Polymer Bulletin最新文献_第8页

Improving the processing and mechanical properties of 3D printable biocomposite based on polylactide, sediment rock, and natural beeswax 改进基于聚乳酸、沉积岩和天然蜂蜡的3D打印生物复合材料的加工和力学性能

IF 3.1 3区化学

Polymer Bulletin Pub Date : 2024-12-29 DOI: 10.1007/s00289-024-05614-1

Bogna Sztorch, Eliza Romanczuk-Ruszuk, Julia Głowacka, Magdalena Kustosz, Tomasz Osiecki, Paulina Jakubowska, Holger Seidlitz, Robert E. Przekop

{"title":"Improving the processing and mechanical properties of 3D printable biocomposite based on polylactide, sediment rock, and natural beeswax","authors":"Bogna Sztorch, Eliza Romanczuk-Ruszuk, Julia Głowacka, Magdalena Kustosz, Tomasz Osiecki, Paulina Jakubowska, Holger Seidlitz, Robert E. Przekop","doi":"10.1007/s00289-024-05614-1","DOIUrl":"10.1007/s00289-024-05614-1","url":null,"abstract":"<div><p>Polylactide is a material often used in additive techniques. Due to poor mechanical properties, there is a constant search for additives, fillers, and modifiers that could improve these properties. Natural fillers and additives are promising compounds because they can improve the properties of the composite and at the same time are environmentally friendly. This work concerns the first-time modification of PLA using the Opoka sedimentary rock, modified with natural beeswax and commercially available wax. The addition of sedimentary rock caused the natural color of the obtained fibers, and it was found that the Opoka addition has a positive effect on the processing and printing parameters, allowing for a significant reduction in the operating temperature and the extrusion and printing speed, as well as better interlayer adhesion and adhesion to the printer bed, which is particularly important in the case of 3D printing. The obtained materials were characterized by a higher degree of crystallinity, and better mechanical and surface parameters (significantly higher contact angles and hydrophobic properties).</p></div>","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"82 7","pages":"2523 - 2553"},"PeriodicalIF":3.1,"publicationDate":"2024-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143818333","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

Response surface methodology for controlling the release of anthocyanin from sago starch films 控制西米淀粉膜中花青素释放的响应面法

IF 3.1 3区化学

Polymer Bulletin Pub Date : 2024-12-27 DOI: 10.1007/s00289-024-05615-0

Nurul Husna Che Hamzah, Nozieana Khairuddin, Ida Idayu Muhamad, Shahrul Razid Sarbini

{"title":"Response surface methodology for controlling the release of anthocyanin from sago starch films","authors":"Nurul Husna Che Hamzah, Nozieana Khairuddin, Ida Idayu Muhamad, Shahrul Razid Sarbini","doi":"10.1007/s00289-024-05615-0","DOIUrl":"10.1007/s00289-024-05615-0","url":null,"abstract":"<div><p>The use of anthocyanin as a natural colorant in the food industry has been widely established because it is non-toxic. Because of that, the role of this colorant is expanding to food packaging as intelligent packaging is now becoming the trend for urban lifestyles. In this study, biodegradable packaging from starch-based film incorporated with <i>Brassica oleracea</i> anthocyanin was developed by casting technique. The research focused on optimization strategies, utilizing response surface methodology (RSM) to examine how the concentration of anthocyanin in films, along with buffer pH, temperature, and contact time variables, affects total color difference (TCD) and absorbance values, which are indicative of anthocyanin release. The experiments were designed using a Box–Behnken design (BBD) by applying 29 full factorial designs with five center points. The collected experimental data were used to fit a second-order polynomial equation through multiple regression analysis and were then analyzed using suitable statistical techniques. By utilizing 3-D response surface and contour plots generated from mathematical models, the optimal conditions were identified. The optimum formulation of this anthocyanin incorporated in sago starch films was as follows: anthocyanin concentration 8.2 g, pH of buffer solution 7.9, surrounding temperature 4.1 °C, and contact time 35.8 min. Under these conditions, the films’ reaction produced the highest color difference and lowest absorbance which were 5.7 and 0.0004, respectively. This outcome demonstrates that optimization methods can reduce the release of anthocyanins from starch films, highlighting a significant color variation that enhances its suitability for advanced food packaging purposes. </p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"82 7","pages":"2507 - 2522"},"PeriodicalIF":3.1,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143818278","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

Active edible food packaging materials for confectionery products: applications, challenges, and future directions 糖果产品的活性食用食品包装材料：应用、挑战和未来方向

