JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Zhilong Wang,Lei Wang,Yueyun Yang,Xin Zhou,Yunpu Li,Tong Wang,Xinying Liu,Yan Zheng,Zengjie Fan
Derived from non-renewable petroleum resources, conventional plastics are ubiquitous synthetic polymers that have provided immense societal convenience. However, their resistance to degradation has led to a global environmental crisis, with persistent waste accumulating in terrestrial and marine ecosystems and microplastics infiltrating the food chain. This urgent challenge necessitates the development of sustainable and biodegradable alternatives. A major obstacle is that most currently available bioplastics lack the mechanical robustness and optical transparency required for widespread practical applications. In this work, we present a straightforward and efficient method for fabricating high-performance bioplastic films from alginate, a natural polysaccharide extracted from brown algae. Our process involves dissolving sodium alginate (SA) to form a homogeneous solution, casting it into a film, and subsequently crosslinking it with calcium ions (Ca 2+ ). Under the dry testing conditions used in this study, the resulting calcium alginate (CA) films exhibited a maximum tensile strength of 239.7 MPa and a visible-light transmittance of approximately 84%–85% at 550 nm. In addition, the material exhibited excellent biocompatibility and underwent substantial degradation under the environmental conditions examined. These findings demonstrate the potential of CA films as transparent, mechanically robust, and sustainable bioplastic materials, offering a promising alternative to conventional petroleum-derived plastics.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Xiaofei Yan,Ye Liu,Jie Fang,Zhiqin Jin,Jianghua Wu,Hua Shen
Regenerated silk fibroin (RSF) fibers have garnered significant attention due to their remarkable biocompatibility and tunable biodegradability. However, their relatively poor mechanical performance limits their broader applications. Herein, we propose a simple and scalable one-step wet spinning approach to fabricate high-performance RSF composite fibers by incorporating two-dimensional Ti 3 C 2 T x MXene nanosheets and Ca 2+ ions. The synergistic reinforcement of Ca 2+ -induced and MXene-assisted β-sheet formation significantly enhanced the structural integrity and mechanical properties of the RSF fibers. The resulting composite fibers exhibited a high tensile strength (~234.1 MPa), improved thermal stability (MAXDTG ~ −2.1%/min), and increased glass transition temperatures (~179.0°C). In addition, both the microscopic morphology and the mechanical properties showed that the mechanical properties of the composite fiber are further enhanced after 2× stretching.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Xiaoxiao Ma,Yixue Chang,Jiyuan Zhu,Wei Zhang,Yu Chen
With the expanding use of polyurethane materials under complex service conditions, mechanical damage and the associated degradation in performance have become increasingly critical issues. Introducing intrinsic self-healing can extend service life and reduce material consumption, yet simultaneously maintaining high mechanical performance and efficient healing remains challenging. In this work, a series of intrinsically self-healing polyurethanes were constructed by incorporating dynamic disulfide bonds into the polymer network, and the effects of multiple structural parameters on the comprehensive performance were systematically investigated. By regulating the soft segment type, soft segment molecular weight, chain extender structure, and chain extender content, the mechanical properties, self-healing behavior, and thermal properties were evaluated. The results indicate that different structural parameters cooperatively govern material performance by modulating network structure, chain mobility, and hydrogen-bonding interactions. In particular, the soft segment type and molecular weight significantly influence self-healing behavior and thermal characteristics through their effects on chain mobility and phase structure, whereas the chain extender structure and chain extender content primarily determine network rigidity and mechanical performance. From the perspective of multiparameter structural regulation, this study elucidates the structure–property relationships of dynamic disulfide bond–based polyurethane systems, providing research guidance for the rational design and performance optimization of self-healing polyurethanes.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Xiangyu Li,Haiyang Gong,Jinyan Wang,Junyang Li,Yunxue Liu,Yunwu Yu,Ning Tang,Yaxin Gu,Lihua Wang,Peng Liu
