Colloid and Polymer Science最新文献

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Self-healing poly(siloxane-urethane) carbon nanotube composites with multi-band repairing capability and efficient recovery have significant photothermal response 具有多波段修复能力和高效回收的自修复型聚硅氧烷-聚氨酯碳纳米管复合材料具有显著的光热响应
IF 2.3 4区 化学
Colloid and Polymer Science Pub Date : 2025-06-03 DOI: 10.1007/s00396-025-05450-3
Yujie Liu, Xinheng Wu, Hao Zhang, Changle Tan, Xiang Sha, Lifeng Miao, Yabo Xue, Ning Li
{"title":"Self-healing poly(siloxane-urethane) carbon nanotube composites with multi-band repairing capability and efficient recovery have significant photothermal response","authors":"Yujie Liu,&nbsp;Xinheng Wu,&nbsp;Hao Zhang,&nbsp;Changle Tan,&nbsp;Xiang Sha,&nbsp;Lifeng Miao,&nbsp;Yabo Xue,&nbsp;Ning Li","doi":"10.1007/s00396-025-05450-3","DOIUrl":"10.1007/s00396-025-05450-3","url":null,"abstract":"<div><p>Polymer silicone elastomers have attracted extensive attention in fields such as human- computer interaction and health monitoring. However, traditional silicone materials are prone to irreversible damage during usage, and most of them can only self-healing under ultraviolet light of specific unfriendly wavelengths. This is harmful to the user’s health and restricts their application in multi-band exposure scenarios. Hence, there is an urgent necessity to explore materials that can self-healing under diverse conditions. In this research, carbon nanotubes (CNTs) were integrated as a photothermal conversion agent into self-healing poly(siloxane-urethane) (PSiUe) materials to fabricate a poly(siloxane-urethane)-carbon nanotube composite (PSiUe-CNTs) with multi-band self-healing properties. The impacts of different CNTs contents on the mechanical properties, self-healing properties, and thermal stability of the PSiUe-CNTs composites were investigated. By analyzing the mechanical properties of the composites with different CNTs content, it is found that the composites exhibit excellent mechanical properties when the CNTs content is 8%. Further analysis of mechanical properties before and after self-healing showed that PSiUe-CNTs were in ultraviolet light (365 nm), visible light (400–760 nm), near-infrared light (0.78–1.4 μm), and far-infrared light (25–1000 μm) under exposure can reach more than 90% self-healing efficiency in 6-h repair time, which achieve multi-band self-healing. By comparing the results of the analysis of the elements near the scratch, it is proved that the content of N, O, and Fe elements has been increased to different degrees. In addition, the recyclability analysis showed that the recyclability of the composites was excellent, with recovery efficiency above 90%. Therefore, this unique multi-stimulus-responsive self-healing polymer material can fulfill the requirements of various application scenarios, especially those closer to sunlight, and shows broad application prospects.</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 8","pages":"1681 - 1693"},"PeriodicalIF":2.3,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145142040","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
Fabrication and analysis of copper oxide–based hydrogel nanocomposite for the extraction of MB dye from wastewater 氧化铜基水凝胶纳米复合材料的制备与分析
IF 2.3 4区 化学
Colloid and Polymer Science Pub Date : 2025-06-03 DOI: 10.1007/s00396-025-05435-2
Varsha Yadav, Poorn Prakash Pande, Arbind Chaurasiya, Shailja Rai, Aradhana Chaudhary, Kopal Kashaudhan
