Macromolecular Research最新文献

{"title":"Wood polymer composite (WPC) formulation from Ethiopian indigenous lowland bamboo particles and post-consumer plastic blends: synergetic and dual effects of both coupling agent and organic crosslinking catalyst","authors":"Keresa Defa Ayana,&nbsp;Jong-Man Yoo,&nbsp;Woohong Jeon,&nbsp;Kyung Man Choi,&nbsp;Chang-Sik Ha,&nbsp;Abubeker Yimam Ali","doi":"10.1007/s13233-024-00347-6","DOIUrl":"10.1007/s13233-024-00347-6","url":null,"abstract":"<div><p>Currently, the rapid increase of potential thermoplastic waste, which does not circulate back into ecosystem through biodegradation, has led to valuable resource waste and environmental pollution. To utilize the economic value and reduce environmental impact, ecofriendly biomass-based wood polymer composites (WPCs) were produced from potential thermoplastic waste blends. Both recycled polystyrene (rPS) from electronic waste and recycled high-density polyethylene (rHDPE) from post-consumer waste were used as polymeric matrices. Ethiopian indigenous lowland bamboo particles (<i>Oxytenanthera abyssinica</i>), which had never been used in WPC, was utilized as the dispersed phase reinforcement. The formulation involves in situ reactive melt blending and chemical crosslinking using maleic anhydride grafted polypropylene (MAPP) and dicumyl peroxide (DCP) as an organic catalyst initiator, without preliminary solvent-based bamboo particles treatment. The properties of WPCs formulated from varying sizes of LLB particles and compositions of rHDPE, rPS, and their equal melt blends were thoroughly investigated using established standards. Similarly, the chemical composition, structure, crystallinity, thermal degradation, and contaminants of the recycled plastics, as well as the composition of indigenous LLB, were carefully evaluated and characterized before use. In situ melt blending and reaction induced crosslinking interfaced with MAPP compatibilizer and DCP crosslinking synergistically enhanced the composite properties, which were not achieved with separate polymer matrices. The result shows a very significant increase in fundamental static and dynamic mechanical properties, including thermal stability of the composites compared with uncoupled composites. Formulated WPCs can provide low-cost and sustainable building materials which can replace energy intensive and non-sustainable conventional building materials.</p><h3>Graphic Abstract</h3><p>Wood polymer composites (WPCs) were produced using blends of recycled polystyrene (rPS) and recycled high-density polyethylene (rHDPE) from post-consumer waste with Ethiopian indigenous lowland bamboo particles <i>(Oxytenanthera abyssinica</i>). The formulation involves in situ reactive melt blending and chemical crosslinking using maleic anhydride grafted polypropylene (MAPP) and dicumyl peroxide (DCP) as an organic catalyst initiator, without preliminary solvent-based bamboo particles treatment.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"33 4","pages":"479 - 496"},"PeriodicalIF":2.8,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143856571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Environmentally friendly non-isocyanate polyurethane binder for pigment dyeing","authors":"Haiyan Mao,&nbsp;Yang Guo,&nbsp;Qin Han,&nbsp;Xuemei He,&nbsp;Chenghui Zheng","doi":"10.1007/s13233-025-00366-x","DOIUrl":"10.1007/s13233-025-00366-x","url":null,"abstract":"<div><p>Non-isocyanate polyurethanes have rapidly risen as an environmentally friendly substitute to traditional isocyanate-based polyurethanes. Here, a crosslinked non-isocyanate polyurethane (CNIPU) was prepared with cyclic carbonate, polyamine, and diglycidyl ether via simple ring-opening and transcarbamoylation methods. Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy confirm the successful preparation of CNIPU. When the CNIPU is used as the pigment-dyeing binder for cotton fabric, the thermochromic microcapsules can be fixed on the fiber surface. The dyed fabric shows excellent thermochromic property and its color fastness can reach above 4 grade. This work offers an efficient strategy to utilize non-isocyanate polyurethane to fabricate pigment-dyed fabrics with green and sustainable route.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div><div><p>Synthesis of a crosslinked non-isocyanate polyurethane binder and its application in pigment dyeing.