POLYMER ENGINEERING AND SCIENCE
·
2025
·
IF 3.2
Teng Ma,Yaxin An,Zengliang Wen,Jiaxin Zhang,Dandan Lian,Jianjun Lu,Hua Wang
This study innovatively used polyethylene glycol (PEG) as a multifunctional modifier to prepare nano-zinc oxide and polyhexamethylene guanidine hydrochloride (Nano ZnO/PHMG) hybrid melt-blown antibacterial composite materials by twin-screw blending. PEG overcame traditional additives' single-function limitation, achieving dual structural regulation and antibacterial enhancement. PEG rheological properties were modulated to produce multistage fiber structures, improving filtration performance, while simultaneously optimizing antibacterial component distribution through its water solubility. Systematic experiments revealed how PEG-regulated local viscosity affected multistage fiber formation and pore distribution, directly impacting filtration performance. At 12% PEG loading (ABA-PP-12PEG), optimal comprehensive performance was demonstrated: 77.45% filtration efficiency (153.5% increased) with 34.0% lower resistance (11.28 Pa). Post-treatment further enhanced performance to 80.06% efficiency and 10.68 Pa resistance. Antibacterial rates surged 6.7-fold from 1.78 to 12.01.
研究领域:
材料科学
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纳米技术
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环境工程
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高分子科学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2025
·
IF 3.2
Ge Yan,Qifeng Chen,Lixin Zhang,Yunjia Wang
This study presents a reusable adsorbent material for industrial wastewater treatment. Double-network interpenetrating gel beads were prepared via condensation reaction and hydrogen bonding between sodium alginate and collagen, combined with PVA and ion crosslinking. The addition of collagen enhanced the equilibrium swelling ratio, strengthened the double-network structure, and increased adsorption sites. Optimal adsorption of tannic acid occurred at a collagen/PVA mass ratio of 1:2, achieving a maximum capacity of 261.53 mg/g and a removal rate of 78.46%. Influenced by multiple factors, the adsorption process followed pseudo-second-order kinetics, indicating chemisorption dominance. The beads maintained good adsorption capacity and structural stability over four adsorption–desorption cycles, demonstrating excellent reusability.
研究领域:
材料科学
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环境工程
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化学工程
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高分子科学
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吸附技术
✓ 已验证
产品关联
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2025
·
IF 3.2
Zhanpeng Jiang,Zeqi Cheng,Chuanpeng Li,Jiuyin Pang
Since commercially available metal ion antifungal agents face the problems of polluting the environment and endangering human health, the development of environmentally friendly antifungal agents has become a top priority. Xylan nanoparticles with an average particle size of 500 nm were extracted from a biomass resource, corn kernel, by secondary alkali treatment. Hyperbranched polymers with terminal hydroxyl groups (HBP-OH) were synthesized using maleic anhydride and diethanolamine in a “one-step melting method”. New reactive functional groups were introduced on the hydroxyl group of HBP-OH by a quaternization reaction. The successful preparation of the quaternary ammonium cationic hyperbranched polymer (HBP-L) was demonstrated by IR and 1 HNMR. Cross-linking of HBP-L with xylan nanoparticles via glutaraldehyde conferred new antifungal properties to the xylan nanoparticles. Infrared spectroscopy and nuclear magnetic hydrogen spectroscopy proved the attachment of the polymer to the nanoparticles. The synthesized antifungal agent showed class I inhibition of both fungi, with weight loss reduced to 5%. The innovative application of modified nano-xylan in wood provides new ideas for the commercialization of polysaccharide-based antifungal agents.
研究领域:
高分子科学
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林产化工
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生物材料
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绿色化学
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纳米技术
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天然产物化学
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木材科学
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产品关联
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2025
·
IF 3.2
Jinpeng Liang,Zhigang Shen,Haijun Xiao,Yanan Qin,Nan Sun,Danli Nie,Yuxiang Xie,Liping Yang,Baoqing Shentu,Xinming Pu
Poly(ethylene furanoate) (PEF), a sustainable alternative to poly(ethylene terephthalate) (PET), exhibits superior gas barrier properties but faces challenges in impact toughness and slow crystallization, limiting its industrial adoption. This study introduces a novel terminal modification strategy using polycyclic aromatic hydrocarbons (PAHs) to synergistically enhance PEF's performance through π–π stacking interactions, plasticization, and crystallization optimization. By incorporating PAHs (9-PBA/1-NA) as terminal modifiers, modified PEFB x and PEFN x polyesters demonstrate accelerated crystallization (15 vs. 33 min for neat PEF) and increased crystallinity (53% vs. 41%). The PAH-driven π–π stacking and V-shaped B(OH) 2 groups in 9-PBA promote chain folding and ordered packing, significantly improving oxygen barrier performance (40.9% reduction in permeability coefficient) and mechanical properties. Remarkably, PEFB 0.5 achieves a 277% increase in elongation at break and a 229% enhancement in tensile modulus compared to unmodified PEF. Furthermore, the method integrates reactive extrusion with injection molding, offering a scalable and industrially viable route for producing high-performance PEF with balanced processability, barrier properties, and mechanical strength.