IF 3.1 3区化学

Polymer Bulletin Pub Date : 2024-12-24 DOI: 10.1007/s00289-024-05604-3

Moslem Sabaghi

引用次数: 0

Probing the effects of chitosan-based membranes with different molecular weights on their biocompatibility and antimicrobial activity 探讨不同分子量壳聚糖基膜对其生物相容性和抗菌活性的影响

IF 3.1 3区化学

Polymer Bulletin Pub Date : 2024-12-23 DOI: 10.1007/s00289-024-05619-w

Juliana Bezerra Macedo, Daniela Bezerra Macedo, Cintia Cristina Santi Martignago, Ana Claudia Muniz Renno, Rafaela Cristina Sanfelice, Carla Roberta Tim, Lívia Assis, Adriana Pavinatto

{"title":"Probing the effects of chitosan-based membranes with different molecular weights on their biocompatibility and antimicrobial activity","authors":"Juliana Bezerra Macedo, Daniela Bezerra Macedo, Cintia Cristina Santi Martignago, Ana Claudia Muniz Renno, Rafaela Cristina Sanfelice, Carla Roberta Tim, Lívia Assis, Adriana Pavinatto","doi":"10.1007/s00289-024-05619-w","DOIUrl":"10.1007/s00289-024-05619-w","url":null,"abstract":"<div><p>Chitosan is a polysaccharide widely used in biomedical applications due to its bioactivity, which can be modulated by its structural characteristics. Among these, molecular weight is one of those that most influences its action. In this context, this study aimed to evaluate the bioactivity of membranes formed by high (HMWChi) and low (LMWChi) molecular weight chitosans and associated with turmeric (HMWChi/Tur and LMWChi/Tur), produced by the casting technique. The membranes were characterized physicochemically and morphologically. Its bioactivity was evaluated through the inhibition halo formed on bacterial strains and verifying its biocompatibility in fibroblast cell lines (L929), performed by alamarBlue® (Metabolic activity/viability) and <i>PicoGreen</i> assays (DNA proliferation). Self-supporting and homogeneous membranes were obtained. FTIR spectra show the main vibrational bands for the chemical groups of chitosan and contact angle results show that turmeric-containing membranes are more hydrophilic than pure chitosan. The presence of the inhibition halo was observed in both bacterial cultures for all membranes, with LMWChi and LMWChi/Tur showing a greater inhibitory effect. The membranes produced did not present a cytotoxic effect, as they induced an increase in cell proliferation. In general, LMWChi/Tur provided greater cell proliferation, suggesting that low molecular weight chitosan is the most promising material for application as dressings.</p></div>","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"82 7","pages":"2459 - 2474"},"PeriodicalIF":3.1,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143818164","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

Performance of kraft lignin as a filler in PLA composites via the acetic acid casting technique 醋酸铸造法研究硫酸盐木质素在PLA复合材料中的填充性能

IF 3.1 3区化学

Polymer Bulletin Pub Date : 2024-12-21 DOI: 10.1007/s00289-024-05628-9

Jordana Corralo Spada, Alessandra Andrade Lopes, Natália Barros, Júlia Ribeiro Sarkis

{"title":"Performance of kraft lignin as a filler in PLA composites via the acetic acid casting technique","authors":"Jordana Corralo Spada, Alessandra Andrade Lopes, Natália Barros, Júlia Ribeiro Sarkis","doi":"10.1007/s00289-024-05628-9","DOIUrl":"10.1007/s00289-024-05628-9","url":null,"abstract":"<div><p>Poly(lactic acid) (PLA) is a bio-based polymer considered a sustainable alternative to petrochemical-derived plastics. This study explores the solubilization of PLA in acetic acid, aiming to enhance eco-friendly production methods. PLA was exposed to acetic acid concentrations of 50%, 60%, 70%, and 100% at temperatures ranging from 20 to 100 °C, with dissolution times extending up to 24 h. Solubilization was categorized as “dissolved” or “not dissolved” based on visual inspection. Selected samples underwent Fourier transform infrared spectroscopy, thermogravimetric analysis, and X-ray diffraction to evaluate chemical structure, thermal stability, and crystallinity. PLA dissolved within 6 h at temperatures above 80 °C with at least 60% acetic acid, and higher acid concentrations further reduced dissolution times. While the PLA chemical structure showed no significant alterations, thermal stability was slightly reduced, and crystallinity was significantly affected by both solvent concentration and temperature. Films were successfully formed only at 120 °C with 100% acetic acid. Additionally, kraft lignin powder (KLP) derived from Pinus was incorporated into PLA composites through casting in acetic acid, with KLP concentrations of 5%, 10%, and 25%. At 5% KLP, dispersion was good, while higher KLP contents led to particle aggregation. The inclusion of 5% KLP increased hydrophilicity (~ 11%) and reduced tensile strength (~ 40%), likely due to KLP trimodal particle size distribution (0.1 to nearly 500 μm), which made the film matrix more heterogeneous. However, the addition of 5% lignin had minimal impact on composite properties, making it a promising option for cost reduction as lignin is a by-product.</p></div>","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"82 7","pages":"2419 - 2439"},"PeriodicalIF":3.1,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143818063","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

