ACS Applied Polymer Materials最新文献_第3页

Enhancing Stress Dispersion through Interfacial Strategy in Multidimensional Spacer Fabric Reinforced Polyurethane

IF 4.4 2区化学

ACS Applied Polymer Materials Pub Date : 2025-03-14 DOI: 10.1021/acsapm.5c0016910.1021/acsapm.5c00169

Lujie Wang, Li Xin, Xiaobing Wang, Zhao Ding, Yi Zhou*, Ying Lu, Maziar Ashuri, Hongxiang Chen and Yang Zhou*,

{"title":"Enhancing Stress Dispersion through Interfacial Strategy in Multidimensional Spacer Fabric Reinforced Polyurethane","authors":"Lujie Wang, Li Xin, Xiaobing Wang, Zhao Ding, Yi Zhou*, Ying Lu, Maziar Ashuri, Hongxiang Chen and Yang Zhou*, ","doi":"10.1021/acsapm.5c0016910.1021/acsapm.5c00169","DOIUrl":"https://doi.org/10.1021/acsapm.5c00169https://doi.org/10.1021/acsapm.5c00169","url":null,"abstract":"Multidimensional structure warp-knitted spacer fabrics (WKSFs) are integrated with polyurethane elastomers (PUEs) to fabricate shear-resistant reinforced composite materials, demonstrating a 58% enhancement in shear strength compared to pristine PUEs. We quantitatively evaluated the interface thickness and adhesion between WKSFs and PUEs to assess the influence of the physical and chemical properties of the interface on stress conduction and dispersion. The results demonstrate that the stress transfer efficiency and overall reinforcement are highly dependent on the interface quality and the mesh structure of the WKSFs. Finite-element analysis reveals a multidimensional stress dispersion mechanism within the structure, leading to a more effective stress distribution from a theoretical perspective. The findings provide insights into the stress dispersion in different directions of warp-knitted spacer fabric fibers and offer practical guidelines for designing advanced high-performance, energy absorbing, and shear-resistant materials for applications such as protective systems, structural reinforcement, and energy storage.","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 6","pages":"3504–3510 3504–3510"},"PeriodicalIF":4.4,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143713860","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

Enhanced Interfacial Interactions of a Flexible Electromagnetic Interference Shielding Nanocomposite Using a T-Shaped Conjugated Surfactant

IF 4.4 2区化学

ACS Applied Polymer Materials Pub Date : 2025-03-14 DOI: 10.1021/acsapm.4c0338510.1021/acsapm.4c03385

Oh Kyoung Kwon, Pyong Hwa Hong, Jong Yeop Kim, Youngju Kim, Min Jae Ko, Gyeong Rim Han, Jong Hyuk Park, Jea Woong Jo*, Jea Uk Lee* and Sung Woo Hong*,

{"title":"Enhanced Interfacial Interactions of a Flexible Electromagnetic Interference Shielding Nanocomposite Using a T-Shaped Conjugated Surfactant","authors":"Oh Kyoung Kwon, Pyong Hwa Hong, Jong Yeop Kim, Youngju Kim, Min Jae Ko, Gyeong Rim Han, Jong Hyuk Park, Jea Woong Jo*, Jea Uk Lee* and Sung Woo Hong*, ","doi":"10.1021/acsapm.4c0338510.1021/acsapm.4c03385","DOIUrl":"https://doi.org/10.1021/acsapm.4c03385https://doi.org/10.1021/acsapm.4c03385","url":null,"abstract":"In this study, we develop a highly flexible and lightweight electromagnetic interference shielding (EMIS) nanocomposite film based on electrochemically exfoliated graphenes (EEGs), employing a brick-and-mortar structure. A T-shaped conjugated surfactant is synthesized to effectively exfoliate and disperse the aggregated EEGs in the solvent and matrix. The resulting nanocomposite film exhibits well-aligned and tightly bound conductive multilayered nanostructures due to the synergetic interactions of its brick-and-mortar components. The EMIS film, with a thickness of approximately 100 μm, exhibits outstanding mechanical properties, including a tensile strength of 20.7 MPa and Young’s modulus of 1.15 GPa. Notably, it demonstrates exceptional folding reliability by withstanding over 100000 folding/unfolding cycles, which surpasses the performance of previously reported foldable EMIS films. In addition, the well-ordered conductive multilayers composed of the EEGs contribute to the excellent EMIS performance that exceeds 30 dB in the X-band frequency range, effectively blocking more than 99.9% of electromagnetic waves within this range. These results are ascribed to the well-developed supramolecular brick-and-mortar nanostructure, which originates from the synergistic effects of complex interfacial interactions, including π–π, ionic, and hydrogen-bonding interactions. This study also proposes a mechanism that explains the remarkable mechanical properties and significantly enhanced folding reliability of the developed EMIS film.","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 6","pages":"3522–3533 3522–3533"},"PeriodicalIF":4.4,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143714110","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

