Reactive & Functional Polymers最新文献

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Facile synthesis of polyester-polyether block copolyols for the sustainable high-performance polyurethane reactive hot melt adhesives 用于可持续高性能聚氨酯反应型热熔胶的聚酯-聚醚嵌段多元醇的简易合成
IF 4.5 3区 工程技术
Reactive & Functional Polymers Pub Date : 2024-10-13 DOI: 10.1016/j.reactfunctpolym.2024.106070
{"title":"Facile synthesis of polyester-polyether block copolyols for the sustainable high-performance polyurethane reactive hot melt adhesives","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106070","DOIUrl":"10.1016/j.reactfunctpolym.2024.106070","url":null,"abstract":"<div><div>The presence of polyols with both polyester and polyether structures in polyurethane enhances bonding strength and facilitates easy curing. In this study, polyester-polyether block polyols with varying molecular weights (2500–3500) were synthesized through ring-opening polymerization (ROP) using <em><span>l</span></em>-lactide (LA) and <em>ε</em>-Caprolactone (CL). The chemical structure of the polyols was characterized using <sup>1</sup>H nuclear magnetic resonance (<sup>1</sup>H NMR), Fourier transform infrared (FTIR), and gel permeation chromatography (GPC). Differential scanning calorimetry (DSC) and polarized optical microscopy (POM) were employed to examine the crystalline morphology of the polyols. Subsequently, the synthesized polyols were combined with 4,4′-diphenylmethane diisocyanate (MDI) and other additives to prepare polyurethane reactive hot melt adhesives. It was observed that, in PCL-based polyurethane reactive hot melt adhesives, increasing the molecular weight of the polyols resulted in improved crystalline morphology, increased lap shear strength and tensile strength, and enhanced thermal stability. On the other hand, PLA-based polyurethane reactive hot melt adhesives exhibited low bonding strength and lacked practical application value due to the poor toughness of PLA. Interestingly, the bonding strength and tensile strength of PLA-based polyurethane reactive hot melt adhesives improved when physically blended with PCL-based polyurethane reactive hot melt adhesives. These polyols offer a novel approach for utilizing LA and CL in adhesive applications.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142441284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Adsorption of fluoxetine in aqueous environments: Development of macroporous cryogels based on sodium poly(acrylate) and carboxymethyl chitosan 水环境中氟西汀的吸附:基于聚丙烯酸钠和羧甲基壳聚糖的大孔低温凝胶的开发
IF 4.5 3区 工程技术
Reactive & Functional Polymers Pub Date : 2024-10-11 DOI: 10.1016/j.reactfunctpolym.2024.106069
{"title":"Adsorption of fluoxetine in aqueous environments: Development of macroporous cryogels based on sodium poly(acrylate) and carboxymethyl chitosan","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106069","DOIUrl":"10.1016/j.reactfunctpolym.2024.106069","url":null,"abstract":"<div><div>This study focuses on the development of macroporous monoliths using cryopolymerization of sodium acrylate/carboxymethyl chitosan solutions for the adsorption of the antidepressant fluoxetine in aqueous environments. The cryogels were characterized using various analytical techniques, and the effects of pH, temperature, initial concentration, and contact time on the adsorption capacity were investigated. The surface charge of the cryogel was negative when pH<sub>solution</sub> &gt; pH<sub>PZC</sub>, and pH 8.5 was optimal for swelling rates and fluoxetine removal efficiency. The NaPA<sub>4</sub>-CMCs cryogel (0.5 mg.mL<sup>−1</sup>) showed the best adsorption performance, with the pseudo-first-order model best describing the experimental kinetics data. The intraparticle diffusion model revealed rapid diffusion through macropores and mesopores. The Langmuir model fitted well to the experimental adsorption equilibrium data, with q<sub>max</sub> = 80.6 ± 3.4 mg.g<sup>−1</sup>. The adsorption process was favorable, exothermic, and governed by physisorption, involving electrostatic, hydrogen bonding, π–π, and hydrophobic interactions. The binary solvent HCl (0.1 M)/methanol 1:1 <em>v</em>/v was effective for regenerating the adsorbent, with adsorption efficiency greater than 60 % after three cycles of reuse. The study highlights the potential of these macroporous monoliths for the effective removal of antidepressants from aqueous environments.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Biomimetic design of elastomers with improved mechanical properties by integrating hydrogen bonds with covalent crosslinking bonds 通过整合氢键和共价交联键,仿生设计具有更好机械性能的弹性体