{"title":"Fabrication and analysis of copper oxide–based hydrogel nanocomposite for the extraction of MB dye from wastewater","authors":"Varsha Yadav,&nbsp;Poorn Prakash Pande,&nbsp;Arbind Chaurasiya,&nbsp;Shailja Rai,&nbsp;Aradhana Chaudhary,&nbsp;Kopal Kashaudhan","doi":"10.1007/s00396-025-05435-2","DOIUrl":"10.1007/s00396-025-05435-2","url":null,"abstract":"<div><p>This research focuses on the removal of a toxic pollutant viz. methylene blue (MB) from polluted water. Xanthan gum (XGm) was employed as the base polymer, while acrylamide (AAm) and methacrylic acid (MAA) were used as monomers. N-hydroxymethyl acrylamide (NHMA) served as the crosslinking agent in the free-radical polymerization process to synthesize the hydrogel XGmMAN. Three hydrogel variants were developed by varying the concentration of NHMA. To enhance the catalytic performance, copper oxide (CuO) nanoparticles were integrated into the hydrogels via the sol–gel method, forming a nanocomposite (XGmMAN@CuO NCs) that acted as catalysts for the reduction of MB dye. These materials were thoroughly characterized using techniques such as Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), gel permeation chromatography (GPC), thermogravimetric analysis (TGA), point of zero charge (ΔpHpzc), and scanning electron microscopy (SEM). The synthesized XGmMAN-3@CuO NCs achieved the highest dye removal efficiency of 98.65% at an optimal pH of 7, with a maximum adsorption capacity of 144.50 mg/g. Additional experiments investigated the effects of adsorbent dosage, pH, contact time, temperature, and dye concentration. The adsorption behavior followed the Langmuir isotherm model, while kinetic studies indicated a pseudo-second-order mechanism. Thermodynamic analysis revealed negative Δ<i>G</i> values, confirming that the adsorption process was spontaneous. The adsorbed MB dye was converted to a less harmful colorless substance leuco-methylene blue using NaBH₄ as a reducing agent. The catalytic activity of the nanocomposite toward MB reduction was assessed through UV–visible spectrophotometry, keeping the amount of NaBH₄ constant while varying the pH levels. The hydrogel nanocomposites showed excellent catalytic efficiency at moderate NaBH₄ concentrations, exhibiting its effectiveness for removal of MB dye from synthetic wastewater. Furthermore, the XGmMAN-3 hydrogel exhibited excellent reusability, achieving a desorption efficiency of 96.62% and maintaining consistent performance across five consecutive adsorption–desorption cycles.</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 8","pages":"1721 - 1742"},"PeriodicalIF":2.3,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145142169","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 and application of polypyrrole/CoFe2O4 nanocomposite for chromium(VI) removal: mechanistic and kinetic insights 聚吡咯/CoFe2O4纳米复合材料去除六价铬的合成与应用:机理与动力学研究
IF 2.3 4区 化学
Colloid and Polymer Science Pub Date : 2025-05-31 DOI: 10.1007/s00396-025-05446-z
Madhav Krishn Goswami, Abhishek Srivastava, Dileep Kumar, Anupam Srivastav
{"title":"Synthesis and application of polypyrrole/CoFe2O4 nanocomposite for chromium(VI) removal: mechanistic and kinetic insights","authors":"Madhav Krishn Goswami,&nbsp;Abhishek Srivastava,&nbsp;Dileep Kumar,&nbsp;Anupam Srivastav","doi":"10.1007/s00396-025-05446-z","DOIUrl":"10.1007/s00396-025-05446-z","url":null,"abstract":"<div><p>The contamination of water, especially through the presence of toxic and carcinogenic hexavalent chromium (Cr(VI)), represents a significant global challenge, threatening both human health and ecosystems. Hexavalent chromium presents considerable threats, including organ damage, genetic mutations, and carcinogenic effects, underscoring importance for its effective removal (down to 10 µg/L) from wastewater. Adsorption materials show significant promise in wastewater remediation. By in situ polymerizing pyrrole on CoFe<sub>2</sub>O<sub>4</sub> nanoparticles, a polypyrrole-coated cobalt ferrite (PPy@CoFe<sub>2</sub>O<sub>4</sub>) magnetic nanosorbent is synthesized to achieve effective removal of Cr(VI). XRD data corroborated the findings of the SEM examination, which showed spherical nanoparticles with diameters of about 50 nm. Spinel ferrite production was suggested by the FTIR spectra, which showed clear peaks in the 400–600 cm<sup>−1</sup> region, confirming the evidence of M–O bonds. The investigation of zeta potential revealed that the polypyrrole-coated cobalt ferrite nanoparticles have a positive surface charge in an acidic medium and a negative surface charge in alkaline media. The adsorption behavior aligned with a pseudo-second-order kinetic model. The