RSC Applied Polymers最新文献_第10页

Tuning the thermal response of 3D-printed bilayer hydrogels via architectural control using binary ethanol–water solvent systems† 利用二元乙醇-水溶剂体系，通过结构控制调节三维打印双层水凝胶的热反应†。

RSC Applied Polymers Pub Date : 2024-08-14 DOI: 10.1039/D4LP00032C

Francis Klincewicz, Subhash Kalidindi and LaShanda T. J. Korley

{"title":"Tuning the thermal response of 3D-printed bilayer hydrogels via architectural control using binary ethanol–water solvent systems†","authors":"Francis Klincewicz, Subhash Kalidindi and LaShanda T. J. Korley","doi":"10.1039/D4LP00032C","DOIUrl":"https://doi.org/10.1039/D4LP00032C","url":null,"abstract":"While stimuli-responsive materials can be prepared via many established procedures, digital light processing (DLP) 3D printing offers a simple and robust technique for the fabrication of hydrogels, including spatially-defined bilayer hydrogels. The use of synthesis solvent mixtures has recently gained attention as a facile alternative to more complicated chemical modifications to tune hydrogel morphology by exploiting solvent-monomer interactions and cononsolvency which, by extension, modulates stimuli-response time and magnitude. In this work, we utilized a binary solvent system consisting of ethanol and water to induce morphological changes within a thermally-responsive poly(N-isopropyl acrylamide) (pNIPAAm) hydrogel during polymerization. By varying the ratio of ethanol to water, we demonstrated that hydrogel properties, such as crosslink density, pore morphology, and thermal response, can be tuned and correlated. While mass expulsion was fastest in gels prepared in 100% ethanol, we found that gels prepared in 75%–25% ethanol–water and 50%–50% ethanol–water maintained mechanical integrity at high temperatures, allowing expulsion of water mass without large amounts of contraction. We utilized the experimental findings from the monolayer hydrogel studies and investigated the response of bilayer structures comprised of pNIPAAm hydrogel layer and a non-responsive poly(2-hydroxyethyl acrylate) (pHEA) hydrogel layer and applied a mathematical model to better understand the fundamental kinematics of these bilayer systems in response to temperature. We also demonstrated the utility of these bilayer hydrogels for use in soft robotics applications. Overall, this work highlights that modulation of binary solvent mixture ratios is a strategy that enables control of morphological and mechanical features of stimuli-responsive hydrogels via 3D printing.","PeriodicalId":101139,"journal":{"name":"RSC Applied Polymers","volume":" 6","pages":" 1062-1073"},"PeriodicalIF":0.0,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/lp/d4lp00032c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ternary thiol–ene systems as high-performance bone adhesives for potential clinical use† 三元巯基体系作为高性能骨粘接剂的潜在临床应用†

RSC Applied Polymers Pub Date : 2024-08-13 DOI: 10.1039/D4LP00094C

Lisa Sinawehl, Patrick Steinbauer, Danijela Kojic, Paul Slezak, Heinz Redl and Stefan Baudis

{"title":"Ternary thiol–ene systems as high-performance bone adhesives for potential clinical use†","authors":"Lisa Sinawehl, Patrick Steinbauer, Danijela Kojic, Paul Slezak, Heinz Redl and Stefan Baudis","doi":"10.1039/D4LP00094C","DOIUrl":"https://doi.org/10.1039/D4LP00094C","url":null,"abstract":"The vision of using bone adhesives for adjunct surgical treatment of complicated fractures or facile reattachment of bone fragments is highly attractive, as compared to conventional techniques, it is expected to significantly reduce operation times and potentially avoid the need for revision surgeries. Nevertheless, no commercial adhesives, that combine biocompatibility, sufficient bonding strength, and time-efficient, implementable fixation protocols are available yet. Inspired by self-etching dental restoratives, we present the development of novel adhesive molecules, so-called primers, containing adhesion motifs for high binding affinity to bone and implants and co-polymerizable groups for incorporation into the adhesive matrix. By efficient design of this primer molecule with regards to spacer length and type and number of polymerizable groups, we were able to develop the first-known one-step in situ photocurable adhesive system, based on thiol–ene chemistry with a shear bond strength comparable to dental adhesives. Unprecedented shear bond strength on bone was determined with the optimized system, which surpasses the state-of-the-art thiol–ene adhesive reported in literature by more than 70%. Good in vitro biocompatibility of the novel primer was determined, and, remarkably, first ex vivo indentation tests on the calvariae of rats revealed exceptional adhesive performance with failure of the calvariae instead of the adhesive. Due to combining practicability and applicability, this adhesive system might pave the way towards the future of adjunct fracture treatment, with applications such as the fixation of comminuted fractures, small or thin bone fragments, or the additional fixation of implants.","PeriodicalId":101139,"journal":{"name":"RSC Applied Polymers","volume":" 1","pages":" 137-145"},"PeriodicalIF":0.0,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/lp/d4lp00094c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Antimicrobial textiles based on photocrosslinked poly(ethylene-co-acrylic acid)† 基于光交联聚（乙烯-丙烯酸）†的抗菌纺织品

