Journal of Polymers and the Environment最新文献_第8页

Preparation, Evaluation and Field Application of Thermally Induced Crosslinked Polymer Gel Leakage Plugging Agent 热诱导交联聚合物凝胶堵漏剂的制备、评估和现场应用

IF 4.7 3区工程技术

Journal of Polymers and the Environment Pub Date : 2024-06-22 DOI: 10.1007/s10924-024-03334-1

Jindong Chen, Hengbin Qiu, Lesly Dasilva Wandji Djouonkep, Junxian Lv, Binqiang Xie

{"title":"Preparation, Evaluation and Field Application of Thermally Induced Crosslinked Polymer Gel Leakage Plugging Agent","authors":"Jindong Chen, Hengbin Qiu, Lesly Dasilva Wandji Djouonkep, Junxian Lv, Binqiang Xie","doi":"10.1007/s10924-024-03334-1","DOIUrl":"10.1007/s10924-024-03334-1","url":null,"abstract":"<div><p>Addressing the complex issue of lost circulation in drilling operations is crucial as it increases nonproductive time and costs. Conventional gel plugging materials often exhibit low temperature resistance, poor pumpability, and low pressure-bearing capacity. To overcome the limitations, a self-made polymer (HSA) was initially synthesized and mixed with two crosslinker agents (MBA/PEI) at room temperature to induce a new type of high-temperature-resistant and pressure-resistant polymer gel agent (HSA-G). Investigating the gel strength and plugging capacity, the vertical inverted tube observation, 71-type high-temperature and high-pressure (HTHP) instruments, and high-pressure filter with varying fracture cracks (3–5 mm) were employed. HSA-G demonstrated excellent gelation strength for 4–5 h at 140 °C, while retaining more than 57% of its gel strength after aging at 140 °C for 144 h, which is 3 times higher than the commercially available hydrolyzed polyacrylamide (HPAM + PEI). The excellent performance was attributed to the synergy between PEI-MBA, which induces tight-crosslinked interconnected structure within HSA-G, mitigating fluid losses to only 72 mL compared to 194 mL for HPAM-G, under 8.5 MPa in the HTHP sand bed at 140 °C. In the fracture leakage simulations using a 5 mm crack performed at 6 MPa at room temperature, the filtration loss of HSA-G is 300 mL, almost half that of HPAM-G, showcasing its superior plugging and high-pressure bearing performance. In conclusion, HSA-G has not only demonstrated operational effectiveness in reducing downtime costs and fluid losses but can also temporally replace cement plugging to prevent reservoir contamination in alignment with environmentally friendly practices.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141496136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of Anti-Biofilm and in Vitro Wound Healing Activity of Bacterial Cellulose Loaded with Nanoparticles and Borax 纳米颗粒和硼砂负载细菌纤维素的抗生物膜和体外伤口愈合活性评估

IF 4.7 3区工程技术

Journal of Polymers and the Environment Pub Date : 2024-06-20 DOI: 10.1007/s10924-024-03308-3

Nur Bozbeyoglu Kart, Mine Sulak, Doğukan Mutlu, Volkan Kuzucu, Sevki Arslan, Nazime Mercan Dogan

