ACS Applied Polymer Materials最新文献_第2页

Preparation and Properties of Dual Cross-Linking Acrylic Pressure-Sensitive Adhesives for Flexible Displays

IF 4.4 2区化学

ACS Applied Polymer Materials Pub Date : 2025-04-15 DOI: 10.1021/acsapm.5c0026910.1021/acsapm.5c00269

Ran Zong, Xinli Hu, Shuangyi Liu, Aosheng Zhong and Baoqing Shentu*,

{"title":"Preparation and Properties of Dual Cross-Linking Acrylic Pressure-Sensitive Adhesives for Flexible Displays","authors":"Ran Zong, Xinli Hu, Shuangyi Liu, Aosheng Zhong and Baoqing Shentu*, ","doi":"10.1021/acsapm.5c0026910.1021/acsapm.5c00269","DOIUrl":"https://doi.org/10.1021/acsapm.5c00269https://doi.org/10.1021/acsapm.5c00269","url":null,"abstract":"Aiming to satisfy the requirements of pressure-sensitive adhesives (PSAs) for flexible displays, 2-[[[6-[3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido]hexyl]carbamoyl] oxy]ethyl acrylate (Upy-HDI-HEA) was synthesized, and a series of dual cross-linking EHA-co-HEA copolymers with multiple hydrogen bonds were prepared. The effects of the Upy-HDI-HEA content on the EHA-co-HEA copolymers’ chemical structure, thermal properties, viscoelasticity, mechanical properties, and adhesion performance were comprehensively investigated via in situ Fourier transform infrared (FT-IR), differential scanning calorimetry (DSC), mechanical testing, and adhesion testing. The multiple hydrogen bonds acting as strong physical cross-linking enhance the deformation resistance of EHA-co-HEA copolymers. Moreover, compared to chemical cross-linking, the multiple hydrogen bonds allow for a certain degree of unhindered movement and energy dissipation, which benefits the flexibility and peel resistance of EHA-co-HEA copolymers. Consequently, relatively low storage moduli and glass transition temperatures were observed in all EHA-co-HEA copolymers. Young’s modulus, recovery rate, and cyclic stability of EHA-co-HEA copolymers increase with the rising Upy-HDI-HEA content. Also, the loop tack, 180° peel strength, and shear strength of EHA-co-HEA copolymers significantly improved, showing a better adhesion performance than commercial PSAs.","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 8","pages":"5025–5033 5025–5033"},"PeriodicalIF":4.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867517","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}

引用次数: 0

Dual Dynamic Network Cross-Linked Recyclable, Self-Healing Biobased Elastomer with Electromagnetic Shielding and Photothermal Conversion Properties

IF 4.4 2区化学

ACS Applied Polymer Materials Pub Date : 2025-04-15 DOI: 10.1021/acsapm.5c0047910.1021/acsapm.5c00479

Xinyu Wang, Xin Wang, Shuyang Xing, Wei Kuang* and Huilin Tian*,

{"title":"Dual Dynamic Network Cross-Linked Recyclable, Self-Healing Biobased Elastomer with Electromagnetic Shielding and Photothermal Conversion Properties","authors":"Xinyu Wang, Xin Wang, Shuyang Xing, Wei Kuang* and Huilin Tian*, ","doi":"10.1021/acsapm.5c0047910.1021/acsapm.5c00479","DOIUrl":"https://doi.org/10.1021/acsapm.5c00479https://doi.org/10.1021/acsapm.5c00479","url":null,"abstract":"The incorporation of biobased materials into elastomers represents a critical approach to mitigating carbon emissions and combating environmental degradation. Epoxy natural rubber (ENR), Curdlan(CD), and other bioderived polymers have attracted considerable attention for their potential in developing self-healing and recyclable elastomeric composites. In this study, a novel biobased elastomer integrating dynamic boroxine bonds and β-hydroxy-ester networks was synthesized through the reaction between the epoxy groups of ENR, the amino groups of 3-aminophenylboronic acid (APBA), and the carboxyl groups of tartaric acid (TA). The resulting material exhibited exceptional mechanical properties, including a tensile strength of 9.07 MPa, and achieved an 84.4% self-healing efficiency within 1 h. Notably, the elastomer demonstrated a peak electromagnetic interference shielding effectiveness of 39.72 dB in the X-band (8.2–12.4 GHz), coupled with shape memory functionality and photothermal conversion capabilities (absorbing ∼95% of visible-near-infrared light). These multifunctional characteristics position the material as a promising candidate for next-generation biobased electronic shielding components, particularly in the emerging field of sustainable materials for smart devices.","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 8","pages":"5180–5188 5180–5188"},"PeriodicalIF":4.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867518","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}

