Yang Gao, Jiaming Hu, Leping Wu, Shuai Zhang, Jing Li, Kai Du
{"title":"Soft materials containing dynamic C–N bonds for fluorescence visualization","authors":"Yang Gao, Jiaming Hu, Leping Wu, Shuai Zhang, Jing Li, Kai Du","doi":"10.1515/polyeng-2025-0021","DOIUrl":"https://doi.org/10.1515/polyeng-2025-0021","url":null,"abstract":"Abstract Dynamic covalent bonds exhibit excellent reversibility, high sensitivity and flexible designability among all dynamic covalent bonds. Herein, a dynamically covalent cross-linked polymer (CPPHEA) with triazolinedione (TAD)-indole adducts as cross-linking points was constructed, and the CPPHEA˗6 % exhibits good mechanical properties (51 MPa). In addition, the in-situ relaxation fluorescence spectroscopy was used to characterize the dynamic behavior of C–N bonds in force-reversible polymer networks. Overall, our strategy provides a strong basis for the development of covalent crosslinked polymer materials while enhancing mechanical strength and ductility, which is difficult to achieve with conventional chemical approaches.","PeriodicalId":16881,"journal":{"name":"Journal of Polymer Engineering","volume":"45 6","pages":"472-479"},"PeriodicalIF":0.0,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147883406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shishan Xue, Zhiyong Ye, Herong Zhang, Meiling Guo, Xi Yang, Dengliang He, Shuxin Liu, Ning Chen
{"title":"Photocatalytic g-C<sub>3</sub>N<sub>4</sub>/poly(2-acrylamido-2-methylpropane sulfonic acid) composite hydrogel triggering the synergetic effect for long-lasting sustainable purifying organic wastewater","authors":"Shishan Xue, Zhiyong Ye, Herong Zhang, Meiling Guo, Xi Yang, Dengliang He, Shuxin Liu, Ning Chen","doi":"10.1515/polyeng-2024-0216","DOIUrl":"https://doi.org/10.1515/polyeng-2024-0216","url":null,"abstract":"Abstract With the development of modern industry, the water pollution is getting severer which causes the huge environmental problems. In this work, the novel photocatalytic polyelectrolyte composite hydrogels based on crosslinked poly(2-acrylamido-2-methylpropane sulfonic acid) equipped with graphite carbon nitride (g-C 3 N 4 ) were exploited via a facile preparation route, which exhibited extremely high removal ratio of 95 % and 94.5 % to Rhodamine B and tetracycline, respectively, through the synergistic effect of adsorption and photodegradation. Remarkably, the recyclability was also observed on the as-prepared hydrogels, which enabled to reuse for 15 times with the few attenuations of removal efficiency to contaminants. This study provides the new insights into the photocatalyst composite hydrogel and possesses the profound significance of the treatment of organic pollutants.","PeriodicalId":16881,"journal":{"name":"Journal of Polymer Engineering","volume":"45 3","pages":"269-280"},"PeriodicalIF":0.0,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147883049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ziyu Liu, Yanqing Liu, Chong Zhang, Takashi Sakamaki, Xianning Li
{"title":"Preparation and anti-fouling behavior of conductive and hydrophilic polypyrrole modified PVDF composite membrane","authors":"Ziyu Liu, Yanqing Liu, Chong Zhang, Takashi Sakamaki, Xianning Li","doi":"10.1515/polyeng-2024-0153","DOIUrl":"https://doi.org/10.1515/polyeng-2024-0153","url":null,"abstract":"Abstract Conductive filter membranes have shown great potential in alleviating membrane fouling. In this study, polypyrrole (PPy) was used as the conductive material and sodium anthraquinone-2-sulfonate (AQS) was used as the dopant to perform surface modification on the PVDF membrane. After modification, the contact angle of the membrane decreased from 79.40° to 48.57°, and the electrical conductivity of membrane increased from zero to 1.60 S/cm. The good hydrophilicity and electrical conductivity of PPy-AQS/PVDF endowed it with superior antifouling capabilities, reducing the static protein (BSA) adsorption from 0.147 mg/cm 2 to 0.097 mg/cm 2 . Under the action of an electric field of −0.1 V, the flux decay rate of PPy-AQS/PVDF decreased, and the flux recovery rate improved.","PeriodicalId":16881,"journal":{"name":"Journal of Polymer Engineering","volume":"45 