Colloid and Polymer Science最新文献

{"title":"Enhancing processability and mechanical properties of highly filled polypropylene composites through adapted co-additives","authors":"Aziz Fihri,&nbsp;Jevgenij Lazko,&nbsp;Jérôme Mariage,&nbsp;Loïc Brison,&nbsp;Fouad Laoutid,&nbsp;Haleema Alamri,&nbsp;Yassine Malajati,&nbsp;Kholod Alamoudi,&nbsp;Nada Qari,&nbsp;Ruchi Rastogi,&nbsp;Philippe Dubois","doi":"10.1007/s00396-026-05681-y","DOIUrl":"10.1007/s00396-026-05681-y","url":null,"abstract":"<div><p>Highly filled polypropylene composites incorporating low-cost inorganic fillers, calcium carbonate and talc, were prepared by extrusion and injection molding. The balance between processability, density, melt flow, impact, tensile, and flexural properties was evaluated across multiple polypropylene-based formulations, containing either calcium carbonate or talc, with and without selected additives. The incorporation of small amounts of functional additives significantly enhanced processability by increasing the melt flow index and improving impact resistance, while maintaining the high stiffness characteristic of filled PP composites. Industrial-scale injection molding trials using these highly filled formulations confirmed their suitability for complex-shaped products. Furthermore, the mechanical recycling of these formulations was simulated through successive re-extrusion cycles. Despite the elevated level of melt flow index, the formulations demonstrated considerable stability in their key mechanical properties throughout the reprocessing cycles.</p></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"304 10","pages":"2645 - 2657"},"PeriodicalIF":2.9,"publicationDate":"2026-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermal restructuring of surface chemistry and colloidal organization in biosynthesized ZnO nanoparticles: implications for antibacterial performance","authors":"Jorge Luis Torres-López,&nbsp;Stephania Lázaro-Mass,&nbsp;Susana De la Rosa-García,&nbsp;Aranzazu Sierra-Fernández,&nbsp;Mayra A. Alvarez-Lemus,&nbsp;Abraham Gómez-Rivera,&nbsp;Sergio Gómez-Cornelio","doi":"10.1007/s00396-026-05686-7","DOIUrl":"10.1007/s00396-026-05686-7","url":null,"abstract":"<div><p>Thermal treatment plays a critical role in defining the physicochemical organization and functional behavior of biosynthesized metal oxide nanoparticles. However, its influence on the surface and colloidal evolution of biosynthesized ZnO nanoparticles (ZnO-NPs) remains insufficiently understood. In this study, ZnO-NPs obtained using aqueous plant extracts were subjected to post-synthesis drying at 60 °C or calcination at 500 °C in order to evaluate thermally induced changes in surface chemistry, crystallographic organization, colloidal behavior, and antibacterial performance. FTIR and XPS analyses revealed a marked reduction of surface-associated organic fractions after calcination, indicating greater exposure of the ZnO surface sites. In contrast, XRD and UV–Vis analyses showed only minor variations in crystallinity and optical band gap, suggesting that the bulk crystalline and electronic structure of ZnO remained largely preserved after thermal treatment. The most pronounced modifications occurred at the colloidal level, with calcination promoting larger hydrodynamic diameters, increased polydispersity, and reduced zeta potential magnitude, indicating diminished electrostatic stabilization and greater aggregation in aqueous suspension. ESEM observations further revealed differences in aggregate organization and morphological homogeneity depending on the biosynthetic pathway. Calcined ZnO-NPs exhibited narrower and more reproducible minimum inhibitory concentration (MIC) values (0.078–0.156 mg mL^–1) against Gram-positive and Gram-negative bacteria. ZnO-NPs synthesized using <i>Inga jinicuil</i> displayed comparatively more homogeneous organization and improved antibacterial performance under both thermal conditions. Overall, the results indicate that thermal treatment predominantly restructures surface-associated fractions and colloidal organization rather than inducing major crystallographic or electronic modifications, thereby influencing the consistency of antibacterial performance in biosynthesized ZnO systems.