引用次数: 0

Magnetically Triggered Drug-Release System and Magnetic Caged Calcium Using Iron Oxide Nanoparticles and Hydrogels

IF 4.4 2区化学

ACS Applied Polymer Materials Pub Date : 2025-04-15 DOI: 10.1021/acsapm.5c0065210.1021/acsapm.5c00652

Satoshi Okada*, Yuka Takashima and Hiroyuki Nakamura*,

{"title":"Magnetically Triggered Drug-Release System and Magnetic Caged Calcium Using Iron Oxide Nanoparticles and Hydrogels","authors":"Satoshi Okada*, Yuka Takashima and Hiroyuki Nakamura*, ","doi":"10.1021/acsapm.5c0065210.1021/acsapm.5c00652","DOIUrl":"https://doi.org/10.1021/acsapm.5c00652https://doi.org/10.1021/acsapm.5c00652","url":null,"abstract":"Magnetic field-responsive materials have been utilized as drug carriers that release payload drugs under a magnetic field, allowing precise spatiotemporal control of drug release. These materials also have potential as chemical tools that can regulate signal transduction in deep regions of the body. However, they have typically been specialized either as drug carriers or as chemical tools. To address these challenges, we developed here a versatile alternating magnetic field (AMF)-responsive platform consisting of polymer-coated iron oxide nanoparticles (PCIOs) and thermoresponsive hydrogels based on poly(N-isopropylacrylamide) (PNIPAM). We demonstrated that PCIOs could increase the medium temperature from 22 to 45 °C within 5 min under an AMF of 16 mT and 386 kHz, resulting in the release of the neutral drug model PM-546 from the PNIPAM-based hydrogel under physiological conditions. The combination system was further utilized as a chemical tool for controlling extracellular calcium ions (Ca2+), which are crucial for membrane potential regulation, bone resorption, cytokine induction, and intestinal homeostasis. The chemical tool, termed magnetic caged calcium, was constructed by replacing the drug carrier gel with a thermoresponsive Ca2+-binding gel based on PNIPAM coated by poly(methacrylic acid). This gel reversibly adsorbed Ca2+ in a submillimolar range as the temperature increased from 25 to 45 °C. The magnetic caged calcium significantly decreased [Ca2+] by 0.18 ± 0.06 mM under the AMF exposure for 1 h. These results indicate that the PCIO–hydrogel combination serves as a foundation for AMF-induced drug-release systems operating under physiological conditions and for magnetic caged systems regulating extracellular calcium, leading to broad applications in both medical applications and fundamental studies of signal transduction in deep tissues in the future.","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 8","pages":"5250–5258 5250–5258"},"PeriodicalIF":4.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867476","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}

引用次数: 0

Tough, Fatigue-Resistant Elastomer Networks via Dynamic Interactions

IF 4.4 2区化学

ACS Applied Polymer Materials Pub Date : 2025-04-15 DOI: 10.1021/acsapm.5c0047110.1021/acsapm.5c00471

