Macromolecular Symposia最新文献_第6页

Development of Bioactive Patches From Aloe Vera and Nata De Coco for Wound Dressing Applications 芦荟和椰子树生物活性贴剂在伤口敷料中的应用

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202300235

Siti Maznah binti Kabeb, Nurlin binti Abu Samah, Nurjannah binti Salim, Farah Hanani Zulkifli

{"title":"Development of Bioactive Patches From Aloe Vera and Nata De Coco for Wound Dressing Applications","authors":"Siti Maznah binti Kabeb, Nurlin binti Abu Samah, Nurjannah binti Salim, Farah Hanani Zulkifli","doi":"10.1002/masy.202300235","DOIUrl":"https://doi.org/10.1002/masy.202300235","url":null,"abstract":"This study focuses on the development and characterization of bioactive patches derived from Aloe Vera (AV) and Nata De Coco (NDC) for advanced wound dressing applications. Utilizing the solution casting method, biocomposite films are developed using polyvinyl alcohol (PVA) with varied bio-filler content (2%−10%) w/w. Fourier-transform infrared (FTIR) analysis confirms the miscibility and compatibility of PVA and bio-fillers via intermolecular hydrogen bonding. PVA/NDC10 demonstrates the highest water-holding capacity (WHC), exhibiting an increase from 157.17% (neat PVA) to 286.01%, resulting in an 82.0% enhancement. Conversely, increasing NDC content leads to a gradual decrease in tensile strength. Notably, the hybrid biocomposite film (PVA/AV/NDC) shows a significant 20.82% improvement in tensile strength, reaching 30.79 MPa. The study underscores the promise of AV and NDC bioactive patches for advanced wound dressing. Additionally, the hybrid approach shows synergistic improvements in water retention and mechanical strength, offering a comprehensive solution for effective wound management.","PeriodicalId":18107,"journal":{"name":"Macromolecular Symposia","volume":"414 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Intelligent Polymer Coatings: Enhancing Media Preservation through AI-Driven Techniques 智能聚合物涂层：通过人工智能驱动技术增强介质保存

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202300238

Priyanka Kumari, Shishir Kumar Singh, Ritu S. Sood, Sandeep Kumar, Rahul Dadhich, Rajesh Upadhyay, Rahul Kumar

引用次数: 0

Band Gap Engineering of Nanocones via Mono-Hydrogenation 单氢化纳米锥带隙工程研究

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400002

A. A. El-Barbary, S. M. Khurmy, Hind Adawi

{"title":"Band Gap Engineering of Nanocones via Mono-Hydrogenation","authors":"A. A. El-Barbary, S. M. Khurmy, Hind Adawi","doi":"10.1002/masy.202400002","DOIUrl":"https://doi.org/10.1002/masy.202400002","url":null,"abstract":"The unique properties of nanocones attract increasing attention from a scientific point of view due to their wide range of electronic applications. Band gap engineering in nanocones is a powerful technique for designing new devices for lasers, light-emitting diodes, flat panel displays, and solar cells. Therefore, in this research, a detailed theoretical study of the behavior of three different types of nanocones is presented, and one of its most notable findings is the band gaps reduction as a result of introducing the hydrogen atom outside nanocone. The study has presented a complete set of band gap calculations, considering not only pure nanocones, CNCs (carbon nanocones), BNNCs (born nitride nanocons), and SiCNCs (silicon carbide nanocons) but also endohedral and exohedral mono hydrogenated nanocones using density functional theory (DFT). The results show that the band reduction can be up to 72% due to mono hydrogenation of CBNCs as the band gap changes from 4.4 eV for pure BNNCs to 1.2 eV for mono hydrogenated BNNCs. The wide range of band gaps for various hydrogenated nanocones may allow the fundamental control needed to design next-generation electronic components.","PeriodicalId":18107,"journal":{"name":"Macromolecular Symposia","volume":"414 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Crosslinking Agent on the Cellulose Nanocrystals Reinforced Hydroxyethyl Cellulose/Poly(Vinyl Alcohol) Scaffolds 交联剂对纤维素纳米晶增强羟乙基纤维素/聚乙烯醇支架的影响

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202300264

Chong Jung Nam, Nur Fatini Ilyana Mohamat Johari, Sulaiman Khan, Siti Maznah Kabeb, Farah Hanani Zulkifli