Enhanced Mechanical Performance of Silicone Rubber Using Silica-Cellulose Hybrid Nanofibers with Strong Polymer–Filler Interactions

IF 4.4 2区化学

ACS Applied Polymer Materials Pub Date : 2025-03-14 DOI: 10.1021/acsapm.4c0405910.1021/acsapm.4c04059

Haolan Gou, Wenyu Fang, Jialong Zhu, Hailong Wang, Yuanchuan Ma and Hong Fan*,

{"title":"Enhanced Mechanical Performance of Silicone Rubber Using Silica-Cellulose Hybrid Nanofibers with Strong Polymer–Filler Interactions","authors":"Haolan Gou, Wenyu Fang, Jialong Zhu, Hailong Wang, Yuanchuan Ma and Hong Fan*, ","doi":"10.1021/acsapm.4c0405910.1021/acsapm.4c04059","DOIUrl":"https://doi.org/10.1021/acsapm.4c04059https://doi.org/10.1021/acsapm.4c04059","url":null,"abstract":"It remains challenging to create rigid fiber networks in hydrophobic silicone rubber (SR) by using hydrophilic cellulose nanofibers (CNFs) with high interfacial compatibility for mechanical reinforcement through solvent-free processing. In this work, a silica-cellulose hybrid nanofiber (Me-SiO2/CNFs) was prepared via in situ polymerization of hydrophobic silica particles on the CNF surface using the sol–gel method, where CNFs served as a rigid template. The resulting Me-SiO2/CNFs exhibit a bead-like morphology and can be readily pulverized into the SR matrix, enabling the preparation of highly transparent nanocomposites through conventional mixing and vulcanization processes that eliminate freeze drying and mechanical grinding. With a large specific surface area (221 m2·g–1) and high aspect ratio, Me-SiO2/CNFs show strong polymer–filler interactions and form filler percolation networks. In particular, the polymer–filler interactions and energy dissipation capacity are enhanced by the entanglement of SR molecular chains with surface silica particles. Meanwhile, the internal CNF framework establishes a branched fiber network. These two synergistic mechanisms collectively improve the mechanical strength of SR nanocomposites. Notably, the tensile strength and tear strength of SR/CNF nanocomposites increased by 39.7% and 45.5%, respectively. Furthermore, the processability and synergistic reinforcement mechanisms were systematically investigated. This study provides valuable insights for implementing CNFs as a reinforcing filler in industrial applications of high-temperature vulcanized silicone rubber.","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 6","pages":"3752–3763 3752–3763"},"PeriodicalIF":4.4,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143714109","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

Constructing Fully Biobased Epoxy Vitrimer Based on Disulfide Bonds with Desired Mechanical, Recyclability, and Degradability Properties

IF 4.4 2区化学

ACS Applied Polymer Materials Pub Date : 2025-03-14 DOI: 10.1021/acsapm.5c0028910.1021/acsapm.5c00289

Shibiao Chai, Yixin Fang, Zhi Chen, Dehuan Kong, Shuangfei Xiang, Shujun Zhao*, Feiya Fu and Xiangdong Liu*,

