Advances in Polymer Technology最新文献

{"title":"Innovative Double-Layer Fabrics of Polyimide/Wool: Air Cavity Design for Enhanced Protection and Comfort","authors":"Dongxiu Dai,&nbsp;Xiaojing Lv,&nbsp;Jisiyuan Qin,&nbsp;Yutian Wang,&nbsp;Muhang Cai,&nbsp;Chenchen Zhan,&nbsp;Dan Tao,&nbsp;Dan Hu,&nbsp;Juan Liu,&nbsp;Genyang Cao,&nbsp;Sakil Mahmud","doi":"10.1155/adv/3487760","DOIUrl":"https://doi.org/10.1155/adv/3487760","url":null,"abstract":"<p>Although air layers are known to improve thermal protection, the influence of engineered air-cavity volume in double-layer polyimide/wool fabrics on the combined flame-retardant, thermal-insulating, and comfort performance remains poorly understood. This study addresses this gap by systematically designing hexagonal air-cavity structures through the differential shrinkage of polyimide and wool fibers. Experimental characterization and finite element analysis demonstrated that optimizing cavity volume significantly improved multifunctional performance. The fabric with the largest air cavity exhibited a 30%–40% reduction in damage length, a 32.2% decrease in peak heat release rate (PHRR), and a 59.6% reduction in smoke production. Infrared thermography and thermal protection tests further showed a 13.0% improvement in insulation rate and a 15.8% increase in thermal protection performance (TPP). Air and moisture permeability were also enhanced, demonstrating improved wearer comfort without compromising protection. These findings establish the critical role of engineered air-cavity volume in balancing thermal insulation, flame retardancy, and comfort, providing a practical design strategy for advanced protective textile systems.</p>","PeriodicalId":7372,"journal":{"name":"Advances in Polymer Technology","volume":"2026 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/adv/3487760","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148942593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stimuli-Responsive Poly(Acrylic Acid)-b-PEG Methacrylate Copolymer Brushes Grafted Mesoporous Silica Nanoparticles as Dual Carriers for Doxorubicin and Cisplatin","authors":"Abdullah Alswieleh","doi":"10.1155/adv/7549192","DOIUrl":"https://doi.org/10.1155/adv/7549192","url":null,"abstract":"<p>Brush-grafted mesoporous silica nanoparticles (MSNPs) with a stimuli-responsive poly(acrylic acid)-block-poly(ethylene glycol) methyl ether methacrylate (PAA-b-PEGMEMA) copolymer were prepared as dual carriers of doxorubicin (DOX) and cisplatin (CP). Surface-initiated atom-transfer radical polymerization (SI-ATRP) was used to prepare the nanocarriers, thus making it possible to covalently graft PAA-b-PEGMEMA to the surface of the MSNPs. Moreover, transmission electron microscopy (TEM) and scanning electron microscopy (SEM) studies have shown that the particles are uniformly spherical with sizes going up from 80 nm for the original MSNPs to 110 nm after copolymer grafting, while Fourier transform infrared (FTIR) spectra have confirmed the successive functionalization. Brunauer–Emmett–Teller (BET) measurements confirmed the deposition of polymer brushes without the collapse of the framework, as can be seen from the gradual decrease of surface area from 628 to 417 m²/g, while an average pore size of about 1.1 nm was kept. Dynamic light scattering (DLS) showed that the swelling was pH-dependent since the hydrodynamic diameter changed from about 500 nm at pH 2 to roughly 700 nm at pH 8 for MSNPs(-NH₂)-PAA-b-PEGMEMA. Moreover, the zeta potential changed from + 35 mV at pH 2 to −10 mV at pH 10; thus, a reversible charge-switching phenomenon was inferred. The drug loading efficiencies were 2.17% for CP and 1.83% for DOX. The CP-loaded system showed a release of nearly 52.18% of the drug in saline, about 35.98% in phosphate-buffered saline (PBS), and roughly 16.72% in Milli-Q water after 24 h. On the other hand, DOX behaved as a pH-triggered release drug with cumulative releases of 37.54%, 25.93%, and 9.54% at pH 5.5, 6.5, and 7.4, respectively, after 24 h. These results demonstrate that the nanocarrier has dual pH- and ion-responsive properties, which allow it to be released selectively in the tumor microenvironment. The PAA-b-PEGMEMA-modified MSNPs that were synthesized constitute a robust, biocompatible, and stimuli-sensitive vehicle for the simultaneous delivery of chemotherapeutic drugs, thus providing controlled release, lowering systemic toxicity, and increasing the therapeutic potential of combination cancer therapy.