IF 4.5 3区 工程技术
Reactive & Functional Polymers Pub Date : 2024-10-10 DOI: 10.1016/j.reactfunctpolym.2024.106068
{"title":"Biomimetic design of elastomers with improved mechanical properties by integrating hydrogen bonds with covalent crosslinking bonds","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106068","DOIUrl":"10.1016/j.reactfunctpolym.2024.106068","url":null,"abstract":"<div><div>It is an important issue for rubber to realize reinforcement and expand application gallery in material science and engineering. In the present work, we initiated a bioinspired design to introduce sacrificial hydrogen bonds by post-modifying sulfur crosslinked carboxyl nitrile rubber with pendent urazole through triazolinedione “click” chemistry. The post-modification of the crosslinked rubber can not only avoid adverse effect of the grafted urazoles on rubber vulcanization, but also enable to evaluate the effect of sacrificial hydrogen bonds on the rubber based on a consistent covalent network. Under external stress, the hydrogen bonds between the urazoles can function as sacrificial bonds that would rupture prior to covalent bonds, during which enormous energy is dissipated and meanwhile facilitates the rubber chain orientation. In light of the unique energy dissipating mechanism, the modulus, ultimate stress, and toughness of the hydrogen bonds and sulfur bonds dual-crosslinked rubber material are improved simultaneously without sacrificing the stretchability, and these properties can be easily manipulated by varying the grafting ratio of urazoles.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142441285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrospun mats from α-amino acid based poly(ester amide)s: A promising material for the prevention of tendon adhesions α-氨基酸基聚(酯酰胺)电纺纤维垫:预防肌腱粘连的理想材料
IF 4.5 3区 工程技术
Reactive & Functional Polymers Pub Date : 2024-10-10 DOI: 10.1016/j.reactfunctpolym.2024.106067
{"title":"Electrospun mats from α-amino acid based poly(ester amide)s: A promising material for the prevention of tendon adhesions","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106067","DOIUrl":"10.1016/j.reactfunctpolym.2024.106067","url":null,"abstract":"<div><div>The occurrence of postoperative tendon adhesions remains a major problem in the clinic and is related to the loss of tendon range of motion and affects patient mobility and comfort. One way to reduce these complications is to use physical barriers between the injury site and the surrounding area. In this study, electrospun mats of poly(ε-caprolactone) (PCL) and L-alanine-based poly(ester amide)s (PEA_ala) is proposed as a possible anti-adhesion physical barrier. Mats with different PCL/PEA_ala ratios and PEAs with different molecular weights were tested. The mats exhibited suitable porosity to allow the passage of albumin, indicating that they are suitable for the exchange of nutrients and cell waste materials. The pore size is in a range below the size of fibroblasts, both in their round and flattened shapes, a critical attribute for interfering with fibroblast entry into the injury site. The <em>in vitro</em> hydrolytic degradation tests showed that the presence of PEAs contributes to an enhanced degradation of the material. In terms of mechanical properties, it was shown that the presence of PEAs contributed to an improvement of these properties in the mats. Additionally, friction tests were carried out and the results showed that the presence of the PEAs in the mats contributed to a decrease in the dynamic friction coefficient. <em>In vitro</em> cytotoxicity tests showed that the mats were not cytotoxic to fibroblasts, but the presence of PEAs led to a decrease in fibroblast adhesion. Overall, the results obtained demonstrate the potential of the developed electrospun mats in preventing tendon adhesions.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preparation of cellulose-based three-network ionic gel and its application in human sensor 纤维素基三网络离子凝胶的制备及其在人体传感器中的应用