研究领域:
高分子科学
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材料工程
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化学工程
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可持续化学
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塑料加工
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产品关联
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2025
·
IF 3.2
Xiaohuan Li,Donghan Li,Jiawei Liu,Honghua Wang
Thermoplastic toughening agents represent a prevalent category of epoxy resin modifiers. In practical applications, these agents can significantly enhance the mechanical properties of epoxy resins. However, due to the inherent phase separation characteristic of epoxy resins, the toughening effect is somewhat constrained. Recently, branched polymers have gained recognition for their effectiveness in toughening epoxy resins. Their low viscosity and abundant reactive groups facilitate superior toughening outcomes. This study leverages both the structural attributes of branched polymers and high-performance polyethersulfone ketone (PESK). Through nucleophilic polycondensation reactions involving bisphenol monomers such as dihydroxydiphenylsulfone (BDS), difluorophenyl ketone (DFDBK), and trifunctional monomer 1,1,1-tri(4-hydroxyphenyl)ethane (THPE), we synthesized a series of long-chain polyaryletherketones (LCBPESK) with varying degrees of branching. The fundamental properties of these materials were characterized, and they were employed for toughening modification within the epoxy resin/methyltetrahydrophthalic anhydride (E51/MTHPA) system. Characterization tests revealed that long-chain branched polyethersulfone ketones possessing both branched structures and reactive end groups effectively mitigate phase separation between the toughening agent and the epoxy resin while significantly enhancing its toughness. Notably, when LCBPESK-30 is incorporated at a loading level of 15 phr, there is a remarkable increase in impact strength by 133% in the epoxy system. In addition, we investigated the toughening mechanism of LCBPESK in E51. For polyaryl ether resins, a certain degree of branching and the presence of active end groups significantly influence their toughening effect in epoxy resins, which holds considerable industrial value and promising application prospects.
研究领域:
材料科学
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高分子化学
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复合材料
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产品关联
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2025
·
IF 3.2
Huishan Chen,Xiaoyi Sun,Ning Qing,Liuyan Tang
Hydrophobically modified ethoxylated urethane (HEUR), a typical polymer associative thickener, is extensively applied in aqueous coatings, textile printing, and resin coatings to regulate the rheological properties of the system. However, conventional branched HEURs face two critical limitations: (1) the risk of excessive cross-linking during the chain-expansion stage due to high monomer reactivity; (2) the phase-separation phenomenon in some branched HEUR aqueous solutions upon standing. To overcome these challenges, we designed and synthesized a polyhydroxy hyperbranched structure (PU-OH 3-6 ). This structure features two main advantages: a larger central backbone and a greater spacing between active groups (OH). The hyperbranched HEUR 3-6 synthesized using PU-OH 3-6 as a branched-type chain extender is more controllable and viable in the production process. Moreover, various testing methods were employed to assess the thickening performance, salt resistance, and water retention of HEUR in a pure-water system. The results indicated that the branched structures of HEUR 3-6 have better thickening properties compared with the previously reported HEUR with a linear structure (HEUR L ), and branched HEUR with using gamma-triol (HEUR GI ), pentaerythritol (HEUR P ), and xylitol (HEUR X ) to expand the chain. Among them, HEUR 5 demonstrated the best thickening effect in pure-water systems, while in salt-containing solutions, HEUR 6 with a six-branched degree showed more pronounced anti-electrolyte properties.