</p>","PeriodicalId":7372,"journal":{"name":"Advances in Polymer Technology","volume":"2026 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/adv/7549192","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148942470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Swelling on Electrical Properties of Rubber Composites: Potential Materials for Liquid Detections","authors":"Bismark Mensah,&nbsp;Nimdie Kwabena Jackson,&nbsp;Kutu Precious Yao,&nbsp;David Sasu Konadu,&nbsp;Elijah Nyakudya,&nbsp;Tsatsu Nukunya","doi":"10.1155/adv/7040976","DOIUrl":"https://doi.org/10.1155/adv/7040976","url":null,"abstract":"<p>Rubber matrix was controlled to be hydrophilic, swellable, and conductive, by mixing with varied amounts of epichlorohydrin rubber (GECO), polyethylene oxide (PEO), and ethylene–vinyl acetate (EVA) polymers, et cetera. Higher concentration of the epichlorohydrin rubber (GECO) resulted in higher curing times (<i>t</i>_s2 and <i>t</i>₉₀), high torque values (<i>M</i>_<i>L</i>, <i>M</i>_<i>H</i>, and ∆<i>M</i>), high crosslinking density, and higher stiffness (MPa). Sample GP1 recorded highest strength due to the high content (70 part per hundred of rubber [phr]) of the epichlorohydrin rubber (GECO). All the compositions exhibited wetting and hydrophilic behavior, with contact angle &lt; 80°, upon submerging into petrol, diesel, kerosene, cooking oil, and water, respectively. The swollen composites resulted in volume increase, and dramatic drop in the electrical resistances. Based on volume strain (∆<i>V</i>/<i>V</i>_o), the gauge factor (GF = [∆<i>R</i>/<i>R</i>_o/(<i>V</i>/<i>V</i>_o]) deduced for the compounds was within approximately 1.3 × 10³–9.6 x 10³, which is the first to be reported for liquids (petrol, diesel, kerosene, cooking oil, and water), to the best of our knowledge. These GF values were higher and comparable to many other strain gauges made of rubber-reinforced/coated with graphene, and carbon nanotubes (CNTs), et cetera. Thus, the current compositions exhibit multifunctional capabilities for liquid/chemical sensing, soft robotics, agro-mulching, and real-time soil moisture monitoring applications.</p>","PeriodicalId":7372,"journal":{"name":"Advances in Polymer Technology","volume":"2026 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/adv/7040976","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148848897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Oxo-Nitrogenated Dinuclear Co(II) Catalyst for Polymerization of Methyl Methacrylate","authors":"Homa Parsaiyan,&nbsp;Gholam Hossein Zohuri,&nbsp;Mostafa Khoshsefat,&nbsp;Navid Ramezanian","doi":"10.1155/adv/7837370","DOIUrl":"https://doi.org/10.1155/adv/7837370","url":null,"abstract":"<p>Due to the fascinating behavior of the late-transition-metal (LTM) catalysts for co-/homo-polymerization of olefins, especially polar monomers, they have consistently attracted researchers’ attention. Synergistic effects between the active metal centers have further augmented this interest. Among these structures, oxo-nitrogenated cobalt (II) catalysts are widely used for the polymerization of dienes. Herein, we report the synthesis of an oxo-nitrogenated dinuclear Co(II) catalyst, which was carefully characterized using 1H NMR, Fourier transform infrared (FT-IR), energy dispersive X-ray (EDX), mass, atomic force microscopy (AFM), and scanning electron microscopy (SEM). The catalyst was tested for the polymerization of methyl methacrylate (MMA), a widely used monomer for producing polymethyl methacrylate (PMMA), a transparent thermoplastic with high chemical and thermal stability used in coatings, optics, and biomedical applications, in the presence of a modified methylaluminoxane (MMAO), the cocatalyst. The highest activity was obtained at an [Al]/[Co] molar ratio of 1000:1, <i>T</i>_<i>p</i> = 40°C, and <i>t</i>_<i>p</i> = 2 h, giving 66.9 g PMMA/mmol Cat h. Interestingly, the morphology of the given sample particles was spherical under specific conditions. The microstructure study of the PMMA made by the catalyst showed syndiotactic at 57.3%, atactic at 29.5%, and isotactic at 13.1%, respectively. In addition, the microstructural analyses of PMMA exhibited branching densities in the range of 221–330/1000C, a narrow PDI of 1.93, and a molecular weight of <span></span><math></math> = 1.180 × 10⁵ g/mol for the given samples. Although no evidence of a cooperative effect was observed in terms of selectivity, the reasonable activity of the catalyst may suggest the presence of such an effect.