{"title":"Evaluation of Anti-Biofilm and in Vitro Wound Healing Activity of Bacterial Cellulose Loaded with Nanoparticles and Borax","authors":"Nur Bozbeyoglu Kart, Mine Sulak, Doğukan Mutlu, Volkan Kuzucu, Sevki Arslan, Nazime Mercan Dogan","doi":"10.1007/s10924-024-03308-3","DOIUrl":"10.1007/s10924-024-03308-3","url":null,"abstract":"<div><p>Biofilms are a severe problem for public health because of the contributing recurrence of infections. Therefore, combating biofilms is a critical issue. In our study, we loaded zinc oxide (ZnO), zinc oxide borax (ZnOBorax), zinc copper oxide (ZnCuO<sub>2</sub>) nanoparticles and borax into bacterial cellulose (BC) to impart anti-biofilm and wound healing activity. The prepared BC loaded with nanoparticles (BC–NPs) was analysed via scanning electron microscopy. The nanoparticles’ geometric structure and placement in BC fibres were observed. We evaluated the biofilm inhibition and biofilm degradation activities of the BC–NPs against some pathogens via a crystal violet (CV) assay and XTT (2,3-bis(2-methoxy-4-nitro-5-sulfophenyl)-2 H-tetrazolium-5-carboxanilide) reduction assay. The effects of BC–NPs on cell proliferation and wound-healing ability were analysed in L929 cell line. BC–NPs exhibited better biofilm degradation activity than biofilm inhibition activity. According to the results of the CV assay, BC–ZnONPs, BC–Borax and BC–ZnOBoraxNPs inhibited 65.53%, 71.74% and 66.60% of biofilm formation of <i>Staphylococcus aureus</i>, respectively. BC–ZnCuO<sub>2</sub>NPs showed the most degradation activity on <i>Pseudomonas aeruginosa</i> and <i>Listeria innocua</i> biofilms. The XTT reduction assay results indicated a considerable reduction in the metabolic activity of the biofilms. Moreover, compared to the control group, BC loaded with borax and ZnO nanoparticle promoted cell migration without cytotoxicity.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10924-024-03308-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141496135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Toughened Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)/Epoxidized Natural Rubber Blends Fabricated by Dynamic Vulcanization and Interfacial Compatibilization 通过动态硫化和界面共混制造的增韧聚（3-羟基丁酸-3-羟基戊酸）/环氧天然橡胶混合物

IF 4.7 3区工程技术

Journal of Polymers and the Environment Pub Date : 2024-06-20 DOI: 10.1007/s10924-024-03283-9

Napat Tomano, Tim A. Osswald, Pranut Potiyaraj, Orathai Boondamnoen, Chuanchom Aumnate

{"title":"Toughened Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)/Epoxidized Natural Rubber Blends Fabricated by Dynamic Vulcanization and Interfacial Compatibilization","authors":"Napat Tomano, Tim A. Osswald, Pranut Potiyaraj, Orathai Boondamnoen, Chuanchom Aumnate","doi":"10.1007/s10924-024-03283-9","DOIUrl":"10.1007/s10924-024-03283-9","url":null,"abstract":"<div><p>Biodegradable polymers, particularly Polyhydroxyalkanoates (PHAs) and their derivatives, have garnered increasing attention across diverse industries owing to their distinct advantages such as bio-based sourcing, biocompatibility, and impressive biodegradability performance. Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) is one of the most attractive members of PHAs with a great potential to replace conventional non-biodegradable polymers. However, one critical drawback restricting PHBV usage is its thermal instability, which could bring about a narrow processing window, especially for conventional melt processing methods such as injection molding. Moreover, the high crystallinity and slow nucleation rate make PHBV brittle, leading to poor mechanical performance. This study incorporated epoxidized natural rubbers (ENR-25 and ENR-50) into PHBV through a melt blending process to enhance PHBV toughness and flexibility. Incorporation of 5wt% polybutadiene grafted maleic anhydride (PB-g-MA) as a compatibilizer notably enhances mechanical properties. Furthermore, the study introduces the concept of thermoplastic vulcanizate (TPV) through melt blending using dynamic vulcanization (DV) to enhance mechanical properties, particularly the toughness of the 70/30 PHBV/ENR blends, identified as the optimal blending ratio based on prior research. The resulting blend vulcanizate (PHBV/ENRv) exhibits toughness values of 63.0 ± 14.8 J m<sup>− 1</sup> and 24.4 ± 2.8 J m<sup>− 1</sup> for blends with ENRv-25 and ENRv-50, respectively. These findings hold promise for advancing the design and development of biodegradable polymer blend systems, with a focus on enhancing processability and mechanical performance.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141496134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent Progress in Development of Functionalized Lignin Towards Sustainable Applications 开发功能化木质素以实现可持续应用的最新进展

IF 4.7 3区工程技术

Journal of Polymers and the Environment Pub Date : 2024-06-18 DOI: 10.1007/s10924-024-03338-x