1","pages":"82-91"},"PeriodicalIF":0.0,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147880356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Preparation and properties of PLCL/OM-Laponite materials with potential applications in orthopedic bandage","authors":"Yan Ren, Yonggang Lin, Yabei Ding, Ruimin Tang, Minglong Yuan, Hongli Li, Yongming Chuan","doi":"10.1515/polyeng-2024-0099","DOIUrl":"https://doi.org/10.1515/polyeng-2024-0099","url":null,"abstract":"Abstract Poly( l -lactide- co -caprolactone) (PLCL) is the polymeric material with good biodegradability and biocompatible properties, but it is insufficient in strength properties that the pure PLCL is performed as orthopedic bandage. The PLCL has been blended with the laponite which is modified by cetyltrimethylammonium bromide (CTAB) to prepare composited bandage splines. The organic-modified laponite (OM-laponite) results of Fourier transform infrared (FTIR) and thermogravimetry analysis (TG) indicate that the laponite was successfully grafted with CTAB and the thermal stability was improved with increasing CTAB. The mechanical properties reveal that elongation at break strengthen with the increasing OM-laponite. When the content of OM-laponite is 2.0 %, the elongation at break and tensile strength of composited spline are superior to the medical orthopedic bandage. The results of thermal stability show that it was helpful to improve the crystallization properties of PLCL with the addition of OM-laponite. The water contact angle results demonstrate that the hydrophilicity is enhanced and is beneficial to cell adhesion. The results of cell experiment illustrate that the composite materials have a certain effect on cell proliferation when the content of OM-laponite is less than 2 %. Compared with the medical orthopedic bandage, it is satisfied with the application requirements.","PeriodicalId":16881,"journal":{"name":"Journal of Polymer Engineering","volume":"45 2","pages":"187-199"},"PeriodicalIF":0.0,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147908798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Acryloyl starch/carboxymethyl cellulose grafting copolymerization composite hydrogel for efficient adsorption of methylene blue","authors":"Xueli Liu, Yali Sun, Zhong-Zhu Hu, Chunfeng Zhu","doi":"10.1515/polyeng-2024-0120","DOIUrl":"https://doi.org/10.1515/polyeng-2024-0120","url":null,"abstract":"Abstract An efficient composite adsorbent was prepared based on acryloyl starch/carboxymethyl cellulose grafting copolymerization for the adsorptive removal of methylene blue. The developed composite hydrogels were characterized by means of FTIR, SEM (EDS-SEM), and XRD. Various parameters affecting the removal of methylene blue such as the type of adsorbents, pHs, the amount of adsorbents dosage, initial methylene blue concentration, and contact time were optimized using a series of batch adsorption experiments. The experimental data of the adsorption process were more fitted to Langmuir isotherm ( R 2 = 0.9898) with a maximum adsorption capacity of 483.5 mg/g and batch kinetic experiments revealed that the adsorption process followed quasi-second-order kinetic model. The adsorption process was rapid and equilibrium was reached within 30 min. When the adsorption dosage is 0.2 g L −1 , the adsorption yield for 100 mg L −1 methylene blue solution can reach 96.7 %. Therefore, acryloyl starch/carboxymethyl cellulose grafting copolymerization composite hydrogel present excellent adsorption efficiency, shows the potential application in future treatment of dyes wastewater.","PeriodicalId":16881,"journal":{"name":"Journal of Polymer Engineering","volume":"45 1","pages":"73-81"},"PeriodicalIF":0.0,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147895900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Anilkumar Yamala, Jai Shree Kurba, D. Sanjeev Kumar, Ravi Kumar Kanaparthi, Ashok K. Madikonda
