Iranian Polymer Journal最新文献_第3页

Long-chain branched copolyesters based on butylene succinate and ethylene terephthalate: synthesis, characterization, thermal and rheological properties 基于丁二酸丁二醇酯和对苯二甲酸乙二醇酯的长链支化共聚物：合成、表征、热性能和流变性能

IF 2.4 3区化学

Iranian Polymer Journal Pub Date : 2024-08-04 DOI: 10.1007/s13726-024-01358-x

Rezvene Nayeb Abbasi, Mehdi Rafizadeh

{"title":"Long-chain branched copolyesters based on butylene succinate and ethylene terephthalate: synthesis, characterization, thermal and rheological properties","authors":"Rezvene Nayeb Abbasi, Mehdi Rafizadeh","doi":"10.1007/s13726-024-01358-x","DOIUrl":"10.1007/s13726-024-01358-x","url":null,"abstract":"<div><p>The introduction of long-chain branches can significantly increase the melt strength and processability of the polyesters. Hence, in the present study, a number of long-chain branched copolyesters were synthesized and the effect of branching agent on the properties of copolyesters was examined. Pentaerythritol (PER) and trimellitic anhydride (TMA) were used as branching agents for the synthesis of poly(butylene succinate-<i>co</i>-ethylene terephthalate) (PBSET). Microstructure and composition of the copolyesters were characterized by <sup>1</sup>H. NMR and their successful synthesis were corroborated. DSC test proved the semi-crystalline nature of copolymers and corroborated the crystallinity decrement with branching. The crystallinity decreased by 30–47%, when long-chain branches were formed in PBEST. Interestingly, no secondary crystallization was observed using the Avrami model. Furthermore, the Avrami exponent was in the range of 2.5–4.5, signifying a 3D-crystal growth. According to the shear viscosity measurement, the branched copolymers revealed more shear thinning behavior compared to their linear counterparts, and according to the elongational viscosity measurement, the PER branched copolymer displayed a stronger strain hardening response compared to its linear and TMA branched counterparts. Moreover, the shear modulus was raised by two orders of magnitude with branching. Having higher entanglement and less mobility, the long-chain branched copolyesters displayed longer relaxation times compared to their linear counterpart. Despite the outstanding feature of the TMA, its inclusion more than 0.4% (per mol) was not possible due to its declining effect on copolymer extensibility.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"33 12","pages":"1765 - 1778"},"PeriodicalIF":2.4,"publicationDate":"2024-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13726-024-01358-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141941259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring biodegradable polymer composites for sustainable packaging: a review on properties, manufacturing techniques, and environmental impacts 探索用于可持续包装的可生物降解聚合物复合材料：性能、制造技术和环境影响综述

IF 3.1 3区化学

Iranian Polymer Journal Pub Date : 2024-08-03 DOI: 10.1007/s13726-024-01365-y

Maziyar Sabet

{"title":"Exploring biodegradable polymer composites for sustainable packaging: a review on properties, manufacturing techniques, and environmental impacts","authors":"Maziyar Sabet","doi":"10.1007/s13726-024-01365-y","DOIUrl":"https://doi.org/10.1007/s13726-024-01365-y","url":null,"abstract":"<p>Biodegradable polymer composites (BPCs) emerge as a promising solution to the escalating plastics pollution crisis. This review comprehensively analyzes their multifaceted properties, including mechanical strength, gas barrier function, and biodegradation rates, emphasizing their potential for tailored applications in food, beverage, and pharmaceutical packaging. By delving into the optimization of BPC characteristics, we illustrate how these materials can enhance product integrity and extend shelf life, crucial for maintaining the quality and safety of packaged goods. Scalable and cost-effective manufacturing techniques are critically examined, aiming to bridge the gap toward commercial viability and widespread adoption of BPCs. Beyond biodegradability, the adherence to stringent environmental standards is emphasized, promoting a circular economy within packaging through material recovery and reintegration processes. Life cycle assessment (LCA) studies are incorporated to provide a holistic environmental perspective, evaluating the overall impact of BPCs from production to disposal. Industry perspectives are integrated to assess the economic feasibility of BPC adoption across diverse sectors, analyzing potential cost benefits and challenges in integrating BPCs into existing production lines. Finally, the evolving regulatory landscape surrounding BPCs is addressed, highlighting both challenges and opportunities for their widespread adoption. This comprehensive analysis serves as a valuable resource for industry and academia, advocating for BPCs as a crucial step toward a sustainable future for packaging, combining environmental responsibility with practical application.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"82 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141941261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Application of ultrasonic radiation for the development of polypropylene/multi-walled carbon nanotubes nanocomposites and its effect on the PP chemical degradation 超声辐射在聚丙烯/多壁纳米碳管纳米复合材料开发中的应用及其对聚丙烯化学降解的影响

