Le Thi Hong Nhung, Pham Hai Long, Ha Minh Ngoc, Dang Minh Hieu, Vu Van In, Nguyen Dinh Thang
{"title":"Correction to: Cobalt Embedded-melanin/alginate complex as an alternative solid phase for purification of His-tagged proteins","authors":"Le Thi Hong Nhung, Pham Hai Long, Ha Minh Ngoc, Dang Minh Hieu, Vu Van In, Nguyen Dinh Thang","doi":"10.1007/s00396-026-05685-8","DOIUrl":"10.1007/s00396-026-05685-8","url":null,"abstract":"","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"304 9","pages":"2505 - 2506"},"PeriodicalIF":2.9,"publicationDate":"2026-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148807233","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":"Comparison of the characterization and antimicrobial, antioxidant, and in vitro cytotoxic activities of green and chemically synthesized gold nanoparticles","authors":"Beste Çağdaş","doi":"10.1007/s00396-026-05671-0","DOIUrl":"10.1007/s00396-026-05671-0","url":null,"abstract":"<div><p>AuNPs are produced safely and sustainably using green synthesis techniques, which substitute natural metabolites for hazardous chemicals. The physicochemical, antibacterial, antioxidant, and cytotoxic characteristics of AuNPs were compared after they were produced chemically (CS-AuNPs) and environmentally (GS-AuNPs) utilizing Zingiber officinale extract. The successful synthesis of spherical structures with sizes ranging from 5 to 50 nm was demonstrated by TEM micrographs. The zeta potentials (–26.4 mV and − 17.3 mV for CS-AuNP and GS-AuNP, respectively) explained the high stability. The FT-IR measurements indicated that the AgNPs were coated and stabilized by bioactive chemicals derived from the extract. Gram-positive and gram-negative bacteria were both tested for antibacterial effectiveness. Antioxidant activities were assessed by a free radical scavenging assay. GS-Au NPs at 8x dilution had an 88% DPPH decreasing capacity, while CS-Au NPs at 8x dilution had 73%. The CS-AuNPs and GS-AuNPs displayed a target-oriented effect on MCF7 at lower IC<sub>50</sub> concentrations of 100% concentrated and 2-fold diluted compared to the L929 (IC<sub>50</sub> value is much more above of 100% concentration for both types of AuNPs). Overall, in comparison to CS-AuNPs, the phytosynthesized GS-AuNPs exhibit broad activities that allow for their usage in a variety of biological and biotechnological applications.</p></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"304 9","pages":"2453 - 2471"},"PeriodicalIF":2.9,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148807459","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}
Nafseen Ahmed, Mohammad Tariq, Juhi Saraswat, Rajan Patel, Mohd Sajid Ali, Abbul Bashar Khan
{"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, Mohammad Tariq, Juhi Saraswat, Rajan Patel, Mohd Sajid Ali, 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":"Chemical regulation of phase inversion, interfacial microstructure, and rheological behavior in crude oil emulsions","authors":"Yuchen Wang, Qiansong Guo, Xianda Sun, Chunjing Lu, Limin Suo, Wenjun Ma","doi":"10.1007/s00396-026-05675-w","DOIUrl":"10.1007/s00396-026-05675-w","url":null,"abstract":"<div><p>During chemical flooding, crude oil readily forms emulsions upon contact with injected fluids. The associated phase transition, interfacial microstructural evolution, and stability variation can significantly affect oil–water interfacial behavior and flow characteristics. To clarify the underlying mechanisms under different chemical conditions, this study investigated emulsions formed between dehydrated crude oil and produced wastewater, salt solutions, alkali solutions, polymer solutions, surfactant systems, alkali–surfactant systems, and alcohol solutions. Confocal laser scanning microscopy, droplet size analysis, and rotational rheological measurements were used to systematically evaluate the effects of chemical type, concentration, water cut, and crude-oil SARA fractions on emulsion properties. The results show that water cut is the dominant factor controlling emulsion phase behavior, while chemical type further affects the phase inversion point and microstructural evolution. Resins and asphaltenes, as the main natural surface-active components, participate in interfacial-film formation and influence emulsion stability. Overall, salt systems more readily promote emulsion destabilization; alkali systems inhibit droplet coarsening to some extent; polymer systems show relatively limited effects; alkali–surfactant systems exhibit pronounced concentration dependence; and alcohol systems contribute to emulsion stability. The rheological results mainly reflect the bulk rheological behavior of emulsions, and all systems exhibit shear-thinning characteristics. These findings provide a theoretical basis for phase-state regulation and stability evaluation of crude oil emulsions during chemical flooding.</p></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"304 9","pages":"2473 - 2489"},"PeriodicalIF":2.9,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148807274","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}