</p></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"33 4","pages":"407 - 414"},"PeriodicalIF":2.8,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143856576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"FGF-7 treatment accelerates wound healing in concentration-dependent manner by regulating TGF-β1 and VEGF expression","authors":"Young-Sik Kim,&nbsp;Gun-Jae Jeong,&nbsp;Jung Soo Lee,&nbsp;Ju Woong Jang,&nbsp;Sae Hyun Kim,&nbsp;Heung Jae Chun,&nbsp;Dae Hyeok Yang","doi":"10.1007/s13233-024-00358-3","DOIUrl":"10.1007/s13233-024-00358-3","url":null,"abstract":"<div><p>In this study, we report the effects of fibroblast growth factor-7 (FGF-7) concentration on wound healing, which has been less extensively studied compared to other growth factors. Assessment of the concentration-dependent effects of FGF-7 in an in vitro cell scratch assay showed that FGF-7 promoted human HaCaT keratinocyte migration into the wound area. In an in vivo animal test, local treatment with FGF-7 (up to 100 μg) resulted in no toxicity. In addition, we found that when 100 μg of FGF-7 was administered, transforming growth factor-beta 1 (TGF-β1), vascular endothelial growth factor (VEGF), and hydroxyproline, which are all related to wound healing, were significantly upregulated, followed by accelerated wound healing. All our results demonstrated that the FGF-7 concentration affects wound healing, and a dose of 100 μg of FGF-7 exhibited the most pronounced wound healing effect.</p><h3>Graphical abstract</h3><p>Increased wound recovery effect according to increased FGF-7 concentration in an in vivo wound model\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"33 5","pages":"655 - 665"},"PeriodicalIF":2.8,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144073983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent advancements in polyethyleneimine (PEI)-grafted materials and composites as versatile adsorbents for water detoxification","authors":"Shambhuraj A. Kapase,&nbsp;Pranoti H. Patil,&nbsp;Sushilkumar A. Jadhav","doi":"10.1007/s13233-024-00356-5","DOIUrl":"10.1007/s13233-024-00356-5","url":null,"abstract":"<div><p>The linear and branched polyethyleneimine (PEI)-based materials have shown their potential applications in various fields including water purification technologies. Due to several primary, secondary, and tertiary amine groups in their structure, PEIs as such and PEI-based copolymers, hybrid materials, and nanocomposites are capable of entrapment or adsorption of contaminants from different categories such as dyes, heavy metal ions, pharmaceuticals, and oils. The latest interesting reports in the literature about PEIs-based materials have proved the continued interest and significant advancements in these materials for developing new and highly efficient adsorbents. This review provides important basic information about PEI and its structure, a glimpse of its various applications, and, collective information with an analysis of the latest works on PEI-based materials developed to be used as adsorbents for the adsorption removal of pollutants from water. The latest advancements are discussed with the main results while the interesting data about types of materials developed, pH, adsorption time, etc. is reported in tabular format. The report concludes with the study’s main findings and future prospectus regarding synthetic polymer chemistry challenges in PEIs and PEI-based materials.</p><h3>Graphical abstract</h3><p>Schematic representation of the adsorption of various pollutants onto linear and branched polyethylenimine (PEI). </p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"33 3","pages":"249 - 270"},"PeriodicalIF":2.8,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Polyacrylamide-based nanocomposite hydrogel prepared by synergistic solar light-induced polymerization","authors":"Nery M. Aguilar,&nbsp;Brenda L. Sanchez-Gaytan,&nbsp;Guillermo Soriano-Moro","doi":"10.1007/s13233-024-00344-9","DOIUrl":"10.1007/s13233-024-00344-9","url":null,"abstract":"<div><p>A straightforward approach to prepare a nanocomposite hybrid hydrogel through simultaneous processes of nanoparticle formation, polymerization and crosslinking processes induced by sunlight is reported. This method requires just the gold precursor and acrylamide monomers to form a hydrogel network without the need of any initiator or crosslinking agent. The synthesis is based on a synergistic approach where the acrylamide monomer (AM) acts as a reducing agent and capping ligand to obtain gold nanoparticles (AuNPs), while the presence of these nanostructures induce both the polymerization and the crosslinking process.