{"title":"Constructing Fully Biobased Epoxy Vitrimer Based on Disulfide Bonds with Desired Mechanical, Recyclability, and Degradability Properties","authors":"Shibiao Chai, Yixin Fang, Zhi Chen, Dehuan Kong, Shuangfei Xiang, Shujun Zhao*, Feiya Fu and Xiangdong Liu*, ","doi":"10.1021/acsapm.5c0028910.1021/acsapm.5c00289","DOIUrl":"https://doi.org/10.1021/acsapm.5c00289https://doi.org/10.1021/acsapm.5c00289","url":null,"abstract":"The development of biobased epoxy vitrimer materials aligns with environmental sustainability. However, constructing fully biobased dynamic cross-linking networks that integrate mechanical, reprocessability, and degradability remains a significant challenge. In this work, a fully biobased epoxy vitrimer with a disulfide bond-decorated dynamic covalent network was developed using biomass-derived diphenolic acid and cystamine. Diphenolic acid underwent an amidation reaction with cystamine, followed by epoxidation to form an epoxy monomer, which was further cured with cystamine to obtain fully biobased epoxy vitrimers. The as-prepared epoxy vitrimers exhibited excellent mechanical properties and thermal stability, attributed to the high cross-linking density and topological interlocking structure induced by amidation. The dynamic cross-linking network endowed the epoxy vitrimers with good self-healing and reprocessability through disulfide bond exchange reactions, while the disulfide bonds could enable degradability when treated with dithiothreitol. When epoxy vitrimers were used as a matrix to form carbon fiber-reinforced composites, the obtained composites exhibited a tensile strength exceeding 613.53 MPa. The resin matrix could be completely degraded in 2.5 h without compromising the structure or properties of the carbon fibers. This work offers insights into the design of fully biobased epoxy vitrimers and their carbon fiber composites.","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 6","pages":"3981–3990 3981–3990"},"PeriodicalIF":4.4,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143714121","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

Miscibility and Hydrophobicity of Pyrrolidone-Containing Copolymers Determine Blend Membrane Properties for Diffusion Dialysis

IF 4.4 2区化学

ACS Applied Polymer Materials Pub Date : 2025-03-14 DOI: 10.1021/acsapm.5c0010810.1021/acsapm.5c00108

Yulu Zhang*, Danni Yang, Binsha Peng, Tao Luo*, Xiushan Yang, Lin Yang and Xinlong Wang,

{"title":"Miscibility and Hydrophobicity of Pyrrolidone-Containing Copolymers Determine Blend Membrane Properties for Diffusion Dialysis","authors":"Yulu Zhang*, Danni Yang, Binsha Peng, Tao Luo*, Xiushan Yang, Lin Yang and Xinlong Wang, ","doi":"10.1021/acsapm.5c0010810.1021/acsapm.5c00108","DOIUrl":"https://doi.org/10.1021/acsapm.5c00108https://doi.org/10.1021/acsapm.5c00108","url":null,"abstract":"Dense polymeric blends with (transiently) fixed positive charges are ideal as anion exchange membranes (AEMs) for treating acidic wastewater with salts via diffusion dialysis. Pyrrolidone from vinylpyrrolidone (VP) copolymers offers a unique chemistry compared to conventional quaternary ammonium, enabling greener and more efficient membrane synthesis. The hydrophobic/hydrophilic characteristics and the miscibility of copolymers with membrane materials determine the microstructure and consequent membrane properties. Here, a commercial copolymer, poly(vinylpyrrolidone-co-vinyl acetate) (P(VP-VAc)), was blended with membrane material polyether sulfone (PES) to prepare PES-P(VP-VAc) blend membranes. The influence of VP content in the copolymers, casting solution composition, and membrane microstructure on the physicochemical properties, mass transfer performance, and stability of the membranes was systematically investigated. It was found that the copolymers (63.8–73.2 wt % VP content, ∼80 kDa) were partially miscible with PES, resulting in microphase-separated membranes. With the VP mass fraction in the blend membranes increased, both the membrane mass increase and volume swelling degree in water and acid increased. When the membrane VP mass fraction reached 41.5 wt %, the permeability coefficients of sulfuric acid and ferrous sulfate increased rapidly. The PES-P(VP-VAc 6/4) blend membrane, containing 41.5 wt % VP, exhibited sulfuric acid and ferrous sulfate permeability coefficients of 228.5 and 4.1 × 10–9 m2/h, respectively. By simply blending two commercial polymers, this study successfully prepared PES-P(VP-VAc) blend AEMs with a microphase-separated structure, and their application in sulfuric acid recovery through diffusion dialysis was evaluated.","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 6","pages":"3872–3882 3872–3882"},"PeriodicalIF":4.4,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143713861","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

