Reactive & Functional Polymers最新文献_第10页

Dual-responsive, highly bacteriostatic and swellable chitosan-based hydrogels loaded with 5-fluorouracil for sustainable release 载入 5-氟尿嘧啶的双响应、高抑菌性和可溶胀壳聚糖基水凝胶可实现持续释放

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-06-20 DOI: 10.1016/j.reactfunctpolym.2024.105992

Yaxue Xie , Pingxiong Cai , Huining Xiao , Yuanfeng Pan

{"title":"Dual-responsive, highly bacteriostatic and swellable chitosan-based hydrogels loaded with 5-fluorouracil for sustainable release","authors":"Yaxue Xie , Pingxiong Cai , Huining Xiao , Yuanfeng Pan","doi":"10.1016/j.reactfunctpolym.2024.105992","DOIUrl":"https://doi.org/10.1016/j.reactfunctpolym.2024.105992","url":null,"abstract":"<div><p>In this work, a dual-responsive hydrogel for sustainable release of drug was prepared using chitosan grafted with PBA as substrate to form semi-interpenetrating polymer networks (S-IPN) via free-radical crosslinking polymerization of acrylic acid in the presence of MBAA as a crosslinker and KPS as an initiator as well as Fe<sup>3+</sup>.ions introduced. The results from comprehensive characterization indicated that the as-prepared hydrogel possesses cavity structure with the pores of varying sizes, thus facilitating the accommodation of 5-fluorouracil as a model drug. In addition, the swelling behavior of the hydrogels in different pH buffers and glucose solutions was also investigated. As expected, the prepared hydrogels are pH and glucose responsive due to PAA and phenylboronic acid incorporated into the hydrogel, which enables the slow or sustainable release of drug. Moreover, the release processes were fitted with various kinetic models whereas the release was better described by Korsmeyer-Peppas model or the drug release is mainly governed by the release mechanism of the hydrogel is primarily driven by Fickian diffusion from a mechanical point of view. Hydrogel loaded with drug was found to have good antibacterial effects against <em>E. coli</em> and <em>S. aureus,</em> leading to the potential for various medical-related applications.</p></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"202 ","pages":"Article 105992"},"PeriodicalIF":4.5,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141486449","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

Poly(lactic acid)/polycaprolactone-based self-programmed photothermal responsive shape memory polymers 基于聚（乳酸）/聚己内酯的自编程光热响应形状记忆聚合物

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-06-17 DOI: 10.1016/j.reactfunctpolym.2024.105990

Lijie Huang , Yao Sheng , Qi Mo , Shuya Zhang , Yuluo Zheng , Beiwei Wang , Chongxing Huang , Qingshan Duan , Hui Zhao

{"title":"Poly(lactic acid)/polycaprolactone-based self-programmed photothermal responsive shape memory polymers","authors":"Lijie Huang , Yao Sheng , Qi Mo , Shuya Zhang , Yuluo Zheng , Beiwei Wang , Chongxing Huang , Qingshan Duan , Hui Zhao","doi":"10.1016/j.reactfunctpolym.2024.105990","DOIUrl":"https://doi.org/10.1016/j.reactfunctpolym.2024.105990","url":null,"abstract":"<div><p>Shape memory polymers, based on their unique property that they can automatically revert to their original shape after deformation when subjected to external stimuli, have shown great application prospects and practical value in many fields such as aerospace, automotive and biomedical in recent years. In this study, poly(lactic acid) (PLA)/polycaprolactone (PCL) is used as a substrate, and a graft product, PLA-g-GMA, is prepared by grafting glycidyl methacrylate (GMA) onto PLA as a compatibilizer, and then polymer substrates are prepared by melt extrusion. Then, light-responsive shape memory composites are prepared by loading polypyrrole (PPy) nanoparticles with photothermal conversion functionality into the PLA/PCL substrate, and PPy-coated NdFeB (PPy@NdFeB) is used as the functional phase to prepare auto-responsive shape memory polymers that can be programmed automatically. Among them, the PLA/PCL/PPy composites show shape recovery rate (R<sub>r</sub>) and shape fixation rate (R<sub>f</sub>) of 81.11% and 98.87%, respectively, at a strain of 85.27% under the programming conditions of a deformation temperature of 65 °C and a stress of 2.14 MPa. The PLA/PCL/PPy@NdFeB composite material, in addition to excellent double and triple shape memory behavior, also has obvious magnetic properties, which can be used to carry out self-programmed temporary shapes. This research aims to solve the limitations of temperature-responsive shape memory polymers in a single stimulus response mode, broaden their application scope, further promote the development of shape memory polymers, and provide realistic guidance for the field of 4D printing.</p></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"202 ","pages":"Article 105990"},"PeriodicalIF":4.5,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141444434","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