</p></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"304 10","pages":"2631 - 2643"},"PeriodicalIF":2.9,"publicationDate":"2026-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Removal performance and mechanism of Cr(VI) by dithiocarboxyl-modified polyacrylamide as flocculant","authors":"Shengji Jiang,&nbsp;Hang Zhang,&nbsp;Gang Wang,&nbsp;Lulu Wang,&nbsp;Liang Dai","doi":"10.1007/s00396-026-05676-9","DOIUrl":"10.1007/s00396-026-05676-9","url":null,"abstract":"<div><p>The highly hazardous water pollutant Cr(VI) poses a significant risk to humans and other organisms. This paper uses polyacrylamide modified with dithiocarboxyl group (DTAPAM) as a heavy metal flocculant to remove Cr(VI) from water, which exhibits flocculation, chelating, and precipitation capabilities for Cr(VI). The performance of DTAPAM was evaluated by measuring its efficiency for removing Cr(VI). The results from the flocculation tests demonstrated that an acidic environment promoted the rapid removal for Cr(VI), achieving 99.60% of removal under pH 3.0. At a DTAPAM dosage of 360 mg/L, Cr(VI) removal approached 100% under the tested conditions. Coexisting conventional inorganic cations and anions exhibited minor effects on the Cr(VI) removal. Additionally, organic complexing agents (sulfamic acid, trichloroacetic acid, aminoacetic acid, and citric acid) as well as turbidity exhibited inhibitory effects on Cr(VI) removal. Nevertheless, these effects were attenuated or largely offset with increasing dosage of DTAPAM. The mechanisms underlying the flocculation process involved redox reactions combined with chelating precipitation along with bridging and sweeping effects for removing Cr(VI). Overall, the dithiocarboxyl modification-based flocculant shows excellent performance in removing aqueous Cr(VI), providing valuable guidance for developing efficient flocculation techniques to remove Cr-containing wastewater.</p></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"304 10","pages":"2659 - 2675"},"PeriodicalIF":2.9,"publicationDate":"2026-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrospun polyacrylonitrile nanofibers with integrated internal/external Ag-ZnO particles for photocatalytic and antibacterial applications","authors":"Bishweshwar Pant,&nbsp;Raghava R. Kommalapati","doi":"10.1007/s00396-026-05682-x","DOIUrl":"10.1007/s00396-026-05682-x","url":null,"abstract":"<div><p>Silver-sensitized zinc oxide particles were incorporated into polyacrylonitrile nanofibers (Ag-ZnO/PAN NFs) using electrospinning followed by a hydrothermal technique. The resulting Ag-ZnO/PAN NFs were characterized using various methods. Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), and Fourier Transform Infrared Spectroscopy (FTIR) confirmed the successful assembly of Ag-ZnO particles within the PAN nanofibers. The as-prepared nanofiber membrane was utilized as a photocatalyst to degrade methylene blue (MB) in an aqueous solution. The photocatalytic activity was significantly enhanced after Ag modification of ZnO particles. After 90 min of exposure to UV-light, the Ag-ZnO/PAN NFs catalyst achieved approximately 97% degradation of MB and retained this efficiency over three consecutive photocatalytic cycles. In contrast, the sample without Ag NPs demonstrated about 72% degradation in the same time frame. The Ag-ZnO/PAN NFs also exhibited good bactericidal properties against <i>Escherichia coli</i> (<i>E. coli)</i> and <i>Staphylococcus aureus</i> (<i>S. aureus)</i> bacteria. Because the Ag-ZnO particles were uniformly dispersed both inside and outside the nanofibers, this approach helps to mitigate secondary pollution and addresses the challenges associated with recycling powdered catalysts. Given these features, the Ag-ZnO/PAN NFs membrane stands out as a promising candidate for water purification applications.</p></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"304 10","pages":"2619 - 2630"},"PeriodicalIF":2.9,"publicationDate":"2026-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00396-026-05682-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of initial temperature on the initiation behavior of the pre-oxidation reaction in PAN fibers and their evolution of microstructure and mechanical properties","authors":"Longjiang Shu,&nbsp;Hongyu Zhang,&nbsp;Yuying Song,&nbsp;Tianxiang Hong,&nbsp;Quan Gao","doi":"10.1007/s00396-026-05684-9","DOIUrl":"10.1007/s00396-026-05684-9","url":null,"abstract":"<div><p>Revealing the relationship between the temperature program and the reaction progress during the pre-oxidation process is crucial for preparation of the high-performance polyacrylonitrile (PAN)-based carbon fibers. The initiation of the cyclization reaction and the rearrangement of the crystal structures were prone to be induce by initial pre-oxidation temperature, which had an impact on the structure evolution and mechanical properties of final carbon fibers. This work investigated the effect of the initial temperature on the microstructure evolution and mechanical properties of the pre-oxidated fibers. The cyclization reaction initially took place at 210 ℃ and was accelerated at 240 ℃. As a result, a greater number of intermolecular oxidized cross-linking structures were generated at relatively high initial temperature. The destruction and rearrangement of the crystal structures were primarily driven by the pre-oxidation temperature. Moreover, both of pre-oxidated fibers and carbon fibers exhibited the relatively high tensile strength when the initial temperature was 210 ℃. This work elucidated the correlation among the initial pre-oxidation temperature, microstructures and mechanical properties, offering valuable insights for exploration of an economical pre-oxidation process via the reasonable optimization of temperature range.