Ben-Xiang Hu, Hao-Jia Guo, Xiangcheng Pan, Shuangquan Liao* and Ming-Chao Luo*,

{"title":"Tough, Fatigue-Resistant Elastomer Networks via Dynamic Interactions","authors":"Ben-Xiang Hu, Hao-Jia Guo, Xiangcheng Pan, Shuangquan Liao* and Ming-Chao Luo*, ","doi":"10.1021/acsapm.5c0047110.1021/acsapm.5c00471","DOIUrl":"https://doi.org/10.1021/acsapm.5c00471https://doi.org/10.1021/acsapm.5c00471","url":null,"abstract":"Elastomers commonly experience failure due to crack propagation when subjected to external loads. Currently, significant focus has been placed on enhancing the resistance to crack propagation. Various methods exist to improve resistance to crack growth under monotonic loads, which is characterized by fracture energy (Gc) but hardly contributes to crack propagation resistance under cyclic loads, which is characterized by intrinsic fracture energy (Γ0). In this work, we demonstrate an effective strategy to simultaneously improve Gc and Γ0 by dynamic interactions. Diazo compounds, as model cross-linkers, are used to design covalent cross-linking networks and dynamic disulfide bond networks. Experimental results show that covalent cross-linking networks are highly flaw-sensitive, while dynamic disulfide bond networks are insensitive to flaws. As covalent cross-linking networks are progressively replaced by dynamic disulfide bond networks, Gc and Γ0 increase to 770 and 2800 J/m2, respectively. This enhancement is attributed to stress deconcentration through dynamic interactions. The strategy presented in this work provides an approach to simultaneously improve crack propagation resistance under monotonic and cyclic loads, opening an enormous design space for general applications.","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 8","pages":"5173–5179 5173–5179"},"PeriodicalIF":4.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867516","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}

引用次数: 0

To Hop or Not to Hop: Unveiling Different Modes of Ion Transport in Solid Polymer Electrolytes through Molecular Dynamics Simulations

IF 4.4 2区化学

ACS Applied Polymer Materials Pub Date : 2025-04-15 DOI: 10.1021/acsapm.4c0372410.1021/acsapm.4c03724

Harish Gudla, Anne Hockmann, Daniel Brandell and Jonas Mindemark*,

{"title":"To Hop or Not to Hop: Unveiling Different Modes of Ion Transport in Solid Polymer Electrolytes through Molecular Dynamics Simulations","authors":"Harish Gudla, Anne Hockmann, Daniel Brandell and Jonas Mindemark*, ","doi":"10.1021/acsapm.4c0372410.1021/acsapm.4c03724","DOIUrl":"https://doi.org/10.1021/acsapm.4c03724https://doi.org/10.1021/acsapm.4c03724","url":null,"abstract":"Although the basic modes of ion transport in solid polymer electrolytes (SPEs) are already classified and well-described, their distribution in typical polymer electrolytes is not clear and neither are the effects on the distribution by different degrees of ion–ion and ion–polymer interactions. Here, the ion-transport mechanisms in poly(ethylene oxide) are studied along with poly(ε-caprolactone) at different molecular weights and LiTFSI salt concentrations using molecular dynamics simulations. Through tracking of the cation coordination changes, three transport mechanisms are categorized, i.e., ion hopping, continuous motion (successive exchange of the coordination sphere), and vehicular transport. The observed dominant transport mechanism is in all cases continuous motion, which changes from polymer-mediated to anion-mediated with increasing salt concentration, while polymer-mediated vehicular transport is not observed to be a major contributor to cation transport. In both systems, ion hopping is also essentially absent, as can be expected in systems with strong ion–polymer interactions. The results illustrate how the usual description of ion transport in polymer electrolytes as coupled to segmental motions is too simplistic to catch the full essence of the ion-transport phenomena, whereas the frequently used notion of “ion hopping” in the majority of cases is incorrect for SPEs.","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 8","pages":"4716–4724 4716–4724"},"PeriodicalIF":4.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsapm.4c03724","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867521","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}

引用次数: 0

Epoxy-Functionalized Polysiloxane and DOPO Synergistically Enhance Flame Retardancy of Epoxy Resin Composites

IF 4.4 2区化学

ACS Applied Polymer Materials Pub Date : 2025-04-14 DOI: 10.1021/acsapm.5c0053110.1021/acsapm.5c00531

Yang Zhang, Xuan Wu, Yixiao Shi, Dan Liao, Jiaen Qian, Chuan Wu*, Hong Dong, Qinghua Pan, Zhirong Qu and Yanjiang Song*,