Aerogels, as archetypal ultralight porous materials, exhibit great potential in thermal insulation and functional materials owing to their extremely low thermal conductivity and high specific surface area. However, conventional silica aerogels (SA) suffer from structural brittleness due to the rigid inorganic skeleton, limiting their use in flexible or deformation-prone environments. To address this issue, we propose a cooperative enhancement strategy using cellulose nanofibers (CNF) and waterborne polyurethane (WPU) to construct a composite silica aerogel. This approach forms a “rigid–flexible complementary” three-dimensional network, where CNF provides flexible support and WPU enhances interfacial adhesion and energy dissipation. Compared with conventional polymer-reinforced aerogels, this strategy improves organic–inorganic interfacial interactions at the nanoscale, leading to enhanced mechanical robustness and stress transfer efficiency. The resulting composite aerogel achieves a low thermal conductivity of 0.02555 W·m −1 ·K −1 , a high compressive strength of 221.7 kPa, stable fatigue resistance over 200 cycles, and a fast strain response time of 43 ms. This study offers a novel design paradigm for high-toughness thermal insulation aerogels and lays a material foundation for their practical applications in flexible insulation and high-temperature sensing fields.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Zumin Xie,Gaobo Lou,Fanfeng Ma,Yifan Chen,Xingguo Cheng,Wending Tao,Jing Han,Qian Li,Qiang Wu
With increasing environmental awareness, developing renewable and biodegradable bio-based greases is a research priority. Herein, phosphorylated cellulose nanofibrils (PCNF) were selected as a bio-based thickener due to their renewability, excellent network-forming ability, and improved interfacial properties. However, the inherent hydrophilicity of PCNF limits its compatibility with non-polar vegetable oils. To overcome this, methyltrimethoxysilane (MTMS) was used for hydrophobic modification of PCNF, and fully bio-based greases were fabricated by combining modified PCNF (M-PCNF) with castor oil. The effects of MTMS silanization degree and M-PCNF content on the microstructure, physicochemical properties, rheology, and tribology of the greases were systematically investigated. Results show that increasing silanization degree enhances penetration, oil separation, and mechanical stability but reduces viscosity and structural strength. Increasing M-PCNF content improves thickening capacity, viscosity, structural strength, and rebuild rate. Notably, the friction coefficient of M-PCNF-based greases stabilizes at 0.04–0.06, lower than that of commercial lithium grease, demonstrating excellent friction-reducing stability. This work provides a feasible strategy for high-performance bio-based greases and offers insights into structure–property relationships relevant to cellulose-based thickener design for green lubrication.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·Vol. 143
·期 34
·e70966
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IF 3.1
Qi Qianqian,Zhu Fuhao,Zhang Mingyu,Wang Qingguo
The degradation behavior of poly(lactic-co-glycolic acid) (PLGA) under natural seawater conditions has been less systematically described than that in buffered laboratory media. In this study, PLGA copolymers with different lactic acid/glycolic acid (LA/GA) ratios were prepared at two molecular-weight levels and immersed in natural seawater. Water uptake, mass retention, molecular weight changes, glass transition temperature ( T g ) changes, and surface morphology were analyzed. PLGA-9010 exhibited limited hydration, modest T g variation, and relatively slow molecular-weight reduction, whereas PLGA-5050 showed pronounced T g depression toward seawater temperature accompanied by accelerated molecular-weight decay and earlier surface disruption. PLGA-7030 displayed intermediate behavior. Within the investigated molecular weight range, lower molecular weight samples showed slightly faster decreases in molecular weight and T g during the early stage of immersion; however, the relative degradation behavior among different PLGA compositions remained unchanged. These results provide comparative information on the degradation behavior of PLGA copolymers with different compositions and molecular weights under natural seawater conditions.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2026
·
IF 3.1