</p></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"304 10","pages":"2609 - 2618"},"PeriodicalIF":2.9,"publicationDate":"2026-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction to: Exploring the effect of piperidinium-based ionic liquids on the cetylpyridinium chloride and amitriptyline hydrochloride system: micellization, density function theory and antibacterial activity","authors":"Nafseen Ahmed,&nbsp;Mohammad Tariq,&nbsp;Juhi Saraswat,&nbsp;Rajan Patel,&nbsp;Mohd Sajid Ali,&nbsp;Abbul Bashar Khan","doi":"10.1007/s00396-026-05669-8","DOIUrl":"10.1007/s00396-026-05669-8","url":null,"abstract":"","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"304 9","pages":"2507 - 2507"},"PeriodicalIF":2.9,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148807350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of surfactants on the formation and stability of silica-PEO based shake gels","authors":"Devajyoti Banerjee,&nbsp;Adrielle Sousa Santos,&nbsp;Paul F. Luckham","doi":"10.1007/s00396-026-05679-6","DOIUrl":"10.1007/s00396-026-05679-6","url":null,"abstract":"<div><p>Certain aqueous mixtures of silica nanoparticles and poly (ethylene oxide) (PEO) can form reversible gels, known as shake gels, when subjected to shear or extensional forces such as shaking. This study investigates the influence of surfactants—specifically sodium dodecyl sulfate (SDS) and Triton X-100—on the gelation and relaxation behaviour of silica–PEO systems. Rheological measurements were conducted to monitor viscosity as a function of shear rate, enabling the identification of a critical shear rate at which viscosity increased by several orders of magnitude, indicating gel formation. Increasing surfactant concentration generally reduced the critical shear rate required for gelation. At lower concentrations, Triton X-100 promoted faster gelation than SDS, likely due to its non-ionic nature and absence of electrostatic repulsion with silica. At higher concentrations, SDS became more effective, facilitated by micelle-assisted polymer coil expansion and enhanced bridging interactions with silica. Relaxation measurements revealed that SDS slowed network breakdown with increasing concentration, whereas Triton X-100 accelerated relaxation. These contrasting behaviours are attributed to differences in molecular structure and interaction pathways, with Triton’s ethylene oxide headgroups promoting more efficient gel disassembly in the absence of shear. The findings provide mechanistic insight into how surfactant–polymer–particle interactions can be tuned to control the mechanical and temporal properties of shear-responsive gels.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"304 10","pages":"2595 - 2607"},"PeriodicalIF":2.9,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00396-026-05679-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and performance evaluation of a novel integrated surfactant for ultra-high-temperature oil-based drilling fluids","authors":"Changchun Luo,&nbsp;Rui Zhang,&nbsp;Xingyu Sui,&nbsp;Lingqiao Hu","doi":"10.1007/s00396-026-05677-8","DOIUrl":"10.1007/s00396-026-05677-8","url":null,"abstract":"<div><p>In response to the extreme high-temperature and high-pressure conditions encountered in drilling operations in complex formations such as deep and ultra-deep wells, this paper describes the synthesis of a novel integrated surfactant that combines a dual-chain hydrophobic backbone with polyfunctional polar hydrophilic groups. Its structure was characterized using Fourier-transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), gel permeation chromatography (GPC), and elemental analysis, and its interfacial properties, emulsifying performance, biological toxicity, and application effectiveness in oil-based drilling fluids were systematically evaluated. The results indicate that at a concentration of 3.0 wt%, this surfactant can reduce the oil-water interfacial tension to 1.98 mN·m^− 1 and maintain a high emulsification rate under various oil-to-water ratios. Notably, the 85:15 oil-to-water ratio system still exhibited good emulsification stability and uniform droplet distribution after high-temperature aging. Acute ecotoxicity tests (96 h LC₅₀: crustaceans 4.03 × 10⁴ mg·L^− 1; fish 5.16 × 10⁴ mg·L^− 1) met the biotoxicity admission requirements for offshore oil exploration. The oil-based drilling fluid system formulated with this