adsorption isotherms were accurately represented by the Langmuir model. PPy/CoFe<sub>2</sub>O<sub>4</sub> demonstrates a maximal monolayer adsorption capacity of 369.6 mg g<sup>−1</sup> under optimum conditions (330 K temperature, 60.0 mg adsorbent dose, and pH 2.0). The removal efficiency was still higher than 91% following the five adsorption–desorption cycles. The adsorption of Cr(VI) onto PPy/CoFe<sub>2</sub>O<sub>4</sub> takes place spontaneously, as indicated by a negative Δ<i>G</i>°. The results indicate that the PPy/CoFe<sub>2</sub>O<sub>4</sub> composite functions as a highly efficient adsorbent, showcasing extensive applicability in the treatment of wastewater contaminated with heavy metal ions.</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":"303 8","pages":"1667 - 1680"},"PeriodicalIF":2.3,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145748","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
Enhanced mechanical and swelling properties of ethylene-propylene-diene monomer/acrylonitrile-butadiene rubber composites reinforced with modified graphene oxide 改性氧化石墨烯增强乙烯-丙二烯单体/丙烯腈-丁二烯橡胶复合材料的力学性能和膨胀性能
IF 2.3 4区 化学
Colloid and Polymer Science Pub Date : 2025-05-29 DOI: 10.1007/s00396-025-05443-2
S. Vishvanathperumal, A. Kannan
{"title":"Enhanced mechanical and swelling properties of ethylene-propylene-diene monomer/acrylonitrile-butadiene rubber composites reinforced with modified graphene oxide","authors":"S. Vishvanathperumal,&nbsp;A. Kannan","doi":"10.1007/s00396-025-05443-2","DOIUrl":"10.1007/s00396-025-05443-2","url":null,"abstract":"<div><p>This study presents a novel approach to enhancing the performance of ethylene-propylene-diene monomer (EPDM) and acrylonitrile-butadiene rubber (NBR) composites by reinforcing them with graphene oxide (GO) modified using 4,4-diphenylmethane diisocyanate (MDI). While GO has been widely used as a nanofiller in rubber matrices, the use of MDI-functionalized GO (MDI-GO) in EPDM/NBR blends has not been previously reported. The modified nanofiller was incorporated using an open-mill mixer, and its effect on composite morphology was examined via field emission scanning electron microscopy. The study systematically evaluated the cure characteristics, mechanical properties, compression set, abrasion resistance, and swelling resistance of the composites. Results showed that EPDM/NBR/MDI-GO composites outperformed both unfilled and GO-filled composites. Notably, the MDI-GO-reinforced composite achieved a 137% increase in tensile strength, 59% in stress at 100% elongation, and 101% in tear strength compared to the base compound. Abrasion resistance also improved with increasing MDI-GO content, attributed to enhanced interfacial interaction and filler dispersion. These findings demonstrate the effectiveness of MDI surface functionalization in significantly improving rubber nanocomposite performance.</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 8","pages":"1649 - 1665"},"PeriodicalIF":2.3,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145297","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
Optimization of polysaccharide extraction from Mangifera indica using response surface methodology and evaluation of its antioxidant activity 响应面法优化芒果多糖提取工艺及抗氧化活性评价
IF 2.3 4区 化学
Colloid and Polymer Science Pub Date : 2025-05-29 DOI: 10.1007/s00396-025-05431-6
Jamal Moideen Muthu Mohamed, Senthilkumar Chinnaiyan, Krishnaraju Venkatesan, Durgaramani Sivadasan, Fazil Ahmad, Moufida A. Al Oueslati, Khalid Mohamad Ibraheem, Monika Bansal, Manoj Goyal, Aayesha Nasreen, R. Dineshkumar
