ACS Applied Polymer Materials最新文献

{"title":"Domino Polymerization toward Microporous Polythioureas for Selective Gold Recovery from Electronic Waste","authors":"Wenhui Yan,&nbsp;, ,&nbsp;Shijun Li,&nbsp;, ,&nbsp;Jieyao Wang,&nbsp;, ,&nbsp;Xingyu Ma,&nbsp;, ,&nbsp;Mingxuan Zhang,&nbsp;, and ,&nbsp;Lei Li*,&nbsp;","doi":"10.1021/acsapm.5c02365","DOIUrl":"https://doi.org/10.1021/acsapm.5c02365","url":null,"abstract":"<p >The recovery of gold from electronic waste by absorption is a sustainable process owing to its easy operation, low cost, and negligible energy consumption. Thiourea groups demonstrate a strong affinity toward Au(III); therefore, microporous polythioureas (PTUs) are believed to be emerging absorbents and advantageous over other porous materials. Motivated by the successful preparation of porous organic polymers (POPs) via domino polymerization in our recent report, the one-pot strategy is introduced to the synthesis of microporous PTUs. During the polymerization process, thiourea knots are formed between the reaction of amino and diisothiocyanate monomers and integrated into networks by the simultaneous self-cross-linkage of alkynyl, acetyl, or double-bond groups on the amine monomers. Eventually, the family of POPs exhibits a maximum surface area of 561 m² g^–1. The thiourea groups and microporous structures endow the products with high Au(III) adsorption capacities (maximum: 1159 mg g^–1) and remarkable adsorption selectivity. Even in actual electronic waste, where the concentration of Au(III) (0.18 mg L^–1) is much lower than that of other interference ions (approximately 200 mg L^–1), 100% removal efficiency is accomplished. This achievement not only verifies the versatility of the domino polymerization methodology for the construction of POPs but also sheds light on the potential application of high-performance gold adsorbents in real scenarios.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 18","pages":"12491–12499"},"PeriodicalIF":4.7,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rheology Indicators for Assessing Bead Spreading of Hydrogels with Functional Rheology Modifiers for Direct Ink Writing: A Case Study for Chitosan–Graphene–Titanium Dioxide","authors":"Daniel Alves Heinze,&nbsp;, ,&nbsp;Supreet Thale,&nbsp;, ,&nbsp;Yimin Yao,&nbsp;, ,&nbsp;John P. Reynolds,&nbsp;, ,&nbsp;Mark L. Ballentine,&nbsp;, ,&nbsp;Christopher S. Griggs,&nbsp;, ,&nbsp;Christopher B. Williams,&nbsp;, and ,&nbsp;Michael J. Bortner*,&nbsp;","doi":"10.1021/acsapm.5c02887","DOIUrl":"https://doi.org/10.1021/acsapm.5c02887","url":null,"abstract":"<p >The rheological behavior of a model system composed of chitosan (CS) hydrogels with graphene and titanium dioxide (TiO₂) as functional fillers is studied to define a design space between rheology modification and bead spreading in direct ink writing (DIW) additive manufacturing (AM). Rheological results are combined with printed bead studies to determine how each formulation component affects extrudability and bead shape retention, identifying tan delta as the strongest indicator of good shape retention. Samples with tan delta &gt;1 exhibited ink spreading postdeposition, while those with predominantly solid-like behavior (tan delta ≤ 1 at low angular frequencies) and low-to-intermediate TiO₂ concentrations extruded well and maintained their shape in the time scale of printing. Further increasing functional particle content (25 wt % TiO₂) led to inconsistent extrusion that hindered adequate extrusion fidelity. Moreover, the time-dependent structural recovery of the formulations was strongly influenced by composition, with an increasing CS content being less detrimental to storage modulus recovery than the addition of fillers. Finally, the stress required for the inks to transition from a solid-like to a liquid-like state did not correlate with inconsistent extrusion, which were instead linked to high particle concentrations. This work provides insights into the effects of rheology modification using functional particles in DIW AM of hydrogel composites, ultimately helping to improve the efficiency of producing polymer-based hydrogel inks.