Zhilong Zhu,Hongxiang Ou,Honglai Xue,Fang Zhu
To enhance the oil–water separation performance and stability of melamine sponge (MS), stearic acid-grafted attapulgite (SA-g-OATP) was synthesized via silanization and amidation grafting. The hydrophobic sponge (MS-POS) was fabricated by dip-coating MS in a polydimethylsiloxane (PDMS) solution containing SA-g-OATP. Characterization confirmed a grafting rate of 20.73%. The synergy between SA-g-OATP and PDMS constructed a hierarchical “micron skeleton-nanoparticle” rough structure. The optimal sample, MS-POS1-1, exhibited superhydrophobicity with a water contact angle of 159.34° and achieved high adsorption capacities for oils and solvents, reaching 112.33 g/g for palm oil. In gravity-driven tests, it showed separation efficiencies above 98.34% for oil–water mixtures and effectively separated water-in-oil emulsions. The sponge demonstrated robust stability, retaining hydrophobicity after 40 cycles of tape-peeling or sandpaper abrasion, and withstanding prolonged immersion in pH 2–12 solutions. The adsorption capacity remained above 89.70% after 20 consecutive adsorption-extrusion cycles. Developed from low-cost materials via a simple process, MS-POS exhibits high adsorption capacity, excellent selectivity, and robust stability, showing significant potential for oily wastewater remediation.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Xingyu Liu,Chan Dong,Jingang Zhang,Jingxia Qian,Jean-Marie Basset,Dongping Sun,Lu Zhou
A fluorine-free hydrophilic coating was fabricated on polytetrafluoroethylene (PTFE) membranes using sodium dodecylbenzenesulfonate (SDBS), nano-silica (SiO 2 ), and ethylene-vinyl alcohol copolymer (EVOH) through a simple immersion–drying process. The modification aimed to improve membrane wettability, permeability, and chemical stability. FTIR, XPS, SEM, and AFM analyses confirmed the formation of a uniform organic–inorganic composite coating. AFM further showed that the characteristic granular morphology and surface roughness changed little after immersion in acidic, alkaline, and oxidative solutions, indicating good nanoscale structural stability under harsh conditions. At the optimal composition (SDBS:SiO 2 :EVOH = 2:1:1), the water contact angle decreased from 124.8° for pristine PTFE to 60.6°, while the pure water flux reached 3727.99 L m −2 h −1 . The modified membrane also exhibited high flux recovery after bovine serum albumin fouling, with a flux recovery ratio of 92.3%. In oil–water separation tests, the membrane achieved separation efficiencies above 98% and maintained stable performance during three consecutive filtration cycles. In addition, stable wettability and permeation performance were retained after 1-week immersion in solutions ranging from pH 1–14. The results indicate that the EVOH-stabilized SiO 2 /SDBS coating provides an effective, PFAS-free, and scalable strategy for preparing durable hydrophilic PTFE membranes under harsh operating conditions.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Hongtao Li,Zhenyin Guo,Kang Zhu,Chen Peng,Changfa Xiao,Xianru He
Water-absorbing, swellable rubber is characterized by its ease of encapsulation and its ability to provide in situ watertight sealing and is widely used in applications such as the sealing of underground pipelines. To enhance the water-absorption properties of water-absorbing, swellable rubber, large quantities of water-absorbing resins or inorganic particles are typically incorporated. However, due to poor compatibility between these two components, the material exhibits low mechanical strength and struggles to meet application requirements. In this study, polyvinyl alcohol (PVA-1788) was employed as the water-absorbing component. As it contains the same vinyl acetate (VA) structural unit as ethylene-vinyl acetate rubber (EVM), this enables co-crosslinking of the composite rubber, thereby improving compatibility between the two components and enhancing the mechanical and water-absorption properties of the composite material. The structural morphology, water absorption, and mechanical properties of the composite were investigated using SEM, AFM, and laser scanning confocal microscopy. The results indicate that when the PVA content reached 22.5 phr, the tensile strength and elongation at break of the composite were 13 MPa and 246% respectively, representing a 10-fold and 0.9-fold increase compared to EVM rubber. This composite holds broad application prospects in fields such as the sealing of underground pipelines.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Chunjin Ai,Weigang Zhang,Yucheng Pan