{"title":"Optimization of polysaccharide extraction from Mangifera indica using response surface methodology and evaluation of its antioxidant activity","authors":"Jamal Moideen Muthu Mohamed,&nbsp;Senthilkumar Chinnaiyan,&nbsp;Krishnaraju Venkatesan,&nbsp;Durgaramani Sivadasan,&nbsp;Fazil Ahmad,&nbsp;Moufida A. Al Oueslati,&nbsp;Khalid Mohamad Ibraheem,&nbsp;Monika Bansal,&nbsp;Manoj Goyal,&nbsp;Aayesha Nasreen,&nbsp;R. Dineshkumar","doi":"10.1007/s00396-025-05431-6","DOIUrl":"10.1007/s00396-025-05431-6","url":null,"abstract":"<div><p>The purpose of the present study was to explore the possibility of <i>Mangifera indica</i> (MI) residue as a novel source of polysaccharides by optimizing the extraction procedure and characterizing the resulting product. The polysaccharide content of the powdered kernels of MI was extracted with the aid of response surface methodology (RSM) to optimize the process. Box-Behnken design (BBD) was employed to improve the extraction variables, including centrifugation time (20 min) and force (6800 × <i>g</i>), number of extraction cycles (2), and ratio of water to raw material (18), where the obtained yield which was about 59.65 ± 1.09%. Then, the morphological and physicochemical properties of the extracted polysaccharide were studied using field emission scanning electron microscopy (FE-SEM) and Fourier transform infrared (FTIR) spectroscopy. Antimicrobial activities of the extract shown ideal 13.4 ± 0.21 and 10.8 ± 0.15 mm for gram-positive and 13.3 ± 0.43 mm of gram-negative bacteria, respectively. This shows that the ability of MI to reduce DPPH radicals was highly concentration-dependent, which suggests that the particles are very strong antioxidant (53.0 ± 5.13). From the cell viability study exhibits the proliferation of 3T3 mouse fibroblast cells on the surface of polysaccharide suggest that was non-toxic with the concentration ranges from 5 to 50 µg mL<sup>−1</sup>. Moreover, MI-derived polysaccharides are sustainable, effective alternatives to traditional polysaccharides for widespread applications in homeostatic agent, absorbent, antimicrobial therapy, antioxidant formulations, and wound care.</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 8","pages":"1577 - 1590"},"PeriodicalIF":2.3,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145634","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
Study on epoxy repair agents under the influence of bisphenol A diglycidyl ether (DGEBA): from macro to nano scale 双酚A二缩水甘油酯醚(DGEBA)影响下环氧修补剂的研究:从宏观到纳米尺度
IF 2.3 4区 化学
Colloid and Polymer Science Pub Date : 2025-05-29 DOI: 10.1007/s00396-025-05448-x
Xue Meng, Dan Meng, Qichang Fan, Qun Guo, Xianghao Meng
{"title":"Study on epoxy repair agents under the influence of bisphenol A diglycidyl ether (DGEBA): from macro to nano scale","authors":"Xue Meng,&nbsp;Dan Meng,&nbsp;Qichang Fan,&nbsp;Qun Guo,&nbsp;Xianghao Meng","doi":"10.1007/s00396-025-05448-x","DOIUrl":"10.1007/s00396-025-05448-x","url":null,"abstract":"<div><p>To improve the use value and economic applicability of building components, the mechanism of performance improvement of epoxy crack repair agent was explored. The influence mechanism of diglycidyl ether (DGEBA) on the epoxy system was revealed through macroscopic experiments and microscopic molecular dynamics (MD) simulation. The glass transition temperature (Tg) of the epoxy system was obtained by differential scanning calorimetry (DSC). The mechanical properties of the epoxy system were characterized by tensile, bending, and compression tests. On this basis, the shrinkage and flexural properties of mortar bonded specimens were tested to characterize their engineering adaptability. The static mechanical properties, concentration distribution, mean square displacement (MSD), fractional free volume (FFV), radial distribution function (RDF), the distribution of H bonds, and cohesive energy density (CED) of the simulated system were analyzed by MD simulation. It was found that the content of DGEBA affected the comprehensive properties of epoxy. When DGEBA: m-PDA = 5:1, the mechanical and thermodynamic properties of epoxy are significantly improved. DGEBA can significantly improve the stability of interatomic bonding of epoxy systems, reduce the movement ability of molecular chains, make the distribution of molecular chains more concentrated, improve the packing density of the system, thus greatly improving the elasticity and stiffness of the system, and enhance the mechanical properties. This method provides a new way to repair cracks in building components.</p></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"303 8","pages":"1591 - 1605"},"PeriodicalIF":2.3,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145298","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