RSC Applied Polymers Pub Date : 2024-08-12 DOI: 10.1039/D4LP00145A

Yimin Zeng and Michael O. Wolf

引用次数: 0

Self-limiting electrospray deposition (SLED) of porous polyimide coatings as effective lithium-ion battery separator membranes† 多孔聚酰亚胺涂层的自限性电喷雾沉积 (SLED) 可用作有效的锂离子电池隔膜†。

RSC Applied Polymers Pub Date : 2024-08-09 DOI: 10.1039/D4LP00192C

Robert A. Green-Warren, Andrew L. Fassler, Abigail Juhl, Noah M. McAllister, Andrew Huth, Maxim Arkhipov, Michael J. Grzenda, S. Rahman Pejman, Michael F. Durstock and Jonathan P. Singer

{"title":"Self-limiting electrospray deposition (SLED) of porous polyimide coatings as effective lithium-ion battery separator membranes†","authors":"Robert A. Green-Warren, Andrew L. Fassler, Abigail Juhl, Noah M. McAllister, Andrew Huth, Maxim Arkhipov, Michael J. Grzenda, S. Rahman Pejman, Michael F. Durstock and Jonathan P. Singer","doi":"10.1039/D4LP00192C","DOIUrl":"https://doi.org/10.1039/D4LP00192C","url":null,"abstract":"Electrospray deposition (ESD) is employed to produce separator membranes for coin-cell lithium-ion batteries (LIBs) using off-the-shelf polyimide (PI). The PI coatings are deposited directly onto planar LiNi0.6Mn0.2Co0.2O2 (NMC) electrodes via self-limiting electrospray deposition (SLED). Scanning electron microscopy (SEM), optical microscopy, and spectroscopic microreflectometry are implemented in combination to evaluate the porosity, thickness, and morphology of sprayed PI films. Furthermore, ultraviolet-visual wavelength spectroscopy (UV vis) is utilized to qualitatively assess variation in film porosity within a temperature range of 20–400 °C, to determine the stable temperature range of the separator. UV vis results underscore the ability of the SLED PI separator to maintain its porous microstructure up to ∼350 °C. Electrochemical performance of the PI separators is analyzed via charge/discharge cycle rate tests. Discharge capacities of the SLED PI separators are within 83–99.8% of commercial Celgard 2325 PP/PE/PP separators. This study points to the unique possibility of SLED as a separator manufacturing technique for geometrically complex energy storage systems. Further research is needed to optimize the polymer–solvent system to enhance control of porosity, pore size, and coating thickness. This can lead to significant improvement in rate and cycle life performance in more advanced energy storage devices.","PeriodicalId":101139,"journal":{"name":"RSC Applied Polymers","volume":" 6","pages":" 1074-1081"},"PeriodicalIF":0.0,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/lp/d4lp00192c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Polydiacetylene/copolymer sensors to detect lung cancer breath volatile organic compounds† 用于检测肺癌呼气挥发性有机化合物的聚二乙烯/聚合物传感器†。