IF 4.5 3区 工程技术
Reactive & Functional Polymers Pub Date : 2024-10-09 DOI: 10.1016/j.reactfunctpolym.2024.106064
{"title":"Preparation of cellulose-based three-network ionic gel and its application in human sensor","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106064","DOIUrl":"10.1016/j.reactfunctpolym.2024.106064","url":null,"abstract":"<div><h3>Abstract</h3><div>A lignin-embedded nanocellulose (LCNC) hydrogel, derived from repurposed wheat straw biomass, was fabricated through a ZnCl<sub>2</sub>-mediated soaking process. This innovative hydrogel leverages acrylamide/acrylic acid (AM/AA) monomers as a polymerizable deep eutectic solvent (PDES), enhancing its structural integrity. Notably, the hydrogel exhibits remarkable properties, including a minimal water loss rate of less than 5 %, a peak compressive stress of 0.28 MPa, Young's modulus of 0.015 MPa, a minimum impedance of 500 Ω, and an impressive conductivity of 8.0 × 10<sup>−4</sup> S/m. Furthermore, when integrated into a sensor, it demonstrates a sensitivity factor (GF) of 0.08 KPa<sup>−1</sup>. Selecting this advanced hydrogel as the foundation for a piezoresistive stress sensor, we investigated its capability to detect subtle bodily motions. Our findings underscore the sensor's remarkable versatility; it not only promptly registers significant arm and wrist movements but also meticulously captures delicate throat movements during swallowing, finger flexion, and even the weight distribution when gripping heavier objects. This (PAM-PAA)/LCNC/SA-Zn<sup>2+</sup> hydrogel-based sensor holds immense potential for many applications, including wearable technology, smart devices, health monitoring systems, and human motion recognition platforms. Its ability to accurately track and interpret a range of bodily movements and pressures underscores its significance in advancing the field of personal health tracking and interactive technologies.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
OG-POSS synergistically enhances the corrosion resistance and adhesion property of primer for silicone resin thermal protective coating OG-POSS 可协同增强硅树脂热保护涂层底漆的耐腐蚀性和附着性
IF 4.5 3区 工程技术
Reactive & Functional Polymers Pub Date : 2024-10-09 DOI: 10.1016/j.reactfunctpolym.2024.106066
{"title":"OG-POSS synergistically enhances the corrosion resistance and adhesion property of primer for silicone resin thermal protective coating","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106066","DOIUrl":"10.1016/j.reactfunctpolym.2024.106066","url":null,"abstract":"<div><div>Octaglycidyldimethylsilyl polyhydric silsesquioxane (OG-POSS) in coordination with tetraethyl orthosilicate, tetrapropyl orthosilicate and tetrabutyl orthosilicate mixed solution was applied to the bonding of metal substrate and silicone resin thermal protective coating. The influence of OG-POSS addition on the interface of primer was systematically investigated by means of scanning electron microscope (SEM), salt spray test, thermogravimetric infrared spectroscopy (TGA-IR) and back temperature test. Results showed that the addition of OG-POSS favored the formation of a silane film of the primer, resulting in a more compact and continuous film. At the same time, the silane film had excellent corrosion resistance and adhesion, with a maximum adhesion strength of about 1.42 MPa. In addition, OG-POSS provided a unique Si-O-Si cage structure in the primer, which improved the ablation resistance of the interface layer, preventing the degradation and peeling of the coating in harsh environments.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preparation and performance study of thermo-responsive P(NIPAM-AM-ABP)/keratin composite nanofiber membrane for bio-application 用于生物应用的热响应 P(NIPAM-AM-ABP)/角蛋白复合纳米纤维膜的制备和性能研究
IF 4.5 3区 工程技术
Reactive & Functional Polymers Pub Date : 2024-10-05 DOI: 10.1016/j.reactfunctpolym.2024.106065
