Journal of Polymer Science最新文献_第3页

All-Polymer Solid Desiccant With High Moisture Capture Capacity and Fast Sorption Kinetics

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2025-01-13 DOI: 10.1002/pol.20241105

Yangxu Qu, Deyi Mi, Mingyu Guo

{"title":"All-Polymer Solid Desiccant With High Moisture Capture Capacity and Fast Sorption Kinetics","authors":"Yangxu Qu, Deyi Mi, Mingyu Guo","doi":"10.1002/pol.20241105","DOIUrl":"https://doi.org/10.1002/pol.20241105","url":null,"abstract":"<div>\u0000 \u0000 <p>Desiccants play crucial importance in both daily life and industrial production. The development of low-cost and easy industrial scale production all-polymer solid desiccants with high water adsorption capacity, low regeneration temperature, and fast sorption kinetics remains great challenges. Herein, we report a novel all-polymer porous solid desiccant (APPSD) with high moisture capture capacity, low regeneration temperature, and fast sorption kinetics via a new zero-waste, eco-friendly, and easily scaled-up process. The present APPSD could adsorb 0.8 g/g water vapor at 70% relative humidity (RH) within 1.5 h, and 1.9 g/g at 90% RH within 2.0 h at 25°C, exhibiting fast adsorption kinetics. The equilibrium moisture adsorptive capacity is as high as 2.16 g/g at 90% RH and 25°C, much higher than most reported solid polymer desiccants without hygroscopic salts under the same conditions. Amazingly, more than 92% of the absorbed water could be released at 40°C and 20% RH within 30 min, demonstrating extreme low regeneration temperature and high regeneration efficiency. Furthermore, almost no performance decline was observed during a 20-cycle adsorption–desorption measurement, showing excellent recycling stability.</p>\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"63 6","pages":"1271-1283"},"PeriodicalIF":3.9,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143622468","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

Removal of Tetracycline Antibiotic as a Hospital Waste by pH-Sensitive Degradable Composite Hydrogel Using Fenton-Like System

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 <p>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, Fe<sub>3</sub>O<sub>4</sub> 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.</p>\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

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 <p>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.</p>\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

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 <p>A Salen-Co(III)-Cl catalyzed copolymerization strategy is developed for the controlled synthesis of polycarbonate-<i>b</i>-polyester block copolymers through a one-pot process involving CO<sub>2</sub>, 4-vinyl-1-cyclohexene-1,2-epoxy (VCHO), and ε-caprolactone (ε-CL). This procedure is extended to the copolymerization of CO<sub>2</sub>, VCHO, and lactide. The catalytic system is designed and optimized with temperature and CO<sub>2</sub> acting as triggers to switch between CO<sub>2</sub>/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 (<i>T</i>\u0000 <sub>g</sub>) can be controlled by adjusting the block composition.</p>\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

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 <p>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.</p>\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)

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 <p>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 MnO<sub>4</sub>\u0000 <sup>2−</sup>, and Cr<sub>2</sub>O<sub>7</sub>\u0000 <sup>2−</sup> 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 CO<sub>2</sub> offers a new approach to ion detection in real samples and broadens the scope of poly(propylene carbonate) in fluorescence sensing applications.</p>\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

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 <p>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.</p>\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

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 <p>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 (Cu<sup>2+</sup>) into tannic acid-conjugated gelatin (GTA). Herein, Cu<sup>2+</sup> 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 Cu<sup>2+</sup> concentrations (25, 50, and 100 mg/mL), with higher concentration accelerating gelation and enhancing mechanical strength. At 100 mg/mL Cu<sup>2+</sup>, 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.</p>\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

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":"<p>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<i>-co-</i>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<i>-co-</i>IBOMA<i>-co-</i>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 <i>T</i>\u0000 <sub>\u0000 <i>g</i>\u0000 </sub> poly (C13MA) segments and rigid poly (IBOMA) repeating units.</p>","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

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 <p>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<sup>−1</sup> and have a low dispersity <i>Ð</i> = 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<sup>−5</sup> to 9.40 × 10<sup>−4</sup> mol·L<sup>−1</sup>, 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<sup>−1</sup>. 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.</p>\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