Le Thi Hong Nhung, Pham Hai Long, Ha Minh Ngoc, Dang Minh Hieu, Vu Van In, Nguyen Dinh Thang
{"title":"Cobalt embedded-melanin/alginate complex as an alternative solid phase for purification of His-tagged proteins","authors":"Le Thi Hong Nhung, Pham Hai Long, Ha Minh Ngoc, Dang Minh Hieu, Vu Van In, Nguyen Dinh Thang","doi":"10.1007/s00396-026-05674-x","DOIUrl":"10.1007/s00396-026-05674-x","url":null,"abstract":"<div><p>Recombinant enzymes and proteins are increasingly used in the key areas of biotechnology, environmental science, and biomedicine. To facilitate purification, recombinant proteins are often expressed with various affinity tags, with the His-tag being the most common. Melanin has emerged as a promising biomaterial with different excellent physicochemical properties. In this study, we successfully developed and characterized a melanin/alginate-based material incorporating cobalt ions (Co-M/A) as an alternative stationary phase for His-tagged protein purification. Co-M/A beads exhibited defined morphology and structural stability, which were critical for reproducible protein binding. EDX, XRF, XRD, and XRF analyses confirmed the presence of cobalt species in Co-M/A particles, while FTIR spectra suggested evidence of Co²<sup>+</sup> coordination with carboxyl and hydroxyl groups in the M/A matrix. After loading the protein solution on the Co-M/A beads, the emergence of amide I and amide II peaks was observed, indicating the successful capture of His-tagged proteins through specific coordination between histidine residues and Co²<sup>+</sup> ions. Functionally, Co-M/A demonstrated high specificity toward His-tagged proteins of different sizes and structures, while showing negligible non-specific binding to non-tagged proteins. Impressively, the purity of eluted proteins exceeded 95.3% after a single purification step using Co-M/A beads. Importantly, the functional activities of purified proteins, including nanobodies (A8) and enzymatic proteins (Lc-BoNT/A), were well preserved as confirmed by SDS-PAGE analysis and Western blotting analyses, ensuring downstream applications. In conclusion, this study demonstrates the successful development of Co-M/A beads as a promising stationary phase for His-tagged protein purification with high efficiency.</p></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"304 9","pages":"2491 - 2503"},"PeriodicalIF":2.9,"publicationDate":"2026-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148807660","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}
Tong Zhang, Mingyan Dang, Xutong Zhang, Chengzhi Jiang, Yichen Li
{"title":"Acrylic acid grafted chitosan composite with enhanced Cu2+ adsorption performance: synthesis, characterization, kinetics and thermodynamics","authors":"Tong Zhang, Mingyan Dang, Xutong Zhang, Chengzhi Jiang, Yichen Li","doi":"10.1007/s00396-026-05668-9","DOIUrl":"10.1007/s00396-026-05668-9","url":null,"abstract":"<div><p>Chitosan-based adsorbents are limited by low adsorption capacity and poor stability in heavy metal remediation. To address these limitations, an acrylic acid-grafted chitosan composite (CTS-g-AAC) was synthesized via a two-step method involving acrylic acid grafting and glutaraldehyde cross-linking. The Cu<sup>2+</sup> adsorption performance and mechanism of CTS-g-AAC were systematically investigated. Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) characterizations confirmed the porous structure of CTS-g-AAC, which favors mass transfer, successful grafting of acrylic acid, and coordination-chelating interactions between Cu<sup>2+</sup> and surface functional groups including -NH₂, -OH and -COO⁻. Under optimal conditions (pH 4, initial Cu<sup>2+</sup> concentration 200 mg·L⁻¹, temperature 323 K, and adsorption time 4 h), the maximum Cu<sup>2+</sup> adsorption capacity of CTS-g-AAC reached 192.96 mg·g⁻¹. Pseudo-second-order kinetic model fitting demonstrated that chemisorption dominated the rate-limiting step of adsorption, and the excellent fit of isothermal data to the Langmuir model further verified the monolayer adsorption characteristic of the process. Thermodynamic results showed negative ΔG, positive ΔH (22.28 kJ·mol⁻¹) and positive ΔS, demonstrating that the adsorption process was spontaneous, endothermic and accompanied by increased system disorder. Multi-dimensional evidence confirmed that coordination-chelating chemisorption is the dominant mechanism. CTS-g-AAC exhibits great potential for Cu<sup>2+</sup> removal from wastewater, and the proposed two-step modification strategy provides a feasible approach to enhance the performance of chitosan-based adsorbents for heavy metal remediation.</p></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"304 9","pages":"2437 - 2452"},"PeriodicalIF":2.9,"publicationDate":"2026-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148807334","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}