</p>","PeriodicalId":7372,"journal":{"name":"Advances in Polymer Technology","volume":"2026 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/adv/7837370","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148848552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Effect of Lignin and Deep Eutectic Solvent (Propionic Acid/Urea) on Carboxymethylcellulose/Pectin Films for Potential Food Packaging Applications","authors":"Ndidiamaka L. Oseafiana,&nbsp;Alison J. Scott,&nbsp;John P. Frampton,&nbsp;Marianne Su-Ling Brooks","doi":"10.1155/adv/5917068","DOIUrl":"https://doi.org/10.1155/adv/5917068","url":null,"abstract":"<p>The on-going environmental burden of petroleum-based plastics has led to increased research into sustainable and biodegradable alternatives for food packaging film applications. Lignin is an abundant byproduct of the paper and pulping industry and a promising reinforcement material for biopolymer films. This is due to its rigid, hydrophobic and antioxidant-rich structure which has been associated with enhanced mechanical film properties and thermal stability; however, its poor solubility in water is an issue. This study explores, for the first time, the incorporation of kraft lignin into a renewable biocomposite film of pectin and carboxymethylcellulose (CMC) by incorporating lignin into a deep eutectic solvent (DES) consisting of propionic acid (PA) and urea (U) (2:1 molar ratio) to enhance its dispersion within the polymer matrix. Three sets of films were prepared and analyzed for tensile strength, elongation at break, water vapor permeability (WVP), film composition, surface morphology, and thermal properties. The first set of films compared CMC/pectin with varying amounts of DES. The second set of films used a mixture design of experiments (DoEs) to explore varying film compositions with CMC, pectin, and lignin as variables with a fixed DES loading. The third set of films evaluated one promising composite film formulation in detail by comparing it to similar formulations without lignin or lignin/DES. The formulation exhibiting the most favorable combination of physicochemical properties within the studied range consisted of 1.5 g DES and a combined biopolymer loading of 2 g (with a CMC/pectin/lignin loading ratio of 1.213 g/0.737 g/0.05 g) in 100 mL water. In general, the DES acted as a plasticizer while lignin exhibited a plasticizing effect at low loadings. This research aligns with circular economy principles as it utilizes biomolecules that can be derived from waste materials. It presents a promising low-cost approach for incorporating lignin into biopolymer films, with potential for future application in food packaging.</p>","PeriodicalId":7372,"journal":{"name":"Advances in Polymer Technology","volume":"2026 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/adv/5917068","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148784761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced Wound Healing Through Antioxidant-Functionalized Biopolymer Sponges: A Study of Astaxanthin, Tannic Acid, and Quercetin in Chitosan/Alginate Composites","authors":"Sepideh Rajati,&nbsp;Yasaman Heidarian Loloei,&nbsp;Najme Gord Noshahri,&nbsp;Parirokh Lavaeei,&nbsp;Alireza Sadeghi-Avalshahr","doi":"10.1155/adv/7599786","DOIUrl":"https://doi.org/10.1155/adv/7599786","url":null,"abstract":"<p>Chronic nonhealing wounds are challenging due to persistent infections and oxidative stress. Biopolymer-based dressings, particularly those based on chitosan (CS) and alginate (Alg), are favored for their biocompatibility, biodegradability, and moisture retention. In this study, we developed lyophilized CS/Alg composite sponges and functionalized them with natural antioxidants—astaxanthin (ASX), tannic acid (TA), and quercetin (Que)—to create multifunctional wound dressings. The antioxidant-containing matrices were systematically characterized for their physicochemical properties and biological activities, including microstructure (SEM), swelling capacity, degradation profile, free-radical scavenging ability, antibacterial efficacy, cytocompatibility, and cell migration. SEM analysis revealed interconnected pores with smooth walls, facilitating fluid absorption and mechanical stability. The sponges demonstrated high swelling ratios (&gt;9200% fluid absorption in 24 h) and controlled degradation (~35% mass loss in 24 h and ~58% remaining up to day 7). The incorporation of antioxidants significantly enhanced free-radical scavenging, with the TA-modified samples exhibiting the highest activity (94%–96% inhibition in the DPPH and ABTS assays). Antibacterial assays confirmed the robust activity of TA and ASX against <i>Staphylococcus aureus</i> and <i>Escherichia coli</i> (log reduction values ≥ 3). Cytocompatibility and migration studies indicated excellent cell viability (&gt;90%) and increased proliferation, particularly in TA-containing samples. Consequently, our findings underscore the potential of CS/Alg antioxidant composites as promising bioactive wound dressings with synergistic antioxidant, antimicrobial, and regenerative properties.