Esterification modified corn starch composite with chitosan and PVP for enhanced mechanical properties and antimicrobial freshness preservation of starch-based films 壳聚糖和 PVP 与玉米淀粉的酯化改性复合材料可提高淀粉基薄膜的机械性能和抗菌保鲜性能

IF 5.1 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-06-17 DOI: 10.1016/j.reactfunctpolym.2024.105991

Dequan Wei , Shenghua Lv , Jinru Liu , Jingjing Zuo , Yanlu Mu , Leipeng Liu , Tingxiang He , Qiao Zeng

{"title":"Esterification modified corn starch composite with chitosan and PVP for enhanced mechanical properties and antimicrobial freshness preservation of starch-based films","authors":"Dequan Wei , Shenghua Lv , Jinru Liu , Jingjing Zuo , Yanlu Mu , Leipeng Liu , Tingxiang He , Qiao Zeng","doi":"10.1016/j.reactfunctpolym.2024.105991","DOIUrl":"https://doi.org/10.1016/j.reactfunctpolym.2024.105991","url":null,"abstract":"<div><p>Traditional plastic packaging films may bring convenience to people, but may also bring fossil energy shortage and pollution problems. Thus, it is of great research significance to use renewable resources to develop biodegradable green packaging materials instead of traditional petroleum-based film materials. In this study, aryl esterified starch was prepared by graft modification of corn starch using acryloyl esterification. Then ES/CS/PVP composite film materials were prepared by introducing chitosan and polyvinylpyrrolidone (PVP) from esterified starch. Chitosan and PVP were introduced to greatly improve the antimicrobial and mechanical properties of the composite film. And the chemical structure and microscopic morphology of ES/CS/PVP were characterised by FT-IR, XRD, SEM and XPS. The results showed that the ES/CS/PVP composite film had excellent tensile properties and good antimicrobial freshness preservation properties. The maximum tensile strength reached 51.69 MPa and the water vapour permeability was 4.76 × 10<sup>−5</sup> g/mm∙d. The results of antimicrobial freshness preservation experiments show that the composite film has excellent antimicrobial freshness preservation performance, enough to keep cherries with good freshness in 6 days.</p></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"202 ","pages":"Article 105991"},"PeriodicalIF":5.1,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141429767","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

Meldrum's acid-functionalized bismaleimide, polyaspartimide and their thermally crosslinked resins: Synthesis and properties 梅尔德伦酸官能化双马来酰亚胺、聚天冬氨酰亚胺及其热交联树脂：合成与性能

IF 5.1 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-06-15 DOI: 10.1016/j.reactfunctpolym.2024.105988

Chao-Chun Hsiao, Jia-Jun Lee, Ying-Ling Liu

引用次数: 0

Facile preparation and application of ternary hybrid of POSS/DOPO/F macromolecular as highly-effective epoxy modifier 作为高效环氧改性剂的 POSS/DOPO/F 大分子三元杂化物的简便制备和应用

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-06-15 DOI: 10.1016/j.reactfunctpolym.2024.105989

Yongming Chen , Shunwei Wu , Lu Li , Birong Zeng , Kaibin He , Weiang Luo , Yiting Xu , Conghui Yuan , Lizong Dai

{"title":"Facile preparation and application of ternary hybrid of POSS/DOPO/F macromolecular as highly-effective epoxy modifier","authors":"Yongming Chen , Shunwei Wu , Lu Li , Birong Zeng , Kaibin He , Weiang Luo , Yiting Xu , Conghui Yuan , Lizong Dai","doi":"10.1016/j.reactfunctpolym.2024.105989","DOIUrl":"10.1016/j.reactfunctpolym.2024.105989","url":null,"abstract":"<div><p>In order to easily achieve the multifunctionality of epoxy resin, this paper designs and synthesizes a ternary hybrid copolymer containing POSS/DOPO/F. This method not only facile combines POSS with DOPO, but also introduces F element to further reduce the surface energy of epoxy composite materials. Research has found that the POSS/DOPO/F ternary hybrid copolymer can achieve a UL-94 flame retardant rating of V-0 with just 5 wt% of the modifier, and the limit oxygen index of epoxy composites is 32% (23.1% higher than pure epoxy resin). The residual char after combustion is denser and the carbonization rate is higher. Furthermore, we conducted an in-depth analysis of the flame retardant mechanism of POSS/DOPO/F ternary hybrid copolymer epoxy composites using TGA-FTIR technology and EDS. In addition, the introduction of ternary hybrid polymers effectively improves the mechanical properties of epoxy composite materials and significantly reduces the surface energy of the composite materials.</p></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"202 ","pages":"Article 105989"},"PeriodicalIF":4.5,"publicationDate":"2024-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141410134","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

The super-fast synthesis of high-strength epoxy adhesives by UV-initiated frontal polymerization at room temperature 室温下通过紫外线引发的正面聚合超快速合成高强度环氧树脂粘合剂