Mohamad Nurul Azman Mohammad Taib, Mohammad Mizanur Rahman, Jost Ruwoldt, I. Wayan Arnata, Dewi Sartika, Tawfik A. Salleh, M. Hazwan Hussin

{"title":"Recent Progress in Development of Functionalized Lignin Towards Sustainable Applications","authors":"Mohamad Nurul Azman Mohammad Taib, Mohammad Mizanur Rahman, Jost Ruwoldt, I. Wayan Arnata, Dewi Sartika, Tawfik A. Salleh, M. Hazwan Hussin","doi":"10.1007/s10924-024-03338-x","DOIUrl":"10.1007/s10924-024-03338-x","url":null,"abstract":"<div><p>Lignin is classified as the second most abundantly available biopolymer after cellulose and as a main aromatic resource material. Lignin structure differs based on sources of origin and species of biomass with around 15–40% of lignin content based on dry weight. It is extracted from various types of lignocellulosic biomass through different pulping extraction methods. After extraction, lignin can be further functionalized through different chemical reactions to meet the requirements and specifications before being used in end products. Therefore, in this review paper, the details on extraction and the type of lignin, as well as chemical functionalization, are discussed. The chemical functionalization can be used to modify the lignin such through phenolic depolymerization or by other aromatic compounds, creating novel chemical active sites to impact a reactivity of lignin and through functionalization of hydroxyl functional group for enhancing its reactivity. Furthermore, the recent sustainable application of lignin was discussed in different fields such as nanocomposite, flame retardant, antioxidant, cosmetic, natural binder and emulsifier. This review hence provides a summary of the current stateoftheart in lignin technology and future outlook of potential application areas.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141496133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photocrosslinkable Antibacterial Bioadhesives Derived from Soybean Oil-Based Hydroxyurethane Methacrylates 由大豆油基羟基聚氨酯甲基丙烯酸酯衍生的光交联抗菌生物粘合剂

IF 4.7 3区工程技术

Journal of Polymers and the Environment Pub Date : 2024-06-18 DOI: 10.1007/s10924-024-03333-2

Tina Rabiee, Hamid Yeganeh, Saied Nouri Khorasani, Iraj Mohammadpoor-Baltork

{"title":"Photocrosslinkable Antibacterial Bioadhesives Derived from Soybean Oil-Based Hydroxyurethane Methacrylates","authors":"Tina Rabiee, Hamid Yeganeh, Saied Nouri Khorasani, Iraj Mohammadpoor-Baltork","doi":"10.1007/s10924-024-03333-2","DOIUrl":"10.1007/s10924-024-03333-2","url":null,"abstract":"<div><p>Compared to traditional invasive techniques for wound closure, photocrosslinkable surgical adhesives with antibacterial properties offer significant advantages. These include ease of application, a controllable and efficient curing reaction, reduced risk of pain and infection, and effective leakage prevention. This study introduces a novel soybean oil-based nonisocyanate polyurethane prepolymer for use in such adhesives. The prepolymer, a hydroxyurethane functionalized with methacrylate and quaternary ammonium groups (QAs), was characterized through spectroscopic methods. The resulting UV-curable bioadhesives, synthesized via thiol-ene-methacrylate click-photopolymerization, incorporated limonene as a reactive diluent, a tetra-functional thiol crosslinker, and a photoinitiator. Elemental analysis confirmed the uniform distribution of QAs and sulfur atoms, indicating a homogeneous network structure, corroborated by high gel content values in both organic (84–92%) and aqueous media (91–99%), and a consistent tan δ peak as per DMTA. The optimized adhesives exhibited strong adhesion (up to 377 kPa) to gelatin sheets—a tissue-analogous substrate—and displayed suitable surface free energy (45–52 mN/m) as determined by contact angle measurements, suggesting favorable thermodynamic adhesion to skin. Additionally, the adhesives showed satisfactory cytocompatibility with L-929 fibroblast cells and antimicrobial efficacy against two gram-positive and gram-negative bacterial strains, indicating promising biological activity.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141496131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","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 Indole-Based Porous Magnetic Composite via Cation-π Interaction-Driven and Induced Strategy and its Efficient Adsorption of TNT 通过阳离子-π相互作用驱动和诱导策略制备吲哚基多孔磁性复合材料并高效吸附 TNT