</p>","PeriodicalId":7372,"journal":{"name":"Advances in Polymer Technology","volume":"2026 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/adv/7599786","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148784762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Identifying the Critical BaTiO3 Loading in Electrospun PVDF Nanofibers for Balanced High-Performance Flexible Piezoelectric Sensors","authors":"Zahra Dehghani Dalacheh,&nbsp;Mostafa Jamshidi Avanaki","doi":"10.1155/adv/1109296","DOIUrl":"https://doi.org/10.1155/adv/1109296","url":null,"abstract":"<p>In this study, a systematic investigation was conducted to identify the critical BaTiO₃ (BT) loading in electrospun poly(vinylidene fluoride) (PVDF) nanofibers under controlled processing conditions for developing high-performance wearable piezoelectric sensors. Composite nanofiber mats with loadings of 0, 5, 10, and 15 wt% BT were fabricated and comprehensively characterized using field-emission scanning electron microscopy (FE-SEM), Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and tensile testing. The piezoelectric performance of the sensors was evaluated by measuring the output voltage under applied calibrated mechanical forces. Results indicated that the sample containing 10 wt% BT offered the best balance between structural integrity and electromechanical performance. This sample maintained uniform morphology and prevented defect formation, such as beading, while significantly increasing the β-phase content to 86.62% and the degree of crystallinity to 49.67%. Furthermore, tensile strength and elongation at break improved by 68% and 65%, respectively, compared to neat PVDF. In terms of sensing performance, this identified composition achieved a peak sensitivity of 1.420 V/N (a 40% increase) with a high correlation coefficient (<i>R</i>² = 0.9959) across the tested force range, indicating a stable linear response and high reliability for pressure-sensing applications. The findings demonstrate that a 10 wt% BT loading creates a balanced formulation by maximizing synergistic effects of β-phase formation and mechanical reinforcement of the PVDF matrix, while preventing nanoparticle agglomeration. The resulting nanocomposite provides a simultaneous combination of high sensitivity, broad linear response, and suitable mechanical flexibility for wearable sensors.</p>","PeriodicalId":7372,"journal":{"name":"Advances in Polymer Technology","volume":"2026 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/adv/1109296","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148753218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrothermal Preparation of Ceria Nanoparticles and Their Effect on Rubber Aging Properties","authors":"Jing Chen,&nbsp;Cunsi Fan,&nbsp;Liyuan Si,&nbsp;Xichen Yang,&nbsp;Jianye Bo,&nbsp;Yujie Chen,&nbsp;Hezhou Liu","doi":"10.1155/adv/3292995","DOIUrl":"https://doi.org/10.1155/adv/3292995","url":null,"abstract":"<p>Rubber products are widely used in various fields because of its excellent elasticity, but aging will seriously affect the performance of rubber parts, reduce economic benefits, and bring safety hazards. Many traditional organic antioxidants in rubber industry have biotoxicity, thus developing new antioxidants is urgent. Cerium dioxide containing rare earth elements shows unique advantages in improving the resistance of rubber to thermal oxidation and ultraviolet aging due to cerium’s strong ability to store and release oxygen, as well as its ability to combine with free radicals and its ability to absorb ultraviolet light. In this work, cerium dioxide nanoparticles with uniform size, homogeneous dispersion, and regular morphology were prepared by hydrothermal method and added into rubber as reinforcing filler to obtain butyl rubber/cerium dioxide nanoparticles (butyl rubber/CeO₂ NPs) composites. Compared to pure butyl rubber, the thermal stability, and damping properties of butyl rubber/CeO₂ NPs composites were improved, and the composites showed an increase in tensile strength of 13.4% and 12.5% and elongation at break retention of 10.3% and 2.2% after thermo-oxidative and UV aging, respectively. These results confirm that nano-CeO₂ significantly improves thermal-oxidative and UV aging resistance, showing great potential as a new eco-friendly antioxidant for the rubber industry.