Blueberry-shaped Fe2O3-FeOCl/poly-1H-pyrrole nanocomposite for ultraviolet and visible light sensing 蓝莓状Fe2O3-FeOCl/聚氢吡咯纳米复合材料的紫外和可见光传感

IF 3.1 3区化学

Polymer Bulletin Pub Date : 2024-12-21 DOI: 10.1007/s00289-024-05625-y

Mohamed Rabia, Fatemah H. Alkallas, Tahani A. Alrebdi, Amira Ben Gouider Trabelsi

{"title":"Blueberry-shaped Fe2O3-FeOCl/poly-1H-pyrrole nanocomposite for ultraviolet and visible light sensing","authors":"Mohamed Rabia, Fatemah H. Alkallas, Tahani A. Alrebdi, Amira Ben Gouider Trabelsi","doi":"10.1007/s00289-024-05625-y","DOIUrl":"10.1007/s00289-024-05625-y","url":null,"abstract":"<div><p>A highly efficient Fe<sub>2</sub>O<sub>3</sub>-FeOCl/poly-1H-pyrrole (Fe<sub>2</sub>O<sub>3</sub>-FeOCl/P1HP) nanocomposite thin-film optoelectronic device for photon sensing in both UV and visible light has been successfully fabricated in a one-step process. The synthesis involves the oxidation of 1H-pyrrole using (NH<sub>4</sub>)<sub>2</sub>S<sub>2</sub>O<sub>8</sub> and Fe(NO<sub>3</sub>)<sub>3</sub>, forming a thin-film nanocomposite. With a bandgap of 2.35 eV and a distinctive blueberry-shaped morphology with particle sizes between 10 and 20 nm, this material demonstrates significant potential for light sensing applications. Its performance was assessed through electrical measurements, including current density under both illuminated (J<sub>ph</sub>) and dark (J<sub>o</sub>) conditions. The device produced J<sub>ph</sub> values of 0.23, 0.22, 0.17, and 0.04 mA/cm<sup>2</sup> with Jo measured at 0.005 mA/cm<sup>2</sup> while exposed to photons with energies of 1.8, 2.3, 2.8, and 3.6 eV, i.e., 730, 540, 440, and 340 nm wavelengths, correspondingly. Responsivity (R) was observed to decrease from 2.3 mA/W at 340 nm to 1.8 mA/W at 540 nm, while detectivity (D) fell from 0.52 × 10⁹ Jones to 0.4 × 10⁹ Jones over the same wavelength range. At 730 nm, both R and D values dropped significantly to 0.4 mA/W and 0.1 × 10⁹ Jones, correspondingly. These positive results from the electrical tests highlight the efficiency of the light sensor across both the UV and visible spectra, making it ideal for industrial applications.</p></div>","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"82 7","pages":"2441 - 2458"},"PeriodicalIF":3.1,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143818131","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

Study of core shell structure and its effect on thermal, optical, electrical and magnetic properties of PPY-Ni0.5Co0.5Fe2O4 nanocomposites py - ni0.5 co0.5 fe2o4纳米复合材料芯壳结构及其对其热、光、电、磁性能的影响研究