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 18","pages":"12846–12856"},"PeriodicalIF":4.7,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsapm.5c02887","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Supramolecular Poly(Ionic Liquid)-Based Humidity and Deformation-Insensitive Sensor for Ultrasensitive Temperature Sensing","authors":"Mingkang Sun,&nbsp;, ,&nbsp;Yufeng Liao,&nbsp;, ,&nbsp;Shuai Tan,&nbsp;, ,&nbsp;Caihong Wang*,&nbsp;, and ,&nbsp;Yong Wu,&nbsp;","doi":"10.1021/acsapm.5c02515","DOIUrl":"https://doi.org/10.1021/acsapm.5c02515","url":null,"abstract":"<p >A variety of ionic liquid matter has been explored for superior temperature sensing with high-pressure resolution across a broad temperature range. However, it is not so wearable, since its performance is often compromised by environmental humidity or deformations. In this work, we present a linear poly(ionic liquid) elastomer via an <i>in situ</i> polymerization of the carefully selected hydrophobic ionic liquid monomer, tetra-<i>n</i>-butylphosphonium <i>p</i>-styrenesulfonate ([P₄₄₄₄][SS]), named as P-[P₄₄₄₄][SS]. P-[P₄₄₄₄][SS] exhibits remarkable thermosensitivity with a high sensitivity exceeding 8.1%/K and an exceptional resolution of 0.05 °C across an impressive range of −30 to 65 °C. The hydrophobic nature of the ions with assistance of the dense network ensures little water absorption even under 90% humidity condition, giving humidity-independent ionic conduction. The rigid π–π stacking in the polyanion and complex supramolecular cross-linkers within P-[P₄₄₄₄][SS] facilitates deformation energy dissipation, resulting in a deformation-insensitive temperature sensor. The temperature error is 0.3 °C under a deformation of 30%, indicating that the P-[P₄₄₄₄][SS] sensor is wearable with high reliability and adaptability. A wireless P-[P₄₄₄₄][SS]-based temperature sensor was fabricated to detect its wearable applications. These results underscore the importance of structure design for poly(ionic liquids), offering a promising avenue for future technological advancements.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 18","pages":"12594–12603"},"PeriodicalIF":4.7,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Succinic Acid as a Sustainable Curing Agent for High-Performance, Rapidly Reprocessable Epoxy Vitrimers","authors":"Christos Panagiotopoulos,&nbsp;, ,&nbsp;Melpo Karamitrou,&nbsp;, ,&nbsp;Costas A. Charitidis,&nbsp;, and ,&nbsp;Stamatina N. Vouyiouka*,&nbsp;","doi":"10.1021/acsapm.5c01589","DOIUrl":"https://doi.org/10.1021/acsapm.5c01589","url":null,"abstract":"<p >This work explores the use of succinic acid (SA) for developing a series of high-performance vitrimers with fast network rearrangement starting from a diepoxy oligomer (DGEBA). Succinic, being a short-chain biobased acid, permitted the formation of tailored epoxy vitrimers with desired properties, while its stability and crystalline nature provided curing latency. By tailoring the molar ratios of the reactive end-groups, catalyst type [Zn(acac)₂ or Sn(oct)₂] and loading, cross-link densities, reactive moieties, and mechanical and viscoelastic properties were readily manipulated. The resulting vitrimers exhibited a densely cross-linked network (<i>T</i>_g ∼ 94–133 °C, <i>E</i> ∼ 2.3–3 GPa, σ_max ∼ 61–68 MPa) combined with a small statistical distance between hydroxyl-ester moieties, therefore fast reprocessing/relaxation (e.g., 700 s at 160 °C), while being thermally stable (<i>T</i>_2% ∼ 330 °C, <i>T</i>_d ∼ 400 °C). All prepared vitrimers were easily reprocessable, achieving a retention of <i>E</i> even after three reprocessing cycles and 75 to 90% recovery of tensile strength (σ_max). Excess epoxy allowed for homopolymerization reactions, yielding a number of nonexchangeable bonds and fewer hydroxyl moieties, which increased brittleness while suppressing creep and relaxation abilities. For the 1:0.75 vitrimer, which provided the best balance between high cross-link density and rapid relaxation, the effect of Sn(oct)₂ loading (0, 1, 2.5, and 5% mol) was further explored. The present study offers a fine-tuning of vitrimer properties without altering any of the formulations and/or manufacturing processes associated with typical thermosets’ production at an industrial level.