{"title":"Epoxy-Functionalized Polysiloxane and DOPO Synergistically Enhance Flame Retardancy of Epoxy Resin Composites","authors":"Yang Zhang, Xuan Wu, Yixiao Shi, Dan Liao, Jiaen Qian, Chuan Wu*, Hong Dong, Qinghua Pan, Zhirong Qu and Yanjiang Song*, ","doi":"10.1021/acsapm.5c0053110.1021/acsapm.5c00531","DOIUrl":"https://doi.org/10.1021/acsapm.5c00531https://doi.org/10.1021/acsapm.5c00531","url":null,"abstract":"A series of intrinsic flame-retardant epoxy resins were prepared by adding dual epoxy-functionalized polysiloxane (PDMS-GE) and DOPO to the epoxy resin (EP) of the DGEBA/DDM (60/20) system for curing reaction. The results showed that PDMS-GE and DOPO had excellent synergistic flame retardancy on EP, which was conducive to the formation of large-sized SiO2 particles and the formation of stable and dense char when the material burns. In this work, the LOI of the composite DGEBA/DDM/PDMS-GE/DOPO (60/20/5/5) reached 37.3, which was better than that of the material with only PDMS-GE or DOPO added and was 11.4 higher than that of neat EP. Compared with neat EP, the PHRR and THR of the CCT test were also reduced by 51.0 and 48.0%, respectively, and its UL-94 test reached the V-0 level. At the same time, the material also showed good hydrophobicity, and its water contact angle reached 102.63°. Based on the good dielectric properties and molecular chain flexibility of the PDMS structure, the dielectric constant of the prepared composite material at 14.2 GHz was reduced to 2.63, and the impact strength was also improved by about 33% relative to neat EP.","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 8","pages":"5198–5211 5198–5211"},"PeriodicalIF":4.4,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867390","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}

引用次数: 0

Synergistic Modification of Carrageenan Films with Plasticizers and Cross-Linker: A Promising Approach to Tunable Functionalities

IF 4.4 2区化学

ACS Applied Polymer Materials Pub Date : 2025-04-14 DOI: 10.1021/acsapm.4c0413910.1021/acsapm.4c04139

Rubie Mavelil-Sam, Elizabeth Mariya Ouseph, Hanna J. Maria, Miran Mozetič, Gregor Primc, Janez Kovač, Aneesa Padinjakkara, Katia Alexander, Mohan V. Jacob and Sabu Thomas*,

{"title":"Synergistic Modification of Carrageenan Films with Plasticizers and Cross-Linker: A Promising Approach to Tunable Functionalities","authors":"Rubie Mavelil-Sam, Elizabeth Mariya Ouseph, Hanna J. Maria, Miran Mozetič, Gregor Primc, Janez Kovač, Aneesa Padinjakkara, Katia Alexander, Mohan V. Jacob and Sabu Thomas*, ","doi":"10.1021/acsapm.4c0413910.1021/acsapm.4c04139","DOIUrl":"https://doi.org/10.1021/acsapm.4c04139https://doi.org/10.1021/acsapm.4c04139","url":null,"abstract":"Multifunctional biobased films with improved physicomechanical properties were fabricated by incorporating glycerol (G), sorbitol (S), and potassium chloride (KCl) into a cost-effective kappa-carrageenan matrix. Both the plasticizers and the cross-linking agent were mixed with the polymer matrix to form uniform, smooth, and transparent high-quality films of thickness 0.060 mm. Key properties of these films could be fine-tuned by varying concentrations of glycerol and sorbitol, and were further enhanced by the addition of KCl. Of the materials tested, glycerol-containing films, with and without added KCl, exhibited optimum mechanical and water interactive properties for biomedical applications, especially for wound healing. Meanwhile, films incorporated with sorbitol and KCl exhibited superior tensile properties and the lowest hydrophilicity, an ideal combination for food packaging applications. In the case of uncross-linked sorbitol-containing films, a phase transition was observed at higher temperatures, leading to the formation of an immiscible phase that led to two distinct tan δ peaks due to the polymer chain mobility and their relaxation behavior. These results suggest that the highly versatile nature of carrageenan films can be effectively optimized by incorporating appropriate and readily available plasticizers and cross-linkers to suit a wide range of real-life applications, providing an attractive alternative to the currently used non-eco-friendly materials.","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 8","pages":"4799–4812 4799–4812"},"PeriodicalIF":4.4,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867431","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}