{"title":"Preparation and performance study of thermo-responsive P(NIPAM-AM-ABP)/keratin composite nanofiber membrane for bio-application","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106065","DOIUrl":"10.1016/j.reactfunctpolym.2024.106065","url":null,"abstract":"<div><div>This paper describes a temperature-responsive composite nanofibrous membrane by blending of the P(NIPAM-AM-ABP) (PNAA) nanofiber and the wool keratin (WK) nanofiber. The photo crosslinkable PNAA with the LCST value of 38.1 °C was obtained by free radical copolymerization of the temperature sensitive N-Isopropylacrylamide (NIPAM) monomer, the hydrophilic monomer Acrylamide (AM), and the photo crosslinkable monomer 4-Acryloyloxybenzophenone (ABP). Keratin was extracted from waste wool fiber by reduction method. The PNAA nanofiber (PNAA-NF) and the keratin nanofiber (WK-NF) were electoral spun separately by two-needle parallel spinning, and the obtained composite nanofiber membrane was then crosslinked by UV irradiation and heat treatments to prepare the PNAA/WK nanofiber membrane (PNAA/WK-NFM) with good water tolerance. The result indicated that the photo cross-linkable temperature sensitive PNAA with the LCST of 38.1 °C was successfully synthesized. The obtained PNAA/WK-NFM has a good fibrous morphology and excellent water tolerance. The composite nanofiber membrane showed good reversible temperature sensitivity and temperature responsive drug releasing property due to the PNAA. By combining of the PNAA-NF and WK-NF, the mechanical property of the PNAA/WK-NFM was greatly enhanced in both dry and wet states, and the slow drug releasing property of the membrane was further improved. In-vitro cell culture experiments indicated that the PNAA/WK-NFM has a good biocompatibility with no cytotoxicity. These findings suggested that the PNAA/WK-NFM has a potential application in temperature responsive drug releasing biomaterials.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142427753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
“Click”able monomer and polymers based on Azide-functionalized 3,4-Propylenedioxythiophene with tunable processibility 基于具有可调加工性的叠氮功能化 3,4-丙烯二氧噻吩的 "点击 "单体和聚合物
IF 4.5 3区 工程技术
Reactive & Functional Polymers Pub Date : 2024-10-02 DOI: 10.1016/j.reactfunctpolym.2024.106063
{"title":"“Click”able monomer and polymers based on Azide-functionalized 3,4-Propylenedioxythiophene with tunable processibility","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106063","DOIUrl":"10.1016/j.reactfunctpolym.2024.106063","url":null,"abstract":"<div><div>This research introduces 3,3-bis(azidomethyl)-3,4-dihydro-2<em>H</em>-thieno[3,4-<em>b</em>][1,4]dioxepine (ProDOT-AM2) as a versatile building block monomer for the synthesis of variously functionalized monomers and copolymers via “click”able 1,3-dipolar cycloaddition. The efficiency of this building block as a precursor to a wide range of ProDOT-based monomers is demonstrated by click reaction with various alkynes. The 1,3-dipolar cycloaddition of ProDOT-AM2 with different alkynes in the presence of a catalyst yields a novel class of ProDOT derivatives via a “triazole-locker” mechanism. Depending on the bases utilized, two distinct types of functionalized monomers, namely bistriazole and triazole, are obtained. The resulting polymers from the oxidative polymerization of selected monomers exhibit high solution processability and stability under multiple chemical redox processes, demonstrating potential applications in chemical chromics. Additionally, a conjugated copolymer containing ProDOT-AM2 is synthesized via Stille reaction conditions and subsequently post-functionalized with alkynes via a “triazole-locker” mechanism. Characterization studies via IR and <sup>1</sup>H NMR confirm the successful post-functionalization of the polymer. Electropolymerization of ProDOT-AM2 yields an electroactive polymer (PProDOT-AM2), indicating its potential utility in conducting polymers to be further post-functionalized. Overall, this methodology presents a straightforward approach for synthesizing a new class of monomers for conducting polymers and polymer modification using click chemistry.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142427752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis and chemical recycling investigations of polythioureas 聚硫脲的合成和化学回收研究
IF 4.5 3区 工程技术