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 18","pages":"12197–12210"},"PeriodicalIF":4.7,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsapm.5c01589","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Doxorubicin-Loaded Injectable Hydrogel to Prevent Postoperative Recurrence of Colorectal Cancer and Accelerate Wound Healing","authors":"Chunyan Li,&nbsp;, ,&nbsp;Linyin Xu,&nbsp;, ,&nbsp;Yili Yin,&nbsp;, ,&nbsp;Fengjiao Wei,&nbsp;, ,&nbsp;Yanwei Hou,&nbsp;, ,&nbsp;Yingyu Su,&nbsp;, ,&nbsp;Jingya Zhao,&nbsp;, ,&nbsp;Chenxu Lv,&nbsp;, ,&nbsp;Tong Ren,&nbsp;, ,&nbsp;Saifei Lv,&nbsp;, ,&nbsp;Xue Yang*,&nbsp;, and ,&nbsp;Lu Yue*,&nbsp;","doi":"10.1021/acsapm.5c02048","DOIUrl":"https://doi.org/10.1021/acsapm.5c02048","url":null,"abstract":"<p >Postoperative recurrence and impaired wound healing remain two critical challenges in colorectal cancer treatment. Local chemotherapy, as a promising strategy to address these issues, has attracted considerable attention. This study aimed to develop a sodium alginate (SA)-based injectable hydrogel encapsulating doxorubicin (DOX), with the dual goals of preventing postoperative colorectal cancer recurrence and promoting wound healing. The medicated hydrogel, termed DOX@OSA^gel, enabled the sustained release of DOX, which effectively inhibited the proliferation of CT-26 cells and significantly suppressed tumor recurrence. Multiple lines of evidence strongly support this conclusion, including a marked reduction in tumor volumes, and a higher rate of tumor recurrence inhibition, and a substantial increase in apoptosis within CT-26 cells. Furthermore, Hematoxylin &amp; Eosin (H&amp;E) and Terminal deoxynucleotidyl transferase-mediated nick end labeling (TUNEL) staining assays further confirmed that DOX@OSA^gel effectively suppressed postoperative recurrence of CT-26 tumors. Moreover, treatment with cargo-free OSA^gel resulted in smaller wound sizes, accelerated wound closure, reduced inflammatory responses, and increased microangiogenesis, which indicated that the hydrogel accelerated wound healing. Collectively, DOX@OSA^gel presents a promising local chemotherapeutic platform with the dual potential to inhibit postoperative recurrence and promote wound healing in colorectal cancer treatment.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 18","pages":"12291–12303"},"PeriodicalIF":4.7,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of Odd–Odd Bio-Based Polyamide 5,9 as a Path to Practical High-Performance Green Materials","authors":"Peter M. Meyer,&nbsp;, ,&nbsp;Prerana Carter,&nbsp;, ,&nbsp;Ting-Han Lee,&nbsp;, ,&nbsp;Abigail Stanlick,&nbsp;, ,&nbsp;Carly J. Dolgos,&nbsp;, ,&nbsp;Michael J. Forrester,&nbsp;, and ,&nbsp;Eric W. Cochran*,&nbsp;","doi":"10.1021/acsapm.5c01938","DOIUrl":"https://doi.org/10.1021/acsapm.5c01938","url":null,"abstract":"<p >This study explores the properties of polyamide 5,9 (PA-5,9), a fully bio-derived alternative to conventional petroleum-based polyamides such as polyamide 6,6 (PA-6,6) and polyamide 6,10 (PA-6,10). The polyamide is synthesized using pentamethylene diamine (PMDA), derived from the decarboxylation of lysine, and azelaic acid, sourced from vegetable oils, offering a sustainable route to high-performance materials. PA-5,9 exhibits mechanical properties that are competitive with, and in some cases superior to, traditional polyamides, with an ultimate tensile strength (UTS) of 48 MPa and elongation at break of 217%. Thermal stability, water uptake, and gas transport characteristics are similar, and a lower melting temperature facilitates processing. Like other bio-based industrial polyamides such as polyamide 11 (PA-11) and polyamide 4,10 (PA-4,10), this bio-derived polyamide offers a reduced carbon footprint due to its lower processing temperature and competitive cost of raw materials, positioning it as a valuable material in industries seeking sustainable materials. Further analysis demonstrates the pseudohexagonal odd–odd chain structure of PA-5,9 does not compromise its hydrogen bonding ability, maintaining crystallinity levels comparable to standard industrial resins. These results indicate PA-5,9 is well-suited for automotive, textiles, and electronics applications, presenting a promising future for bio-based plastics.