Reactive & Functional Polymers最新文献

Flame retardant polymethyl methacrylate toughened by a phosphorus-containing vitrimer 由含磷玻璃聚合物增韧的阻燃聚甲基丙烯酸甲酯

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-11-15 DOI: 10.1016/j.reactfunctpolym.2024.106104

Di Zhang , Yingke Zhu , Weihong Cao , Jinquan Chen , Zhenghong Guo , Zhengping Fang , Juan Li

引用次数: 0

Improving the stability and digestive property of Bifidobacterium bifidum encapsulated in whey protein isolate/pectin emulsions 提高乳清蛋白分离物/pectin乳剂中包裹的双歧杆菌的稳定性和消化性能

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-11-14 DOI: 10.1016/j.reactfunctpolym.2024.106100

Yuhang Cao, Lingyu Yin, Meihui Wang, Fei Li, Baohua Kong, Qian Liu, Fangda Sun, Hui Wang

{"title":"Improving the stability and digestive property of Bifidobacterium bifidum encapsulated in whey protein isolate/pectin emulsions","authors":"Yuhang Cao, Lingyu Yin, Meihui Wang, Fei Li, Baohua Kong, Qian Liu, Fangda Sun, Hui Wang","doi":"10.1016/j.reactfunctpolym.2024.106100","DOIUrl":"10.1016/j.reactfunctpolym.2024.106100","url":null,"abstract":"<div><div><em>Bifidobacterium bifidum</em> (<em>B. bifidum</em>) is considered as one of the most important intestinal probiotics for its health benefits. However, the survival of <em>B. bifidum</em> is typically hindered by a number of factors, including pH and heating, which constrains the potential applications of <em>B. bifidum</em> in food products and the realization of its beneficial effects. In this study, <em>B. bifidum</em> was encapsulated in emulsions prepared from whey protein isolate (WPI) and pectin. The microscopic morphology of the emulsions was observed by Cryo-scanning electron microscopy (Cryo-SEM) and transmission electron microscopy (TEM) as well as ultra-high resolution microscopy (URM). The pH, ionic strength, and thermal stability of the emulsions are recorded best on 2 % pectin concentration as compared to 1 % or 3 %. The viability of <em>B. bifidum</em> is enhanced by encapsulation in emulsion after <em>in vitro</em> digestion compared to free <em>B. bifidum</em>. The findings indicate that emulsion encapsulation can be an effective method for maintaining the activity of probiotics, which could be a valuable approach for developing orally consumed probiotic foods.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"206 ","pages":"Article 106100"},"PeriodicalIF":4.5,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142660587","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}

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Radical inhibition in tomographic volumetric 3D printing for thiol-Ene photoresists: From Photorheology to printability 硫醇-烯类光刻胶在断层体积三维打印中的辐射抑制作用：从光流变学到可打印性

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-11-09 DOI: 10.1016/j.reactfunctpolym.2024.106096

Quinten Thijssen , Antonio Jaén Ortega , Roniérik Pioli Vieira , Sandra Van Vlierberghe

{"title":"Radical inhibition in tomographic volumetric 3D printing for thiol-Ene photoresists: From Photorheology to printability","authors":"Quinten Thijssen , Antonio Jaén Ortega , Roniérik Pioli Vieira , Sandra Van Vlierberghe","doi":"10.1016/j.reactfunctpolym.2024.106096","DOIUrl":"10.1016/j.reactfunctpolym.2024.106096","url":null,"abstract":"<div><div>The introduction of tomographic volumetric 3D printing is revolutionizing the manufacturing and bioprinting landscape by enabling the rapid creation of complex three-dimensional (biological) structures with high precision down to 20 μm. Despite the recognized role of radical inhibition in volumetric 3D printing, a study of inhibition has remained elusive. Here, A comprehensive framework is presented to study the role of the widely reported radical inhibitor TEMPO in the volumetric 3D printability of a thiol-ene photocrosslinkable photoresist composed of triallyl isocyanurate (TTT) and pentaerythritol tetrakis(3-mercaptopropionate) (PETMP). Through photorheological measurements, kinetic modeling, FTIR spectroscopy, and validation via volumetric 3D printing, the relationship between inhibitor concentrations, the evolution of the shear moduli as well as the conversion as a function of light dose, and volumetric 3D printing is elucidated. The findings in this study provide a robust methodology for predicting optimal printing conditions of photoresists for tomographic volumetric 3D printing, obviating the need for extensive trial-and-error.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"205 ","pages":"Article 106096"},"PeriodicalIF":4.5,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142653546","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