Reactive & Functional Polymers Pub Date : 2024-09-29 DOI: 10.1016/j.reactfunctpolym.2024.106062
{"title":"Synthesis and chemical recycling investigations of polythioureas","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106062","DOIUrl":"10.1016/j.reactfunctpolym.2024.106062","url":null,"abstract":"<div><div>There is currently intensive research on the development of biobased polymers as potential alternatives to the environmentally hazardous isocyanate-based polyurethanes. In this context, polythioureas (PTUs) form a particularly attractive target because they can be synthesized by using isothiocyanates, a class of molecules that can be found in nature with expected low toxicity. Herein, a series of 16 PTUs with varied chemical structures, mostly being new polymers, have been synthesized and their possible chemical recycling pathways via thermally induced and acid-catalyzed depolymerizations have been investigated. The obtained PTUs showed a varied range of molecular weights (up to M<sub>n</sub> ∼ 69.5 kDa), intrinsic viscosity (up to ∼6 dL/g), and glass transition temperatures (T<sub>g</sub> ∼ 59–128 °C). Notably, we observed that the presence of aromatic segments lowered the thermal stability of the polymers, so they were generally easier to depolymerize (compared to those without aromatic groups), forming oligomers with controlled end-groups (i.e. telechelic polymers) that could be repolymerized. The obtained aliphatic PTUs were generally resistant against thermochemical depolymerizations, but they could be effectively depolymerized by sulfuric acid. The repolymerization methods depended on the end groups of the depolymerized products, which in this work included direct repolymerization of polythioureas (if the end groups contain ∼1:1 of isothiocyanates and amines) and copolymerizations with another monomer terephthaldehyde (if the end groups contain only amines). Our results provided a first comprehensive molecular insight into the synthetic and recycling possibilities of using isothiocyanates and polythioureas in the exploration of potential alternatives for isocyanates and polyurethanes.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142427750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Rh nanoparticles confined in triphenylphosphine oxide-functionalized core-crosslinked micelles with a polyanionic shell: Synthesis, characterization, and application in aqueous biphasic hydrogenation 封闭在具有聚阴离子外壳的三苯基膦氧化物功能化核心交联胶束中的 Rh 纳米粒子:合成、表征及在水性双相氢化中的应用
IF 4.5 3区 工程技术
Reactive & Functional Polymers Pub Date : 2024-09-27 DOI: 10.1016/j.reactfunctpolym.2024.106061
{"title":"Rh nanoparticles confined in triphenylphosphine oxide-functionalized core-crosslinked micelles with a polyanionic shell: Synthesis, characterization, and application in aqueous biphasic hydrogenation","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106061","DOIUrl":"10.1016/j.reactfunctpolym.2024.106061","url":null,"abstract":"<div><div>Core-crosslinked micelles (CCMs) with a hydrophilic polyanionic shell made of poly(sodium styrene sulfonate) chains, P(SS<sup>−</sup>Na<sup>+</sup>), a triphenylphosphine oxide-functionalized polystyrene core (TPPO@PSt) and crosslinked at the inner end of the polystyrene chains by diethylene glycol dimethacrylate (DEGDMA) were synthesized by reversible addition-fragmentation chain-transfer (RAFT) polymerization as a stable TPPO@CCM-A latex. One-pot synthesis of rhodium nanoparticles (RhNPs) by the reduction of [Rh(COD)(<em>μ</em>-Cl)]<sub>2</sub> in the aqueous TPPO@CCM-A latex yielded a stable RhNP-TPPO@CCM-A latex without the need of additional stabilizer or base. This Rh-loaded latex was applied to the catalytic biphasic hydrogenation of styrene under mild conditions with complete selectivity towards ethylbenzene and corrected turnover frequencies (<em>c</em>TOFs) ranging from 3250 to 10,010 h<sup>−1</sup> based on the surface atoms of the RhNPs. Importantly, the catalytic phase proved recyclable after product extraction, owing to the efficient retention of the RhNPs by the core TPPO ligands.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142427751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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