IF 4.7 3区工程技术

Journal of Polymers and the Environment Pub Date : 2024-06-18 DOI: 10.1007/s10924-024-03332-3

Yangqing Mao, Haoran Zhu, Boyuan Zhang, Ziqi Wu, Bing Zhao, Rui Yuan, Mingru Zhou, Min Zheng, Guanjun Chang, Yewei Xu

{"title":"Preparation of Indole-Based Porous Magnetic Composite via Cation-π Interaction-Driven and Induced Strategy and its Efficient Adsorption of TNT","authors":"Yangqing Mao, Haoran Zhu, Boyuan Zhang, Ziqi Wu, Bing Zhao, Rui Yuan, Mingru Zhou, Min Zheng, Guanjun Chang, Yewei Xu","doi":"10.1007/s10924-024-03332-3","DOIUrl":"10.1007/s10924-024-03332-3","url":null,"abstract":"<div><p>A strategy driven and induced by cation-π interaction was employed to obtain a magnetic porous composite material (Fe<sub>3</sub>O<sub>4</sub>/PIN) with a uniform dispersion of ferroferric oxide (Fe<sub>3</sub>O<sub>4</sub>). Utilizing ferric chloride as the catalyst, indole-based porous polymer (PIN) was successfully synthesized through the Friedel-Crafts alkylation reaction. Concurrently with the preparation of the PIN, the cation-π interaction played a pivotal role, not only driving but also inducing the effective dispersion of iron ions from the catalyst around the indole groups. Subsequently, the introduction of ferrous sulfate into the reaction mixture triggered an in-situ reaction, resulting in the uniform distribution of Fe<sub>3</sub>O<sub>4</sub> around the indole groups within the PIN. At a temperature of 298 K, Fe<sub>3</sub>O<sub>4</sub>/PIN demonstrated remarkable adsorption efficiency for TNT, boasting a maximum adsorption capacity of 290.697 mg/g, with the ability to achieve 74% of this capacity within one hour. Moreover, Fe<sub>3</sub>O<sub>4</sub>/PIN also exhibited a commendable adsorption efficiency for TNT in real water samples. In addition, Fe<sub>3</sub>O<sub>4</sub>/PIN could be recovered rapidly due to its excellent magnetic properties. After five adsorption-desorption cycles, the adsorption capacity of Fe<sub>3</sub>O<sub>4</sub>/PIN for TNT remained at 90% of its maximum capacity. Hence, Fe<sub>3</sub>O<sub>4</sub>/PIN was anticipated to serve as an effective adsorbent for TNT. The uniform distribution of Fe<sub>3</sub>O<sub>4</sub> in porous materials through the driving and inducing effects of cation-π is an unprecedented innovation, offering a new perspective and approach to the synthesis and utilization of similar composite materials.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141496132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Surface Erosion Equations for Degradation Analysis of Several Common Three-Dimensional Shapes of Plastic Materials 用于几种常见三维形状塑料材料降解分析的表面侵蚀方程

IF 4.7 3区工程技术

Journal of Polymers and the Environment Pub Date : 2024-06-14 DOI: 10.1007/s10924-024-03291-9