Self-powered flexible piezoelectric devices based on polyvinylidene fluoride (PVDF) face a critical trade-off between piezoelectric output and mechanical flexibility. In this study, an amine-terminated liquid butadiene rubber (ATPB) toughened PVDF/BaTiO 3 (BTO) flexible nanofiber membrane is fabricated via electrospinning to achieve an optimized balance between piezoelectric output and mechanical durability. The ATPB coating serves as a low-modulus elastomeric interphase on BTO nanoparticles, mitigating the modulus mismatch and suppressing interfacial stress concentration while maintaining high ductility, with elongation at break exceeding 33%. Through the combined effects of chemical hydrogen bonding from ATPB and heterogeneous nucleation of BTO, the relative content of polar β-phase reaches 62.4% (Lambert–Beer law) and 60.1% (multi-peak intensity ratio method), with a β-phase absolute crystallinity of 33.38%. The assembled piezoelectric nanogenerator (PENG) produces a stable open-circuit voltage of 10–15 V, representing an approximately 2–3 fold enhancement over pure PVDF devices. The short-circuit current reaches 7 μA, with a peak power density of ~4 μW cm −2 , and the device retains ~92.3% output after 5000 cycles. This research provides an effective strategy for developing flexible PVDF-based materials for energy harvesting and wearable sensors.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Yilin Gao,Wang Xi,Hongtao Wang,Ming Gao,Ligang Tang
In this study, inspired by the adhesive proteins of mussels, a series of microencapsulated flame retardants M-DA@APP were prepared by coating ammonium polyphosphate (APP) with dopamine (DA) via coordination with metal ions, and then incorporated into epoxy resin (EP). The effects of these modifiers on the flame retardancy and mechanical properties of EP composites were systematically investigated. The results show that APP modified with Fe 3+ or Ni 2+ coordination exhibited excellent flame-retardant performance in EP. Specifically, the Fe-DA@APP/EP composite achieved a limiting oxygen index (LOI) of 30.1% and passed the UL-94V-0 rating. Cone calorimetry tests revealed that M-DA@APP significantly reduced the heat release rate, total heat release, and smoke production. The flame-retardant mechanism is mainly attributed to the metal-ion-catalyzed formation of a dense, highly graphitized char layer, which effectively insulates heat and oxygen. Moreover, owing to the improved interfacial compatibility between APP and the EP matrix enabled by the M-DA coating, the impact strength, tensile strength, and elongation at break of the composites were notably enhanced, overcoming the negative effect of conventional APP on mechanical performance. This work offers a promising strategy for developing efficient, environmentally friendly epoxy resin composites with superior flame retardancy and mechanical properties.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Zibo Du,Wen Zhao,Jianlei Qi,Shuyu Wang,Yang Su,Yanping Wang
Surface contamination on photovoltaic glass severely degrades its power-generation efficiency, thereby making the development of transparent anti-soiling coatings an important research direction. Herein, a poly (methylmethacrylate)/1H,1H,2H,2H-perfluorooctyltriethoxysilane/SiO 2 (PMMA/PFOTS/SiO 2 ) organic–inorganic hybrid transparent superhydrophobic anti-fouling coating is developed via a one-step sol–gel method. The coating exhibits a stable Cassie-Baxter state with high water contact angle (155.2° ± 1.1°) and a low sliding angle (4.8° ± 0.7°), demonstrating excellent superhydrophobic characteristics. Optical tests demonstrate an average transmittance of 87.6% in the 400–2500 nm range and only 8.3% external quantum efficiency (EQE) attenuation at 800 nm compared to photovoltaic devices, significantly outperforming commercial superhydrophobic coatings (58.3% attenuation). This enables synergistic gains in dust resistance and photon capture efficiency. Additionally, after 24 h immersion in alkaline solution, the coating hydrophobicity is enhanced, with WCA increasing to 165.1° ± 1.4°. We believe that the designed superhydrophobic coating with integrated functionalities of self-cleaning, high transmittance, and alkali-induced self-enhancement can provide important solutions for maximizing the long-term power generation efficiency of photovoltaic glass in complex outdoor environments.
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高影响因子
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