引用次数: 0

Reprocessable Fluoro-Glycidyl Acrylate-Butadiene Rubbers via In Situ Cross-Linker Chain Extension and Hydrophobic Silica: Achieving Enhanced Tensile Strength and Surface Fluorine Enrichment

IF 4.4 2区化学

ACS Applied Polymer Materials Pub Date : 2025-04-11 DOI: 10.1021/acsapm.5c0035210.1021/acsapm.5c00352

Zhu Xia, Xiaoning Hou, Hang Zheng, Linyu Li, Zhanwei Feng, Jianyun He* and Chenxi Bai*,

{"title":"Reprocessable Fluoro-Glycidyl Acrylate-Butadiene Rubbers via In Situ Cross-Linker Chain Extension and Hydrophobic Silica: Achieving Enhanced Tensile Strength and Surface Fluorine Enrichment","authors":"Zhu Xia, Xiaoning Hou, Hang Zheng, Linyu Li, Zhanwei Feng, Jianyun He* and Chenxi Bai*, ","doi":"10.1021/acsapm.5c0035210.1021/acsapm.5c00352","DOIUrl":"https://doi.org/10.1021/acsapm.5c00352https://doi.org/10.1021/acsapm.5c00352","url":null,"abstract":"Fluorinated (meth)acrylate polymers have gained significant attention in marine antifouling, aerospace, and microelectronics applications owing to their exceptional surface properties. Current research focuses on two distinct approaches: mechanical reinforcement through cross-linking and fillers and surface hydrophobicity improvement via surface fluorine enrichment. However, these strategies present inherent limitations─the former compromises hydrophobicity by restricting fluorinated side chain migration, while the latter often sacrifices mechanical integrity. To address this challenge, we developed a reprocessable fluoro-glycidyl acrylate-butadiene rubber (FGBR) incorporating in situ cross-linker chain extension and hydrophobic silica filler. The introduction of a chain extender (20 wt %) enabled in situ formation of extended cross-linked networks, yielding remarkable 114% and 162% enhancements in tensile strength and toughness, respectively. Concurrently, hydrophobic silica (40 phr) effectively reduced interchain polarity, promoting fluorinated side chain migration to the surface. This synergistic approach achieved concurrent optimization of mechanical properties (18.6 MPa tensile strength) and surface hydrophobicity (132.2° water contact angle). Notably, the dynamic β-hydroxy ester and disulfide bonds within the cross-linked network endowed the material with excellent thermal reprocessability. This design, combining in situ chain extension with silica nanocomposites, represents a significant advancement in fluorinated methacrylate elastomers.","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 8","pages":"5077–5088 5077–5088"},"PeriodicalIF":4.4,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867605","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}

引用次数: 0

Mechanochromic Pure Polymer Hydrogels with Dual Stress Response, Tunable Interference Colors, and Superior Environmental Tolerance

IF 4.4 2区化学

ACS Applied Polymer Materials Pub Date : 2025-04-11 DOI: 10.1021/acsapm.5c0046710.1021/acsapm.5c00467

Sijie Gong, Chaoqun Xu, Liqin Jiang, Jia Liu, Jun Ma, Juan Yu*, Yimin Fan and Zhiguo Wang,