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-06-14 DOI: 10.1016/j.reactfunctpolym.2024.105987

Jiongfeng Sun , Yi Hong , Guofu Qiao

引用次数: 0

Diels-Alder-imprinted furan-thiosemicarbazide sorbents for selective removal of cadmium (II) ions 用于选择性去除镉 (II) 离子的 Diels-Alder-imprinted furan-thiosemicarbazide 吸附剂

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-06-13 DOI: 10.1016/j.reactfunctpolym.2024.105963

Rua B. Alnoman , Majed S. Aljohani , Hussam Y. Alharbi , Nadia H. Elsayed , M. Monier

{"title":"Diels-Alder-imprinted furan-thiosemicarbazide sorbents for selective removal of cadmium (II) ions","authors":"Rua B. Alnoman , Majed S. Aljohani , Hussam Y. Alharbi , Nadia H. Elsayed , M. Monier","doi":"10.1016/j.reactfunctpolym.2024.105963","DOIUrl":"10.1016/j.reactfunctpolym.2024.105963","url":null,"abstract":"<div><p>The exploration of removing heavy metals from water solutions with specific sorbents is a compelling research area. However, the selectivity of these sorbents towards particular metals is limited. To address this, an innovative furan-thiosemicarbazide-based chelating polymer within a poly(acrylonitrile-<em>co</em>-divinylbenzene) framework (FTC<img>P), has been synthesized. This new polymer demonstrates a high selectivity for capturing Cd<sup>2+</sup> ions. To further enhance its performance, the polymer was cross-linked with a bis(maleimido)ethane (BME) through a Diels-Alder reaction, effectively embedding the Cd<sup>2+</sup> ions within its structure, resulting in a ion-imprinted material (Cd-II-P) after elution with EDTA and nitric acid. The development and modification of this polymer were meticulously verified using FTIR and NMR spectroscopy, while the chelation efficiency for Cd<sup>2+</sup> was evaluated through XPS and FTIR analysis. Additionally, the sorbent's surface characteristics were examined via SEM, revealing the polymer's morphology. Notably, the Cd-II-P variant exhibited superior specificity for Cd<sup>2+</sup> ions compared to other metals, with the most effective adsorption occurring at a pH of 5. This sorbent reached an adsorption capacity of 341 mg/g, aligning with the Langmuir adsorption isotherm model and adhering to a pseudo-second-order kinetics model in its adsorption process.</p></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"202 ","pages":"Article 105963"},"PeriodicalIF":4.5,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141391270","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

Polymerization behaviors and branching structural analysis of branched polymers in self-condensing atom transfer radical copolymerization of different inimers 不同嵌段自冷凝原子转移自由基共聚过程中支化聚合物的聚合行为和支化结构分析

IF 5.1 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-06-13 DOI: 10.1016/j.reactfunctpolym.2024.105983

Xiaoqiang Xue , Mingjian Feng , Yangjing Chen , Hongting Pu , Wenyan Huang , Hongjun Yang , Li Jiang , Qimin Jiang , Bibiao Jiang , Sridhar Komarneni

{"title":"Polymerization behaviors and branching structural analysis of branched polymers in self-condensing atom transfer radical copolymerization of different inimers","authors":"Xiaoqiang Xue , Mingjian Feng , Yangjing Chen , Hongting Pu , Wenyan Huang , Hongjun Yang , Li Jiang , Qimin Jiang , Bibiao Jiang , Sridhar Komarneni","doi":"10.1016/j.reactfunctpolym.2024.105983","DOIUrl":"10.1016/j.reactfunctpolym.2024.105983","url":null,"abstract":"<div><p>The investigation of the relationship between the structure and properties of branched polymers heavily relies on the branched morphology. In this study, we explored the electron-rich and electron-poor effects that arise from different types of double bonds in inimers using self-condensing atom transfer radical polymerization (ATRP). A comparative analysis of polymerization systems using various inimers as branching monomers revealed notable differences. Specifically, when examining styrene-based initiator (St-inimer) systems, the absence of a discernible nucleation feature and the non-conformance to the “core-first-arm-later” method for synthesizing <em>star</em>-shaped polystyrene (branching morphology factor <em>ε</em> is higher than 1.0) were observed. On the other hand, the methacrylate-based initiator (MA-inimer) systems exhibited a clear nucleation process during polymerization, followed by linear molecular weight growth and a constant polydispersity characteristic, consistent with the “core-first-arm-later” approach for synthesizing <em>star</em>-shaped polystyrene (<em>ε</em> is about 0.6, lower than 1.0). The maleimide-based initiator (Mal-inimer) systems demonstrated an initial nucleation phase, a mid-stage linear growth phase with a constant polydispersity characteristic, and a late-stage nonlinear growth phase resulting in a broader polydispersity index. As a result, the polymerization process in maleimide-based initiator systems conforms to the law of preparing star branched polymers with multi-core structures (<em>ε</em> is about 0.8).</p></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"202 ","pages":"Article 105983"},"PeriodicalIF":5.1,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141397456","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