Shape memory, reprocessable and photothermal networks of polyurethane with silyl ether bonds and croconaine segments 具有硅醚键和黄腐酸段的聚氨酯形状记忆、可再加工和光热网络

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-11-08 DOI: 10.1016/j.reactfunctpolym.2024.106098

Jiawei Hu, Guohua Hang, Jianglu Teng, Xibin Shen, Yuan Gao, Lei Li, Sixun Zheng

{"title":"Shape memory, reprocessable and photothermal networks of polyurethane with silyl ether bonds and croconaine segments","authors":"Jiawei Hu, Guohua Hang, Jianglu Teng, Xibin Shen, Yuan Gao, Lei Li, Sixun Zheng","doi":"10.1016/j.reactfunctpolym.2024.106098","DOIUrl":"10.1016/j.reactfunctpolym.2024.106098","url":null,"abstract":"<div><div>Organic dyes were integrated into networks of polyurethane (PU) in the form of croconaine segments, in order to bestow photothermal properties on the materials. In addition, the PU networks were crosslinked with polysilsesquioxane (PSSQ) so that the materials can be reprocessed (or self-healing) <em>via</em> the metathesis of silyl ether bonds under catalysis. Toward this end, we synthesized a novel diol bearing croconaine moiety, which was used as one of chain extenders and a series of linear PU telechelics with dihydroxyl termini were synthesized. The α,ω-dihydroxyl PU telechelics were then allowed to react with 3-isocyanatopropyltriethoxysilane to gain α,ω-ditriethoxysilane PU telechelics. Through sol-gel process, α,ω-ditriethoxysilane PU telechelics readily underwent crosslinking with PSSQ as the crosslinkages. The crosslinking of PU was in marked contrast to traditional crosslinking of PU with multifunctional ols (or amines) as the crosslinkers. Owing to the crosslinking, shape memory properties were bestowed on the organic-inorganic PU networks. Thanks to the metathesis of silyl ether bonds under catalysis, the organic-inorganic PU networks were reprocessable (or recyclable). Benefiting from the built-in of dye segments, the PU networks significantly displayed excellent photothermal conversion properties. By leveraging the photothermal properties, the shape shifting of the PU networks can be triggered <em>via</em> the irradiation under infrared laser and in a non-contact fashion. In addition, the PU networks were capable of displaying the light-triggered self-healing properties. Thanks to these excellent properties, we demonstrated a successful application of the PU networks a soft robot.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"205 ","pages":"Article 106098"},"PeriodicalIF":4.5,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142653550","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}

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Use of a hydrosilylation reaction for the preparation of structure-controlled boroxine-based polyborosiloxanes 利用氢硅烷化反应制备结构受控的硼氧烷基聚硼硅氧烷

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-11-08 DOI: 10.1016/j.reactfunctpolym.2024.106094

Elizaveta A. Manokhina , Rinat S. Tukhvatshin , Dmitriy A. Khanin , Inga V. Frank , Viktor G. Vasil'ev , Anton A. Anisimov

{"title":"Use of a hydrosilylation reaction for the preparation of structure-controlled boroxine-based polyborosiloxanes","authors":"Elizaveta A. Manokhina , Rinat S. Tukhvatshin , Dmitriy A. Khanin , Inga V. Frank , Viktor G. Vasil'ev , Anton A. Anisimov","doi":"10.1016/j.reactfunctpolym.2024.106094","DOIUrl":"10.1016/j.reactfunctpolym.2024.106094","url":null,"abstract":"<div><div>The structure of organosilicon vinyl-containing boroxine was confirmed by <sup>1</sup>H nuclear magnetic resonance (NMR) spectroscopy, infrared (IR) spectroscopy and matrix-assisted laser desorption/ionization (MALDI) mass spectrometry. Its thermal properties were studied using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) methods. The ability of boroxine to undergo hydrosilylation using the Karstedt's catalyst was investigated on various organosilicon substrates. Boroxine was shown to be involved in these reactions as a cross-linking agent. The formation of dynamic boroxine cross-links allowed the analysis of the reaction products by NMR spectroscopy, including the use of polyfunctional hydride-containing reagents. In all cases the addition proceeds selectively to the β-position and with complete conversion. The structure of the resulting polyborosiloxane containing 1.4 mol% of modified units was also confirmed by <sup>1</sup>H NMR spectroscopy, and its thermal and rheological properties were studied.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"205 ","pages":"Article 106094"},"PeriodicalIF":4.5,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142653551","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 modified cellulose/PBAT films and its application in food preservation 改性纤维素/PBAT 薄膜的制备及其在食品保鲜中的应用