Biobased Antimicrobial Coatings: Layer-by-Layer Assemblies Based on Natural Polyphenols

IF 4.4 2区化学

ACS Applied Polymer Materials Pub Date : 2025-03-14 DOI: 10.1021/acsapm.4c0368110.1021/acsapm.4c03681

Pavel Vostrejs, Adriana Kovalcik*, Jana Bianca Schaubeder, Stefan Spirk, Michal Hricovini, Tiina Nypelö, Michal Kalina, Nicole Cernekova, Matej Brezina and Rupert Kargl,

{"title":"Biobased Antimicrobial Coatings: Layer-by-Layer Assemblies Based on Natural Polyphenols","authors":"Pavel Vostrejs, Adriana Kovalcik*, Jana Bianca Schaubeder, Stefan Spirk, Michal Hricovini, Tiina Nypelö, Michal Kalina, Nicole Cernekova, Matej Brezina and Rupert Kargl, ","doi":"10.1021/acsapm.4c0368110.1021/acsapm.4c03681","DOIUrl":"https://doi.org/10.1021/acsapm.4c03681https://doi.org/10.1021/acsapm.4c03681","url":null,"abstract":"Natural polyphenols possess inherent defensive properties against pathogens. This study investigated the radical scavenging and antimicrobial activity of biobased polyphenol nanoparticles (PNPs) derived from grape seeds. Scanning electron micrographs and dynamic light scattering confirmed the synthesized nanoparticles’ spherical shape, showing an average hydrodynamic radius of 93.9 ± 4.0 nm. The PNPs exhibited radical scavenging activity at about 433 mg Trolox per gram and a microbial inhibitory effect against Micrococcus luteus and Escherichia coli. The negatively charged PNPs were used to prepare thin multilayer films combined with positively charged polyelectrolytes such as poly(allylamine hydrochloride), poly-l-lysine, poly(diallyldimethylammonium chloride), or polyethylenimine. The viscoelastic properties of polyelectrolyte/PNP films were monitored using a quartz crystal microbalance with dissipation. The PNPs showed the best interface compatibility with poly-l-lysine (PLL), enabling the preparation of mechanically stable thin multilayer films. The antioxidant activity of PLL/PNP films was 72 ± 6 μg Trolox per cm2 at pH 10. The PLL/PNP films displayed antimicrobial activity against M. luteus and E. coli, with growth inhibition of 50.7 ± 0.6% and 12.1 ± 0.6%, respectively. The prepared biobased PLL/PNP Layer-by-Layer assemblies can potentially prevent biofilm formation on a large spectrum of materials.","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 6","pages":"3601–3610 3601–3610"},"PeriodicalIF":4.4,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsapm.4c03681","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143713862","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

Preparation of Citric Acid-Modified Cellulose Composites and Elucidation of Their Toughening Mechanism

IF 4.4 2区化学

ACS Applied Polymer Materials Pub Date : 2025-03-13 DOI: 10.1021/acsapm.4c0397110.1021/acsapm.4c03971

Yuta Joka, Kenji Yamaoka, Ryohei Ikura, Takeru Komyo, Chao Luo, Akihide Sugawara, Hiroshi Uyama*, Yasutomo Uetsuji* and Yoshinori Takashima*,

