Colloid and Polymer Science最新文献

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Study on the DC breakdown performance and dielectric characteristics of epoxy resin/SrTiO3 nanocomposites by varying temperature 温度变化下环氧树脂/SrTiO3纳米复合材料直流击穿性能和介电特性的研究
IF 2.3 4区 化学
Colloid and Polymer Science Pub Date : 2025-05-07 DOI: 10.1007/s00396-025-05427-2
Muhammad Zeeshan Khan, Faisal Alsaif, Farooq Aslam
{"title":"Study on the DC breakdown performance and dielectric characteristics of epoxy resin/SrTiO3 nanocomposites by varying temperature","authors":"Muhammad Zeeshan Khan,&nbsp;Faisal Alsaif,&nbsp;Farooq Aslam","doi":"10.1007/s00396-025-05427-2","DOIUrl":"10.1007/s00396-025-05427-2","url":null,"abstract":"<div><p>Due to advancements in modern industry, typical high-voltage epoxy (Ep) insulation is inadequate for high temperatures and elevated voltages. To overcome this issue, Ep resin/strontium titanate (SrTiO<sub>3</sub>) nanocomposites were synthesized to mitigate insulating flaws. Nano-SrTiO<sub>3</sub> was modified using the silane coupling agent KH550. The alterations in the molecular chain following the addition of modified nano-SrTiO<sub>3</sub> were assessed using FTIR. <i>T</i><sub>g</sub> confirms that Ep resin/(SrTiO<sub>3</sub>) nanocomposites, at an appropriate filling level, reduces inter-particle distances and increase the amount of immobile Ep areas inside the nanocomposite, hence elevating the glass transition temperature. The incorporation of nano-SrTiO<sub>3</sub> has an obvious effect on both the dielectric constant and dielectric loss of composites. The DC breakdown strength improved with the addition of modified nano-SrTiO<sub>3</sub>, which created deeper traps inside the bulk matrix. Furthermore, the rise in temperature leads to the creation of an electron avalanche, which diminishes charge suppression and hence reduces DC breakdown strength. The DC conductivity decreased after the addition of modified nano-SrTiO<sub>3</sub> into Ep resin. Moreover, the addition of modified nano-SrTiO<sub>3</sub> into Ep resin elevates the partial discharge initiation voltage, hence preventing discharge dispersion prior to reaching flashover. Additionally, reduced temperature significantly impacts the partial discharge inception voltage (PDIV) by lowering the kinetic energy of the charge, prolonging the de-trapping process along the surface and consequently increasing PDIV.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"303 7","pages":"1409 - 1421"},"PeriodicalIF":2.3,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163321","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}
引用次数: 0
Biodegradation of PLA in surface water and its behavior towards PFOA: interactional characteristics and computational insights 聚乳酸在地表水中的生物降解及其对PFOA的行为:相互作用特征和计算见解
IF 2.3 4区 化学
Colloid and Polymer Science Pub Date : 2025-05-02 DOI: 10.1007/s00396-025-05423-6
Sadam Hussain Tumrani, Bharat Prasad Sharma, Ali Raza Otho, Eman A. Ayob, Mohammed A. Amin, Mohamed Mohamed Soliman, Razium Ali Soomro, Selcan Karakuş
{"title":"Biodegradation of PLA in surface water and its behavior towards PFOA: interactional characteristics and computational insights","authors":"Sadam Hussain Tumrani,&nbsp;Bharat Prasad Sharma,&nbsp;Ali Raza Otho,&nbsp;Eman A. Ayob,&nbsp;Mohammed A. Amin,&nbsp;Mohamed Mohamed Soliman,&nbsp;Razium Ali Soomro,&nbsp;Selcan Karakuş","doi":"10.1007/s00396-025-05423-6","DOIUrl":"10.1007/s00396-025-05423-6","url":null,"abstract":"<div><p>The environmental impact of biodegradable microplastics (BMPs) is profoundly influenced by aging-induced surface transformations, yet their interactions with persistent organic pollutants, such as perfluorooctanoic acid (PFOA), remain poorly understood. This work investigates how aging polylactic acid (PLA), a common BMP, in simulated surface water for 80 days alters its physicochemical properties and behavior towards PFOA. Aging triggered oxidative and hydrolytic degradation, leading to pronounced morphological changes, including increased surface roughness, hydrophilicity, and oxygen-to-carbon (O/C) ratio from 0.82 to 1.28. These transformations introduced hydroxyl