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-11-07 DOI: 10.1016/j.reactfunctpolym.2024.106097

Yonghua Xue , Kui Tang , Xiaoyuan Liao

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Rubber-assisted and modulated epoxy topological network for developing fatigue-resistant, high-strain-cycle high performance shape memory polymer composites 用于开发抗疲劳、高应变循环高性能形状记忆聚合物复合材料的橡胶辅助和调制环氧拓扑网络

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-11-07 DOI: 10.1016/j.reactfunctpolym.2024.106095

Yiyuan Sun , Zenghui Yang , Liming Tao , Qihua Wang , Xinrui Zhang , Yaoming Zhang , Tingmei Wang

{"title":"Rubber-assisted and modulated epoxy topological network for developing fatigue-resistant, high-strain-cycle high performance shape memory polymer composites","authors":"Yiyuan Sun , Zenghui Yang , Liming Tao , Qihua Wang , Xinrui Zhang , Yaoming Zhang , Tingmei Wang","doi":"10.1016/j.reactfunctpolym.2024.106095","DOIUrl":"10.1016/j.reactfunctpolym.2024.106095","url":null,"abstract":"<div><div>High performance shape memory polymer (HPSMP) has a wide range of application such as smart device, smart mold. In this study, we designed a rigid-flexible shape memory epoxy with flexible chain segment as the main chain and rigid benzene ring as the side group. Meanwhile, carboxyl-terminated nitrile butadiene rubber (CTBN) was accessed into the epoxy main chain as a fatigue-resistant functional filler. The results showed that the flexible backbone plays a major role in improving the ductility. The superior fatigue-resistant shape memory cycling performance was synergistically achieved by modulating the epoxy topological network through altering the disulfide cross-linker prompted by CTBN, and the materials exhibited good high and low-temperature resistant mechanical properties. Comparatively, it is found that disulfide bonding can significantly improve the tensile property and thermal stability for epoxy. The synergistic effect between the elastic chain segments in CTBN and the flexible backbone achieves excellent shape recovery ratio. Therefore, the rational structural design provides an effective way to develop HPSMP, which can expand the application areas for HPSMP.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"205 ","pages":"Article 106095"},"PeriodicalIF":4.5,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142653552","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

Biocidal polymer coatings based on porphyrin-modified epoxy-amine networks 基于卟啉改性环氧胺网络的杀菌聚合物涂层

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-11-07 DOI: 10.1016/j.reactfunctpolym.2024.106099

A.M. Tsyklinskaya , D.A. Polivanovskaia , N.E. Grammatikova , E.S. Zhavoronok , K.P. Birin , I.N. Senchikhin

{"title":"Biocidal polymer coatings based on porphyrin-modified epoxy-amine networks","authors":"A.M. Tsyklinskaya , D.A. Polivanovskaia , N.E. Grammatikova , E.S. Zhavoronok , K.P. Birin , I.N. Senchikhin","doi":"10.1016/j.reactfunctpolym.2024.106099","DOIUrl":"10.1016/j.reactfunctpolym.2024.106099","url":null,"abstract":"<div><div>For the first time, a pronounced biocidal activity of modified polymers with a porphyrin content of 21.4 μM (0.002 wt%) against <em>Staphylococcus aureus</em> was demonstrated. In order to develop new biocidal polymer coatings, a study was carried out on diglycidyl ether of bisphenol A (DGEBA) and porphyrin-modified oligomeric diamine systems. The study investigated the solubility of porphyrins in oligomers through experimental and theoretical means, using Van Krevelen's approach of additive group contributions. Fully cured epoxy-amine polymer materials modified with varied free-base tetraarylporphyrins were obtained. The materials were studied by means of thermogravimetry, differential scanning calorimetry, UV–Vis and fluorescence spectroscopy. The proposed approach to the formation of modified epoxy-amine materials allows preservation of the photophysical properties of porphyrins, including their photostability. The addition of modifiers in 4.28–21.4 μM range of concentrations makes it possible to keep the thermophysical and thermochemical properties of the polymer matrix.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"205 ","pages":"Article 106099"},"PeriodicalIF":4.5,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142653545","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

Analysis of bio-based epoxy resins: Impact of amine hardeners on thermal, thermomechanical, optical and electrical properties of epoxidized resveratrol with high Tg 生物基环氧树脂分析：胺类固化剂对高 Tg 环氧化白藜芦醇的热、热机械、光学和电学特性的影响