引用次数: 0

Macromol. Symp. 414 絮凝。414年计算机协会。

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.70003

引用次数: 0

Title Page 414-1 标题页414-1

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.70004

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The Effect of the Resistin, Interleukin-6 Macromolecules, and Tumor Necrosis Factor on Heart Disease 抵抗素、白细胞介素-6大分子和肿瘤坏死因子在心脏病中的作用

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400222

Muna Jumaah Hammad, Wasan Nazhan Hussein

引用次数: 0

The Effect of the Presence of ILs on the Strength and Ionic Conductivity of Nafion Membrane il的存在对钠离子膜强度和离子电导率的影响

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400155

Ruwaida Asyikin Abu Talip, Wan Zaireen Nisa Yahya

{"title":"The Effect of the Presence of ILs on the Strength and Ionic Conductivity of Nafion Membrane","authors":"Ruwaida Asyikin Abu Talip, Wan Zaireen Nisa Yahya","doi":"10.1002/masy.202400155","DOIUrl":"https://doi.org/10.1002/masy.202400155","url":null,"abstract":"Proton exchange membrane, a key element of the proton exchange membrane fuel cell, with perfluorosulfonic acid (PFSA) membranes notably Nafion has been principally used as it provides high proton conductivity and high mechanical strength with good durability even at high pressure. Nonetheless, at high temperatures, the membrane suffers from conductivity problems due to dehydration, notably at high temperatures. Ionic liquids (ILs) which possess unique properties such as high electrochemical windows, high ionic conductivity, and high thermal stability have been the subject of interest in solving this problem. In this study, a protic ionic liquid 1-butyl-3-methylimidazolium trifluoromethanesulfonate (BMIMOTf) have been incorporated into the Nafion 117 through the solution casting and immersion method at different weight loading from 5–50 wt.% and tested their ionic conductivity, mechanical strength at different temperatures. It is found that at 20 wt.% loading the resulting composite membrane showed a high conductivity with considerable tensile strength. Furthermore, at different wt.% the incorporated ILs have improved the thermal stability of the membrane.","PeriodicalId":18107,"journal":{"name":"Macromolecular Symposia","volume":"414 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluating a Blend of Amide-Based Polymer and Glycol as Methane Hydrate Inhibitor 酰胺基聚合物与乙二醇共混物作为甲烷水合物抑制剂的评价

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400169

Ankur Singh, Ajay Suri, K. Arunprasath, M. Z. A. Yahya, Lavish Singh

{"title":"Evaluating a Blend of Amide-Based Polymer and Glycol as Methane Hydrate Inhibitor","authors":"Ankur Singh, Ajay Suri, K. Arunprasath, M. Z. A. Yahya, Lavish Singh","doi":"10.1002/masy.202400169","DOIUrl":"https://doi.org/10.1002/masy.202400169","url":null,"abstract":"Pipelines often function in environments characterized by high pressure and low temperatures conditions conducive to hydrate formation. The occurrence of gas hydrate plugs can lead to pipeline blockages, resulting in significant economic losses and posing safety and environmental risks due to potential pipeline failures. In response, the industry is shifting toward low-dosage kinetic hydrate inhibitors (KHIs) requiring minimal quantities for effective hydrate inhibition. This study focuses on the synthesis and application of a cyclic amide-based polymer, polyvinyl caprolactam (PVCap), as a kinetic hydrate inhibition. This research also investigates the synergistic interaction between PVCap and monoethylene glycol (EG) where the hydrate inhibition performance of PVCap–EG blends is assessed. The experiments are done in a high pressure autoclave using constant cooling experimental procedure. The results demonstrate that increasing EG concentration in PVCap–EG blends lowers the equilibrium temperature (Teq), indicating effective hydrate inhibition. Moreover, the addition of EG reduces the hydrate growth rate to gas consumption rate ratio, showing its potential to mitigate hydrate formation.","PeriodicalId":18107,"journal":{"name":"Macromolecular Symposia","volume":"414 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Micro-Determination of the Macro-Drugs (Pseudoephedrine Hydrochloride-Ibuprofen) in their Pure Form and Pharmaceutical Preparations 大剂量药物（盐酸伪麻黄碱-布洛芬）纯和制剂的微量测定

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400240

Asmaa Saeed Jabouri, Khalf Fares Attia

引用次数: 0