IF 2.4 3区化学

Iranian Polymer Journal Pub Date : 2024-07-27 DOI: 10.1007/s13726-024-01360-3

J. G. Martínez-Colunga, V. J. Cruz-Delgado, S. Sánchez-Valdés, J. M. Mata-Padilla, L. F. Ramos-de Valle, A. B. Espinoza-Martínez, R. Benavides, E. Ramírez-Vargas, J. A. Rodriguez-Gonzalez, J. F. Lara-Sanchez, T. Lozano-Ramirez

{"title":"Application of ultrasonic radiation for the development of polypropylene/multi-walled carbon nanotubes nanocomposites and its effect on the PP chemical degradation","authors":"J. G. Martínez-Colunga, V. J. Cruz-Delgado, S. Sánchez-Valdés, J. M. Mata-Padilla, L. F. Ramos-de Valle, A. B. Espinoza-Martínez, R. Benavides, E. Ramírez-Vargas, J. A. Rodriguez-Gonzalez, J. F. Lara-Sanchez, T. Lozano-Ramirez","doi":"10.1007/s13726-024-01360-3","DOIUrl":"10.1007/s13726-024-01360-3","url":null,"abstract":"<div><p>The effects of ultrasound on the chemical structure of polypropylene (PP) and its composites with different MWCNT content were investigated. The PP composites with 0%, 1%, 3%, and 5% (by weight) MWCNT were extruded using a traditional single-screw extruder and immediately US irradiated in a static mixer. The chemical structure of PP was characterized by using FTIR, DSC, TGA, and GPC to determine any changes caused by the ultrasound, and the MWCNT structure by scanning electron microscopy (SEM). The PP/MWCNT composites were characterized using Raman spectroscopy, DSC, TGA, and SEM, and tested for tensile properties, thermal stability, and electrical and thermal conductivity. The results showed that ultrasonic irradiation caused a slight oxidation in the PP structure and a 13% reduction in its molecular weight. An increase in PP crystallinity, attributed to the improved nucleating effect of the nanotubes, was also observed as a consequence of ultrasonic irradiation. The sonicated PP/MWCNT composites exhibited better dispersion of nanotubes within the PP matrix, resulting in a 30% increment in the elasticity modulus, 45 °C higher for thermal decomposition, an 11 orders of magnitude enhanced volume resistivity, and a 25% increment in thermal conductivity. Furthermore, the SEM results showed that the MWCNT structure was maintained during processing, thanks to the low shear stresses provided by the single-screw extruder, but keeping dispersion with the ultrasonic static mixer.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><img></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"33 12","pages":"1751 - 1764"},"PeriodicalIF":2.4,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141770787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

An optimized hybrid graphite/boron nitride polymer nanocomposite: enhancement in characteristic properties 优化的石墨/氮化硼杂化聚合物纳米复合材料：特性的增强