and carboxyl functional groups, shifting the PFOA adsorption mechanism from physisorption (in fresh PLA) to chemisorption (in aged PLA) via stronger electrostatic interactions and hydrogen bonding. Additionally, kinetic and isotherm analyses revealed a tenfold increase in PFOA monolayer adsorption capacity for aged PLA (PLA-80) compared to pristine PLA. Density functional theory (DFT) calculations corroborated these findings, demonstrating a reduced HOMO–LUMO energy gap upon PFOA adsorption, indicative of enhanced electronic reactivity and charge transfer. Topological analysis further identified multiple hydrogen-bonding sites, confirming the dominance of electrostatic forces in pollutant retention. These results underscore the critical role of aging in amplifying BMPs’ environmental reactivity, emphasizing the urgent need to incorporate aging processes into risk assessments for biodegradable plastics.</p></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"303 7","pages":"1397 - 1408"},"PeriodicalIF":2.3,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161142","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}
引用次数: 0
Fully physically reinforced hydrogels: a periodic curcumin delivery system with convenient injection and thermo-reversible adhesion 完全物理增强的水凝胶:一个定期姜黄素输送系统,方便注射和热可逆粘附
IF 2.3 4区 化学
Colloid and Polymer Science Pub Date : 2025-04-29 DOI: 10.1007/s00396-025-05425-4
Jingyan Zhang, Zhengkai Wang, Yuxing Yue, Yishuo Ning, Pengyuan Xu, Weixiang Fan, Han Xuan, Haiou Zhou, Mei Sun, Xianbiao Wang, Ping Wang, Mingdi Yang
{"title":"Fully physically reinforced hydrogels: a periodic curcumin delivery system with convenient injection and thermo-reversible adhesion","authors":"Jingyan Zhang,&nbsp;Zhengkai Wang,&nbsp;Yuxing Yue,&nbsp;Yishuo Ning,&nbsp;Pengyuan Xu,&nbsp;Weixiang Fan,&nbsp;Han Xuan,&nbsp;Haiou Zhou,&nbsp;Mei Sun,&nbsp;Xianbiao Wang,&nbsp;Ping Wang,&nbsp;Mingdi Yang","doi":"10.1007/s00396-025-05425-4","DOIUrl":"10.1007/s00396-025-05425-4","url":null,"abstract":"<div><p>Hydrogels with fully physical networks process significant advantages as convenient injection, self-healing, and biodegradable properties probably accompanied with unfavorable mechanics, adhesiveness, and drug-loading characteristics. In this study, <i>N</i>-acryloyl glycinamide (NAGA)–grafted gelatin decorated with photosensitive <i>N′</i>-(2-nitrobenzyl) (<i>NB</i>) moiety, denoted as GN, was synthesized via a convenient one-step Michael addition. The GN hydrogels in terms of gelatin physical reinforcement was conveniently constructed via UV-induced <i>NB</i> group separation and <i>dual</i>-amide discharge. Also released are curcumin drugs loaded into hydrophobic <i>NB</i> groups via hydrophobic association. Contrastive analysis on a series of GN hydrogels with different degrees of substitution (DS) was performed. As a result, the GN-5 hydrogel with moderate DS (~ 41.2 ± 1.3%) possessed the overall optimal performance with the highest final storage modulus, maximal compression stress, most dense pore structure, and minimal swelling deformation. In addition, the fully physical networks thoroughly assisted in degradation, fast self-healing, and thermo-reversible adhesiveness. Most importantly, the further curcumin release achieved via heating induced H-bonding destruction, and the Ritger-Peppas model best described the dynamic drug release traces during the four kinetic models, which show great application potential in the field of biomedical materials.</p><h3>Graphical Abstract</h3><p>The fully physically reinforced gelatin hydrogels afford as a periodic curcumin delivery system with convenient injection, fast self-healing, thoroughly degradation, and thermo-reversible adhesion. </p>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"303 7","pages":"1377 - 1395"},"PeriodicalIF":2.3,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145171245","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}
引用次数: 0
Synthesis of opal films through the ordering of polymeric latex particles induced by functionalized carbon nanofibers 功能化碳纳米纤维诱导聚合乳胶颗粒有序合成蛋白石薄膜
IF 2.3 4区 化学
