting method, thermally pre-processing the reaction mixture at several temperatures and process times. This study focused on the thermal treatment impact on the antioxidant activity, mechanical deformation at break, water vapor diffusion, and surface CS film features. It is found that the thermal energy promotes the diffusion of species through CS chains as well as the GA interaction with the polysaccharide, producing films with different structural organizations. Since the crosslinking degree depends on the energy received by the system, heterogeneous materials with a low chain crosslinking and a high free GA content are generated at 40°C, while homogeneous films with covalently crosslinking are mostly generated from 50°C. The free GA availability within segregated CS film regions favors the antioxidant activity, but also the polyphenol interaction with the polysaccharide decreases the crystallinity and elastic modulus, increasing the tensile strength and elongation at break. Since a threshold of 516 kJ energy received regulates the transition from heterogeneous to homogeneous films can be thermally tuned. This discovery represents a controlling synthetic factor critical to the design of materials with unique characteristics such as those required for food packaging.\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"63 5","pages":"1197-1204"},"PeriodicalIF":3.9,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527733","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}

引用次数: 0

AIE-Active CO₂-Based Polycarbonate: A Fluorescent Probe for Sensitive Detection of Mn(VII), Cr(VI) aie活性CO₂基聚碳酸酯：一种灵敏检测Mn(VII), Cr（VI）的荧光探针

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2025-01-08 DOI: 10.1002/pol.20240966

Xin-Yi Liu, Wen-Zhen Wang, Xin-Gang Jia, Qian Wang, Qing Huang, Lei-Lei Li, Zheng-Hao Mao, Da-Ke Zhang, Huan-Ping Chen, Xin-Peng Zheng, Chen- Zhao

{"title":"AIE-Active CO₂-Based Polycarbonate: A Fluorescent Probe for Sensitive Detection of Mn(VII), Cr(VI)","authors":"Xin-Yi Liu, Wen-Zhen Wang, Xin-Gang Jia, Qian Wang, Qing Huang, Lei-Lei Li, Zheng-Hao Mao, Da-Ke Zhang, Huan-Ping Chen, Xin-Peng Zheng, Chen- Zhao","doi":"10.1002/pol.20240966","DOIUrl":"https://doi.org/10.1002/pol.20240966","url":null,"abstract":"<div>\u0000 \u0000 Excessive Mn(VII) and Cr(VI) ions threaten environmental safety and public health. As a result, effective environmental water quality monitoring is required, and the development of materials for rapid and precise detection of hazardous ions in aqueous solutions is imperative. In this study, carbon dioxide-based polycarbonates containing tetraphenylethylene skeletons-based groups (herein referred to as PPCTs) were synthesized in an unprecedented one-pot method using 4-(1,2,2-triphenylethenyl) phenol (T) as the monomer with carbon dioxide and propylene oxide. Fluorescence characterization indicated that modified PPCT retained the aggregation-induced luminescence properties of T. A significant overlap was observed between the ultraviolet absorption bands of the polymer and the MnO4\u0000 2−, and Cr2O7\u0000 2− ions, inducing an internal filter effect that resulted in fluorescence quenching of the PPCT solution. The probe demonstrated specific selectivity against interference, as well as high sensitivity toward these anions, with limits of detection as low as 47.8 nM, 0.438 μM, and 1.12 μM, respectively. Furthermore, the modified PPCT demonstrated enhanced thermal properties compared with those of conventional PPC materials, which are crucial for its application in harsh environments. This innovative material synthesized using CO2 offers a new approach to ion detection in real samples and broadens the scope of poly(propylene carbonate) in fluorescence sensing applications.\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"63 5","pages":"1205-1216"},"PeriodicalIF":3.9,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527735","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}

引用次数: 0

Sustainable Layer-by-Layer Films Using Chitosan Decorated With Anthocyanins and Carboxylated Graphene Oxide for Food Packaging Applications 用花青素和羧化氧化石墨烯修饰壳聚糖的可持续性分层薄膜用于食品包装