IF 2.4 3区化学

Iranian Polymer Journal Pub Date : 2024-07-23 DOI: 10.1007/s13726-024-01361-2

Debamita Mohanty, Smita Mohanty, Debmalya Roy, Sakti Ranjan Acharya, Arun Kumar

{"title":"An optimized hybrid graphite/boron nitride polymer nanocomposite: enhancement in characteristic properties","authors":"Debamita Mohanty, Smita Mohanty, Debmalya Roy, Sakti Ranjan Acharya, Arun Kumar","doi":"10.1007/s13726-024-01361-2","DOIUrl":"10.1007/s13726-024-01361-2","url":null,"abstract":"<div><p>Hybrid nanocomposites have been synthesized utilizing epoxy (E) and varying weight percentages of carbon nanotube (CNT), exfoliated graphite (EG), boron nitride (BN), and graphene (GR) as fillers. The incorporation of these nanofillers into the epoxy matrix led to significant enhancement in mechanical and thermal properties of the matrix polymer. Two specific nanocomposite formulations were optimized, one comprising 0.2% (by weight) CNT and 0.3% (by weight) BN (E/CNT<sub>1</sub>/BN<sub>2</sub>), and the other comprising 0.2% (by weight) CNT and 0.5% (by weight) EG (E/CNT<sub>1</sub>/EG<sub>3</sub>). These formulations demonstrated optimized mechanical properties like impact strength, tensile strength, thermal conductivity, and flexural strength with values of 31.46 ± 4 kJ/m<sup>2</sup>, 50.35 ± 4 MPa, 0.201 W/(mK), and 97.57 ± 3 MPa in case of E/CNT<sub>1</sub>/EG<sub>3</sub>, and 37.19 ± 3 kJ/m<sup>2</sup>, 54.59 ± 5 MPa, 0.224 W/(mK), and 116.37 ± 6 MPa for E/CNT<sub>1</sub>/BN<sub>2</sub> nanocomposite. The incorporation of fillers also resulted in notable enhancements in thermal properties, as evidenced from differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and dynamic mechanical analysis (DMA) results. The structural and morphological properties of the nanocomposite were analyzed using scanning electron microscopy (SEM). Furthermore, flame properties of the optimized composite were investigated through cone calorimetry tests while the corresponding char residue was analyzed by employing SEM.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"33 12","pages":"1779 - 1791"},"PeriodicalIF":2.4,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141770793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Estimation and optimization of nerve cells’ proliferation on electrospun nanofibrous scaffolds 电纺纳米纤维支架上神经细胞增殖的估算与优化

IF 2.4 3区化学

Iranian Polymer Journal Pub Date : 2024-07-23 DOI: 10.1007/s13726-024-01347-0

Fatemeh Zamani, Mohammad Amani-Tehran

{"title":"Estimation and optimization of nerve cells’ proliferation on electrospun nanofibrous scaffolds","authors":"Fatemeh Zamani, Mohammad Amani-Tehran","doi":"10.1007/s13726-024-01347-0","DOIUrl":"10.1007/s13726-024-01347-0","url":null,"abstract":"<div><p>Due to the importance of electrospun nanofibrous scaffolds in tissue engineering to regenerate and repair nerve injuries, the main purpose of this study is to present an optimized physical structure of poly(lactic-<i>co</i>-glycolic acid) (PLGA) nanofibrous scaffold as a biodegradable polymer that can increase nerve cells’ growth and proliferation. The effect of each scaffold property on the proliferation of the cells is assessed by estimating and modeling the rate of cell proliferation based on the scaffold’s structural characteristics, and the cell growth behavior is analyzed considering the changes in physical properties. Also, a statistical model is presented to estimate and optimize the number of proliferated cells by simultaneously considering the most effective electrospinning parameters related to the scaffold’s physical structure, utilizing the response surface methodology. The obtained results introduce the scaffold and fiber’s porosity as the most important scaffold property on cell growth enhancement. The optimal amounts of initial properties are 3% (w/v) and 2.5 m/s for solution concentration, and the collector linear velocity, respectively, based on the designed model, as well as the amount of the optimum estimated results is 1.359, which did not have a significant difference with the experimental results of these points. The scaffold suggested by the model had proper fiber alignment and diameter, providing the most optimal structure, adhesion, and cell proliferation in the desired direction by generating optimum porosity and hydrophilicity.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"33 12","pages":"1713 - 1724"},"PeriodicalIF":2.4,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141785019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Kinetics study of catalytic pyrolysis of polystyrene polymer using response surface method 利用响应面法对聚苯乙烯聚合物催化热解进行动力学研究

