ACS Applied Polymer Materials最新文献

{"title":"Percolation-Tunneling Synergistic Coupling: A Composite Design Strategy for High-Sensitivity Wide-Range Flexible Pressure Sensors","authors":"Jialong Shi,&nbsp;, ,&nbsp;Leijin Fan,&nbsp;, ,&nbsp;Xiaofeng Yang*,&nbsp;, and ,&nbsp;Hu Sun*,&nbsp;","doi":"10.1021/acsapm.5c02591","DOIUrl":"https://doi.org/10.1021/acsapm.5c02591","url":null,"abstract":"<p >Flexible pressure sensors have attracted widespread interest due to their enormous potential for applications. At present, research on these sensors can achieve low pressure, high sensitivity, or a wide detection range. However, the sensitivity in high-pressure areas (150–300 kPa) typically decays to &lt;0.1 kPa^–1, making it difficult to maintain high sensitivity under high pressure. Herein, this study proposes a flexible pressure sensor based on a percolation-tunneling synergistic coupling mechanism. The sensor comprises PVA/H₃PO₄/CNTs ionic hydrogel film (PHCF) and a PVDF nanofiber film. The top and bottom layers of the sensor consist of PHCF. Under pressure, the deformation of PHCF will lead to the redistribution of carbon nanotubes, resulting in an increase in the number of seepage paths. The middle layer is a PVDF nanofiber film. On the one hand, it acts as an insulating layer, reducing the initial contact area between PHCF, thus generating a lower and more stable initial current. On the other hand, due to its piezoelectric effect, it reduces the tunneling barrier height and improves the tunneling probability of electrons in PHCF through the PVDF layer. Benefiting from the coupling of the PHCF permeation network and PVDF modulated tunnel barrier, the sensor achieved a high sensitivity of 178.4 kPa^–1 at low pressure (0–10 kPa). It also provides a wide measurement range of 0–300 kPa and a sensitivity of up to 20.2 kPa^–1 under full pressure. Sensors achieve the unity of low-cost production, ease of manufacturing, and high detection performance. The device exhibits a rapid response time of 97 ms along with an 85 ms relaxation time and excellent cyclic pressure stability (3000 cycles). Furthermore, the sensor validates its feasibility in monitoring human physiological signals and serves as an effective platform for Morse code signal transmission. These outstanding performances highlight the enormous potential of the sensor in pressure monitoring applications.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 18","pages":"12643–12656"},"PeriodicalIF":4.7,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134649","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":"Bio-Based Monoepoxy-Terminated Polysiloxane-Modified Coating for Hydrophobic and Oil-Resistant Paper","authors":"Dongsheng Ma,&nbsp;, ,&nbsp;Xiaofeng Li,&nbsp;, ,&nbsp;Yang Liu,&nbsp;, ,&nbsp;Xu Liao,&nbsp;, and ,&nbsp;Xiumei Zhang*,&nbsp;","doi":"10.1021/acsapm.5c02189","DOIUrl":"https://doi.org/10.1021/acsapm.5c02189","url":null,"abstract":"<p >Nondegradable waste has caused a series of environmental issues, including soil pollution and marine microplastics. In this study, we report a green, recyclable, and easily available material for preparing hydrophobic and oil-resistant packaging paper. A grafting dispersion of monoepoxy-terminated polysiloxane (mono-PDMS-E) grafted chitosan (CS) and cellulose nanofibers (CNFs) was prepared via a one-pot method. The CNFs-CS/mono-PDMS-E complex was cast into films, and its successful preparation was confirmed by ¹H NMR and FTIR analyses. With increasing CNF content, the water and oil contact angles of the CNFs-CS/mono-PDMS-E films decreased, while their thermal stability and mechanical properties improved. The CNFs-CS/mono-PDMS-E was then applied as a coating for food packaging paper. When CNF content was 3%, and the coating weight was 4.85 ± 1.2 g/m², the coated paper (CNFs-CS/mono-PDMS-E-Paper) exhibited excellent hydrophobicity (Cobb₆₀: 20.48 g/m²) and oil resistance (Kit rating: 9.5/12). The whiteness, tensile strength, and tear index of the paper were measured before and after coating. Surface elemental analysis was performed via XPS, and a structural model was constructed. SEM was used to analyze the effect of CNF addition on microphase separation in the CNFs-CS/mono-PDMS-E films and the changes in paper porosity after coating. The recyclability of the pulp was verified by repulping and washing treatments on the CNFs-CS/mono-PDMS-E-Paper (CNFs = 7%) sample. This study provides a perspective for reducing soil pollution and marine microplastics. The CNFs-CS/mono-PDMS-E-Paper is expected to promote sustainable development due to its readily available, green, and recyclable features.