Advanced Composites and Hybrid Materials
·
2022
·Vol. 5
·期 2
·991-1002
·
IF 11.806
Xu Pei,Huang Bincheng,Tang Ruobing,Wang Zhenfeng,Tu Jiaying,Ding Yunsheng
The functionalization and distribution of conductive fillers and the interfacial compatibilization of polymer blends is the basic scientific problem of electromagnetic interference (EMI) shielding composites. Polylactic acid/polycaprolactone (PLA/PCL)-based nanocomposites containing polymerizable ionic liquid copolymer of poly(methoxy poly(ethylene glycol) monomethacrylate-co-1-vinyl-3-ethylimidazolium bromide) (PILs) and multi-walled carbon nanotubes (CNTs) were fabricated by the melt blending. The high affinity of MEPGMA segments of PILs for both phases and the interaction between the imidazole group of PILs and CNTs improved the dispersion and compatibility of CNTs in the matrix. PILs could expand to the interfacial layers as compatibilizers because of the high affinity of MEPGMA groups for polymer phases. The migration of CNTs from PLA to PCL phase was realized by the kinetic control and PIL-modified CNTs were selectively distributed at the co-continuous PLA/PCL interface and PCL phase of the PLA/PCL/4PIL/8CNT-6 m composite with blending time of 6 min. The selective localization of CNTs at interphase significantly can form effective conductive networks at the interface for PLA/PCL/4PIL/8CNT-6 m composite, which increase the electrical conductivity of the composite. The EMI shielding efficiency of the PLA/PCL/4PIL/8CNT-6 m composites, which can reflect and absorb microwaves with multiple times, reaches up to the maximum value 41 dB. Graphical abstract
The selective localization of CNTs at interphase forms effective conductive network. EMI SE of the PLA/PCL/4PIL/8CNT-6 m composite displays 41 dB.
研究领域:
材料科学
·
复合材料
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产品关联
DOI
高影响因子
MACROMOLECULES
·
2022
·
IF 6.057
Hongzhi Liu,Ning Chen,Changqing Peng,Shuai Zhang,Tuan Liu,Pingan Song,Guolun Zhong,Hao Liu
The toughening of poly(lactic acid) (PLA) often involves the use of nonbiodegradable or petrochemical elastomers owing to the lack of effective renewable alternatives and facile routes to tailor desirable morphologies. In this work, we developed a facile and universal dynamic vulcanization strategy of dual monomers to fabricate mechanically robust PLA blends. By increasing NCO/COOH equivalent ratios between l-lysine diisocyanate (LDI) and hydrogenated dimer acid (HDA) (i.e., nNCO,LDI/nCOOH,HDA) above 1.0:1, the phase structure of the resulting PLA blends transformed from the common “sea-island” morphology to partially or fully co-continuous ones. The extraordinary impact toughness (the maximum impact strength up to 109.8 kJ m–2) in combination with the balanced strength and stiffness was attributed to a continuous biopolyamide elastomer (HDAPA) with the simultaneous improvement in both the cross-linking level and interfacial compatibilization. Atomic force microscopy (AFM)-based nanomechanical mapping results suggested that the cross-linking of HDAPA domains gradually prevailed from the boundaries into the whole domains with the elevated nNCO,LDI/nCOOH,HDA ratios. The mechanisms regarding multiple reactions and co-continuity development at an ultralow concentration of the minor HDAPA phase were elucidated. Intriguingly, the enhanced clustering-triggered emission was observed for the PLA/HDAPA blends with a fully co-continuous structure.
研究领域:
材料科学
·
生物医学工程
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Xuhui Zhang,Guangyao Ji,Mengying Gao,Jing Huang,Ting Li,Yang Wang,Shibo Wang,Weifu Dong
The realization of high stiffness, high extensibility, and multi-functions for polylactic acid (PLA) is a vital issue for its practical applications. Herein, hydroxyalkylated tannin acid (mTA), a phenolic compound-based modifier with plentiful flat aromatic structures and flexible isopropanol oligomers, is designed and fabricated to act as the multifunctional modifier for PLA. The mTA exhibits the capability of emitting fluorescence and blocking UV light due to the combination of flat aromatic structures and plentiful flexible chains. Besides, mTA with high grafting degree (h-mTA) shows an excellent compatibility to PLA due to the hydrogen bonding interface and the high affinity of grafted isopropanol oligomers to PLA. As a result, the as-prepared PLA/h-mTA20 composite exhibits a strikingly improved extensibility by 61.2 times while maintaining the high yield strength of PLA. Moreover, PLA/h-mTA can serve as a fluorescent material with multi-mode responsiveness as well as a UV-shielding material with high transparency. We envision that this work opens a novel yet facile way to prepare a strong, tough, and multifunctional PLA material with expanded application scopes and will promote the practical applications of phenolic compounds in polymers.