Colloid and Polymer Science Pub Date : 2025-04-16 DOI: 10.1007/s00396-025-05422-7
Lorena Farías-Cepeda, Yucundo Mendoza-Tolentino, Zureima García-Hernández, Roberto Yáñez-Macías, Mónica Aimeé Ceniceros Reyes, Carlos Gallardo Vega, Pablo González-Morones, Ernesto Hernández-Hernández
{"title":"Synthesis of opal films through the ordering of polymeric latex particles induced by functionalized carbon nanofibers","authors":"Lorena Farías-Cepeda,&nbsp;Yucundo Mendoza-Tolentino,&nbsp;Zureima García-Hernández,&nbsp;Roberto Yáñez-Macías,&nbsp;Mónica Aimeé Ceniceros Reyes,&nbsp;Carlos Gallardo Vega,&nbsp;Pablo González-Morones,&nbsp;Ernesto Hernández-Hernández","doi":"10.1007/s00396-025-05422-7","DOIUrl":"10.1007/s00396-025-05422-7","url":null,"abstract":"<div><p>We report a novel synthetic strategy to obtain photonic films through the self-assembly of polymeric core–shell particles onto functionalized carbon nanofibers (CNFs-F). Driven by the interfacial compatibility among the components, the particles adhere to the nanofibers’ surface promoting highly ordered latex particles (LP) that form opal films (OF) with minimal defects. In contrast, litmus films obtained from single core–shell latex particles (OF-L) show an arrangement in small domains randomly oriented. CNFs-F-based opal films emit a green coloration with an incidence angle of visible light (IAVL) of 90°. Meanwhile, a blue coloration is observed at an angle of 45°, an optical effect characteristic of green films, also called Ogreen.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"303 7","pages":"1365 - 1375"},"PeriodicalIF":2.3,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166046","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}
引用次数: 0
Hollow electrospun mats from biobased-polybutylene succinate and thermoplastic polyurethane blends for dermal wound dressing 真皮伤口敷料用生物基聚丁二酸丁二烯和热塑性聚氨酯共混物制成的中空静电纺垫
IF 2.3 4区 化学
Colloid and Polymer Science Pub Date : 2025-04-15 DOI: 10.1007/s00396-025-05420-9
Hatice Bilge Isgen, Sema Samatya Yilmaz, Ayse Aytac
{"title":"Hollow electrospun mats from biobased-polybutylene succinate and thermoplastic polyurethane blends for dermal wound dressing","authors":"Hatice Bilge Isgen,&nbsp;Sema Samatya Yilmaz,&nbsp;Ayse Aytac","doi":"10.1007/s00396-025-05420-9","DOIUrl":"10.1007/s00396-025-05420-9","url":null,"abstract":"<div><p>In recent years, environmental pollution and plastic waste have become a significant problem worldwide. The long-term retention of single-use plastic waste in nature harms ecosystems and threatens biodiversity. Sustainable solutions such as increasing recycling processes and using biodegradable and environmentally friendly materials are gaining importance to prevent environmental pollution. Thermoplastic polyurethane (TPU) is widely used in wound dressing studies, but its petroleum-derived nature prevents recycling. When TPU is used by mixing it with a biodegradable polymer such as polybutylene succinate, polylactic acid (PLA), and polycaprolactone (PCL) a partially biodegradable and environmentally friendly structure is obtained. Moreover, the biological advantages of TPU continue to be utilized. In this study, eco-friendly hollow electrospun mats were produced from biocompatible biobased polybutylene succinate (BioPBS) and thermoplastic polyurethane (TPU) mixtures in different ratios (80:20, 60:40, 50:50, 40:60, and 20:80, w:w) by coaxial electrospinning. It was planned to produce biomedical materials that exhibit liquid absorption behavior by emptying the core of hydrophobic BioPBS/TPU mixture nanofibers. Hollow BioPBS/TPU nanofibers were designed to be used as skin wound dressings in exuding wounds. Hollow electrospun mats, which absorb water to their full capacity, dried within 2 and 3 min. Ethanol used to remove the core of the fiber was reported to improve the fiber properties relative to the use of distilled water. PBS/TPU (60/40, w/w) electrospun mat was reported to have the densest fibrous structure, smoothest fibers, and least sticky fibers. FTIR spectra showed that PBS and TPU interacted physically. The mechanical properties of nanofibers were improved owing to the high surface/volume ratio, which increased with the PBS/TPU mixture and hollow structure. It was stated that hollow nanofibers met the tensile stress (1–20 MPa) value that could be used as a skin tissue wound dressing. PBS/TPU (60/40, w/w) and PBS/TPU (50/50, w/w) electrospun mats had the highest fibroblast cell (L929) viability with values of 80.64% and 71.44%, respectively. It was suggested that these nanofibers could be used as a dermal wound dressing for 24 h.