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 18","pages":"12390–12404"},"PeriodicalIF":4.7,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134725","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":"Hydrophobic, Mechanically Robust, and UV-Blocking Paper Enabled by Lignin Reinforcement","authors":"Qiang Wang,&nbsp;, ,&nbsp;Jinshan Zhang,&nbsp;, ,&nbsp;Xin Li,&nbsp;, ,&nbsp;Xiujing Liu,&nbsp;, ,&nbsp;Shanshan Liu*,&nbsp;, ,&nbsp;Yingchao Wang*,&nbsp;, ,&nbsp;Pedram Fatehi,&nbsp;, and ,&nbsp;Shengran Zhang*,&nbsp;","doi":"10.1021/acsapm.5c02895","DOIUrl":"https://doi.org/10.1021/acsapm.5c02895","url":null,"abstract":"<p >Traditional paper is sensitive to water due to the strong capillary action and abundance of hydrophilic hydroxyl groups in cellulose. Inspired by outstanding properties of lignin, i.e., hydrophobicity, UV-blocking, and thermal stability, lignin-filled hardwood paper (LHP) was produced for various advanced applications. To enhance the lignin retention on the cellulose fibers, we mechanically beat the fibers to different degrees. Results showed that intensive beating made the fibers more fibrous, which significantly increased the lignin retention on the fibers. Benefiting from these changes, more lignin interacted with cellulose fibers, resulting in an increase in the hydrophobicity of lignin-filled hardwood paper (water contact angle (WCA) increased from 42 to 109°). Meanwhile, the water vapor transmission rate (WVTR) of LHP-90 °SR was only half that of the control (786 g/m²·24 h), and its water absorption was as low as 49%. These data further confirmed the excellent hydrophobic properties of LHP-90 °SR, which was attributed to the phenylpropane units and aromatic groups in the lignin molecules. Due to the dense fiber network formed by intensive beating, the interaction between lignin and cellulose was strengthened by hydrogen bonding, thus leading to a remarkable improvement in the tensile strength of lignin-filled hardwood paper from 1 to 41.36 MPa. In addition, lignin filling not only made LHP-90 °SR effective in shielding UV rays but also endowed it with good thermal stability. This research revealed a viable approach to manufacture hydrophobic, thermostable, and UV-blocking paper with high strength for advanced food packaging applications.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 18","pages":"12857–12867"},"PeriodicalIF":4.7,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134726","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":"Highly Oriented CNTs Endowing PP Foam with High Electrical Conductivity and Excellent Electromagnetic Interference Shielding","authors":"Chenguang Yang*,&nbsp;, ,&nbsp;Yangkang Xu,&nbsp;, ,&nbsp;Haiyang Liu,&nbsp;, ,&nbsp;TaoTao Li,&nbsp;, ,&nbsp;Kun Yan,&nbsp;, ,&nbsp;Wenwen Wang,&nbsp;, and ,&nbsp;Dong Wang*,&nbsp;","doi":"10.1021/acsapm.5c02648","DOIUrl":"https://doi.org/10.1021/acsapm.5c02648","url":null,"abstract":"<p >Overcoming the challenge of low-conductivity polymeric foams at minimal filler loading requires innovative approaches. Herein, we present a strategy that leverages synergistic crystal structure regulation and heterogeneous nucleation to direct the alignment of the conductive medium for dramatically enhanced electrical conductivity. Polypropylene (PP) powder and carbon nanotubes (CNTs) are predispersed, followed by twin-screw blending extrusion to introduce azodicarbonamide (AC) foaming agent and nanopolytetrafluoroethylene (PTFE) particles. Lastly, hot-pressing foaming is performed to obtain the CNTs/PTFE/PP composite foam. The proposed approach enhances the foam microstructure by decreasing the cell size, increasing cell density, and aligning CNTs along the cell wall. Consequently, the conductivity increases from close to 0 to 71.6 S/cm. Moreover, the improved microstructure and extensive conductive network lead to enhanced electromagnetic interference shielding of 40.3 dB. The composite foam exhibits excellent thermoelectric and photothermal conversion performance, maintaining heating stability for 2400 s. The PTFE particles form fibrous structures during extrusion, which enhance the interfacial force and, thus, the mechanical strength. Overall, the proposed method, leveraging crystal size refinement and heterogeneous nucleation, yields composite foams characterized by enhanced conductivity, versatility, and excellent mechanical properties, with promising applications in aerospace, automotive interior shielding, and thermal management.