IF 2.4 3区化学

Iranian Polymer Journal Pub Date : 2024-07-22 DOI: 10.1007/s13726-024-01362-1

Nasrollah Majidian, Mahyar Saleh, Mohammad Samipourgiri

{"title":"Kinetics study of catalytic pyrolysis of polystyrene polymer using response surface method","authors":"Nasrollah Majidian, Mahyar Saleh, Mohammad Samipourgiri","doi":"10.1007/s13726-024-01362-1","DOIUrl":"10.1007/s13726-024-01362-1","url":null,"abstract":"<div><p>The present study investigates the kinetics of polystyrene catalytic pyrolysis using the response surface method. Polystyrene is one of the most widely used polymers that decomposes slowly in the environment. Two models (nth-order reaction and first-order reaction) have been employed to examine the catalytic pyrolysis process. One-liter hydrothermal reactor is filled with 100 g of polystyrene granules that have an estimated diameter of 1 mm and an Iranian natural zeolite catalyst. 100 mL of <i>n</i>-hexane and the catalyst are added to the reactor for improved mixing and to stop the catalyst particles from escaping. Then, the reactor is sealed and when the polymer melts down, nitrogen gas is injected with a flow rate of 100 mL/min. Three variables of time (30–120 min), temperature (100–300 °C), and the amount of catalyst (2, 4, 6 g) were selected as independent variables. For statistical analysis, the second-order model (response surface methodology) was used to find the relationship between independent and dependent variables. The results have shown that temperature and time have a significant effect on pyrolysis efficiency and the Group Method of Data Handling neural network was used to investigate the effect of parameters such as time, temperature, amount of catalyst, polystyrene amount, and pyrolysis mass volume. The findings illustrated that temperature has the greatest effect on the pyrolysis product and the results of kinetic investigation have shown that the nth-order reaction is more suitable for the kinetic justification of all experimental data because the degree of compatibility between experimental data and modeling results is higher than the first-order reaction.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"33 12","pages":"1793 - 1806"},"PeriodicalIF":2.4,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141742488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Preparation of rare-earth LDHs stabilizers and their effects on the thermal stability of poly(vinyl chloride) 稀土 LDHs 稳定剂的制备及其对聚氯乙烯热稳定性的影响

IF 3.1 3区化学

Iranian Polymer Journal Pub Date : 2024-07-22 DOI: 10.1007/s13726-024-01363-0

Peijie Jia, Jinsheng Duan, Zhaogang Liu, Yilin Li, Guifang Du, Yanhong Hu, Jinxiu Wu

{"title":"Preparation of rare-earth LDHs stabilizers and their effects on the thermal stability of poly(vinyl chloride)","authors":"Peijie Jia, Jinsheng Duan, Zhaogang Liu, Yilin Li, Guifang Du, Yanhong Hu, Jinxiu Wu","doi":"10.1007/s13726-024-01363-0","DOIUrl":"https://doi.org/10.1007/s13726-024-01363-0","url":null,"abstract":"<p>This study delves into the exploration of zinc lanthanum layered double hydroxides (Zn–La-LDHs) and zinc aluminum lanthanum layered double hydroxides (Zn–Al–La-LDHs) as potential thermal stabilizers for poly(vinyl chloride) (PVC). The investigation aims to elucidate the synergistic effects of the above rare-earth (RE) LDHs in combination with dibenzoylmethane (β-diketone), pentaerythritol (PE), and other commonly employed heat stabilizers on PVC’s crucial properties, including thermal stability, plasticization, and mechanical strength. The experimental findings demonstrated notable enhancements in PVC’s thermal stability upon incorporation of RE-LDHs, β-diketone, and PE. This enhancement is attributed to the ability of RE-LDHs to effectively hinder degradation reactions within the PVC matrix, thereby increasing its degradation activation energy and overall stability. Moreover, the integration of RE-LDHs contributes significantly to improving PVC’s plasticization and mechanical properties, rendering it suitable for a diverse range of applications. While both Zn–La-LDHs and Zn–Al–La-LDHs exhibited good thermal stability, Zn–La-LDHs demonstrated slightly inferior performance compared to Zn–Al–La-LDHs. This distinction underscores the importance of considering the specific characteristics of each LDHs compound when formulating PVC stabilizer systems. Furthermore, this study highlights the potential of RE-LDHs as eco-friendly alternatives to traditional PVC stabilizers, offering opportunities to develop sustainable stabilizer formulations that address environmental concerns associated with conventional stabilizers. In conclusion, the synthesis and application of RE-LDHs represent a significant advancement in PVC stabilization technology, providing a viable and environmentally conscious approach to enhancing the performance and longevity of PVC-based materials.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"13 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141742691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Thermal stability of flexible polyurethane foams obtained from reactive phosphorus-containing polyols dispersed in polyethylene glycol 由分散在聚乙二醇中的活性含磷多元醇获得的柔性聚氨酯泡沫的热稳定性