Qian Zhang, Shuyi Tian, Yuanyuan Cao, Yongsheng Li
{"title":"Stimuli-responsive soft actuators based on colloidal nanomaterials","authors":"Qian Zhang, Shuyi Tian, Yuanyuan Cao, Yongsheng Li","doi":"10.1007/s00396-026-05665-y","DOIUrl":"10.1007/s00396-026-05665-y","url":null,"abstract":"<div><p>Stimuli-responsive soft actuators are capable of converting external stimuli into macroscopic mechanical motion and have shown extensive applications in soft robots, flexible wearable electronics, and artificial muscles. Owing to their abundant surface-active sites, excellent dispersibility, high structural anisotropy, and diverse physicochemical responsiveness, colloids have served as ideal functional fillers or responsive units for the construction of stimuli-responsive soft actuators. This enables the design of soft actuators with multi-field coupled responses and complex motion patterns, overcoming the limitations of traditional homogeneous materials. This review focuses on the most recent research advances in stimuli-responsive soft actuators based on colloidal nanomaterials. Following a detailed introduction of colloids currently applied in actuation systems, five types of colloid-based soft actuators, including light-responsive, heat-responsive, magnetically responsive, electrically responsive, and solvent-responsive actuators, are systematically summarized, with a focus on their actuation mechanisms, fabrication methods, and corresponding actuation behaviors. Finally, several typical applications of these actuators, such as soft grippers, artificial muscles, and biomimetic robots, are highlighted to provide an intuitive perspective on their application areas. This review is expected to offer novel inspirations for the construction of next-generation high-performance and intelligent actuators.</p></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"304 9","pages":"2163 - 2187"},"PeriodicalIF":2.9,"publicationDate":"2026-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148807471","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":"Influence of ZrO₂ nanoparticle incorporation in brake composites on tribofilm evolution and tribological mechanisms on the steel counterface","authors":"Qinglun Che, Zhenhang Yang, Ruao Dong, Kewei Li, Jinhong Chen, Jianjun Zhang, Shaomei Zheng, Guoxiang Hao, Huifa Shi, Jingjing Zhang","doi":"10.1007/s00396-026-05655-0","DOIUrl":"10.1007/s00396-026-05655-0","url":null,"abstract":"<div><p>A critical challenge remains for non-asbestos organic (NAO) brake composites reinforced with hard ceramic ZrSiO₄ microparticles, which act as the primary load-bearing phase to effectively enhance wear resistance yet inevitably induce severe scratching damage to the steel counterface. To resolve this conflict between wear protection and surface damage, this paper systematically introduced ZrO₂ nanoparticles into ZrSiO₄-containing NAO composites and investigated their influence on tribological behavior and tribofilm evolution under varying sliding speeds and contact pressures. The results revealed an obvious dual mechanism between ZrSiO₄ microparticles and ZrO₂ nanoparticles. ZrSiO₄ microparticles support the external load and promote intense tribo-oxidation that forms a protective iron-oxide layer at elevated speeds, yet their aggressive plowing action continuously scores the steel surface. Conversely, ZrO₂ nanoparticles can effectively remove pre-existing oxide layers on the steel surface and promote tribo-sintering of wear debris into a compact, continuous tribofilm, that effectively passivates the counterface and suppresses scratching. However, this protective sintered tribofilm is repeatedly torn and dislodged by hard ZrSiO₄ particles, resulting in continuous tribofilm regeneration that significantly raises the specific wear rate of the composite and introduces pronounced friction instability during the running-in stage. The synergy between ZrSiO₄ and ZrO₂ thus dictates a fundamental trade-off: nanoparticle-enabled counterface protection is obtained at the expense of moderately sacrificed composite wear resistance. These findings clarify the micro-nano synergistic tribological mechanism and provide a mechanistic basis for designing next-generation brake materials that balance counterface friendliness with overall tribological performance.