{"title":"Preparation of Citric Acid-Modified Cellulose Composites and Elucidation of Their Toughening Mechanism","authors":"Yuta Joka, Kenji Yamaoka, Ryohei Ikura, Takeru Komyo, Chao Luo, Akihide Sugawara, Hiroshi Uyama*, Yasutomo Uetsuji* and Yoshinori Takashima*, ","doi":"10.1021/acsapm.4c0397110.1021/acsapm.4c03971","DOIUrl":"https://doi.org/10.1021/acsapm.4c03971https://doi.org/10.1021/acsapm.4c03971","url":null,"abstract":"Cellulose is a plant-based and highly abundant biobased resource and widely used as a filler for polymer composite materials because cellulose fillers have a high aspect ratio and high crystal modulus. Introducing high contents of cellulose fillers into polymer composites reduces the use of petroleum-derived synthetic polymers, increases the mechanical strength, and decreases the toughness due to the aggregation of fillers. In this study, we introduced hydrogen bonds between the polymer matrix and cellulose fillers. Citric acid-modified cellulose (CAC) has many carboxyl groups and forms hydrogen bonds with polymers that have hydroxy groups. The interactions between the polymer matrix and the CAC fillers were evaluated by the glass transition temperature, Fourier transform infrared spectroscopy, and a simulation study based on first-principles calculations. Noncovalent interactions between the polymer matrix and CAC fillers improved the toughness of the CAC composites and enabled mechanical recycling at a high CAC content. This study contributes to the reduced use of petroleum-derived synthetic polymers and longer lifetimes of the materials.","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 6","pages":"3806–3814 3806–3814"},"PeriodicalIF":4.4,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143714052","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

Comparison and Optimization of Dual-Dynamic Covalent Bonds in Electrically Insulating Epoxy Vitrimer

IF 4.4 2区化学

ACS Applied Polymer Materials Pub Date : 2025-03-13 DOI: 10.1021/acsapm.4c0332510.1021/acsapm.4c03325

Yingfan Zhang, Zhengyong Huang*, Junping Lin and Jian Li,

{"title":"Comparison and Optimization of Dual-Dynamic Covalent Bonds in Electrically Insulating Epoxy Vitrimer","authors":"Yingfan Zhang, Zhengyong Huang*, Junping Lin and Jian Li, ","doi":"10.1021/acsapm.4c0332510.1021/acsapm.4c03325","DOIUrl":"https://doi.org/10.1021/acsapm.4c03325https://doi.org/10.1021/acsapm.4c03325","url":null,"abstract":"Epoxy polymers with irreversible cross-link networks are widely used in various fields due to their excellent mechanical, thermal, and electrical insulating performances yet also make them difficult to recycle. Although ester bonds in commonly dielectric insulating epoxy polymers can be activated under certain conditions to endow recyclability, the activation energy of ester bonds is high, and the reprocessability and stability are difficult to balance. The design of epoxy vitrimers with multiple dynamic bonds may achieve excellent recyclability while also possessing high mechanical strength and electrical insulating properties. Herein, epoxy vitrimers with different proportions of disulfide and ester bonds were developed, whose mechanical strength and dynamic thermomechanical and electrical properties were systematically investigated. Results showed that the DDA20 system exhibited excellent comprehensive properties, with a tensile strength of 76.35 MPa, a bending strength of 167 MPa, a glass transition temperature (Tg) of 139.6 °C, an activation energy Ea of 59.9 kJ/mol, a power–frequency (50 Hz) dielectric constant of 4.33 at 30 °C and 5.10 at 105 °C, and a breakdown strength of 31.64 kV/mm, respectively. The recovery rate in mechanical strengths of the DDA20 system reached above 80% at a pressure of 8 MPa, 180 °C for 2 h. This work promotes the application of epoxy vitrimers instead of traditional epoxy resin in electrical equipment.","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 6","pages":"3534–3543 3534–3543"},"PeriodicalIF":4.4,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143714081","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

Flexible Biobased Thermosets from Epoxidized Plant Oils: A Study of Aliphatic Cross-Linking Agents

IF 4.4 2区化学

ACS Applied Polymer Materials Pub Date : 2025-03-12 DOI: 10.1021/acsapm.4c0394410.1021/acsapm.4c03944

Jan Janesch*, Axel Solt-Rindler, Lara Dumschat, Oliver Vay, Alice Mija, Wolfgang Gindl-Altmutter, Thomas Rosenau, Wolfgang Raffeiner and Christian Hansmann,