surfactant exhibited optimal comprehensive performance at a concentration of 3.0 wt% concentration, exhibiting optimal comprehensive performance. After aging at 232 °C for 16 h, the demulsification voltage remained at approximately 1000 V and the dynamic shear stress at approximately 6 Pa, with high-temperature, high-pressure (HTHP) filtrate loss controlled at 6.6 mL, and stability maintained within a density range of 1.5–2.4 g·cm^− 3. High-temperature rheological analysis confirmed that the viscosity retention rate of this system at 232 °C was approximately 6.5%, demonstrating good high-temperature rheological stability. The results indicate that this novel surfactant possesses good emulsification stability, high-temperature resistance, and low biotoxicity, providing a reference for the design and application of ultra-high-temperature deep-well oil-based drilling fluid systems.</p></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"304 10","pages":"2581 - 2594"},"PeriodicalIF":2.9,"publicationDate":"2026-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Construction of an amphiphilic GO-KH550-CAB colloidal system for oil–water interfacial regulation and molecular dynamics analysis","authors":"Fuzhen Liu,&nbsp;Ming Hao,&nbsp;Junying Wang,&nbsp;Xuesong Zhang,&nbsp;Yuxin Zhang,&nbsp;Yao Wang,&nbsp;Zhou Yang","doi":"10.1007/s00396-026-05680-z","DOIUrl":"10.1007/s00396-026-05680-z","url":null,"abstract":"<div><p>This study used graphene oxide (GO) as a carrier to construct a novel graphene oxide composite material exhibiting both controllable amphiphilicity and interfacial regulation properties. Through a synergistic “silane coupling-zwitterionic betaine” grafting strategy, the amphiphilic surfactant CAB was anchored onto the GO surface via the KH550 molecular bridge, and the successful synthesis was confirmed by SEM, FTIR, XPS, and ¹H NMR analyses. Interfacial performance tests showed that the graphene oxide-based composite can achieves ultralow oil-water interfacial tension (&lt; 0.1 mN·m^− 1) at a low concentration of 0.5 g·L^− 1 and significantly enhance the hydrophilicity of quartz substrates, reducing the contact angle from 88.5° to 42.2°, demonstrating excellent interfacial activity and wettability-altering capability. Thermogravimetric analysis revealed that the material maintains good thermal stability within 100–250 °C, meeting the requirements of high-temperature reservoirs. Furthermore, molecular dynamics simulations elucidated its microscopic interfacial mechanism, showing that GO-KH550-CAB forms a dense adsorption layer at the oil-water interface, weakens the interfacial density gradient, suppresses water-molecule diffusion, and enhances affinity toward the oil phase. This work provides a new strategy for designing amphiphilic graphene-based colloidal materials for oil-water interfacial regulation and offers potential guidance for their application in enhanced oil recovery.</p></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"304 10","pages":"2563 - 2580"},"PeriodicalIF":2.9,"publicationDate":"2026-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrophobic composite foam containing modified TiO2 obtained by emulsion templating method and its adsorption-separation properties","authors":"Qiang Zhang,&nbsp;Liqin Cao,&nbsp;Xin Hu","doi":"10.1007/s00396-026-05678-7","DOIUrl":"10.1007/s00396-026-05678-7","url":null,"abstract":"<div><p>Monolithic, superhydrophobic material has wide application in the field of adsorption separations. Herein, a water-in-oil (W/O) high-internal-phase emulsions (HIPEs) templating method was used to prepare TiO₂-containing superhydrophobic porous polymers with controllable pore sizes. By introducing acryloxy silane-modified TiO₂ into the oil phase, the stability of such emulsions was enhanced, and the modified TiO₂ could co-polymerize with other monomers and anchor onto the polymer surface. Experiments found that changing the content of hydrophobic TiO₂ in the emulsion components could further improve the elastic polymer’s hydrophobicity (maximum water contact angle of 153.3°), mechanical properties, and antifouling performance. Moreover, the resulting composite foam exhibited high adsorption capacity for organic pollutants (22.8 g/g for cyclohexane, 101.6 g/g for dichloromethane, 72.6 g/g for toluene, and 23.0 g/g for diesel). The composite foam showed a rapid saturated adsorption rate for various hydrophobic organic pollutants (cyclohexane saturated within 10 s, carbon tetrachloride within 180 s), good recyclability, and the macroporous material demonstrated a certain chemical stability under saline and acidic conditions.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"304 10","pages":"2551 - 2561"},"PeriodicalIF":2.9,"publicationDate":"2026-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}