INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Hong Zhang,Xin Zhang,Bo Wang,Bo Ren,Xiaodong Yang
Food spoilage leads to plenty of food being wasted every year. Safe and multifunctional food preservation packaging is urgently required to prevent food from contamination. Chitosan/gallic acid/Fe 3+ (CSGA-Fe 3+ ) composite films were synthesized by incorporating gallic acid (GA) and Fe 3+ into a chitosan solution. The integration of GA forms covalent and hydrogen bonds with chitosan, whereas Fe 3+ addition establishes metal-ligand interactions with both chitosan and GA, resulting in a film characterized by a multi-crosslinked network structure. This multi-crosslinked system substantially enhanced the material's mechanical properties and increased resistance to oxidation and ultraviolet degradation. The data indicate that the mechanical strength of chitosan/gallic acid (CSGA) films, with an inclusion of 0.3 mmol of GA, improved by 37.5 % over pure chitosan (CS) films. Moreover, the mechanical strength of the CSGA-Fe 3+ films saw a significant increase of 124.2 %, escalating from 1.32 MPa to 17.72 MPa. Additionally, the free radical scavenging capacities of the CSGA and CSGA-Fe 3+ films rose by 279.4 % and 255.0 %, respectively, compared to the pure CS film. The UV-blocking efficacy of the CSGA-Fe 3+ films, evaluated at 365 nm, reached 84.9 %. The water contact angle of the CSGA-1.5Fe 3+ film increased by 18.08 % compared to the CS film. This study provides innovative ideas to promote the broader application of safe and multifunctional chitosan-based composite films in food preservation packaging.
研究领域:
食品科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2015
·
IF 5.337
Huanzhi Zhang,Yongjin Zou,Yujia Sun,Lixian Sun,Fen Xu,Jian Zhang,Huaiying Zhou
Phase-change materials (PCMs) have promising applications in the fields of solar energy storage, energy conservation in buildings , thermal insulation , and thermal regulation. In this study, novel multifunctional composite films were prepared via a thermosetting process using poly(vinyl chloride) (PVC) as a film matrix, microencapsulated PCMs (micro-PCMs) as a temperature-regulating additive and TiO 2 nanoparticles (nano-TiO 2 ) as a UV-blocking additive. The latent heat of the film fabricated with 6 wt% micro-PCMs and 6 wt% nano-TiO 2 is 9.226 J/g. The film also shows high thermal stability, with no obvious change in thermal performance after 100 heating–cooling cycles. The temperature of a space enclosed by the film fabricated with 6 wt% micro-PCMs and 6 wt% nano-TiO 2 can be controlled in the range 25–28 °C for 3298 s. The composite films exhibit a significantly decreased UV transmittance due to the UV absorption of nano-TiO 2 . Furthermore, the thermal conductivity of the sample fabricated with 6 wt% micro-PCMs and 6 wt% nano-TiO 2 is 0.2356 W/(m K), which is comparable with that of a pure PVC film. These findings indicate that the novel thermal-insulating film is promising for use in energy-efficient building and automobile applications.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
Foods
·
2025
·Vol. 14
·期 10
·1678
·
IF 5.1
Mengyuan Niu,Jiaxin Wang,Zhaoying Xun,Mengzhuo Liu,He Li,Weiyi Wang,Yuchen Wang,Chao Guo,Hanyu Li,Ning Xu,Huajiang Zhang,Ning Xia
In this study, hazelnut shell-based vegetable carbon black (HCB) was synthesized from renewable agricultural waste and incorporated into chitosan (CS) and gelatin (GEL) matrices to fabricate active packaging films. The structure of HCB was characterized, and the structure, physicochemical properties, antibacterial activity, ultraviolet resistance, and functional performance of CS-GEL-HCB films with varying HCB contents (0, 1, 5, and 9 wt% based on GEL) were systematically investigated. The FT-IR results revealed that intermolecular hydrogen bonds were formed between HCB and CS and GEL. The results showed that the tensile strength of CS-GEL film (15.83 ± 0.40~32.06 ± 0.61 MPa), as well as its water vapor and oxygen barrier properties (0.55 ± 0.03~0.15 ± 0.02 g/d·m2), and UV-visible light barrier properties were significantly improved (p< 0.05) after the addition of HCB, while the water permeability, moisture content, and water solubility of CS-GEL film were effectively reduced (24.84 ± 0.45~20.10 ± 0.45%). More importantly, the CS-GEL-HCB film exhibited enhanced ultraviolet barrier properties, which helped delay the oxidation and deterioration of the oil sample during the accelerated light oxidation test. These results suggest that the CS-GEL-HCB film could serve as an effective food packaging material to improve the oxidation stability of soybean oil in the food industry, showing great potential in maintaining food quality and extending shelf life.