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 18","pages":"12682–12694"},"PeriodicalIF":4.7,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134724","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":"Dual-Functional Electrochemically Synthesized Copolymers via Incorporating Bithiophene Units into 3,4-Ethylenedioxythiophene for Superior Thermoelectric and Charge Storage Performances","authors":"Vibha Saxena*,&nbsp;, ,&nbsp;Pritam Sarkar,&nbsp;, ,&nbsp;A. Singh,&nbsp;, and ,&nbsp;A. K. Sahu,&nbsp;","doi":"10.1021/acsapm.5c02132","DOIUrl":"https://doi.org/10.1021/acsapm.5c02132","url":null,"abstract":"<p >Free-standing or flexible substrate-supported poly(3,4-ethylenedioxythiophene) (PEDOT) films are much in demand due to their applications in various electronic, electrochromic, and thermoelectric devices. Prevalent methods of producing PEDOT free-standing films are from commercially available PEDOT:PSS, which has to be subjected to several pre- and post-treatments to tune the electrical and electrochemical properties. The present research focuses on developing dual-functional copolymer electrodes through the electrochemical polymerization of 2,2′-bithiophene (BTh) units with EDOT, aiming to enhance both thermoelectric properties and charge storage capabilities. By incorporating BTh units into the EDOT monomer, the copolymerization results in a significant change in morphological, structural, electrochemical, and electrical properties as well as improved stability, without any kind of pre- and post-treatments. This strategy serves dual purposes; it not only hinders polymer chains from forming coiled structures (and thus improves mobility) but also increases its electrochemical properties (and thereby charge storage capabilities). As a result of improved electrical and electrochemical properties, superior thermoelectric and capacitive properties are observed in copolymers compared to homopolymers. As-deposited copolymer films have approximately an order of magnitude enhancement in the mass specific capacitance (274 F/g) and thermoelectric power factor (11.5 μW/mK²) as compared to that of PEDOT films. The prepared films were free-standing and could be transferred onto solid substrates. The copolymerization method can be adopted as an alternative strategy to tune the electrical/electrochemical properties of polymers and opens a pathway to enable self-powered devices.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 18","pages":"12378–12389"},"PeriodicalIF":4.7,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134646","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":"Multichromatic Realization of Electrochromic Supercapacitors by Using TT-OMe/EDOT Copolymer Bifunctional Electrodes","authors":"Kejie Yin,&nbsp;, ,&nbsp;Zhixuan Yu,&nbsp;, ,&nbsp;Yijin Liu,&nbsp;, ,&nbsp;Sheng Li,&nbsp;, ,&nbsp;Haihong Guo,&nbsp;, ,&nbsp;Ding Zheng*,&nbsp;, and ,&nbsp;Junsheng Yu*,&nbsp;","doi":"10.1021/acsapm.5c02307","DOIUrl":"https://doi.org/10.1021/acsapm.5c02307","url":null,"abstract":"<p >Electrochromic supercapacitors (ECSs), which combine energy storage with real-time optical indication of charge states, have emerged as promising candidates for next-generation intelligent energy storage technologies amid mounting energy and environmental challenges. Among them, conventional conductive homopolymer such as 3,4-ethylenedioxythiophene (EDOT) for ECS suffers from limited electrochemical performance due to unstable microstructures. In this work, a series of poly(3,6-dimethoxythieno[3,2-<i>b</i>]thiophene-<i>co</i>-3,4-ethylenedioxythiophene) (P(TT-OMe-<i>co</i>-EDOT)) bifunctional electrodes were successfully fabricated via a one-step electrochemical copolymerization method. Tuning the TT-OMe/EDOT molar ratio enabled morphological optimization of the copolymer, in which EDOT incorporation induced a porous architecture that facilitated ion transport and enhanced electrochemical activity. As a result, the P(TT-OMe-<i>co</i>-EDOT) electrode delivered a high specific capacitance (218 F g^–1 at 5 mV s^–1) and enhanced stability (30.14% retention after 3000 cycles), along with tunable multicolor electrochromism. This study presents a facile in situ strategy for the fabrication of bifunctional electrode films, yielding materials that simultaneously exhibit enhanced electrochemical and electrochromic performance. These synergistic properties highlight their potential for integration into next-generation multifunctional energy storage systems.