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2025-01-04 DOI: 10.1002/pol.20240921

Jiaming Shen, Wendi He, Yahui Zheng, Jianfei Che

{"title":"Sustainable Layer-by-Layer Films Using Chitosan Decorated With Anthocyanins and Carboxylated Graphene Oxide for Food Packaging Applications","authors":"Jiaming Shen, Wendi He, Yahui Zheng, Jianfei Che","doi":"10.1002/pol.20240921","DOIUrl":"https://doi.org/10.1002/pol.20240921","url":null,"abstract":"<div>\u0000 \u0000 The abuse of traditional plastic food packaging has caused severe food safety and environmental pollution, urgently necessitating the development of green and sustainable biodegradable packaging materials. Chitosan (CS) belongs to an inexpensive and readily available biopolymer; however, the poor mechanical properties and weak resistance to UV light and water make it unsuitable for the food packaging industry. In this study, a layer-by-layer (LBL) assembly of CS decorated with anthocyanins as a polycationic electrolyte and carboxylated graphene oxide (GO-COOH) as a polyanionic electrolyte is used to fabricate bio-based films with the aim of improving comprehensive properties of CS-based films. The results indicate that the LBL assembly extremely enhanced the UV-blocking ability (the average transmittance in the UV-B region drops to 1.68%), tensile strength (TS) (53.52 MPa), toughness (71.81%), thermal stability, water resistance, hydrophobicity (the water contact angle is up to 109.5°), and antioxidant activities of the films, attributed to hydrogen bonds among CS, anthocyanins, and GO-COOH and electrostatic interactions between GO-COOH and CS along with anthocyanins. In addition, the LBL films show exceptional advantages in the storage application for fresh-cut apples. In general, the study demonstrates that a novel and sustainable CS-based film can be fabricated by the LBL technique for food packaging.\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"63 5","pages":"1170-1183"},"PeriodicalIF":3.9,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527725","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}

引用次数: 0

A Breakthrough Straightforward Multifunctional Hydrogel Platform Releasing Therapeutic Gas for Advanced Wound Healing 一个突破性的直接多功能水凝胶平台释放治疗气体先进的伤口愈合

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2025-01-04 DOI: 10.1002/pol.20240972

Dieu Linh Tran, Quyen Thi Thuc Tran, Huyen Thanh Anh Nguyen, Ngoc Anh Phung Thi, Hai Nam Phan, Luan Minh Nguyen, Tien-Dung Nguyen Dinh, Ngoc Thuy Trang Le, Ngoc Hoi Nguyen, Dai Hai Nguyen

{"title":"A Breakthrough Straightforward Multifunctional Hydrogel Platform Releasing Therapeutic Gas for Advanced Wound Healing","authors":"Dieu Linh Tran, Quyen Thi Thuc Tran, Huyen Thanh Anh Nguyen, Ngoc Anh Phung Thi, Hai Nam Phan, Luan Minh Nguyen, Tien-Dung Nguyen Dinh, Ngoc Thuy Trang Le, Ngoc Hoi Nguyen, Dai Hai Nguyen","doi":"10.1002/pol.20240972","DOIUrl":"https://doi.org/10.1002/pol.20240972","url":null,"abstract":"<div>\u0000 \u0000 The advancement of therapeutic gas treatment has significantly impacted on the biomaterial field, with nitric oxide (NO) gaining attention for its safety, multifunctionality, and role in regulating biological processes. Thus, this study introduces a novel biocatalytic NO-generating in situ forming hydrogel (GTA/Cu) to address wound-related issues, fabricated through a simple, one-step process by incorporating copper ions (Cu2+) into tannic acid-conjugated gelatin (GTA). Herein, Cu2+ functions simultaneously as a crosslinking agent, NO-generating catalyst, and antibacterial agent, while the galloyl groups in GTA enable effective tissue adhesion and diverse crosslinking interactions. The hydrogels' mechanical properties are controlled by varying Cu2+ concentrations (25, 50, and 100 mg/mL), with higher concentration accelerating gelation and enhancing mechanical strength. At 100 mg/mL Cu2+, the hydrogel releases NO for up to 12 days, reaching a cumulative concentration of around 200 μM. It also demonstrated robust antioxidant activity, high tissue adhesion (~20 kPa), and comparable antibacterial effects to Cu-only samples. Interestingly, the released NO facilitates endothelial cell proliferation, accelerates scratch closure within 36 h, and stimulates new tube formation on Matrigel, showing comparable effects to VEGF. Additionally, it clearly promotes new blood vessel formation in vivo following subcutaneous injection, further highlighting its potential for practical wound healing applications.\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"63 5","pages":"1184-1196"},"PeriodicalIF":3.9,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527731","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}