{"title":"Flexible Biobased Thermosets from Epoxidized Plant Oils: A Study of Aliphatic Cross-Linking Agents","authors":"Jan Janesch*, Axel Solt-Rindler, Lara Dumschat, Oliver Vay, Alice Mija, Wolfgang Gindl-Altmutter, Thomas Rosenau, Wolfgang Raffeiner and Christian Hansmann, ","doi":"10.1021/acsapm.4c0394410.1021/acsapm.4c03944","DOIUrl":"https://doi.org/10.1021/acsapm.4c03944https://doi.org/10.1021/acsapm.4c03944","url":null,"abstract":"This study investigates the preparation of flexible biobased thermosets by cross-linking epoxidized linseed oil (ELO) with three different hardeners: hexamethylene diamine (HMDA), bis(hexamethylene)triamine (BHMT), and sebacic acid. In a comparative analysis of amine and carboxylic acid cross-linkers, the mechanical, thermal, and chemical properties of the resulting thermosets were evaluated using Fourier transform infrared (FT-IR) spectroscopy, differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), thermogravimetric analysis (TGA), and tensile testing. FT-IR spectroscopy revealed the formation of an amide network in samples cured by using amine hardeners. HMDA and BHMT provided superior mechanical properties, with tensile strengths of 3.7 MPa and 2.3 MPa, respectively, compared to 2.0 MPa for sebacic acid. Glass transition temperatures were also higher for HMDA (16.0 °C) and BHMT (12.4 °C) compared with sebacic acid (−1.4 °C). Moreover, TGA showed that samples cured using sebacic acid reached the point of fastest mass loss at lower temperatures (385 °C) than thermosets cured using amine hardeners (450–470 °C), indicating their improved thermal stability. However, HMDA samples exhibited a significant mass loss of up to 40% due to evaporation during curing. This study shows the potential of amine cross-linkers for enhancing performance and underscores the need for further research into optimizing curing conditions and cross-linking chemistry.","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 6","pages":"3686–3697 3686–3697"},"PeriodicalIF":4.4,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsapm.4c03944","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143713910","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

Light-Curable Methacrylated Konjac Glucomannan Microspheres for Subcutaneous Tissue Filling

IF 4.4 2区化学

ACS Applied Polymer Materials Pub Date : 2025-03-12 DOI: 10.1021/acsapm.4c0399210.1021/acsapm.4c03992

Han Wang, Wenning Zhang, Wenjie Chen, Qing Zhou, Qianqian Zhu, Cuicui Wu, Wenran Liu, Xi Luo and Shunqing Tang*,

{"title":"Light-Curable Methacrylated Konjac Glucomannan Microspheres for Subcutaneous Tissue Filling","authors":"Han Wang, Wenning Zhang, Wenjie Chen, Qing Zhou, Qianqian Zhu, Cuicui Wu, Wenran Liu, Xi Luo and Shunqing Tang*, ","doi":"10.1021/acsapm.4c0399210.1021/acsapm.4c03992","DOIUrl":"https://doi.org/10.1021/acsapm.4c03992https://doi.org/10.1021/acsapm.4c03992","url":null,"abstract":"Skin soft tissue injury represents a prevalent dermatological condition often associated with postsurgical complications such as tissue defects and depressions. In this study, we developed methacrylated konjac glucomannan (KGMMA) through the modification of konjac glucomannan (KGM) with methyl acrylate (MA). The resulting KGMMA was subsequently emulsified and photo-cross-linked to form microspheres for soft tissue augmentation. Optimal preparation conditions were achieved with a 1:3 ratio of liquid paraffin/corn oil in the oil phase and a stirring speed of 800 rpm, yielding KGMMA microspheres with uniform sizes ranging from 100 to 200 μm. These microspheres demonstrated exceptional biocompatibility and showed potential in promoting NIH-3T3 cell proliferation. In vitro experiments revealed that KGMMA microspheres exhibited significant immunostimulatory activity and effectively suppressed TNF-α expression in the M1-type RAW264.7 cells. In vivo studies demonstrated that the microspheres elicited a controlled immune response during the initial phase of subcutaneous implantation and maintained structural integrity without significant degradation over 28 days, suggesting their suitability as a long-term soft tissue filler. These findings collectively indicate that injectable photo-cross-linked KGMMA microspheres possess substantial potential as an effective biomaterial for soft tissue defect restoration.","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 6","pages":"3728–3738 3728–3738"},"PeriodicalIF":4.4,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143713923","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