研究领域:
材料科学
·
高分子化学
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产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Weitao Wang,Ben Niu,Ruiling Liu,Hangjun Chen,Xiangjun Fang,Weijie Wu,Guannan Wang,Haiyan Gao,Honglei Mu
This study presents the extraction of cellulose from water bamboo byproducts to prepare polylactic acid (PLA)/cellulose antibacterial packaging material. The cellulose was modified using a silane coupling agent, which improved the interfacial compatibility between cellulose and PLA . Upon coating the PLA onto the modified cellulose sheet, the water contact angle of the composite material increased from 11.42° to 132.12° and the water absorption rate decreased from 182.52% to 55.71%, which improved the water resistance performance of the material. The addition of cinnamaldehyde in the PLA layer imparted antibacterial activity to the PLA/cellulose packaging material. This packaging material effectively inhibited the mycelial growth and spore germination of Aspergillus niger and Trichoderma harzianum isolated from shiitake mushroom. Additionally, the study investigated the effects of the composite on the postharvest quality of shiitake mushroom. Overall, the packaging material contributed to shiitake mushroom storage and can be applied to other perishable food products.
研究领域:
食品科学
·
材料科学
·
微生物学
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产品关联
DOI
PubMed
高影响因子
Science China-Technological Sciences
·
2023
·Vol. 66
·期 5
·1461-1470
·
IF 4.6
Xiang Xin,Chen DongYun,Li NaJun,Xu QingFeng,Li Hua,He JingHui,Lu JianMei
Although many superwetting materials have been designed for the treatment of oil-containing wastewater, separation strategies for oil-in-water systems containing bacteria have rarely been reported. Herein, poly(vinylidene difluoride)- and poly(lactic acid)-blended fibrous membranes loaded with silver and copper oxide nanoparticles were successfully prepared by a two-step method of electrostatic spinning and liquid-phase synthesis. The product membrane showed excellent super-oleophilic properties in air and hydrophobicity under oil. It could separate water-in-oil emulsion systems containing surfactants with an efficiency above 90%. More importantly, the nanoparticle-loaded fibers were characterized by material degradability and slowly released ions. The fibers exhibited excellent antibacterial activities against both gram-positive and -negative bacteria. This work provides a feasible strategy for water-in-oil emulsion separation and bacterial treatment of wastewater.
研究领域:
材料科学
·
环境工程
·
纳米技术
·
化学工程
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产品关联
DOI
PubMed
高影响因子
PROCESS BIOCHEMISTRY
·
2023
·
IF 4.4
Junyan Wang,Liang Liang,Wei Shang,Noor Huda Ismail,Raja Azman Awang
The main goal of periodontal therapy is to fully regenerate the bone that supports teeth while preventing non-osteogenic tissues from interfering with bone regeneration . There is no double-functional repair material in the existing treatment method. Hydroxyapatite (HAp) has been used as a bone substitute in biomedical applications. Polylactic acid (PLA) can effectively inhibit the growth of adherent cells and play a protective role as a barrier. It is possible to combine these two methods to prepare a guided regeneration membrane for guiding periodontal bone regeneration. In this study, HAp microtubules were prepared through hydrothermal synthesis , and bilayer films were prepared through self-evaporation with PLA. The HAp microtubules/PLA membrane had better tensile and breaking strengths and lower fracture productivity than the PLA membrane. The expansion rate reached 34% after 2 h, and the degradation rate exceeded 25% after 40 days. The results showed that the membrane composite had the clinically quoted mechanical requirements. The results of the cell experiments also showed that the membrane had no cytotoxicity. The HAp microtubule side can promote the expression of genes and proteins related to osteogenesis, while the PLA side can inhibit cell adhesion . The HAp microtubules/PLA membrane has stability and good mechanical properties. The double-layer structure has the function of a biological barrier and promotes bone formation.