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"33 4","pages":"399 - 405"},"PeriodicalIF":2.8,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13233-024-00344-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143856593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of glyoxal concentration and nanoparticles reinforcement on the functional properties of composite hydrogel for biomedical applications","authors":"Devara Venkata Krishna,&nbsp;Mamilla Ravi Sankar,&nbsp;Thopireddy Nagendra Reddy","doi":"10.1007/s13233-024-00361-8","DOIUrl":"10.1007/s13233-024-00361-8","url":null,"abstract":"<div><p>Hydrogels are widely used in tissue engineering applications due to their supportive structure to the proliferation of cells. In recent years, much work has gone into improving these hydrogels’ mechanical qualities using various combinations of natural and synthetic polymer types, adjusting the molecular cross-linking type, and combining these techniques to create interpenetrating polymer network hydrogels. The present study investigates the preparation of composite hydrogels from polyvinyl alcohol (PVA), gelatin (GLTN), and guar gum (GG) supplemented with copper nanoparticles. The composite hydrogels’ static and dynamic mechanical behavior were tested by considering the effect of cross-linking density. The increased cross-linking density enhances storage modulus and tensile strength. <i>G</i>^′ upsurges from 69.298 to 87.289 kPa at 628 rad/s. With the incorporation of the CuNPs, further enhancement of 28.211 kPa was observed in the <i>G</i>^′ at the 628 rad/s. Hydrogel with a higher amount of glyoxal and copper nanoparticles exhibited the lowest creep deformation of 0.49%, and the amount of stress relaxed by the hydrogels within the timeframe was 42.28%. An increase in the tensile strength of ~ 31.58 kPa was perceived for the CMH4 compared with the CMH1 due to decreased porosity by 11.79% with the combined effect of glyoxal concentration and nanoparticle reinforcement. All the developed composite hydrogels exhibited better blood compatibility, antibacterial, pH, and thermo-sensitive swelling behavior.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div><div><p>Schematic representation of key research insights involved in the current work</p></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"33 5","pages":"569 - 592"},"PeriodicalIF":2.8,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144074054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of shear yield stress and apparent viscosity of xanthan gum solutions: application of rheological models and analytical study","authors":"Kaci Chalah,&nbsp;Dalila Hammiche,&nbsp;Imed Bennnoui,&nbsp;Abdelbaki Benmounah","doi":"10.1007/s13233-024-00346-7","DOIUrl":"10.1007/s13233-024-00346-7","url":null,"abstract":"<div><p>The use of xanthan gum (XG) in various fields is of significant interest due to its exceptional rheological properties, including viscosity, yield stress, and thixotropy. This article reports on the dependencies of steady shear stress and apparent viscosity on both shear rate and XG concentration based on experimentally obtained data using continuous shear. Three plastic models are used to analyze steady shear flow behavior and estimate yield stress. Additionally, the apparent viscosity is thoroughly discussed using the Ostwald–de Waele model. The results indicate that the aqueous XG solutions showed viscoplastic behavior. It was found that the experimental data fit better with the Herschel–Bulkley model, with high correlation coefficient (<i>R</i>² ˃ 0.909). XG concentration did not have a significant effect on apparent viscosity at high shear rates, ranging from 300 to 700 1/s. A mathematical model was developed to assess yield stress across a wide range of XG concentrations, from 0.01 to 4 wt%. Furthermore, a multiple regression model was created to evaluate the apparent viscosity as a function of XG concentration (ranging from 0.025 to 3 wt%) and shear rate.</p><h3>Graphic Abstract</h3><p>The apparent viscosity and yield stress of xanthan gum solutions were deeply investigated.</p>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"33 4","pages":"423 - 437"},"PeriodicalIF":2.8,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143856566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Facile, reproducible, and high-throughput production of human dermal fibroblast spheroids","authors":"A. Aslihan Gokaltun","doi":"10.1007/s13233-024-00348-5","DOIUrl":"10.1007/s13233-024-00348-5","url":null,"abstract":"<div><p>Spheroids offer a three-dimensional environment that more closely mimics physiologic conditions than traditional two-dimensional cultures. However, conventional spheroid formation methods are often time-consuming, labor-intensive, and struggle to produce high-throughput and uniform-sized spheroids. This work demonstrated an efficient, high-throughput method for generating human dermal fibroblast (HDF) spheroids (up to 1,200 spheroids/well) within 24 h using AggreWell™ plates. Spheroid formation was evaluated over 14 days using two initial seeding densities (100 and 300 cells per microwell). Larger spheroids, ranging from 127–142 µm in diameter, were observed with the higher seeding density, compared to 88–108 µm at the lower seeding density. The spheroids exhibited consistent and uniform size distributions, with a coefficient of variation under 11% on day 1 for both conditions. Key morphological parameters, including perimeter, circularity, spheroid area, and aspect ratio, were assessed on days 1, 7, and 14, revealing stable values, with circularity and aspect ratio remaining above 0.86 and 0.90, respectively. Cell viability exceeded 90% by day 7 and remained above 85% on day 14 for both seeding densities. These results highlight the scalability and reproducibility of HDF spheroid formation for drug screening, tissue engineering, and regenerative medicine.