引用次数: 0

Self-Healing Biobased Thermoreversible Polymer Networks by Photo-Diels-Alder Chemistry 自愈生物基热可逆性聚合物网络的光diols - alder化学

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2025-01-02 DOI: 10.1002/pol.20240466

Masa Alrefai, Milan Maric

{"title":"Self-Healing Biobased Thermoreversible Polymer Networks by Photo-Diels-Alder Chemistry","authors":"Masa Alrefai, Milan Maric","doi":"10.1002/pol.20240466","DOIUrl":"https://doi.org/10.1002/pol.20240466","url":null,"abstract":"Poly(furfuryl methacrylate) (poly(FMA)) homopolymers with controlled molecular weights made via ICAR ATRP undergo photo-crosslinking (λ = 254 nm) with 1,1′-(methylenedi-4,1-phenylene)bismaleimide (BM) by Diels-Alder (DA) chemistry, and are compared to the same DA reaction under non-UV initiated, ambient conditions (RT-DA). FTIR and DSC analysis confirm DA adduct formation and the retro-DA reaction. Co- and terpolymers of FMA with C13MA (alkyl methacrylate with average side length = 13) and isobornyl methacrylate (IBOMA) are prepared to enhance mechanical properties. Poly(C13MA-co-FMA) samples are used to study curing condition effects and BM loading on crosslinking density and thermal behavior. Varying BM loading (0.05–0.2 BM: FMA) in samples cured by photo-DA and RT-DA, UV cured samples showing higher gel content (50% versus 25% for 0.2 BM loading) and two endothermic peaks in the first heating run, unlike RT cured samples which display a single peak. Subsequently, poly(C13MA-co-IBOMA-co-FMA) are crosslinked with BM via photo-DA with resulting networks indicating self-healing/recyclability. FTIR and DSC results confirm DA and retro-DA reactions, while scratched samples of crosslinked terpolymers exhibit self-healing upon heating. Microscopic images show complete scratch healing in just 20 min due to furan-maleimide adduct formation, facilitated by the presence of flexible low T\u0000 \u0000 g\u0000 poly (C13MA) segments and rigid poly (IBOMA) repeating units.","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"63 5","pages":"1157-1169"},"PeriodicalIF":3.9,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pol.20240466","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527708","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}

引用次数: 0

Thermosensitive Molecular Brushes With Alternating Polyoxazoline Side Chains: Synthesis, Characterization, and Solubilization Properties 具有交替聚恶唑啉侧链的热敏分子刷：合成、表征和增溶性能

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2024-12-29 DOI: 10.1002/pol.20240840

Aleksey N. Blokhin, Tatyana Y. Kirila, Alla B. Razina, Serafim V. Rodchenko, Alexander P. Filippov, Andrey V. Tenkovtsev