研究领域:
牙科材料
·
组织工程
·
生物医学工程
·
口腔生物学
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产品关联
DOI
高影响因子
SOLID STATE IONICS
·
2025
·
IF 3.3
Chunzhi Du,Ruitai Liu,Rui Zhou,Hao Wu,Zhiwei Sang,Yunteng Jiang
As the cornerstone of next-generation energy storage technology characterized by high safety and high energy density, the development of all-solid-state lithium batteries relies critically on the advancement of high-performance composite solid electrolytes (CSEs). In this study, LATP inorganic fillers were incorporated into a PEO/PLA/LiTFSI matrix for the first time to fabricate a novel organic–inorganic composite solid electrolyte (CSE) membrane. Using this membrane, an all-solid-state graphite anode battery with an LFP│CSE│C (graphite) configuration was assembled. The CSE film containing 15 wt% LATP demonstrated superior overall performance, exhibiting a room-temperature ionic conductivity of 1.6 × 10 −4 S/cm. This represents an enhancement of approximately five orders of magnitude compared to the pure PEO/PLA/LiTFSI solid polymer electrolyte. At 60 °C, the ionic conductivity reached 9.6 × 10 −2 S/cm, reflecting a 600 % improvement over its room-temperature value. The electrolyte exhibited an electrochemical stability window of 4.8 V and an ion transference number of 0.7. After 100 cycles, the battery demonstrated excellent cycling durability at 0.2C and 60 °C, retaining 96.5 % of its initial capacity—a 10 % improvement in capacity retention—with a Coulombic efficiency of 99.56 %. The PEO/PLA/LiTFSI/LATP composite solid electrolyte (CSE) represents a promising flexible electrolyte system for all-solid-state lithium batteries, offering a viable strategy for advancing the development of current all-solid-state lithium batteries with graphite anodes.
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DOI
高影响因子
COMPUTATIONAL MATERIALS SCIENCE
·
2026
·
IF 3.7
Yuanchao He,Guangxiang Zhang,Huijia Lu,Xiaorong Wang,Ying Yu,Shiguang Wan,Xin Liu,Miao Xie,Guiyan Zhao
This study utilized molecular dynamics simulations to incorporate a poly(lactic acid) (PLA) matrix, poly(butylene adipate-co-terephthalate) modified with glycidyl methacrylate (PBAT-g-GMA), and thermoplastic starch (TPS) into an amorphous unit cell via a one-step blending method. Additionally, five PLA/PBAT-g-GMA/TPS (70/30/0, 70/25/5, 70/20/10, 70/15/15, 70/10/20) amorphous unit cells were created using a stepwise blending method. The radial distribution functions, hydrogen bond distribution, cohesive energy density, mixing energy, and diffusion coefficient of the blend components were analyzed. The optimal composition, identified through simulations, was subsequently prepared, and its glass transition temperature (T g ) was determined using differential scanning calorimetry (DSC). The fracture surface was examined via scanning electron microscopy (SEM). Results showed that the one-step blending model did not form a distinct core-shell interface, whereas higher PBAT ratios in the stepwise blending model exhibited clearer core-shell interfaces. The 70/20/10 composition model exhibited the highest mixing energy (1067.0 kcal/mol). The number of hydrogen bonds at the PBAT-TPS interface was maximized in this model, indicating the strongest interfacial interaction. The predicted T g of the 70/20/10 composition model was 59.9 °C, differing by only 0.6 °C from the measured value. The core-shell structure was observed on the frozen fracture surface, confirming the reliability of the model predictions. This study systematically analyzed the formation, distribution, and interaction of the core-shell interface in the PLA-based ternary blend system using molecular dynamics simulations and multi-indicator analysis. An optimal blending ratio was identified, providing a theoretical foundation for future material design and optimization.
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产品关联
DOI
高影响因子
Food Chemistry-X
·
2026
·
IF 9.2
Qian Han,Shihui Liu,Xiaoling Huang,Si Chen,Wei Zhang,Pingping Wang,Fang Tang,Xiuying Liu,Chen Liu,Lijie Zhu
This study developed an antibacterial pad by immobilizing lysozyme (LZ) within porous cellulose through polyvinyl alcohol (PVA) cross-linking, reinforced with polylactic acid (PLA) barrier layers. The PLA-PVA/LZ pad demonstrated significantly enhanced structural properties, including a 65.52% increase in TS, a 78.88% rise in WCA, and an 87.62% reduction in water absorption. At an optimal loading of 4% LZ, the pads exhibited potent antibacterial efficacy, inhibiting Staphylococcus aureus ( S. aureus ) and Escherichia coli ( E. coli ) growth by 93.93% and 86.73%, respectively. Mechanistic investigations revealed that the pad disrupted bacterial cell morphology, compromised membrane integrity, suppressed ATPase activity, and elevated AKP levels. When applied to cooked rice stored at 25 °C, the pad effectively maintained microbial counts below the detection limit for 48 h, extending shelf life by at least 12 h according to Chinese national standards.