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 18","pages":"12459–12467"},"PeriodicalIF":4.7,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134740","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":"Sandcastle Worm-Inspired Polyelectrolyte Hydrogel as a Bioadhesive for Diverse Tissues","authors":"Jing Cong,&nbsp;, ,&nbsp;Xiaoming Liu,&nbsp;, ,&nbsp;Chengpan Li,&nbsp;, ,&nbsp;Lin Mei,&nbsp;, ,&nbsp;Shaoshan Pan,&nbsp;, ,&nbsp;Jie Tian,&nbsp;, ,&nbsp;Tianyu Xu,&nbsp;, ,&nbsp;Chunguang Miao,&nbsp;, ,&nbsp;Weiping Ding*,&nbsp;, and ,&nbsp;Tianzhi Luo*,&nbsp;","doi":"10.1021/acsapm.5c02092","DOIUrl":"https://doi.org/10.1021/acsapm.5c02092","url":null,"abstract":"<p >Bioadhesives have been widely applied in wound healing and hemostasis, as well as biointegrated devices. Most existing bioadhesives still lack fast adhesion formation, strong interfacial toughness, and outstanding compatibility in humidity environments. Here, we synthesized a polyampholyte hydrogel using oppositely charged acrylic acid and 2-(dimethylamino)ethyl methacrylate, inspired by the sandcastle worms. The anions and cations formed ionic bonds and endowed the hydrogel with outstanding mechanical properties, while the acrylic acids provided abundant carboxylic acid groups and created immediate physical cross-links with the wet tissue surface, allowing for fast and strong adhesion to various tissues and organs under physiological conditions. Moreover, the bioinspired hydrogels displayed outstanding <i>in vivo</i> and <i>in vitro</i> biocompatibility and degradability, significantly promoting wound healing and suppressing inflammation as a bioadhesive. The developed bioinspired polyelectrolyte hydrogel provides an avenue for wound care, as well as other potential medical applications.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 18","pages":"12321–12336"},"PeriodicalIF":4.7,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134738","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":"Electrochemical Switching of Metallopolymer-Functionalized Indium Tin Oxide Derived by Cu0-Mediated Atom Transfer Radical Polymerization","authors":"Jaeshin Kim,&nbsp;, ,&nbsp;Bizan N. Balzer,&nbsp;, ,&nbsp;Markus Gallei*,&nbsp;, and ,&nbsp;Suteera Witayakran*,&nbsp;","doi":"10.1021/acsapm.5c02861","DOIUrl":"https://doi.org/10.1021/acsapm.5c02861","url":null,"abstract":"<p >A redox-responsive polymer-modified indium tin oxide (ITO) was fabricated via a convenient filter paper-assisted Cu⁰-mediated surface-initiated atom transfer radical polymerization (FP-Cu⁰-SI-ATRP), enabling the formation of ferrocene-containing polymer brushes, poly(2-(methacryloyloxy)ethyl ferrocenecarboxylate) (PFcMA), with tunable thickness on ITO. By varying the monomer concentration, uniform polymer brushes with controllable thicknesses ranging from 10 to 122 nm were obtained. Compared to surface-initiated atom transfer radical polymerization (SI-ATRP), FP-Cu⁰-SI-ATRP achieved significantly higher polymerization rates, thicker films, and a shorter reaction time (5 h vs 20 h), while eliminating the need for subsequent metal catalyst removal. Characterization by Fourier Transform Infrared spectroscopy (FTIR), Ultraviolet–visible spectroscopy (UV–vis), atomic force microscopy (AFM), an ellipsometer, and water contact angle (WCA) measurements confirmed the successful grafting and systematic changes in PFcMA brush thickness and surface properties. Electrochemical performance, assessed by cyclic voltammetry (CV), revealed that thinner films exhibited efficient, diffusion-controlled redox behavior, whereas thicker films showed increased resistive effects. While the modified ITO prepared via SI-ATRP displayed lower redox activity despite having a similar thickness, this suggests a less favorable polymer brush morphology for charge transport. These findings establish FP-Cu⁰-SI-ATRP as a promising approach for constructing redox-active interfaces with tunable electrochemical properties for smart material applications.