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"303 7","pages":"1347 - 1364"},"PeriodicalIF":2.3,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165200","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}
引用次数: 0
Development of sustained-release curcumin and piperine co-encapsulated electro-sprayed multilayer chitosan microparticles 姜黄素与胡椒碱共包封电喷涂多层壳聚糖缓释微粒的研制
IF 2.3 4区 化学
Colloid and Polymer Science Pub Date : 2025-04-14 DOI: 10.1007/s00396-025-05418-3
Ngoc-Hanh Cao-Luu, Huynh-Vu-Thanh Luong, Duy Toan Pham, Bich-Thuyen Nguyen-Thi, Ngoc-Mai Ngo-Truong, Huynh-Giao Dang, Tuong-Vy Nguyen
{"title":"Development of sustained-release curcumin and piperine co-encapsulated electro-sprayed multilayer chitosan microparticles","authors":"Ngoc-Hanh Cao-Luu,&nbsp;Huynh-Vu-Thanh Luong,&nbsp;Duy Toan Pham,&nbsp;Bich-Thuyen Nguyen-Thi,&nbsp;Ngoc-Mai Ngo-Truong,&nbsp;Huynh-Giao Dang,&nbsp;Tuong-Vy Nguyen","doi":"10.1007/s00396-025-05418-3","DOIUrl":"10.1007/s00396-025-05418-3","url":null,"abstract":"<div><p>Curcumin (CCM) is a natural compound with strong tumor-inhibiting activity. However, CCM is not widely used for cancer treatment because of its poor water solubility, penetration, and bioavailability. In this study, CCM and piperine (PPR), a bio-enhancer, were co-encapsulated within chitosan (CS) by co-axial electro-spraying method aiming to increase CCM bioavailability. Two formulation approaches have been proposed, including (1) co-encapsulation of CCM and PPR in microparticle core (e.g., CCM/PPR@CS) and (2) separate encapsulation of CCM and PPR in two different CS layers (e.g., CCM@PPR@CS). The optimal electro-spraying parameters were investigated and found to have applied a voltage of 15 kV, flow-rate of 0.1/0.2 mL h<sup>−1</sup> (core/shell), and needle tip-to-collector distance of 10 cm for CCM/PPR@CS microparticle; and applied voltage of 19 kV, flow rate of 0.1/0.2/0.3 mL h<sup>−1</sup> (inner-layer/middle-layer/outer-layer), and working distance of 14 cm for CCM@PPR@CS formulation. The obtained particles were non-agglomerated, spherical, and possessed core–shell structure with clear boundaries, relatively wide distribution with mean diameters of 366 ± 136 nm for CCM/PPR@CS and 784 ± 139 nm for CCM@PPR@CS. The in vitro CCM and PPR cumulative releases were considerably high (70–80%) and the diffusion of drugs through polymer network was the primary release mechanism, adhering to the Korsmeyer-Peppas kinetics model. Remarkably, the CCM@PPR@CS formulation improved the cell viability when comparing to free CCM with impressive half-maximal inhibitory concentration (IC<sub>50</sub>). In conclusion, the CCM@PPR@CS structure could be utilized as a potential drug delivery system for decreasing denaturation and enhancing the absorption of CCM.</p></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"303 7","pages":"1331 - 1345"},"PeriodicalIF":2.3,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164752","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}
引用次数: 0
A hyper-visco-pseudo-elastic model to characterize the temperature-dependent behavior of ethylene propylene diene monomer rubber 一种表征乙丙二烯单体橡胶温度依赖性行为的超粘-伪弹性模型
IF 2.3 4区 化学
Colloid and Polymer Science Pub Date : 2025-04-10 DOI: 10.1007/s00396-025-05411-w
Dianjie Jiang, Zhiping Tu, Zhanjiang Wang