</p>","PeriodicalId":7372,"journal":{"name":"Advances in Polymer Technology","volume":"2026 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/adv/3292995","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148616374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Twin-Screw Extrusion of PHA-Based Compounds for Injection Molding: Influence of Talc on Thermal Properties and Processability","authors":"Annalisa Genovesi,&nbsp;Massimiliano Barletta","doi":"10.1155/adv/3162195","DOIUrl":"https://doi.org/10.1155/adv/3162195","url":null,"abstract":"<p>The food packaging sector widely employs injection-molded items, which are often used only once before disposal. The use of polyhydroxyalkanoates (PHAs) to fabricate these items may represent an effective solution to reduce the amount of plastic waste, but it is currently limited by their high cost, narrow processing window, and poor thermal properties. Three different blends of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBH), amorphous poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P3HB4HB), and talc were produced via compounding and injection molding. The inclusion of an amorphous PHA in the blend improves the mechanical properties but leads to a drastic worsening of the processability via injection molding at 30 wt.%. Rheological, mechanical, and thermal characterizations of the blends were performed, along with Fourier transform infrared (FTIR) and XRD analyses. Talc serves as a multifunctional agent, improving compatibility, enhancing rigidity and thermal resistance, and reducing costs. Its primary advantage is the increase in heat deflection temperature (HDT), which can reach up to 95.7°C with the addition of 10 wt.% talc. The elastic modulus of the compound with talc nearly doubles compared to the unfilled version, reaching ~835 MPa. The MFR of the compounds remained in the range 8.8–11 g/10 min after compounding. This study underscores the potential of PHAs as materials for producing injection-molded single-use items in the food packaging sector, where biodegradability and high thermal resistance are essential.</p>","PeriodicalId":7372,"journal":{"name":"Advances in Polymer Technology","volume":"2026 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/adv/3162195","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148616349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication-Dependent Enzymatic Degradation of Poly(Lactic Acid) Microplastics","authors":"Giorgia Ferrari,&nbsp;Christina N. Economou,&nbsp;Sergio Marras,&nbsp;Stefania Sganga,&nbsp;Athanassia Athanassiou,&nbsp;Despina Fragouli","doi":"10.1155/adv/1672019","DOIUrl":"https://doi.org/10.1155/adv/1672019","url":null,"abstract":"<p>While microplastics (MPs) derived from most petroleum-based plastics persist in the environment, their counterparts made of bioplastics such as poly(lactic acid) (PLA) offer the potential for biodegradation. However, their actual environmental fate is not solely dictated by degradation conditions, but it is also critically influenced by their processing and fabrication history, which governs their physicochemical properties. This study specifically investigates how the fabrication method of PLA MPs controls their enzymatic degradation. MPs produced through different manufacturing protocols were subjected to degradation by a commercial lipase enzyme from <i>Aspergillus oryzae</i>. After 28 days of enzymatic hydrolysis at pH 8.0, noticeable changes in the surface morphology of MPs were observed due to the emergence of pores ranging from hundreds of nanometers to less than two micrometers. Detailed characterizations reveal that the MPs’ fabrication pathway is a key determinant of degradation performance. Despite comparable particle size, MPs produced via different methods exhibited distinct degradation responses, as evidenced by variations in carbonyl index (CI, up to 12.0%) and crystallinity (up to c.a. 43.0%) and a decrease of the polymer’s molecular weight of up to c.a. 17.5% depending on the sample type. This study confirms the capability of the lipase enzyme to degrade PLA and underscores that the degradation performance is governed by the formation process of the polymeric particles. This highlights a critical and often overlooked aspect in MP and nanoplastic (NP) research: particles with identical chemical composition but different formation histories can exhibit markedly different biodegradation behaviors. Therefore, careful consideration of the fabrication route is essential for the accurate interpretation and comparison of biodegradation studies.</p>","PeriodicalId":7372,"journal":{"name":"Advances in Polymer Technology","volume":"2026 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/adv/1672019","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148615970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}