{"title":"Synthesis, rheology, cytotoxicity and antibacterial studies of N-acrolylglycine-acrylamide copolymer soft nano hydrogel","authors":"Anilkumar Yamala, Jai Shree Kurba, D. Sanjeev Kumar, Ravi Kumar Kanaparthi, Ashok K. Madikonda","doi":"10.1515/polyeng-2023-0247","DOIUrl":"https://doi.org/10.1515/polyeng-2023-0247","url":null,"abstract":"Hydrogels possess excellent biological properties that make them ideal for biomedical applications. They are compatible with living cells and tissues because they can swell in the presence of water. In this study, we investigated the stability and biocompatibility of hydrogels. We synthesized and characterized N-acryl glycine (NAG) monomer and then synthesized its copolymer using the miniemulsion-polymerization technique, a soft-hydrogel method. To confirm the morphological properties of the dried hydrogel particles, we used the field emission scanning electron microscopy (FESEM) technique. We also investigated the rheological properties of the hydrogels for different concentrations to evaluate their mechanical strength and gel-like properties. Our findings indicated that the 10 % gel had superior strength and yield strain at all examined temperatures (30 °C, 37 °C, and 40 °C) compared to other concentrated gels. We systematically evaluated the biocompatibility of the hydrogel using three different cell lines: HEK 293T, RAW 264.7, and HeLa. Our cell line studies demonstrated that hydrogels are viable when exposed to a concentration of 0.5 mg/mL. Moreover, cell proliferation was observed at concentrations below 0.25 mg/mL. The MTT assay and rheology results suggest that hydrogel characteristics are more suitable for various biomedical applications, such as drug delivery and tissue engineering.","PeriodicalId":16881,"journal":{"name":"Journal of Polymer Engineering","volume":"1 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142264856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Low thickness electromagnetic wave absorbing polyurethane and IIR composites by interfacial polarization of multi-layer structure","authors":"Jinghui Yang","doi":"10.1515/polyeng-2024-0095","DOIUrl":"https://doi.org/10.1515/polyeng-2024-0095","url":null,"abstract":"Electromagnetic cooperative strategy has been proved to be an effective approach that can significantly decrease the matching thickness required for reflection loss. However, improving the electromagnetic wave (EMW) absorbing effectiveness with low matching thickness remains challenging for current single-phase absorbing materials. A layer-by-layer construction design is used in our study via a combination with iso-butyl isoprene rubber (IIR) and mixed polyurethane (MPU) as the matrix, with the single-wall carbon nanotubes (SWCNTs) and magnetic powder as fillers. This bilayer composite design resulted in a decrease in matching thickness and a shift in absorption bandwidth to higher frequencies by 40 %–50 %. Furthermore, the trilayer structure of MPU/IIR/MPU was found to stabilize permeability, enhance the thermal stability of the magnetism and improve the shielding effectiveness significantly. The thickness corresponding minimum absorption loss of the trilayer composites decreased and the absorption bandwidth of −10 dB widened by 50 % from 8.2 GHz–9.5 GHz to 10.2 GHz–12.4 GHz.","PeriodicalId":16881,"journal":{"name":"Journal of Polymer Engineering","volume":"69 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An experimental investigation on the influence of pore foaming agent particle size on cell morphology, hydrophobicity, and acoustic performance of open cell poly (vinylidene fluoride) polymeric foams","authors":"Nivedhitha Durgam Muralidharan, Jeyanthi Subramanian","doi":"10.1515/polyeng-2024-0124","DOIUrl":"https://doi.org/10.1515/polyeng-2024-0124","url":null,"abstract":"Globally, the development of porous structured materials has been receiving incredible responses for various high-performance engineering applications. Piezoelectric cellular foams have recently attracted the attention of researchers to emerging applications of acoustic sensors, low-frequency hydrophones, and energy-harvesting devices. As pore morphology is closely related to the shape and the size of the pore-foaming agent, it is necessary to address the influence of particle size of the foaming agent on cell morphology to expand their application area. Hence, this research article establishes the impact of particle size of pore foaming agents on pore morphology, hydrophobicity, and acoustic characteristics of open-cell polyvinylidene fluoride (PVDF) based piezoelectric cellular composites. Open-cell PVDF cellular composites have been fabricated using the template removal method with sodium chloride (NaCl) as