IF 2.4 3区化学

Iranian Polymer Journal Pub Date : 2024-07-22 DOI: 10.1007/s13726-024-01351-4

Stanley Olivier Kanemoto, Pierre Christelle Mvondo Onana, Arnaud Maxime Yona Cheumani, Maurice Kor Ndikontar, Madurai Suguna Lakshmi

{"title":"Thermal stability of flexible polyurethane foams obtained from reactive phosphorus-containing polyols dispersed in polyethylene glycol","authors":"Stanley Olivier Kanemoto, Pierre Christelle Mvondo Onana, Arnaud Maxime Yona Cheumani, Maurice Kor Ndikontar, Madurai Suguna Lakshmi","doi":"10.1007/s13726-024-01351-4","DOIUrl":"10.1007/s13726-024-01351-4","url":null,"abstract":"<div><p>Flame-retardant and flexibility-enhanced phosphorus-polyurethane foams (P-PUF)s were prepared from phosphorus–hydroxyl precursors and polyethylene glycol (PEG) as polyols. In the first step, three different precursors, such as tris-(5-hydroxypentyl) phosphate (P-Pen-OHs), tris-(4-hydroxybutyl) phosphate (P-But-OHs), and tris-(3-hydroxypropyl) phosphate (P-Pro-OHs) were synthesized and used as flame retardants. In the second step, the precursors were made to react with toluene-2,4-diisocyanate to modify the flexibility and flame retardancy properties of the P-PUF product. The P-PUFs were obtained by a one-shot process system and then analyzed for their thermal stability, flame retardancy, and compressive strength properties. Among all P-PUF samples, P-But-PUF showed the best compressive properties with a Young’s modulus value of 0.167 MPa. The compressive properties of P-PUF are found to be proportional to their relative density. These results show that the chemical structure of the phosphorus–hydroxyl precursor had a slight effect on the compressive properties as well as the porosity of the final materials. All the foams had T<sub>g</sub> values in the range of 58–70 ℃ and their thermal degradation in a nitrogen atmosphere started around 100 ℃. From the limiting oxygen index test, P-PUF samples are considered marginally stable materials with a slow-burning behavior that confirms the efficiency of reactive phosphorus-based flame retardants.</p><h3>Graphic abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"33 12","pages":"1701 - 1711"},"PeriodicalIF":2.4,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13726-024-01351-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141742487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modification of fly ash cenospheres by 3-glycidyloxypropyl trimethoxysilane (GPTMS) for anticorrosive coating applications 用 3-缩水甘油氧基丙基三甲氧基硅烷 (GPTMS) 改性粉煤灰仙人球，用于防腐涂层应用