{"title":"Thermosensitive Molecular Brushes With Alternating Polyoxazoline Side Chains: Synthesis, Characterization, and Solubilization Properties","authors":"Aleksey N. Blokhin, Tatyana Y. Kirila, Alla B. Razina, Serafim V. Rodchenko, Alexander P. Filippov, Andrey V. Tenkovtsev","doi":"10.1002/pol.20240840","DOIUrl":"https://doi.org/10.1002/pol.20240840","url":null,"abstract":"<div>\u0000 \u0000 Using the “grafting through” approach, alternating polymer brushes with different lengths of the backbone and side chains are synthesized. Thermosensitive poly(2-ethyl-2-oxazoline) and poly(2-isopropyl-2-oxazoline) with styrene and maleimide moieties are used as the macromonomers. The prepared polymer brushes are characterized by molar masses in the range of 19,000–52,000 g·mol−1 and have a low dispersity Ð = 1.6–1.9. The number of side chains is from 10 to 20. The LCST behavior of alternating brushes in aqueous solutions is studied by light scattering and turbidimetry. Phase separation temperatures of aqueous solutions of alternating polymer brushes are varied from 37°C to 48°C depending on the length and number of the side chains, as well as on the polymer molar mass. The critical micelle concentrations depend on molar mass and the side chain length, changing from 1.12 × 10−5 to 9.40 × 10−4 mol·L−1, as established by the method of solubilization of a hydrophobic dye. Using the Benesi–Hildebrand method, the binding constants for curcumin and polymer brush samples are determined; their values range from 360 to 63,400 L·mol−1. It is shown that curcumin is effectively bound by polymer brush molecules in the aqueous solutions, which ensures the solubilization of hydrophobic curcumin in water.\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"63 5","pages":"1114-1127"},"PeriodicalIF":3.9,"publicationDate":"2024-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527727","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}

引用次数: 0

Optimizing Lithium Battery Interface: Room Temperature Diels-Alder Cross-Linked In Situ Gel Electrolyte Inhibits Lithium Dendrite Growth 优化锂电池界面：室温diols - alder交联原位凝胶电解质抑制锂枝晶生长

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2024-12-29 DOI: 10.1002/pol.20240544

Aihemaiti Kasimu, Tianwei Hao, Wenhong Ruan, Mingqiu Zhang

{"title":"Optimizing Lithium Battery Interface: Room Temperature Diels-Alder Cross-Linked In Situ Gel Electrolyte Inhibits Lithium Dendrite Growth","authors":"Aihemaiti Kasimu, Tianwei Hao, Wenhong Ruan, Mingqiu Zhang","doi":"10.1002/pol.20240544","DOIUrl":"https://doi.org/10.1002/pol.20240544","url":null,"abstract":"<div>\u0000 \u0000 In situ gel polymer electrolytes (GPEs) are promising for lithium metal batteries due to their high ionic conductivity (≈ 10−3 S cm−1) and outstanding compatibility with electrode interface. However, challenges such as initiator and monomer residue, high initiation temperatures, and low mechanical properties hinder their development. To address these challenges, a low-temperature, catalyst-free method utilizing the Diels-Alder reaction between fulvene and maleimide is proposed, offering a by-product-free solution. With this method, a GPE was prepared through the Diels-Alder reaction between PEG-fulvene and bismaleimide diphenylmethane (BMI), using lithium-sulfur electrolyte (1.0 M LiTFSI in DOL (1,3-dioxolane): DME (Dimethoxyethane) = 1:1 vol% with 1.0% LiNO3) as the solvent. The in situ GPE demonstrates an ionic conductivity of up to 1.11 mS cm−1 at 30°C and maintains stable cycling for 2000 h at a current density of 0.1 mA cm−2. Furthermore, the formation of lithium dendrites is effectively suppressed. The discharge capacity of the LFP/GPE/Li battery was 118.9 mAh g−1 after 200 cycles at 0.5C, with a capacity retention of 88.20%. These results demonstrate that the in situ GPE has excellent capacity retention and cycle life, making the catalyst-free crosslinking strategy at room temperature a new plan for preparing in situ GPE.\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"63 5","pages":"1140-1147"},"PeriodicalIF":3.9,"publicationDate":"2024-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527729","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}

引用次数: 0