Kirk W. Dotson, Kyle Pisano, D. Abigail Renegar

{"title":"Surface Erosion Equations for Degradation Analysis of Several Common Three-Dimensional Shapes of Plastic Materials","authors":"Kirk W. Dotson, Kyle Pisano, D. Abigail Renegar","doi":"10.1007/s10924-024-03291-9","DOIUrl":"10.1007/s10924-024-03291-9","url":null,"abstract":"<div><p>Equations were derived for the biodegradative erosion of the surfaces of arbitrarily-sized circular and square objects, i.e., the decrease in volume caused by the catalytic activity of enzymes secreted by microorganisms attached to the object surfaces. Surface erosion is the primary mode of biodegradation for polyhydroxyalkanoate (PHA) objects resting on the ocean floor. Although the derivations were motivated by a need to assess the time-varying biodegradation and ultimate disintegration of PHA tubes and straws in the benthic environment, generality was maintained during the mathematical development such that the resulting equations are also applicable to other circular and square objects, including cylindrical rings, discs, and solid rods, and square plates, cubes, and prisms. Moreover, the equations are applicable to abiotic degradation via physical erosion, not just to biotic degradation caused by microbes. Surface erosion is expressed in terms of the ratio of the instantaneous mass to the initial mass, which is generally nonlinear with respect to time. The value of this ratio and the relative dimensions of the object establish a surface erosion function and its evolution over the lifetime of the object. Hence, the rate of degradation is not constant in the theory, but rather is prescribed by the irregular mass loss and the original geometry of the 3D object.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10924-024-03291-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141339076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of Fungal Decomposition Strategies as a Step Towards the Development of Sustainable Pressure Sensitive Adhesives 评估真菌分解策略作为开发可持续压敏胶的一个步骤

IF 4.7 3区工程技术

Journal of Polymers and the Environment Pub Date : 2024-06-07 DOI: 10.1007/s10924-024-03329-y

Jesus D. Castaño, Drew A. Hauge, Steven J. Severtson, Jiwei Zhang

{"title":"Assessment of Fungal Decomposition Strategies as a Step Towards the Development of Sustainable Pressure Sensitive Adhesives","authors":"Jesus D. Castaño, Drew A. Hauge, Steven J. Severtson, Jiwei Zhang","doi":"10.1007/s10924-024-03329-y","DOIUrl":"10.1007/s10924-024-03329-y","url":null,"abstract":"<div><p>Water-based pressure-sensitive adhesives (PSAs) are widely used for different applications due to their cost and convenience. However, their synthesis relies on petroleum-based acrylic monomers, which negatively affects their biodegradability and recyclability. Hybrid acrylic polymers combining acrylic monomers and acrylate-functionalized lactide-based macromonomers could help solve this issue. Recently, we reported on the remarkable biodegradability of these hybrid PSAs in their latex format when using fungal treatments. In this study, we focused on the degradation of dried PSA films, a prevalent application format in commercial settings, by utilizing fungal consortia and solid-state fermentation. Our findings indicated that the type of fungal treatment, carbon source provided, and substrate thickness significantly affected biodegradation rates. The co-culture of <i>Pestalotiopsis microspora</i> and <i>Trametes versicolor</i> demonstrated particularly promising results, achieving degradation rates exceeding 50%, notably, when utilizing wheat bran as a carbon source. Moreover, the renewal of culture media and inoculum further amplified PSA biodegradation. These results underscore the potential of fungal consortia in solid-state cultures to substantially enhance the biodegradation of hybrid acrylic PSA films, offering insights for the design of more sustainable adhesive bio-based products and finally leading to an environmentally responsible end of the PSAs lifecycle.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141374442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Use of the Straightforward Diels-Alder Reaction for the Preparation of Monomers From Tung Oil and Itaconic Acid-Derived Precursors: Synthesis, Characterization, and Screening of Their Polymerization Reactions 利用简单的 Diels-Alder 反应从桐油和衣康酸衍生前体制备单体：其聚合反应的合成、表征和筛选

IF 4.7 3区工程技术

Journal of Polymers and the Environment Pub Date : 2024-06-04 DOI: 10.1007/s10924-024-03326-1