{"title":"Mechanochromic Pure Polymer Hydrogels with Dual Stress Response, Tunable Interference Colors, and Superior Environmental Tolerance","authors":"Sijie Gong, Chaoqun Xu, Liqin Jiang, Jia Liu, Jun Ma, Juan Yu*, Yimin Fan and Zhiguo Wang, ","doi":"10.1021/acsapm.5c0046710.1021/acsapm.5c00467","DOIUrl":"https://doi.org/10.1021/acsapm.5c00467https://doi.org/10.1021/acsapm.5c00467","url":null,"abstract":"Mechanochromic hydrogels typically rely on complex nanostructures and additives, limiting their simplicity and stability. In this study, a series of pure polymer hydrogels (MPPHs) were synthesized by adjusting polymer concentration and cross-linking density, without the need for additional functional components. These hydrogels exhibited dual-response color changes under both compressive and tensile strains. The optimal 25PAM0.5 hydrogel showed vibrant interference color shifts from grayish white to pastel violet under 60% compressive strain, while the 25PAM0.04 hydrogel changed from deep purple to bright yellow at tensile strains up to 1500%. Birefringence analysis confirmed a strain-induced structural transformation with a birefringence value of 1.4 × 10–4, surpassing most pure polymer hydrogels. Notably, the MPPHs maintained stable mechanochromic responses after 1000 compression cycles and 500 tensile cycles. To enhance environmental stability, a transparent hydrophobic poly(lauryl acrylate) coating was applied, significantly improving resistance to swelling and dehydration. These results highlight the unique combination of tunable optical properties, mechanical flexibility, and environmental stability, positioning MPPHs as promising materials for smart applications.","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 8","pages":"5161–5172 5161–5172"},"PeriodicalIF":4.4,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867619","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}

引用次数: 0

Poly(acetylene azobenzene oligoethylene glycol) with Concurrently Reversible Photomechanical and Photoelectric Responsiveness upon Ultraviolet Irradiation

IF 4.4 2区化学

ACS Applied Polymer Materials Pub Date : 2025-04-11 DOI: 10.1021/acsapm.5c0054310.1021/acsapm.5c00543

Xinfeng Tao, Ciyin Shen, Qixia Hua, Sheng Jin, Yuan Yao* and Shaoliang Lin*,

{"title":"Poly(acetylene azobenzene oligoethylene glycol) with Concurrently Reversible Photomechanical and Photoelectric Responsiveness upon Ultraviolet Irradiation","authors":"Xinfeng Tao, Ciyin Shen, Qixia Hua, Sheng Jin, Yuan Yao* and Shaoliang Lin*, ","doi":"10.1021/acsapm.5c0054310.1021/acsapm.5c00543","DOIUrl":"https://doi.org/10.1021/acsapm.5c00543https://doi.org/10.1021/acsapm.5c00543","url":null,"abstract":"Most multiple-responsive materials are limited to a single response mode to a stimulus. Herein, we present a unique conjugate azopolymer, poly(acetylene azobenzene oligoethylene glycol) (P(AAzo-OEG4)), that concurrently exhibits both reversible photomechanical and photoelectric responsiveness upon ultraviolet (UV) light stimulus. This azopolymer features a polyacetylene backbone adorned with azobenzene pendants and terminated with oligoethylene glycol (OEG) tails. The integration of a conjugated skeleton with azobenzene pendants endows the polymer with specific phototunable mechanical and electrical responsiveness, along with a photothermal effect that enhances its photomobile and photoelectric performance. The OEG tails promote the solubility and film-forming capabilities of the polymer. When doped with iodine, P(AAzo-OEG4) demonstrates a repeatable doubling of conductivity upon UV irradiation, owing to the photoelectric and photothermal effect. Remarkably, P(AAzo-OEG4) exhibits reversible three-state conductivity in response to cyclic irradiation with UV light, blue light, and natural light, making it a promising candidate for photocontrolled logical sensors. Furthermore, P(AAzo-OEG4)/polyethylene (PE) and P(AAzo-OEG4)/polyimide (PI) composite films show amphotropic bending due to the isomerization-induced volume expansion. These two types of composite films could be configured as a photodriven gripper and a photocontrolled switch, respectively. This study provides a straightforward strategy for fabricating photoactuators and photoelectric devices by using a single material, opening up promising avenues in the design of multifunctional photosensitive polymers.","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 8","pages":"5212–5220 5212–5220"},"PeriodicalIF":4.4,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867653","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}

引用次数: 0