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产品关联
DOI
PubMed
高影响因子
FIBERS AND POLYMERS
·
2024
·Vol. 25
·期 3
·785-796
·
IF 2.2
Fan Liya,Zhao Xiaoyan,Zhu Xiao,Li Yangsong,Cui Zhaoliang
The spraying of pesticides not only causes the waste of chemicals but also air pollution. To make the use of pesticides become more environmentally friendly and effective, biodegradable material polylactic acid (PLA) was chosen to package pesticides in this work. Three different film preparation methods (drying, coagulation bath shaping, and steam treatment) were used to study the morphology of PLA coated films. From FESEM images, it could be observed that the steam treatment was more easy in forming pore structures of the films. The sustained release performances of PLA film with the pore size around 800 nm for tetracycline hydrochloride (TC) and hymexazol (HYM) were investigated. The results showed that both chemical temperature and solubility could affect the sustained release effect of films. Due to the slower dissolution rate of TC compared to HYM, it was prone to aggregation in PLA films, which affected the sustained release of TC. The release rates of TC and HYM could reach 98.2% (40 °C, 2.5 h) and 99.51% (60 °C, 3.0 h), respectively. The release processes of TC and HYM conformed to the first-order kinetic model. It promotes the application of environmental friendly materials in pest control of plants.
研究领域:
环境科学
·
高分子科学
·
农药技术
·
材料工程
✓ 已验证
DOI
高影响因子
Journal of Coatings Technology and Research
·
2017
·Vol. 15
·期 3
·505-514
·
IF 1.557
Zhao Yuan,Huang Chongxing,Bei Ronghua,Su Hongxia,Wang Shuangfei
Silicon oxide (SiO
x
) films are widely used as barrier layers in different types of commodity packaging and have caught the interest of manufacturers and researchers alike owing to their high barrier functionality, good acid and alkali resistance, ability to withstand high-temperature and microwave treatments, and good transparency. In this study, we first synthesized polylactic acid (PLA) films by extrusion calendaring and then deposited a SiO
x
layer on the PLA films by plasma-enhanced chemical vapor deposition to prepare SiO
x
/PLA composite films. We then evaluated the barrier functionality of the SiO
x
layer and elucidated its underlying mechanism. We also analyzed its effect on the mechanical properties of the composite films by comparing the oxygen and water vapor transmission rates, soil degradation performances, and surface morphologies of the two types of synthesized films (uncoated and coated with SiO
x
). The results showed that, because of the SiO
x
layer, the barrier properties and mechanical properties of the SiO
x
/PLA composite films were better than those of the uncoated films. In particular, the oxygen and water vapor transmission rates of the composite films were approximately 8–10 and 6–8 times lower, respectively, than those of the uncoated PLA films. In addition, the SiO
x
layer lowered the rate of soil degradation of the composite films, owing to which the weight-loss rates of the composite films were also lower than those of the uncoated films. Further, the tensile strengths and elongations at break of the composite films were higher because of the SiO
x
layer. Graphical
研究领域:
材料科学
·
高分子材料
·
包装工程
·
表面改性
·
生物降解材料
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Junzhi Jiang,Chen Chen,Meng Gao,Ruixiang Yan
Bilayer film incorporating hesperidin was made for antioxidant food preservation. • Corona treatment improved the structural stability of the bilayer films. • Hesperidin enhanced the film's antioxidant activity, particularly at 3 wt%. • P-PCH3 film excelled in mechanical, barrier, and antioxidant properties. • P-PCH3 film well-preserved the arils, cutting oxidative stress and quality loss. As concerns about environmental sustainability and food safety rise, the demand for biodegradable antioxidant packaging solutions has increased. This study develops a biodegradable bilayer composite film for antioxidant food packaging, consisting of a commercial polylactic acid (PLA) substrate coated with a polyvinyl alcohol/chitosan (PVA/CS) layer enriched with hesperidin. Bilayer films were prepared using solution casting and corona treatment, improving adhesion and structural integrity. PLA layer provides water vapor barrier and UV resistance, while the PVA/CS coating loaded with hesperidin offers mechanical strength, oxygen barrier property, and antioxidant properties. Hesperidin formed an intercalation structure in the matrix, promoting the development of hydrogen, ester, and amide bonds and enhancing corresponding film crystallinity and thermostability. Bilayer films with hesperidin exhibited improved mechanical properties, hydrophobicity, thermostability, visible light transmittance, and barrier properties (moisture, oxygen, UV), particularly the film containing 3 wt% hesperidin (P-PCH3). P-PCH3 film demonstrated significant antioxidant activity, evidenced by 89.3% DPPH scavenging and 90.2% ABTS +· scavenging. In a storage experiment, the P-PCH3 film effectively preserved the quality of pomegranate arils by mitigating oxidative stress, enzymatic browning, and weight loss. This biodegradable antioxidant packaging offers a scalable, eco-friendly solution for food preservation, addressing both food safety and environmental challenges in the packaging industry.
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DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）