Julio Antonio Conti Silva, Rafael Lopes Quirino, Talita Martins Lacerda

{"title":"The Use of the Straightforward Diels-Alder Reaction for the Preparation of Monomers From Tung Oil and Itaconic Acid-Derived Precursors: Synthesis, Characterization, and Screening of Their Polymerization Reactions","authors":"Julio Antonio Conti Silva, Rafael Lopes Quirino, Talita Martins Lacerda","doi":"10.1007/s10924-024-03326-1","DOIUrl":"10.1007/s10924-024-03326-1","url":null,"abstract":"<div><p>The strict dependance of the polymer industry on petroleum-based chemicals has risen awareness on environmental safety and sustainability, motivating an at least partial shift towards the utilization of renewable platforms as alternative sources of raw materials. The strategy gains notoriety if one considers the preparation of novel macromolecules that cannot be obtained from petroleum using reasonable synthetic steps. In this work, tung oil and itaconic acid were used as bio-based feedstocks for the synthesis of novel polyfunctional monomers and polyesters. Primarily, methyl α-eleostearate, synthesized from tung oil and methanol, was applied as diene in a Diels-Alder reaction with dimethyl itaconate, leading to the formation of tri-ester monomers. A petroleum-based dienophile, <i>n</i>-butyl methacrylate, was also used to produce a bifunctional monomer. The synthesized monomers were characterized by FTIR/ATR, <sup>1</sup>H NMR and GC-MS, and then submitted to step-growth polymerizations with either glycerol or ethylene glycol, which allowed to synthesize novel linear and crosslinked bio-based polyesters. Spectroscopic analyses of the products suggested the success of the reactions, and TGA did not detect the presence of volatiles, with the materials being stable at temperatures up to 240 °C. DSC indicated a glass transition temperature at approximately 0 °C for one of the polymers, and an exothermic peak centered at about 140 °C, likely resulting from polymerization of the unsaturations in the polyesters. GPC indicated peaks with weight average molecular weights (<span>(stackrel{-}{{M}_{w}})</span>) of around 1400–2200 Da, suggesting the formation of oligomers. The results were encouraging and are expected to inspire new possibilities to produce bio-based polymeric materials.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141252653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","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 the Novel Nanocomposites Based on Graphene Oxide/PLLA/PEG-PPG/PLCL Hybrids for Mechanical and Biomedical Applications 基于氧化石墨烯/PLLA/PEG-PPG/PLCL 混合材料的新型纳米复合材料的合成与表征--用于机械和生物医学应用

IF 4.7 3区工程技术

Journal of Polymers and the Environment Pub Date : 2024-06-04 DOI: 10.1007/s10924-024-03327-0

Mohammad Javad Azizli, Hengameh Honarkar, Ehsan Vafa, Somayeh Parham, Katayoon Rezaeeparto, Fatemeh Azizli, Mohammad Reza Kianfar, Mohammad Bagher Zarei, Ali Moahammad Amani, Masoud Mokhtary

{"title":"Synthesis and Characterization of the Novel Nanocomposites Based on Graphene Oxide/PLLA/PEG-PPG/PLCL Hybrids for Mechanical and Biomedical Applications","authors":"Mohammad Javad Azizli, Hengameh Honarkar, Ehsan Vafa, Somayeh Parham, Katayoon Rezaeeparto, Fatemeh Azizli, Mohammad Reza Kianfar, Mohammad Bagher Zarei, Ali Moahammad Amani, Masoud Mokhtary","doi":"10.1007/s10924-024-03327-0","DOIUrl":"10.1007/s10924-024-03327-0","url":null,"abstract":"<div><p>In this research, the synthesis of new nanocomposites based on Poly (L-lactic acid)/ poly (L-lactide<i>- ɛ-</i>caprolactone) PLLA/PLCL with a ratio of 90/10 and different amounts of graphene oxide (GO) (0.1-1%) was put on the agenda. The poly (ethylene glycol)-<i>block</i>-poly (propylene glycol), PEG-PPG, as a compatibilizer was used in each compound to increase the compatibility of the two phases. Fourier-transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) were applied to study the structure of the obtained samples. Also, morphology, mechanical properties, rheological behavior, thermal stability, dynamic mechanical thermal analysis (DMTA), contact angle, and hydro-catalytic degradation were investigated. The results showed that using the GO, and PEG-PPG compatibilizer significantly decreased the average diameter of the dispersed phase of PLCL in the PLLA matrix. In addition, with the increase of GO contents, the mechanical properties, thermal stability contact angle, storage modulus increased, but hydro-catalytic degradation decreased. The results of scanning electron microscope (SEM) and transmission electron microscopy (TEM) approved that the presence of PEG-PPG compatibilizer significantly affects the dispersion of GO in the PLLA/PLCL matrix. So, the synthesized nanocomposite is a good candidate for mechanical and biomedical applications.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141252541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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