IF 3.1 3区化学

Iranian Polymer Journal Pub Date : 2024-07-12 DOI: 10.1007/s13726-024-01359-w

Mithilesh Kogje, Siddhesh Mestry, Jyoti Darsan Mohanty, S. T. Mhaske

{"title":"Modification of fly ash cenospheres by 3-glycidyloxypropyl trimethoxysilane (GPTMS) for anticorrosive coating applications","authors":"Mithilesh Kogje, Siddhesh Mestry, Jyoti Darsan Mohanty, S. T. Mhaske","doi":"10.1007/s13726-024-01359-w","DOIUrl":"https://doi.org/10.1007/s13726-024-01359-w","url":null,"abstract":"<p>The present work focused on the functionalization of fly ash cenospheres (FACs) by GPTMS for anticorrosive applications. FACs are an industrial waste product from coal industry that possesses valuable properties such as lightweight, low water absorption, corrosion resistance, and chemical inertness. Epoxy is one of the best materials for superior corrosion performance and excellent substrate adhesion and therefore was chosen as the base matrix. 3-Glycidyloxypropyl trimethoxysilane (GPTMS) was selected as the suitable silane functionalization agent (with the variation of 2, 4, and 6 wt% of cenospheres due to its compatibility with epoxy resin). GPTMS can help corrosion control by forming dense Si–O–Si networks that act as a protective barrier against water, aggressive ions, etc. FTIR and XRD analyses studied the primary structural confirmation of silane-modified cenosphere, while the morphology was studied by SEM analysis. TGA and DTG curves investigated the thermal properties of the coatings, while EIS studies evaluated the anticorrosive attributes. The EIS results showed that the corrosion rate decreased as the percentage of silane increased in the coating, which indicates the superior anticorrosion behaviour of the 6 GPTMS FAC–epoxy sample compared to others.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"38 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141612144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 characterization of novel pectin-based copper oxide nanocomposite and its application for removal and photocatalytic degradation of methylene blue from aqueous solution 新型果胶基氧化铜纳米复合材料的合成与表征及其在去除和光催化降解水溶液中亚甲基蓝中的应用

IF 3.1 3区化学

Iranian Polymer Journal Pub Date : 2024-07-10 DOI: 10.1007/s13726-024-01355-0

Ravi Kumar, Poorn Prakash Pande, Arbind Chaurasiya, Kajal Kumar Dey, Nandita Kushwaha, Praveen Kumar, Kopal Kashaudhan

{"title":"Synthesis and characterization of novel pectin-based copper oxide nanocomposite and its application for removal and photocatalytic degradation of methylene blue from aqueous solution","authors":"Ravi Kumar, Poorn Prakash Pande, Arbind Chaurasiya, Kajal Kumar Dey, Nandita Kushwaha, Praveen Kumar, Kopal Kashaudhan","doi":"10.1007/s13726-024-01355-0","DOIUrl":"https://doi.org/10.1007/s13726-024-01355-0","url":null,"abstract":"<p>The pectin-modified hydrogel-copper oxide nanocomposite (PMH@CuO) has been successfully synthesized using free radical polymerization method by incorporating CuO nanoparticles into pectin-modified hydrogel (PMH) network. The target of this work was to examine the usage of PMH@CuO nanocomposite for eliminating methylene blue (MB) dye from aqueous solutions. The CuO nanoparticles (NPs) as well as PMH@CuO nanocomposite have been characterized by several techniques, viz<i>.,</i> UV–visible and FTIR spectroscopies, TGA, <i>ΔpH</i><sub><i>pzc</i></sub>, XRD, and SEM analyses. The percentage removal of MB dye has been found to be 98.41% at pH of 7 during 30 min with dye concentration of 50 mg/L, and dosage of adsorbent 1.2 g/L, at 25°C. The adsorption kinetics has been found to fit perfectly with pseudo-second-order kinetic model. The adsorption data fit appreciably with Langmuir isotherm model, representing monolayer adsorption with maximum adsorption capacity (<i>q</i><sub><i>e</i></sub>) of 132.27 mg/g at 25℃. A thermodynamic analysis revealed that the MB dye adsorption was a spontaneous and exothermic process and resulted in lowering of entropy. The photocatalytic activity of the PMH@CuO nanocomposite has been found to be quite notable as the degradation of 80.20% of MB dye was observed within 60 min under visible light. Moreover, the synthesized nanocomposite was reusable up to five adsorption and desorption cycles with 86.8% of adsorption and 85.4% of desorption in fifth cycle.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"40 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141568102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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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