IF 3.1 3区化学

Polymer Bulletin Pub Date : 2024-12-20 DOI: 10.1007/s00289-024-05606-1

S. Swati, B. Anupama, Rajni Shukla, P. Vikram

{"title":"Study of core shell structure and its effect on thermal, optical, electrical and magnetic properties of PPY-Ni0.5Co0.5Fe2O4 nanocomposites","authors":"S. Swati, B. Anupama, Rajni Shukla, P. Vikram","doi":"10.1007/s00289-024-05606-1","DOIUrl":"10.1007/s00289-024-05606-1","url":null,"abstract":"<div><p>Nanocomposites of polypyrrole (PY) and Ni<sub>0.5</sub>Co<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub> (NC) are prepared by chemical oxidation polymerisation with varying amount of NC. X-ray diffraction confirms their synthesis, and crystallite size (D) of NC particles is found to be in nanometre range. Core shell morphology is observed with the help of scanning electron microscope (SEM) images. Effect of this coating of PY on NC nanoparticles in nanocomposites induces variation in thermal stability pattern as compared to pure PY and NC observed by TGA. Although the shift in optical energy band gap is small, there is a complete transformation of magnetic behaviour of PY. It changes from diamagnetic PY to ferromagnetic nanocomposite material due to the ferromagnetic ferrite at the core. Electric conductivity of the NC material is very small which is enhanced by the PY shell material and as a result nanocomposites obtained electric as well as magnetic properties. This makes them valuable materials for electromagnets and electromagnetic shielding materials. Dielectric behaviour of the nanocomposites is also studied using impedance spectroscopy. All the nanocomposite has positive dielectric constant except the one with highest amount of NC which have negative dielectric constant. This unique negative dielectric constant of the nanocomposite is useful in superconductors.</p></div>","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"82 7","pages":"2405 - 2418"},"PeriodicalIF":3.1,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143818316","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

Magnetic porous superabsorbent: synthesis, characterization, and efficient adsorption of methylene blue 磁性多孔高吸附剂：合成、表征及高效吸附亚甲基蓝

IF 3.1 3区化学

Polymer Bulletin Pub Date : 2024-12-19 DOI: 10.1007/s00289-024-05627-w

Xiangpeng Wang, Yunxiang Zheng, Chunxiao Zhang, Chunmao Chen

引用次数: 0

Synthesis of an O,N-rich porous organic polymer: efficient removal of metronidazole from aqueous solutions 富O， n多孔有机聚合物的合成：水溶液中甲硝唑的高效去除

IF 3.1 3区化学

Polymer Bulletin Pub Date : 2024-12-18 DOI: 10.1007/s00289-024-05626-x

Fatemeh Mozaffari, Mohammad Ali Bodaghifard

{"title":"Synthesis of an O,N-rich porous organic polymer: efficient removal of metronidazole from aqueous solutions","authors":"Fatemeh Mozaffari, Mohammad Ali Bodaghifard","doi":"10.1007/s00289-024-05626-x","DOIUrl":"10.1007/s00289-024-05626-x","url":null,"abstract":"<div><p>Pharmaceutical residues refer to the remnants of drugs used in the medical and food industries that have not fully decomposed. These residues pose a significant threat to human health and natural ecosystems, making them a growing global concern. Porous organic polymers (POPs) show promise as efficient adsorbents for the removal of pharmaceutical pollutants in water. In the present study, an <i>O,N</i>-rich porous organic polymer (ONR-POP) was synthesized via Schiff’s base condensation under solvothermal condition. The performance of the prepared ONR-POP as an adsorbent for the removal of metronidazole from aqueous solutions was evaluated. The structural properties of synthesized ONR-POP were identified by FT-IR, XRD, SEM, EDS, TGA, and BET analyses. The adsorption process of metronidazole using ONR-POP was investigated, and the highest removal efficiency of metronidazole (88%) was achieved after 30 min at 25°C and pH 4. The study of adsorption isotherms and kinetics models indicated that ONR-POP follows the Langmuir adsorption model with a high correlation coefficient of <i>R</i><sup><i>2</i></sup> = 0.991 and a pseudo-second-order kinetic model. Additionally, the thermodynamic data indicate that the adsorption process is exothermic and spontaneous. These results confirm that porous organic polymers can be suitable candidates for the adsorption of pharmaceutical pollutants from water and wastewater.</p></div>","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"82 7","pages":"2351 - 2372"},"PeriodicalIF":3.1,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143818263","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

Tribological gradients of acid-aged coir and coconut husk powder reinforced LDPE plastic under different normal load conditions for potential applications in oil and gas industries 酸老化椰壳和椰壳粉增强LDPE塑料在不同正常载荷条件下的摩擦学梯度在石油和天然气工业中的潜在应用

IF 3.1 3区化学

Polymer Bulletin Pub Date : 2024-12-18 DOI: 10.1007/s00289-024-05623-0

David O. Obada, Danjuma S. Yawas, Kazeem A. Salami, Ayodeji N. Oyedeji, Abdulrahman Jimoh, Abdulrrahman Abdullahi

引用次数: 0