研究领域:
高分子科学
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材料工程
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化学合成
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流变学
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涂料技术
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产品关联
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2024
·Vol. 64
·期 11
·5649-5661
·
IF 3.2
Aigul Kydyraliyeva,Oral Beisenbaev,Kazim Nadirov,Saule Sakibaeva,Nurlybek Otarbayev,Berik Sakybayev,Saltanat Baibotayeva,Arslanbek Orynbasarov
The objective of this research is to develop a composite polymer coating with increased thermal conductivity and corrosion resistance for protecting structural materials in heat exchange apparatuses. Chemically pure compounds such as graphene, boron nitride, tyrosine, sodium hydroxide, zinc pyrophosphate, ethyl acetate, and epoxy resin with the addition of secondary polypropylene were utilized as raw materials. The obtained coatings were evaluated using an emission scanning microscope equipped with an energy-dispersive spectroscopy (EDS) detector. Electrochemical activity was measured using standard equipment within a frequency range of 0.1–0.01 Hz. Thermal conductivity and corrosion resistance were measured at 0.24 W/m K and 9.70 Ω/cm 2 when using only epoxy resin with the addition of secondary polypropylene. When employing a composite consisting of epoxy resin with the addition of secondary polypropylene, boron nitride, graphene, tyrosine, and zinc pyrophosphate, the thermal conductivity and corrosion resistance values were 1.65 W/m K and 11.10 Ω/cm 2 , respectively. Polymer coatings containing 30% composite demonstrated the highest thermal conductivity (1.65 W/m K) and corrosion resistance (11.20 Ω/cm 2 ). The research findings can be utilized to create polymer coatings with enhanced thermal conductivity and corrosion resistance values. This polymer coatings could serve as structural materials for heat exchange devices. Highlights Corrosion resistance increase with complexing of composite coating. Thermal conductivity increase with complexing of composite coating. Use of epoxy resin with secondary polypropylene make thermal conductivity value.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2024
·
IF 3.2
Peng Zhu,Chundi Pan,Jianxin Liu,Luyao Feng,Huapeng Zhang,Ning Ma,Fang-Chang Tsai
During the use, storage, or cleaning of polyetherimide (PEI) solutions, undesired white films often appear. In this study, equivalent experiments of PEI solutions involving room temperature evaporation and solvent exchange with water are conducted to simulate their air exposure and water washing processes, respectively. Specifically, we focus on investigating the phenomenon and mechanism of white appearance in their films from room temperature evaporation with a cellular-like porous structure and solvent exchange films that exhibit a finger-like porous structure. Results obtained from FE-SEM, UV–Vis spectroscopy, and Datacolor reflectance spectrophotometer indicate that both types of porous structures exhibit long-range disorderliness, leading to multiple scattering of incident light and high reflectance across the visible light spectrum resulting in a white appearance. Furthermore, due to different structures caused by phase separation, mechanical properties of solvent exchange films are significantly inferior compared with those of films from room temperature evaporation. Finally, we verify the universality of these mechanisms for white film formation in PEI through experiments using PS and PMMA. This study provides insights into efficient utilization of polymer solutions and offers new strategies for biomimetic preparation of white films. Highlights White cellular-like porous films were prepared by solvent evaporation method. White finger-like porous films were produced through solvent exchange by water. Multiple scattering caused by above porous structures led to white appearance. Finger-like porous films with nanosphere as the basic scatter unit had a luster. Universality of both white formation mechanisms was verified by PMMA and PS.
研究领域:
材料科学
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高分子化学
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产品关联
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2024
·
IF 3.2
Honglin Li,Wanjun Liu,Zhize Chen
An efficient and scalable method to prepare oligolactic acid stereocomplex microplates (SC-OLA-MPs) is developed. Oligolactic acid was firstly synthesized via the melt polycondensation of lactic acid. Then, the oligo ( L -lactic acid) and oligo ( D -lactic acid) were crystallized with a mixture of dichloromethane and acetone, and consequently the stereocomplex microparticles were obtained in the form of circular microplates with a diameter of approximately 2 μm. As an eco-friendly nucleating agent, SC-OLA-MPs were introduced into poly ( L -lactic acid) (PLLA) via melt blending. The nonisothermal and isothermal crystallization of the SC-OLA-MPs/PLLA composites were investigated, and the crystal morphology and heterogeneous nucleation phenomena during the isothermal crystallization process were photographed with POM. SC-OLA-MPs show excellent nucleating effects on PLLA crystallization. With the incorporation of 10% SC-OLA-MPs, the crystallization half-time of the SC-OLA-MPs/PLLA composite decreased from 7.18 to 0.45 min at 100°C, compared to the neat PLLA. Through a short-time molding procedure, the thermal deformation temperature of PLLA is improved by the addition of SC-OLA-MPs. Highlights Polylactic acid stereocomplex microplates were fabricated by solution crystallization. This method is easy and scalable. This microplate is an effective nucleating agent for PLLA.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2025
·
IF 3.2
Min Xu,Jinrong Yin,Zhenyong Li,Yangqi Jiang,Opoku Bismark,Xiaoji Fu,Yu Song,Xianyan Ren,Yuwang Zhong
To solve the problem that the self-generated proppant in fractures grows slowly and cannot support the fractures in time, nano-graphite (NG) was introduced into a phase change liquid (PCL) composed of “styrene-divinylbenzene (SDB)” and the resulting self-generated proppants were constructed with a high growth speed. The NG/PCL started the phase transition from liquid to solid after 8 min at about 55°C in the wellbore section, and the phase transition was completed for only 2.5 min at a constant temperature of 65°C in fracture. Moreover, due to the high thermal conductivity and heterogeneous nucleation of the NG powder, the maximum strength of self-generated proppant in the NG-containing system can reach about 56.2 N during its growth process, which is 34.4% higher than that of pure SDB. The yield of the well-dispersed spherical self-generated proppants NG/SDB under the completely static condition can reach about 80%, of which the proppants with a particle size of 0.4 ~ 0.7 mm account for about 80%. NG/SDB exhibited an ultra-low apparent density of approximately 1.004 g/cm 3 , high compressive strength, and a crushing ratio of less than 1% at a closure pressure of 52 MPa, which is lower than that of commercial quartz sand and ceramsite proppants. Highlights Self-generated proppants with rapid growth were developed by the introduction of NG. Positive effects of NG in PCL system are obvious on phase transition and growth. NG/SDB is qualified in phase transition timing and compressive strength. The single-microsphere yield of NG/SDB is about 80%. The crushing ratio of NG/SDB as low as 3.92% at a closure pressure of 69 MPa.