RSC Applied Polymers Pub Date : 2024-07-30 DOI: 10.1039/D4LP00199K

Angie Davina Tjandra and Rona Chandrawati

{"title":"Polydiacetylene/copolymer sensors to detect lung cancer breath volatile organic compounds†","authors":"Angie Davina Tjandra and Rona Chandrawati","doi":"10.1039/D4LP00199K","DOIUrl":"https://doi.org/10.1039/D4LP00199K","url":null,"abstract":"Early lung cancer detection is imperative to increase the 5-year survival rate and reduce cancer mortality. Existing diagnosis techniques involve costly, time-consuming, and often invasive tests. The emergence of volatile organic compounds (VOCs) as a disease biomarker offers a non-invasive avenue for early detection of lung cancer through breath analysis. Recently, polydiacetylene (PDA)-based colorimetric sensors have shown the potential to detect VOCs. In this work, we developed PDA/copolymer paper sensors to detect 5 potential early lung cancer VOC biomarkers, including ethylbenzene, 2-butanone, hexanal, 2-ethylhexanol, and undecane. Polymethyl methacrylate (PMMA), polyvinylpyrrolidone (PVP), polystyrene (PST), and polyethylene glycol (PEG) were selected as copolymers based on their chemical affinity and solvating properties. Different copolymer molecular weights and PDA/copolymer mixing ratios were investigated and their responses to standard breath temperature and relative humidity (35 °C, 60% RH and 90% RH) were evaluated. We then developed an array containing 11 PDA/copolymers and exposed them to gaseous VOC biomarkers and common breath interferents (ethanol, acetone, and isoprene) in a custom-built reactor. The colorimetric data were simultaneously analyzed using principal component analysis and results showed highly discriminating properties. We demonstrated the detection of 2-butanone (LOD = 267 ppmv), ethylbenzene (LOD = 457 ppmv), and ethanol (LOD = 269 ppmv) within 15 min. This study aims to establish a cost-effective, user-friendly, and non-invasive methodology for early detection of lung cancer.","PeriodicalId":101139,"journal":{"name":"RSC Applied Polymers","volume":" 6","pages":" 1043-1056"},"PeriodicalIF":0.0,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/lp/d4lp00199k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A direct comparison of the thermal reprocessing potential of associative and dissociative reversible bonds in thermosets† 直接比较热固性塑料中缔合可逆键和解离可逆键的热再加工潜力†。

RSC Applied Polymers Pub Date : 2024-07-29 DOI: 10.1039/D3LP00242J

Arijana Susa, Willem Vogelzang, Wouter Teunissen, Karin Molenveld, Evelien Maaskant and Wouter Post

{"title":"A direct comparison of the thermal reprocessing potential of associative and dissociative reversible bonds in thermosets†","authors":"Arijana Susa, Willem Vogelzang, Wouter Teunissen, Karin Molenveld, Evelien Maaskant and Wouter Post","doi":"10.1039/D3LP00242J","DOIUrl":"https://doi.org/10.1039/D3LP00242J","url":null,"abstract":"This study compares the thermal reprocessing potential of thermosets comprising associative or dissociative dynamic covalent bonds by evaluating their rheological behavior. In correspondence with earlier studies, it is shown that the dynamic behavior upon the application of a thermal stimulus is highly dependent on the selected molecular mechanisms. However, so far it has been difficult to unambiguously determine the effect of the type of reversible molecular mechanism on the reprocessing potential due to the significant dissimilarity of backbones within different thermosets. To overcome this hurdle, we designed and synthesized special model thermoset systems with near-identical backbones. This made it possible to assess the thermal reprocessing potential of these mechanisms directly and in a quantitative manner. A vinylogous urethane-based linkage and a Diels–Alder (DA) linkage were selected as the model associative and dissociative dynamic mechanisms, respectively. These linkages were embedded in comparable molecular structures, polymerized and subjected to near-identical processing conditions. The results show that the viscosity of a thermoset containing dissociative linkages can be severely reduced by applying heat, which could allow for more facile mechanical recycling via conventional thermoplastic processing methods. A similar impact on the viscosity was not observed in the associative thermoset prepared in this work and therefore the thermal reprocessing potential of this material is currently limited compared to its dissociative counterpart.","PeriodicalId":101139,"journal":{"name":"RSC Applied Polymers","volume":" 5","pages":" 945-956"},"PeriodicalIF":0.0,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/lp/d3lp00242j?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142246654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

N and P-type zwitterion gated organic field effect transistors† N 型和 P 型齐聚物门控有机场效应晶体管