{"title":"A hyper-visco-pseudo-elastic model to characterize the temperature-dependent behavior of ethylene propylene diene monomer rubber","authors":"Dianjie Jiang,&nbsp;Zhiping Tu,&nbsp;Zhanjiang Wang","doi":"10.1007/s00396-025-05411-w","DOIUrl":"10.1007/s00396-025-05411-w","url":null,"abstract":"<div><p>A hyper-visco-pseudo-elastic model of rubber is presented, which is applied to model various mechanical behaviors, including strain rate effect, temperature effect, and the Mullins effect. The proposed model combines the Yeoh hyperelastic model, the linear viscoelastic theory of Prony series, and the Ogden–Roxburgh pseudo-elastic material model. The temperature effect is reflected by associating relaxation time, relaxation amount, and pseudo-elastic parameters with temperature. To determine model parameters effectively through experiments, a numerical stress solution based on finite time increments is provided, allowing the incorporation of rubber experiments to obtain model parameters directly. Stress relaxation and loading and unloading experiments are conducted using ethylene propylene diene monomer (EPDM) rubber to validate the proposed model. The obtained experimental data are fitted using the numerical stress solution and the gray wolf optimization (GWO) algorithm, yielding the constitutive model parameters. The fitting accuracy is demonstrated by <span>({R}^{2})</span> values exceeding 0.985 for all experimental curves. Furthermore, the model's predictive capability is evaluated by conducting experiments at temperatures different from the fitting temperature. The results exhibit <span>({R}^{2})</span> values greater than 0.986 between the experimental and predicted curves. The good consistency of the results indicates that the proposed model has a high applicability potential, and it can fit material parameters with less experiments to predict the experimental outcomes under other working conditions.</p></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"303 7","pages":"1299 - 1319"},"PeriodicalIF":2.3,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145142846","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}
引用次数: 0
Synergistic effects of basalt and carbon fibers on the physical, mechanical, and thermal properties of nylon composites 玄武岩和碳纤维对尼龙复合材料物理、机械和热性能的协同效应
IF 2.3 4区 化学
Colloid and Polymer Science Pub Date : 2025-04-10 DOI: 10.1007/s00396-025-05419-2
C. R. Raajeshkrishna, P. Chandramohan, G. Rajeshkumar, Godwin Gamali Lathika, Sanjay Mavinkere Rangappa, Suchart Siengchin
{"title":"Synergistic effects of basalt and carbon fibers on the physical, mechanical, and thermal properties of nylon composites","authors":"C. R. Raajeshkrishna,&nbsp;P. Chandramohan,&nbsp;G. Rajeshkumar,&nbsp;Godwin Gamali Lathika,&nbsp;Sanjay Mavinkere Rangappa,&nbsp;Suchart Siengchin","doi":"10.1007/s00396-025-05419-2","DOIUrl":"10.1007/s00396-025-05419-2","url":null,"abstract":"<div><p>In the current study, the influence of short basalt fiber reinforcement (BF) (10–30 wt.%) and its hybridization with short carbon fiber (CF) as secondary reinforcement (5–10 wt.%) on the physical and thermomechanical characteristics of nylon 6 (N) were investigated. The BF and BF/CF hybrid nylon composites were prepared using melt blending in a twin-screw extruder, followed by the injection molding process. The control specimens (without reinforcements) were also prepared and tested for comparison. The density, strength (tensile, flexural, and impact), microhardness, and thermal degradation evaluations were executed as per the standards of ASTM. The results revealed that the basalt reinforcement in the nylon is beneficial in improving the thermomechanical properties. In particular, the composites containing 20 wt.% of BF show higher properties compared to the other BF composites and control matrix. Furthermore, the reinforcement of CF enhanced the properties of the composites due to their superior strength and stiffness. Specifically, the BF composites containing 10 wt.% of CF exhibit increases of 18.69 and 12.6% in tensile and flexural strengths, respectively, as well as enhancements of 11.06 and 23% in tensile and flexural modulus, respectively. The scanning electron microscopic images revealed a good interface adhesion compatibility between the fibers and the matrix.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"303 7","pages":"1321 - 1329"},"PeriodicalIF":2.3,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163776","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}
引用次数: 0