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 18","pages":"12260–12268"},"PeriodicalIF":4.7,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of Multifunctional Silicone Rubber Composites with Expanded Graphite-Encapsulated Phase Change Materials for Thermal Management","authors":"Letian Zhou,&nbsp;, ,&nbsp;Huan Zhang,&nbsp;, ,&nbsp;Zhao Yu Lu,&nbsp;, ,&nbsp;Zhenxu Nie,&nbsp;, ,&nbsp;Junyan Wang,&nbsp;, ,&nbsp;Shui Hu*,&nbsp;, ,&nbsp;Jingchao Li*,&nbsp;, and ,&nbsp;Yonglai Lu*,&nbsp;","doi":"10.1021/acsapm.5c02616","DOIUrl":"https://doi.org/10.1021/acsapm.5c02616","url":null,"abstract":"<p >Organic phase change materials (PCMs), with their stable operating temperatures, high heat storage capabilities, and noncorrosive properties, hold significant potential for efficient heat storage and thermal management applications. However, their low thermal conductivity and leakage susceptibility severely restrict the practical applications of PCMs. Herein, we developed a phase change material and used it as a filler to prepare a phase change composite elastomer through integrating paraffin wax (PW) as the thermal storage material and expanded graphite (EG) as both thermal conductivity enhancer and structural support. Boron nitride (BN) in the composites serves dual functions: constructing a synergistic dual thermally conductive network with EG while ensuring electrical insulation. Then, the multifunctional elastomer composites filled with PCM led to good thermal conductivity of 1.18 W·m^–1·K^–1, energy storage density (14.58 J/g), and high electrical resistance of more than 10¹⁴ (Ω·cm). The network structure, as evidenced by characterization, achieves the effective encapsulation of PCMs within the elastomer matrix while maintaining structural integrity during phase transitions. This research offers an approach to creating multifunctional, thermally conductive thermal interface material with good heat storage and low thermal resistance.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 18","pages":"12671–12681"},"PeriodicalIF":4.7,"publicationDate":"2025-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stimulated Trafficking of RNAi to Parathyroid toward Its Angiogenetic Vessels for Suppressed Secretion of Parathyroid Hormone","authors":"Jinxuan He,&nbsp;, ,&nbsp;Zhixiang Mou,&nbsp;, ,&nbsp;Lan Chen,&nbsp;, ,&nbsp;Qixian Chen,&nbsp;, ,&nbsp;Xuduan Chen*,&nbsp;, and ,&nbsp;Lixin Wei*,&nbsp;","doi":"10.1021/acsapm.5c02691","DOIUrl":"https://doi.org/10.1021/acsapm.5c02691","url":null,"abstract":"<p >Secondary hyperparathyroidism is driven by pathological overproduction of parathyroid hormone. Surgery is invasive, drug therapy offers only transient control, and both carry substantial side effects. Previous efforts to deliver siRNA to the parathyroid glands achieved only marginal efficacy because the constructs lacked a targeting ligand to overcome the organ’s limited vascular permeability and were rapidly cleared by renal filtration. This study provides a targeted RNA interference therapeutic strategy for treatment of secondary hyperparathyroidism by leveraging the angiogenic characteristics of parathyroid glands via systemic route. Particularly, we manufactured an Arg-Gyl-Asp (RGD)-conjugated siRNA delivery system that exploits the overexpression of integrins and increased vascular permeability in parathyroid glands to achieve preferential siRNA accumulation. The multifunctional cationic copolymers of RGD-poly(ethylene glycol) (PEG)-polylysine-azido [PLys(N₃)] and PLys(ss-dibenzocyclooctyne: DBCO) were synthesized and characterized, demonstrating their ability to formulate robust nanocomplexes with small interference RNA [(siRNA): knockdown of parathyroid hormone (PTH)] by virtue of favorable reversible disulfide cross-linking (based on click reaction) post electrostatic complexation. These nanocomplexes exhibited prolonged systemic circulation, preferential accumulation in the angiogenic parathyroid glands, and active intracellular delivery, leading to significant suppression of PTH expression. In a parathyroid hyperplasia mouse model, the siPTH delivery construct from RGD–PEG-PLys(N₃)&amp;PLys(ss-DBCO) substantially reduced the serum PTH levels to near-normal values, highlighting the therapeutic potential of our siRNA delivery system. Hence, this RNAi approach outperforms conventional modalities by achieving rapid, potent, and sustained gene knockdown without surgical risk or chronic pharmacologic burden, establishing a paradigm for precision endocrine therapy.