Fabrication of pH-responsive hydrogel beads based on coumaric acid–grafted aminated gellan gum and alginate for colon-targeted delivery of resveratrol 香豆酸接枝胺化结冷胶和海藻酸盐制备ph响应水凝胶珠用于结肠靶向递送白藜芦醇
IF 2.3 4区 化学
Colloid and Polymer Science Pub Date : 2025-05-29 DOI: 10.1007/s00396-025-05436-1
Becky Robert, Sadhasivam Subramaniam
{"title":"Fabrication of pH-responsive hydrogel beads based on coumaric acid–grafted aminated gellan gum and alginate for colon-targeted delivery of resveratrol","authors":"Becky Robert,&nbsp;Sadhasivam Subramaniam","doi":"10.1007/s00396-025-05436-1","DOIUrl":"10.1007/s00396-025-05436-1","url":null,"abstract":"<div><p>This study presents a novel polymeric delivery system for nutraceuticals, specifically resveratrol, using a pH-sensitive method for colon-specific release. The polymeric carrier system consists of aminated gellan gum (AGG) conjugated with coumaric acid (CA) and alginate (Alg), forming hydrogel beads that protect the encapsulated components from the acidic gastric environment while enabling targeted release in the small intestine. Experimental findings demonstrate a pronounced pH-responsive swelling behaviour and drug release of the hydrogel beads, effectively restraining the release of resveratrol at gastric pH and facilitating a controlled release at the intestinal pH of 7.4. The release exponents from the kinetic analysis using different models indicates a non-Fickian diffusion mechanism governing the release of resveratrol from the polymer matrix. Furthermore, the synthesised gel beads exhibit high biocompatibility, as demonstrated with the Caco-2 cell line. Notably, the phenol-grafted polymer system for the delivery of nutraceutical has not been reported previously and this study marks the first report. The developed hydrogel beads hold significant promise as an effective drug delivery vehicle for nutraceutical applications, potentially improving the therapeutic efficacy of encapsulated compounds.</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 8","pages":"1607 - 1622"},"PeriodicalIF":2.3,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145296","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 and properties of 1,4-benzenedimethanol-modified PBAT copolyesters 1,4-苯二甲醇改性PBAT共聚聚酯的合成及性能研究
IF 2.3 4区 化学
Colloid and Polymer Science Pub Date : 2025-05-29 DOI: 10.1007/s00396-025-05434-3
Xiaofeng He, Shuang Zhang, Xiaofeng Liu, Yang Yu, Qi Yue, Tiejun Ge
{"title":"Synthesis and properties of 1,4-benzenedimethanol-modified PBAT copolyesters","authors":"Xiaofeng He,&nbsp;Shuang Zhang,&nbsp;Xiaofeng Liu,&nbsp;Yang Yu,&nbsp;Qi Yue,&nbsp;Tiejun Ge","doi":"10.1007/s00396-025-05434-3","DOIUrl":"10.1007/s00396-025-05434-3","url":null,"abstract":"<div><p>In this paper, rigid polybenzenedimethanol ester/terephthalic acid-co-butyl adipate (PBPAT) was prepared introducing rigid 1,4-benzenedimethanol (PXG) monomers into the molecular chain of polybutylene terephthalate (PBAT) via melt polycondensation. The co-polyesters were structurally characterized using Fourier transform infrared spectroscopy (FTIR) and liquid–solid nuclear magnetic resonance (<sup>1</sup>H-NMR). Molecular weight, thermal properties, crystallinity, and hydrophilicity were further analyzed using gel permeation chromatography (GPC), X-ray diffractometer (XRD), differential scanning calorimeter (DSC), integrated thermal analyzer (TGA), and contact angle measurements. The mechanical properties of PBPAT were evaluated using a universal tensile testing machine and a rotational rheometer. The results indicated that the molecular weight of PBPAT reached 3.54 × 10<sup>4</sup> g/mol. The crystallinity increased from 11.57 to 14.07% compared to PBAT. Moreover, the tensile strength enhanced from 17.70 to 25.21 MPa, while the elastic modulus increased from 132.28 to 208.66 MPa compared to PBAT.