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"33 3","pages":"355 - 366"},"PeriodicalIF":2.8,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrochemical sensor for the detection of mercury in seawater using carbon dots–carboxymethyl chitosan hydrogel","authors":"S. Arundhathi,&nbsp;R. Gopika,&nbsp;P. Muhamed Ashraf,&nbsp;P. K. Binsi","doi":"10.1007/s13233-024-00354-7","DOIUrl":"10.1007/s13233-024-00354-7","url":null,"abstract":"<p>The study aimed to develop a rapid electrochemical sensor for selective sensing of mercury ions in saline environments to ensure the safety of aquatic life and human consumption. A sulfopropyl methacrylate-based hydrogel composite, synthesised by incorporating carbon dot derived from fish skin and carboxy methyl chitosan (CMCS), was used as sensing probe for mercury in aquatic environments with varying salinity. The synthesized composite was formed by interacting the carbon dot with CMCS hydrogel through C–N, conjugated C=C double bonds, and carboxyl groups, as evidenced by Fourier transform infrared spectroscopy. Electrochemical sensing through cyclic voltammetry and electrochemical impedance spectroscopy of varied concentrations of Hg²⁺ exhibited excellent linear relationships between concentration and current/ real or imaginary impedance. The Hg²⁺ interacted with the amino, hydroxyl, and sulfhydryl groups of the hydrogel composite, leading to significant structural changes or bond shifts, which resulted in a strong current signal. An excellent sensing response was demonstrated at varied salinity levels, including natural seawater, as well as with the use of interdigitated electrodes. The sensor is capable of detecting low concentrations of mercury in water under varying salinity conditions, making it suitable for applications in marine and aquaculture environments.</p><p>Synthesis of carbon dot-carboxy methyl chitosan mercury sensor </p>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"33 5","pages":"611 - 623"},"PeriodicalIF":2.8,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144074058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimized activated carbon pellets for effective cobalt ion adsorption","authors":"Minji Park,&nbsp;Yeonjin Lee,&nbsp;Jaehyeok Kyung,&nbsp;Chang-Min Yoon,&nbsp;Seulki Song","doi":"10.1007/s13233-024-00340-z","DOIUrl":"10.1007/s13233-024-00340-z","url":null,"abstract":"<div><p>Technologies for treating and removing the radioactive element cobalt, released during nuclear decommissioning, are necessary to address the health risks it poses to humans. A pelletized activated carbon material is considered the best option for effectively eliminating dissolved cobalt in water, addressing the physical constraints of traditional activated carbon. This study involved producing optimized activated carbon pellets by combining activated carbon with a polymer binder and a triethylenediamine (TEDA) attachment agent. The activated carbon pellets incorporating the TEDA attachment agent and polymer binder were used as adsorbents to observe the Co²⁺ adsorption characteristics based on attachment concentration, leading to the development of a combination of pellets with optimized adsorption capacity. It was confirmed that the C–N amine functional groups introduced by TEDA help to enhance interactions within the chemical adsorption environment with Co²⁺ ions. In experiments, the removal rates were 99.1% and 93.4% for AC@PU@0.2T with 20 wt% TEDA when treating Co²⁺ concentrations of 50 and 100 mg L⁻¹, respectively. It was confirmed that the pores inside the activated carbon were significantly reduced during the pelletization process, and high adsorption performance was maintained even after pelletization due to the chemical adsorption ability of TEDA added at the optimal ratio. It was identified that both physical and chemical adsorption mechanisms operate simultaneously, allowing effective adsorption of Co²⁺ ions while maintaining the physical properties of the pellets.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"33 4","pages":"523 - 531"},"PeriodicalIF":2.8,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143856603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}