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 18","pages":"12720–12731"},"PeriodicalIF":4.7,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Topology-Driven Mechanical Behavior of Liquid Crystal Elastomers via a Dynamic Mechanical Analyzer","authors":"Yan-Ting Lin,&nbsp;, ,&nbsp;Chung-Yu Kuo,&nbsp;, ,&nbsp;Kai-Hung Chuang,&nbsp;, and ,&nbsp;Chun-Yen Liu*,&nbsp;","doi":"10.1021/acsapm.5c02286","DOIUrl":"https://doi.org/10.1021/acsapm.5c02286","url":null,"abstract":"<p >Traditional vitrimers are cross-linked materials with plasticity that can be reprogrammed through transesterification reactions. To impart shape memory functionality to vitrimers, this study employed liquid crystal monomers and synthesized a series of reprogrammable shape-memory elastomers via Michael addition. To understand how a material deforms under sinusoidal stress and to measure the resulting strain, a dynamic mechanical analyzer (DMA) was employed to investigate the viscoelastic behavior of the synthesized materials. By analyzing their response to periodic stress, key mechanical properties were determined. DMA and thermal actuation tests revealed the phase transition characteristics of the elastomer. Stress relaxation experiments revealed that the synthesized liquid crystal elastomers (LCEs) exhibited significant stress relaxation behavior at 80 °C. Furthermore, when the LCEs were heated to 80 °C without applied stress, their molecular alignment decreased. The characteristic properties of the liquid crystal elastomers, as well as the thermal actuation behavior of the synthesized 5LCE film, were further confirmed via these analyses.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 18","pages":"12450–12458"},"PeriodicalIF":4.7,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsapm.5c02286","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Woven Coiled Nylon Artificial Muscles with Large Tensile Stress and High Stability","authors":"Jing Dai,&nbsp;, ,&nbsp;Yazhou Yuan,&nbsp;, ,&nbsp;Hui Xu,&nbsp;, ,&nbsp;Sen Lin,&nbsp;, ,&nbsp;Chang Liu,&nbsp;, ,&nbsp;Hao Zhang,&nbsp;, ,&nbsp;Zhaohua Lin*,&nbsp;, ,&nbsp;Yunhong Liang,&nbsp;, and ,&nbsp;Suqian Ma*,&nbsp;","doi":"10.1021/acsapm.5c01590","DOIUrl":"https://doi.org/10.1021/acsapm.5c01590","url":null,"abstract":"<p >Artificial muscles have a wide range of potential applications and can be fabricated by using a variety of materials. To meet the demands of various applications, artificial muscles must exhibit excellent performance characteristics, such as a large contraction stroke, high contraction stress, and long cycle life. Here, we report a coiled nylon fiber artificial muscle and a triple-braided nylon fiber (TBNF) artificial muscle, which are prepared by the weaving method for twisted nylon fiber. Driven by Joule heating, the TBNF demonstrates excellent actuation properties, including 10.2% tensile stroke, 527.8 J/kg work capacity, and 9600 stable cycles. Moreover, the TBNF muscle can generate a reversible tensile stress of 5.85 MPa, which is 20 times that of human skeletal muscle. The TBNF muscles are demonstrated to drive a robotic car movement and bionic skeletal actions such as lifting weights and moving legs. In addition, due to the contraction driven properties of the TBNF muscle, it can be applied in microcurrent switches to control lighting. Consequently, electrothermally driven nylon fiber artificial muscles have significant applications in bionic robotics, prosthetic exoskeletons, and beyond.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 18","pages":"12187–12196"},"PeriodicalIF":4.7,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}