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-11-04 DOI: 10.1016/j.reactfunctpolym.2024.106080

Isaac Isarn , Ignacio Collado , Alberto Jiménez-Suárez , Silvia G. Prolongo

{"title":"Analysis of bio-based epoxy resins: Impact of amine hardeners on thermal, thermomechanical, optical and electrical properties of epoxidized resveratrol with high Tg","authors":"Isaac Isarn , Ignacio Collado , Alberto Jiménez-Suárez , Silvia G. Prolongo","doi":"10.1016/j.reactfunctpolym.2024.106080","DOIUrl":"10.1016/j.reactfunctpolym.2024.106080","url":null,"abstract":"<div><div>Epoxidized resveratrol (RES) has been cured with different amines in order to compare their possibilities to obtain high-temperature resistance of bio-based epoxy resins. Materials obtained from the bio-based monomer present glass transition temperatures (T<sub>g</sub>) among the highest ever reported for an epoxy-amine curing system, with extremely high char residue, making them excellent candidates for extremely high-temperature applications. Particularly, epoxidized RES stoichiometrically cured with 4,4′-sulfonyldianiline (DDS) reached 297 °C, measured as the tan <em>δ</em> peak by DMTA, and two other materials, using 4,4′-methylenedianiline (DDM) and 4,4′-diaminodicyclohexylmethane (CAA) as curing agents, exceeded 300 °C. In fact, the material begins to degrade before the chains are fully relaxed, so they are thermosetting that never go completely into the rubbery state. Additionally, this resin improves the direct current (DC) insulating character (∼10<sup>15</sup> Ωcm) while decreasing the optical band gap (∼2 eV) when compared to other epoxy resins available, which is of great interest for photovoltaic applications. Moreover, some of the materials presented a very high char residue proportion when heated (>40 wt% at 800 °C under nitrogen atmosphere), presenting good fire-retardant properties.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"205 ","pages":"Article 106080"},"PeriodicalIF":4.5,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142653541","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}

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Thiolated RAFT-PISA nano-templates power on luminescent copper nanoclusters (CuNCs) for selective mercury (II) detection 发光纳米铜簇 (CuNC) 上的硫醇化 RAFT-PISA 纳米模板用于选择性汞 (II) 检测

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-11-04 DOI: 10.1016/j.reactfunctpolym.2024.106084

Olga García, Isabel Quijada-Garrido

{"title":"Thiolated RAFT-PISA nano-templates power on luminescent copper nanoclusters (CuNCs) for selective mercury (II) detection","authors":"Olga García, Isabel Quijada-Garrido","doi":"10.1016/j.reactfunctpolym.2024.106084","DOIUrl":"10.1016/j.reactfunctpolym.2024.106084","url":null,"abstract":"<div><div>In this study, we expand the scope of polymerization-induced self-assembly (PISA) by modifying one of the most prototypical copolymers derived from RAFT-mediated PISA, poly(glycerol methacrylate)-<em>b</em>-poly(hydroxypropyl methacrylate) (pGMA-<em>b</em>-pHPMA), by incorporating a comonomer with a protected thiol group-2-(acetylthio)ethyl methacrylate (AcSEMA) into the hydrophobic block. The photoinitiated synthesis of pGMA-<em>b</em>-p(HPMA-<em>co</em>-AcSEMA) was conducted in a water/ethanol mixture (60/40 <em>v</em>/v) to increase the solubility of AcSEMA. Thus, this modification enabled the formation of diverse polymeric nano-morphologies such as spheres, worms, and vesicles, dictated by the balance between hydrophilic and hydrophobic block ratios and the AcSEMA content. Besides, the strong metal affinity of thiol groups makes the incorporation of AcSEMA into self-assembled nanostructures a versatile platform for generating advanced hybrid materials with potential applications in biomedicine, sensing, catalysis, or water purification. As evidenced in this work, the post-hydrolysis of the thioacetate group into thiol allowed the use of polymeric nano-objects as templates to power on the luminescenece of functionalized copper nanoclusters (CuNCs). These polymeric CuNCs, composed of several to hundreds of copper atoms, exhibit remarkable red emission, positioning the synthesized hybrids as promising luminescent probes for the development of highly selective “switch-off” luminescent sensors for Hg<sup>2+</sup> detection. This work paves the way for the design of multifunctional hybrid nanomaterials with advanced applications.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"205 ","pages":"Article 106084"},"PeriodicalIF":4.5,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142653542","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