</p><h3>Graphical Abstract</h3><p>In this paper, a series of novel poly(terephthalic acid-co-caproic acid terephthalate/terephthalic acid-co-caproic acid butylene terephthalate) (PBPAT) with varying PXG contents were prepared via melt polycondensation method using terephthalic acid, adipic acid, 1,4-butanediol, and 1,4-benzenedimethanol as raw materials. The influence of PXG on the mechanical, thermal, and hydrophilic properties of the copolyester was systematically investigated.</p>\u0000<div><figure><div><div><picture><img></picture></div></div></figure></div></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"303 8","pages":"1637 - 1647"},"PeriodicalIF":2.3,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145635","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
Enhancing the temperature resistance, salt resistance, and viscoelasticity of polyacrylamide via hydrophobic association: a rheological perspective 通过疏水缔合增强聚丙烯酰胺的耐温性、耐盐性和粘弹性:流变学观点
IF 2.3 4区 化学
Colloid and Polymer Science Pub Date : 2025-05-29 DOI: 10.1007/s00396-025-05439-y
Zilong Wang, Lei Wang, Mengyu Liang, Xiaoling Li, Xianyun Shi, Xin Wen, Xiaojuan Lai, Lihong Wang, Jiali Chen, Qihui Hu
{"title":"Enhancing the temperature resistance, salt resistance, and viscoelasticity of polyacrylamide via hydrophobic association: a rheological perspective","authors":"Zilong Wang,&nbsp;Lei Wang,&nbsp;Mengyu Liang,&nbsp;Xiaoling Li,&nbsp;Xianyun Shi,&nbsp;Xin Wen,&nbsp;Xiaojuan Lai,&nbsp;Lihong Wang,&nbsp;Jiali Chen,&nbsp;Qihui Hu","doi":"10.1007/s00396-025-05439-y","DOIUrl":"10.1007/s00396-025-05439-y","url":null,"abstract":"<div><p>Using acrylamide, methyl acryloyloxyethyl trimethyl ammonium chloride, acrylamidomorpholine, and eicosyl dimethyl allyl ammonium chloride as raw materials, herein, a high-temperature- and salt-resistant hydrophobic associative polymer—ADOC—is synthesized via free-radical polymerization in an aqueous solution. The synthesis of ADOC is confirmed via Fourier-transform infrared spectroscopy and proton nuclear magnetic resonance. The involved molecular microaggregation structure is observed through scanning electron microscopy, and associative-network molecular aggregates are formed. The rheological properties of ADOC are determined using a rheometer; the critical associative mass fraction of ADOC is found to be 0.22%. Notably, ADOC is tested in different solvents, with the final viscosities in clear water, a sodium chloride aqueous solution, and a calcium chloride solution being 58.32, 39.68, and 20.19 mPa·s, respectively. It also demonstrates satisfactory thermal stability and a high shear viscosity recovery rate (90%). Although the molecular structure is disrupted under high shear, the molecules regain a certain entanglement structure when the involved external force disappears, allowing the viscosity to rise after 1 h of shear at a rate of 170 s<sup>−1</sup> at 180 ℃. Thixotropy testing reveals a pronounced thixotropic ring. Viscoelasticity testing shows that for the involved ADOC solution, G′ &gt; G”, indicating a robust linear plateau region and high solution viscosity owing to intermolecular associations. The viscosity of 0.6% ADOC after 1 h of shear at 170 s<sup>−1</sup> and 180 ℃ was 58.32 mPa·s. These findings demonstrate that ADOC possesses exceptional temperature and shear resistance properties, making it promising for future use in exploiting deep and ultradeep oil reservoirs.</p></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"303 8","pages":"1623 - 1636"},"PeriodicalIF":2.3,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145633","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
Enhancing the fire safety and mechanical performance of EVA/IFR cable materials via MXene by nano-synergistic strategy MXene纳米协同增强EVA/IFR电缆材料的防火安全性和力学性能
IF 2.3 4区 化学
Colloid and Polymer Science Pub Date : 2025-05-28 DOI: 10.1007/s00396-025-05445-0
Ningning Hong, Pengfei Jia, Shiqi Chen, Chengcheng Hu, Junfeng Xia, Bibo Wang, Jiansheng Sun
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