研究领域:
材料科学
·
石油工程
✓ 已验证
产品关联
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2024
·
IF 3.2
Yanbo Li,Jinsuo Yu,Deyu Wei,Chengkai Liu,Yan Zhao,Junjia Bian,Shulin Sun,Hongwei Pan,Huili Yang,Lijing Han,Huiliang Zhang
Biodegradable materials provide protective properties comparable to conventional plastics while diminishing reliance on nonrenewable resources. Environmentally friendly polymer blends were prepared by melting poly(R)-3-hydroxybutyrate-co-(R)-3-hydroxyhexanoate) (PHBHHx) with poly (butylene succinate) (PBS). PBS was synthesized through esterification and polycondensation using 1,4-butanediol and succinic acid, with tetrabutyltitanate as the catalyst. The PHBHHx is supplied by Bulepha®PHA Company of China, model number BP330. The effects of PHBHHx content on thermal behavior, compatibility, and thermal stability of PBS/PHBHHx blends were systematically investigated. Differential scanning calorimetry (DSC) results indicated that the addition of PHBHHx influenced the crystallization behavior, the crystallization temperature ( T c ) of PBS decreased meanwhile, the crystallization half-time of PBS is reduced to 1.5 min compared with neat PBS (5 min) after isothermal is crystallized at 95°C. Polarized Optical Microscopy (POM) images also revealed that crystallization rate accelerated in the blend with increasing PHBHHx content. Rheological and Scanning Electron Microscopy (SEM) analysis demonstrated that incorporating a significant content of PHBHHx reduced compatibility between PBS and PHBHHx. Mechanical property testing indicates that the addition of PHBHHx reduced the toughness of blends. Additionally, the addition of a small amount of PHBHHx imparts a higher crystallinity (56%) and heat resistance of the PBS/PHBHHx blends (78°C) was higher than neat PBS (74°C). Highlights Laboratory synthesis of high molecular weight PBS. Optimal ratios improved crystallinity and thermal stability of blends. A systematic study of the crystallization properties of blends.
研究领域:
材料科学
·
高分子科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2024
·
IF 3.2
Shijun Nie,Zhengyu Li,Xinyi Li,Xingxin Lu,Chunli Gong,Zhengguang Sun
A balanced relationship among ionic conductivity, mechanical properties and alkaline stability of anion exchange membranes (AEMs) is essential for their practical application in fuel cells. Herein, a porous substrate (BC@LDH) with hierarchical structure was constructed using natural bacterial cellulose (BC) as a template and then in situ grew inorganic hydroxide ion conductor (layered double hydroxide, LDH). The membrane was fabricated via a filling together with sol–gel crosslinking strategy after impregnating an ionomer containing both quaternary ammonium and hydroxyl groups into the porous substrate and then crosslinked by organosiloxane. Due to the synergistic enhancement effect of BC, LDH and cross-linking, the obtained membrane exhibited a tensile strength of 47.48 MPa that was 88.3% higher than that of the pure ionomer membrane, and showed an ionic conductivity of 70.7 mS cm −1 (80°C) which benefited from the introduction of ionic conductor LDH. More importantly, its alkaline stability was significantly improved and the residual conductivity ratio was still as high as 81.5% even after hot alkali treatment for 580 h. The direct methanol fuel cell assembled with this membrane exhibited a peak power density of 13.6 mW cm −2 with an open-circuit voltage of 0.72 V, indicating its potential application in biomass-based AEMs for fuel cells. Highlights Hierarchical porous substrate comprising LDHs anchored BC fiber was prepared. LDH@BC served as a reinforcing substrate and an ion transport medium. The crosslinked membrane showed significantly improved alkaline stability. The membrane had high ionic conductivity and mechanical strength. Providing a new way to design biomass-based AEMs with high performance.
研究领域:
材料科学
·
能源工程
·
生物材料
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）