Reprocessing, shape recovery and dielectric properties of nanocomposites of Polyhydroxyurethane with barium Titanate 聚羟基聚氨酯与钛酸钡纳米复合材料的再加工、形状恢复和介电性能

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-06-12 DOI: 10.1016/j.reactfunctpolym.2024.105986

Muhammad Usman Saeed, Guohua Hang, Yuan Gao, Jiawei Hu, Lei Li, Tao Zhang, Sixun Zheng

{"title":"Reprocessing, shape recovery and dielectric properties of nanocomposites of Polyhydroxyurethane with barium Titanate","authors":"Muhammad Usman Saeed, Guohua Hang, Yuan Gao, Jiawei Hu, Lei Li, Tao Zhang, Sixun Zheng","doi":"10.1016/j.reactfunctpolym.2024.105986","DOIUrl":"10.1016/j.reactfunctpolym.2024.105986","url":null,"abstract":"<div><p>Poly(N-vinyl pyrrolidone) (PVPy) chains were grafted onto the surfaces of barium titanate (BaTiO<sub>3)</sub> nanoparticles <em>via</em> the surface-initiated living/controlled radical polymerization of N-vinyl pyrrolidone. The PVPy-grafted BaTiO<sub>3</sub> nanoparticles were then incorporated into a crosslinked polyhydroxyurethane (PHU) which was derived from bis(six-membered) cyclic carbonate and a triamine (<em>i.e.,</em> Jeffamine T400). It was found that BaTiO<sub>3</sub> nanoparticles were uniformly dispersed into the PHU matrix. The generation of nanocomposites resulted that the glass transition temperatures (<em>T</em><sub>g</sub>’s) and mechanical properties were significantly enhanced. In the meantime, the nanocomposites had the dielectric properties superior to control PHU; the shape memory properties of the materials were significantly improved in terms of response, fixity of transient shape and recovery of the original shapes. Thanks to transcarbamoylation of hydroxyurethane structural units, the crosslinked nanocomposites can be reprocessed at elevated temperature. It was found that dibutyltin dilaurate (DBTDL) was an effective catalyst to decrease the Arrhenius activation energy of the dynamic reaction; the reprocessing of the nanocomposites can be carried out at the temperature as low as 120 °C.</p></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"202 ","pages":"Article 105986"},"PeriodicalIF":4.5,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141403637","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

An asymmetric super-wetting Janus PVDF oil-water separation membrane fabricated by a simple method on a non-woven substrate 用简单方法在无纺基材上制造出非对称超润湿 Janus PVDF 油水分离膜

IF 5.1 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-06-10 DOI: 10.1016/j.reactfunctpolym.2024.105982

Jikui Wang, Yuwei Feng, Yicheng Huang, Xinquan Zou, Yi Zhang, Wenxiu Liu, Kun Wang

{"title":"An asymmetric super-wetting Janus PVDF oil-water separation membrane fabricated by a simple method on a non-woven substrate","authors":"Jikui Wang, Yuwei Feng, Yicheng Huang, Xinquan Zou, Yi Zhang, Wenxiu Liu, Kun Wang","doi":"10.1016/j.reactfunctpolym.2024.105982","DOIUrl":"https://doi.org/10.1016/j.reactfunctpolym.2024.105982","url":null,"abstract":"<div><p>Membrane separation technology is an important method of treating oily wastewater with great potential for development. However, preparation of membranes for efficiently separating complex oil-water mixtures continues to be challenging. In this study, a strategy for efficient construction of asymmetric wetting surfaces was designed, and successfully prepared an asymmetric super wetting Janus polyvinylidene fluoride (PVDF) modified separation membrane to separate complex oil-water emulsion. The composite PVDF membrane was prepared using a non-woven fabric substrate and phase conversion method. Subsequently, composite membrane was rapidly hydrophilic modified on one side using tannic acid and 3-aminopropyltriethoxysilane under the strong oxidizing effect of oxidant sodium periodate. Then non-woven fabric substrate was peeled off to obtain a Janus PVDF modified separation membrane. The front and back sides of the separation membrane have highly asymmetric micromorphology and wettability. The front side has hydrophilic/underwater oleophobic wettability (with a water contact angle of 31°). The separation efficiency of oil-in-water emulsion is up to 99.5%, while the back side has super lipophilic/underoil hydrophobic wettability (with a water contact angle of 131°). The separation efficiency of water-in-oil emulsion is up to 98.6%, improving the efficiency of oil in water separation and application range.</p></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"202 ","pages":"Article 105982"},"PeriodicalIF":5.1,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141314518","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