</p></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"304 9","pages":"2413 - 2424"},"PeriodicalIF":2.9,"publicationDate":"2026-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148807498","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":"Mechanical recyclability of an industrial poly(ether-ether-ketone) (PEEK): Performance evaluation and process optimization","authors":"Maud Plouzeau, Mehdi Trolong, Laurent Cauret","doi":"10.1007/s00396-026-05666-x","DOIUrl":"10.1007/s00396-026-05666-x","url":null,"abstract":"<div><p>This study investigated the recyclability potential of an industrial poly(ether-ether-ketone) (PEEK). The research aims to evaluate the effects of mechanical reprocessing on PEEK’s structure, thermal behavior, and mechanical properties, with a particular focus on PEEK pelletizing as a process optimization technique. Thermal and spectroscopic analyses (FTIR and DSC) indicated that the first reprocessing cycle induces polymer chain scission, while subsequent cycles promote the formation of branching and/or partial cross-linking structures, slightly reducing the degree of crystallinity and increasing the crystallization temperature. Melt Flow Index (MFI) measurements suggest no major change in flow behavior under the tested conditions. Dynamic mechanical analysis (DMA) indicated an increase in glass transition temperature after recycling, consistent with reduced molecular mobility due to cross-linking. Mechanical testing demonstrated that after two recycling cycles, a moderate decrease in tensile modulus and impact strength occurs, although the overall changes remained moderate. Interestingly, the regranulated PEEK sample exhibited improved flexural stiffness, while maintaining good processability. Overall, the results suggest that PEEK can be reprocessed through multiple recycling cycles and that pelletizing helps ensure stable manufacturing without significant loss of performance under the investigated conditions, supporting its potential for industrial reuse under the investigated conditions.</p></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"304 9","pages":"2425 - 2435"},"PeriodicalIF":2.9,"publicationDate":"2026-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148807472","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":"Comparative study of PHI ternary solid dispersions prepared by different techniques: structural characterization, solubility, and cytocompatibility","authors":"Guoyu Sun, Hejie Wang, Jie Guo, Qing Wen, Shenghua Zha, Yuqing Liu, Rongrong Tian, Qingsheng Zhao","doi":"10.1007/s00396-026-05663-0","DOIUrl":"10.1007/s00396-026-05663-0","url":null,"abstract":"<div><p>Jet milling is a commonly used technique in the field of ultrafine powder preparation, but it is rarely employed for drug delivery systems. This study aimed to enhance the aqueous solubility of phillyrin (PHI)—a bioactive lignan compound isloated from <i>Forsythia suspensa</i> leaves—by developing ternary solid dispersions (SDs) using dimethyl-β-cyclodextrin (DM-β-CD) and Tween 80 via different techniques. Phase solubility studies identified DM-β-CD as the optimal carrier. Ternary SDs with a weight ratio of PHI: DM-β-CD: Tween 80 = 1:4.75:0.25 were prepared via co-grinding (SD1), spray drying (SD2), and jet milling (SD3). Comprehensive physicochemical characterization (FT-IR, PXRD, SEM, <sup>1</sup>H NMR, DSC) revealed structural modifications. Evaluations included solubility, antioxidant activity, antibacterial, and cytotoxicity profiles. Structural analyses confirmed amorphous transformation and reduced particle size in the SDs. In PHI SD3, the water solubility of PHI was enhanced 7-fold to 1.75 mg/mL. The SDs exhibited enhanced antioxidant and antibacterial activities relative to pure PHI. Cytotoxicity assays indicated no significant toxicity, with cell viability exceeding 70% at concentrations ≤ 200 µg/mL. Jet milling successfully produced solvent-minimized ternary PHI solid dispersions, significantly improving solubility and bioactivity. This approach demonstrates considerable potential for optimizing the delivery of poorly soluble natural compounds such as PHI.</p></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"304 9","pages":"2379 - 2394"},"PeriodicalIF":2.9,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148807649","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}