Predicting glass transition temperatures for structurally diverse polymers 预测不同结构聚合物的玻璃化转变温度
IF 2.3 4区 化学
Colloid and Polymer Science Pub Date : 2025-04-08 DOI: 10.1007/s00396-025-05421-8
Xinliang Yu
{"title":"Predicting glass transition temperatures for structurally diverse polymers","authors":"Xinliang Yu","doi":"10.1007/s00396-025-05421-8","DOIUrl":"10.1007/s00396-025-05421-8","url":null,"abstract":"<div><p>This work proposes an accurate quantitative structure–property relationship (QSPR) model for glass transition temperatures (<i>T</i><sub>g</sub>s) of 315 polymers with diverse structures. Support vector regression (SVR), combined with a genetic algorithm, was used to develop the SVR model that achieved a determination coefficient (<i>R</i><sup>2</sup>) of 0.937 and a root-mean-square (<i>rms</i>) error of 25.047 K for 79 <i>T</i><sub>g</sub>s of polymers in the test set. The investigation shows that increasing the percentage of C atoms, molecular polarity, complementary information content index, spectral mean absolute deviation and eigenvalue in augmented adjacency matrix by introducing benzene, naphthalene, anthracene, pyridine, quinoline, imide, and/or C‒N atom pairs with a topological distance of 9, can result in high chain rigidity and high <i>T</i><sub>g</sub>s. Conversely, increasing the free volume and flexible segments by introducing groups such as ‒Si‒O‒, ‒Si‒C‒, and ‒Si‒N‒ in the backbone chain, N and O atom pairs, S and X (heteroatoms) atom pairs with a topological distance of 1, F‒X with a topological distance of 2 and CH<sub>2</sub>RX groups can bring down <i>T</i><sub>g</sub>s.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"303 7","pages":"1287 - 1297"},"PeriodicalIF":2.3,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145142925","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}
引用次数: 0
Double network hydrogel based on PVA and CMC: synthesis and its potential application in local drug delivery 基于PVA和CMC的双网络水凝胶的合成及其在局部给药中的潜在应用
IF 2.3 4区 化学
Colloid and Polymer Science Pub Date : 2025-04-07 DOI: 10.1007/s00396-025-05417-4
Hanieh Javaheri, Hossein Ghasemzadeh, Abolfazl Keshtkar Vanashi
{"title":"Double network hydrogel based on PVA and CMC: synthesis and its potential application in local drug delivery","authors":"Hanieh Javaheri,&nbsp;Hossein Ghasemzadeh,&nbsp;Abolfazl Keshtkar Vanashi","doi":"10.1007/s00396-025-05417-4","DOIUrl":"10.1007/s00396-025-05417-4","url":null,"abstract":"<p>Local drug delivery systems are capable of concentrating optimal doses of drugs to the target regions without affecting healthy tissues. Hydrogels have extensive applications in tissue regeneration, treating diseases, and drug delivery and have recently been employed in localized drug delivery. In the present study, a novel thermo-sensitive double network hydrogel (DNH) was prepared based on polyvinyl alcohol (PVA) and carboxy methyl cellulose (CMC). The formation of the hydrogel was studied using Fourier transform infrared spectrometry (FT-IR), thermogravimetric analysis (TGA), and swelling test. Scanning electron microscopy (FE-SEM) and Brunauer–Emmett–Teller (BET) analysis were used to investigate the morphology and the pore size of the hydrogel, respectively. The tensile test was also performed to determine the amount of stretch and the fracture point of the DNH. The tensile strength of the DNH was found to be 24.7795 kPa. In the next step, a complex of doxorubicin with Fe<sup>2+</sup> (Dox-Fe<sup>2+</sup>) was prepared, and the formation of the complex was investigated by FT-IR and UV–Vis spectroscopy. The release profile of the complex from DNH was studied at various pH and temperatures. The results confirmed the sustained and temperature-dependent release of doxorubicin complex. The kinetic studies of drug release by the DNH showed that the release of Dox-Fe<sup>2+</sup> complex follows the Korsmeyer-Peppas model.</p>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"303 7","pages":"1273 - 1285"},"PeriodicalIF":2.3,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145142484","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}
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