RSC Applied Polymers Pub Date : 2024-07-24 DOI: 10.1039/D4LP00121D

Jasleen Kaur, Harsimrat Kaur and Loren G. Kaake

{"title":"N and P-type zwitterion gated organic field effect transistors†","authors":"Jasleen Kaur, Harsimrat Kaur and Loren G. Kaake","doi":"10.1039/D4LP00121D","DOIUrl":"https://doi.org/10.1039/D4LP00121D","url":null,"abstract":"Low voltage operation in organic field effect transistors (OFETs) requires dielectric materials with extremely large capacitance. We explored a novel zwitterion-based dielectric material prepared using 4-(3-Butyl-1-imidazolio)-1-butanesulfonate (ZI) in a poly(vinyl alcohol) (PVA) polymer matrix. P-type OFET devices were fabricated with poly(3-hexylthiophene-2,5-diyl) (P3HT), their performance was found to be strongly humidity dependent with humidified devices producing roughly the same current at a voltage nearly 30 times lower than devices tested under an inert atmosphere. N-type OFETs based on poly{[N,N′-bis(2-octyldodecyl)napthlene-1,4,5,8-bis(dicarboximide)-2,6-diyl]-alt-5,5′-(2,2′-bithiophene)} (P(NDI2OD-2T)) also showed improved current levels in humidified devices, but possessed a low on/off ratio. Impedance measurements of the dielectric film showed a marked increase in the magnitude and frequency response of the capacitance with increasing humidity. The process can be modelled in terms of a single rate-limiting process using the Havriliak–Negami equation. Infrared spectroscopy was used to further examine the intermolecular interactions responsible for the humidity-dependent capacitance. Changes were observed in the spectrum of PVA with ZI inclusion and with respect to humidity. We hypothesize that the ZI molecules rotate in response to an applied field and that rotation is inhibited by strong intermolecular interactions between ZI molecules and the polymer matrix under dry conditions. This hypothesis also can be used to rationalize the low on/off ratio of the P(NDI2OD-2T) transistors. In sum, we demonstrate a material with capacitance values approaching those of an electrostatic double layer and demonstrated that local intermolecular interactions are central to understanding material behavior.","PeriodicalId":101139,"journal":{"name":"RSC Applied Polymers","volume":" 5","pages":" 926-935"},"PeriodicalIF":0.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/lp/d4lp00121d?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142246620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydrophobic cyclodextrin dimer-assisted self-healing elastomer: movable crosslinks of pseudo-rotaxane with recyclable and separable functionality† 疏水性环糊精二聚体辅助自愈合弹性体：具有可回收和可分离功能性的伪罗他赛†可移动交联物

RSC Applied Polymers Pub Date : 2024-07-24 DOI: 10.1039/D4LP00196F

Shintaro Kawano, Kaito Ichiwara, Haruto Taneichi, Shieri Hamada, Yuki Fujino, Osamu Shimomura and Motohiro Shizuma

引用次数: 0

Oil-in-oil droplet stability dependence on dimensions of 2D Pickering particles of controlled size† 油包油型液滴的稳定性与尺寸可控的二维皮克林颗粒的尺寸†有关

RSC Applied Polymers Pub Date : 2024-07-22 DOI: 10.1039/D4LP00091A

Simon D. Dale, James Beament, Andrew P. Dove and Rachel K. O'Reilly

引用次数: 0

3D printing polymerizable eutectics via RAFT polymerization† 通过 RAFT 聚合技术实现 3D 打印可聚合共晶†。

RSC Applied Polymers Pub Date : 2024-07-16 DOI: 10.1039/D4LP00144C

Nathaniel Corrigan, Alexandra L. Mutch, Cyrille Boyer and Stuart C. Thickett

{"title":"3D printing polymerizable eutectics via RAFT polymerization†","authors":"Nathaniel Corrigan, Alexandra L. Mutch, Cyrille Boyer and Stuart C. Thickett","doi":"10.1039/D4LP00144C","DOIUrl":"https://doi.org/10.1039/D4LP00144C","url":null,"abstract":"Over the past five years, there has been a notable increase in the application of three-dimensional (3D) printing techniques mediated by reversible addition–fragmentation chain-transfer (RAFT) polymerization. This increasing interest is due in part to the associated benefits that RAFT 3D printing systems provide, including tighter control over macromolecular network structures and the ability to easily prepare multifunctional materials. In parallel, deep eutectic solvents that feature polymerizable components, called polymerizable eutectics, have also been gaining attention for their outstanding properties and ease of manufacture of functional polymer materials. In this work, we develop polymerizable eutectic resins that contain RAFT agents and are suitable for application to visible-light induced vat 3D printing. The combination of the polymerizable eutectic components and a Z-connected bis-RAFT agent in the resin provides the resulting materials with excellent properties derived from both the eutectic components and the degenerative chain transfer mechanism of RAFT polymerization. While the base (non-RAFT) polymerizable eutectic materials display high modulus and adhesive strength on their own, the inclusion of RAFT agents provides materials with higher adhesive strength while retaining their high strength to higher temperatures. Moreover, the selection of N-isopropylacrylamide as one of the eutectic components provides these materials with reversible thermoresponsive behavior in water. The high shape fidelity and ease of preparation of these materials could be of potential use in the design of 3D printable biomaterials and actuators.","PeriodicalId":101139,"journal":{"name":"RSC Applied Polymers","volume":" 5","pages":" 914-925"},"PeriodicalIF":0.0,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/lp/d4lp00144c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142246619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0