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 18","pages":"12831–12845"},"PeriodicalIF":4.7,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsapm.5c02861","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134739","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":"Exploring ICT-FRET in Aliphatic Electroactive Fluorescent Polymers and Fluorometric/Electrochemical/Impedimetric Sensing of Picric Acid in Aqueous and Organic Media","authors":"MD Hussain Sanfui,&nbsp;, ,&nbsp;Nadira Hassan,&nbsp;, ,&nbsp;Shrestha Roy,&nbsp;, ,&nbsp;Deepak Chowdhury,&nbsp;, ,&nbsp;Mostafizur Rahaman,&nbsp;, ,&nbsp;Mincheol Chang,&nbsp;, ,&nbsp;Narendra Nath Ghosh,&nbsp;, ,&nbsp;Pijush Kanti Chattopadhyay,&nbsp;, ,&nbsp;Dilip K. Maiti,&nbsp;, and ,&nbsp;Nayan Ranjan Singha*,&nbsp;","doi":"10.1021/acsapm.5c02542","DOIUrl":"https://doi.org/10.1021/acsapm.5c02542","url":null,"abstract":"<p >In this work, condensation polymer (CP) containing −NH₂, −CONH–, and pyrrolidinone functionalities is synthesized by Aza-Michael addition of itaconic acid/ethylene-diamine, intramolecular cyclization, and condensation polymerization. Subsequently, light-emitting aliphatic polymers (LEAPs) are synthesized using 2-acrylamido-2-methylpropane-1-sulfonic acid, <i>N,N</i>-dimethylacrylamide, and in situ generated tertiary amidic 2-(<i>N</i>-(3-(dimethylamino)-3-oxopropyl)acrylamido)-2-methylpropane-1-sulfonic acid monomers. In LEAP3, the optimum incorporation of −CONH–/–CON&lt; and −SO₃H heteroatomic subfluorophores (HASFs) is understood employing nuclear magnetic resonance and Fourier transform infrared spectroscopies. Thereafter, dual-state emissive aliphatic conducting polymers (DEACPs) having enhanced supramolecular interactions are synthesized, encapsulating CP in LEAP3. Among DEACPs, the optimal inclusions of HASFs/CP in the DEACP4 result in dual-state emission and significant conductivity, as indicated by density functional theory (DFT) calculations, spectroscopic analyses, fluorescence enhancements, and conductivities. In DEACP4, spectral overlap of CP (acceptor) absorption with LEAP3 (donor) emission and Lippert-Mataga/Mac-Rae/Weller’s/Rettig’s polarity plots indicate Förster resonance energy transfer and intramolecular charge transfer phenomena, respectively, as examined by the excitation-dependent emissions (EDEs)/time-correlated single photon count measurements, quantum yields, and DFT calculations. In DEACP4, solid-state fluorescence is indicated through the absorption spectrum, EDEs, and fluorescence microscopic images. The selective optoelectronic responses of DEACP4 toward picric acid (PA) are indicated through multimethod sensing in aqueous and organic media. In fluorometric, electrochemical, and impedimetric sensing of PA, limits of detection are measured to be 4.9701/3.7936, 3.5253/60.0403, and 49.4312/33.9121 nM in H₂O/DMSO, respectively. The impedance and current–voltage measurements reveal the conductive properties of DEACP4 (6.83 × 10^–5/4.21 × 10^–4 S cm^–1) and PA-DEACP4 (9.53 × 10^–5/5.12 × 10^–4 S cm^–1) in the solid-state/solution.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 18","pages":"12616–12633"},"PeriodicalIF":4.7,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134749","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":"Structure–Property Optimization in High-Barrier Polyglycolic Acid/Polyamide 6 Blends: Achieving Concurrent High Strength and Toughness","authors":"Xuemei Chu,&nbsp;, ,&nbsp;Yuan Gao,&nbsp;, ,&nbsp;Ming Wang,&nbsp;, ,&nbsp;Han Wu,&nbsp;, ,&nbsp;Bo Zhang,&nbsp;, ,&nbsp;Zhenbo Ning,&nbsp;, ,&nbsp;Zhihua Gan*,&nbsp;, and ,&nbsp;Ni Jiang*,&nbsp;","doi":"10.1021/acsapm.5c02576","DOIUrl":"https://doi.org/10.1021/acsapm.5c02576","url":null,"abstract":"<p >Poly(glycolic acid) (PGA), as a biocompatible polyester, is promising for packaging applications due to its excellent gas barrier properties. However, its mechanical brittleness limits its practical use. The blending modification of PGA with polyamide 6 (PA6) was investigated in this study, and the phase structure, rheological properties, thermal behavior, mechanical properties, barrier, and degradation properties of both binary and ternary blends were comprehensively evaluated. The results show that the incorporation of PA6 significantly enhanced the toughness of PGA while maintaining or even improving its tensile strength, overcoming the limitations of conventional PGA toughening methods. The introduction of a chain extender further enhanced the compatibility between PGA and PA6 phases, leading to further improved mechanical properties. Rheological analysis reveals an increased storage modulus and improved processability. Furthermore, the blends exhibit superior oxygen barrier properties compared with neat PGA and neat PA6, attributed to hydrogen bonding at the interface. These findings provide insights into designing hierarchically structured polymer blends for advanced packaging materials combining gas barrier efficacy, mechanical durability, and sustainable processability.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 18","pages":"12743–12751"},"PeriodicalIF":4.7,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134751","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}