a sacrificial templating agent in three different particle sizes: larger, medium, and finer. Based on the experimental results, it can be stated that the particle size of the templating agents dramatically influences the pore morphology, hydrophobicity, and acoustics performance of the PVDF foam samples. The PVDF foams possessing medium pore size have exhibited a maximum sound absorption coefficient of 0.89 at a frequency range of 1,000–1,500 Hz, indicating that PVDF foams have great potential for noise-controlling applications.","PeriodicalId":16881,"journal":{"name":"Journal of Polymer Engineering","volume":"2 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ruiying Wu, Meng Chen, Wenjing Zhang, Wenqing Yang, Libin Bai, Li Huo
{"title":"Synthesis and properties of reed-based polyurethane (PU) coating","authors":"Ruiying Wu, Meng Chen, Wenjing Zhang, Wenqing Yang, Libin Bai, Li Huo","doi":"10.1515/polyeng-2024-0109","DOIUrl":"https://doi.org/10.1515/polyeng-2024-0109","url":null,"abstract":"The reuse of agricultural waste and the development of bio-based materials are the main strategies for solving the global energy crisis and environmental problems. Agricultural waste reeds containing natural nano-silica (SiO<jats:sub>2</jats:sub>) were liquefied with PEG-400, Castor oil, and acid to produce reed-based polyols (R–P). The result shows that the liquefied product is a polyol with a hydroxyl value of 171 mgKOH/g, a viscosity of 1.221 Pa S, the number average molecular weight (Mn) of 1.202 kg/mol. Then reed-based two-component polyurethane emulsion (R-T-PU) and reed-based one-component waterborne polyurethane emulsion (R-O-WPU) with good glossiness and excellent mechanical properties were prepared. Because of the natural nano-SiO<jats:sub>2</jats:sub> in reed and castor oil, the coatings exhibit excellent mechanical properties and hydrophobicity. The results show that the series of reed-based polyurethane has excellent mechanical properties, a maximum hardness of 6H, good hydrophobic effect, a maximum contact angle of 109°, high thermal stability, and a maximum initial decomposition temperature can reach 299.1 °C. Therefore, the environmental protection bio-based polyurethane coating with excellent properties can be prepared with the reed, which is expected to replace fossil resources. It provides an experimental basis for the high-added-value utilization of reed.","PeriodicalId":16881,"journal":{"name":"Journal of Polymer Engineering","volume":"71 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effect of epoxidized soybean oil on melting behavior of poly(l-lactic acid) and poly(d-lactic acid) blends after isothermal crystallization","authors":"Wenwei Li, Jun Shen, Dutchanee Pholharn, Keartisak Sriprateep, Patnarin Worajittiphon, Yottha Srithep","doi":"10.1515/polyeng-2024-0081","DOIUrl":"https://doi.org/10.1515/polyeng-2024-0081","url":null,"abstract":"The effect of epoxidized soybean oil (ESO) on homocrystallization (HC) and stereocomplex (SC) formation behavior of poly(<jats:sc>l</jats:sc>-lactide) (PLLA) and poly(<jats:sc>d</jats:sc>-lactide) (PDLA) bends was investigated utilizing differential scanning calorimetry (DSC). Isothermal crystallization was performed on ESO/PLLA/PDLA blends with varying ESO contents (0, 5, 8, and 10 wt%) and temperatures (90 °C, 120 °C, and 150 °C) for a different duration (12.5, 25, and 125 min). It was found that the ESO could effectively inhibit HC crystallization and promote SC crystallization. For the sample without ESO (ESO-0), the isothermal crystallization temperature and duration had little effect on the melting behavior, whereas sample with 5 wt% ESO (ESO-5), HC crystallization decreased while SC crystallization continued to increase with increasing duration. Additionally, at higher crystallization temperatures with constant ESO content, the melting temperature of SC crystals did not significantly change, suggesting that ESO did not degrade PLLA/PDLA blends. These findings imply that ESO modifies crystallization kinetics, suppressing HC formation and enhancing SC formation, which could benefit for specific material properties and applications.","PeriodicalId":16881,"journal":{"name":"Journal of Polymer Engineering","volume":"49 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}