研究领域:
食品科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Future Foods
·
2024
·
IF 5.2
Baoshan Tang,Jinju Ma,Lanxiang Liu,Juan Xu,Hong Zhang,Kun Li,Xinghao Tu,Qingfang Guan
In order to improve the water-resistance and ultraviolet (UV) barrier properties of pullulan (PL) film, edible composite films were prepared by solution casting based on PL and shellac (SH). The physical properties, thermal stability, mechanical properties, water vapor permeability and UV barrier of the composite films were characterized. The analysis of the functional properties revealed that the composite films had good compatibility, water-resistance (33.50˚–60.15˚), and strong UV-blocking properties (84.60%–0.00%). The addition of SH improved the water-resistance and mechanical properties of the films, but the thermal stability was slightly reduced. These films can be used as an edible coating on Chinese cherries. According to the characteristics of weight loss, decay incidence and other indicators of cherries, the PL-SH composite films can keep Chinese cherries fresh at room temperature at least for 7 days. Therefore, PL-SH composite films may be an environmentally friendly packaging material with application prospects in the fruit preservation industry.
研究领域:
食品科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CELLULOSE
·
2024
·Vol. 31
·期 7
·4627-4644
·
IF 4.9
Yuan Hua-Bin,Zhao Manman,Zhu Xiaowei,Sha Desheng,Chen Guoqiang,Xing Tieling
Numerous techniques for achieving superhydrophobic modification of cotton fabrics are documented in existing literature. However, pursuing multifunctionality, especially concerning textile performance, remains a topic of significant research interest. This study introduced a straightforward yet highly effective method for producing modified cotton fabric (SFC) exhibiting a vibrant orange-yellow coloration, along with exceptional self-cleaning, stain-resistant, UV-blocking, anti-icing, and photothermal de-icing properties, through the utilization of ferric chloride hexahydrate (FeCl 3 ·6H 2 O) and polydimethylsiloxane (PDMS). The surface of the SFC was evenly coated with small nanoparticles, identified by X-ray diffractometer (XRD) as β-FeOOH. The SFC displayed a water contact angle of 165.9° and a sliding angle of 2°, demonstrating outstanding superhydrophobicity. In addition, the SFC achieved a UPF value of 80, indicating exceptional UV-blocking capabilities. Additionally, the SFC exhibited remarkable stability when subjected to harsh conditions, including exposure to strong acid (pH = 1) and alkali (pH = 13), various chemical reagents, 600 min of water washing, and 30 cycles of abrasion testing. The approach proposed in this study offers the advantages of cost-effectiveness, environmental friendliness, and fluorine-free characteristics, and is applicable across a range of fabrics, and has certain practical utility. Graphical abstract
研究领域:
材料科学
·
纺织工程
✓ 已验证
产品关联
DOI
高影响因子
Advanced Sustainable Systems
·
2020
·Vol. 4
·期 7
·2000043
·
IF 4.869
Zi Wang,Lirong Tang,Fengcai Lin,Yanping Shen,Yandan Chen,Xuerong Chen,Biao Huang,Beili Lu
Using natural biomass resources to synthesize degradable membrane materials, which may replace traditional plastics, is one of the strategies that can reduce pollution. Herein, a mechanochemical method for preparation of degradable biofilm tannic acid-modified microfibrillated cellulose (TA@MFC)-G is proposed. The method involves modification of a microfibrillated cellulose (MFC) with plant polyphenol (tannic acid), followed by complexation with gelatin in an aqueous solution. Compared with pure gelatin film, MFC film has higher intrinsic crystallinity and thermal stability. Due to the synergistic effect of tannin and MFC, the mechanical strength and flexibility of the films are improved; its tensile strength is higher than 75 MPa and its elongation at break is as high as 13%. The films also have high UV blocking ability. Finally, the films are printed using Fe 3+ ions or conventional ink, from which it is observed that the pattern printed using Fe 3+ ions has higher solvent resistance and water repellency compared to that printed using conventional ink. This biodegradable film may have promising applications as food packaging materials or in other industries.
研究领域:
材料科学
·
生物学
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Song Zhang,Zhang Chen,Yanfeng Gao
Excessive ultraviolet (UV) radiation exposure induces photooxidative stress in plants, leading to severe cell damage. Current packaging films often rely on nonrenewable, petroleum-based UV absorbers, which may pose potential health risks. Calcium lignosulfonate, a natural byproduct derived from the pulp and paper industry, has attracted significant attention as a sustainable alternative to petroleum-based UV absorbers. In this study, calcium lignosulfonate was hydrophobically modified to enhance its compatibility with nonpolar low-density polyethylene (LDPE), and a UV-blocking composite film was subsequently fabricated. The hydrophobic modification significantly increased the water contact angle of calcium lignosulfonate from 5° to 101°. Incorporating the modified calcium lignosulfonate into LDPE improved both the melting point and crystallinity of the polymer. The resulting composite film demonstrated excellent UV-blocking performance, achieving a UV-A blocking rate of 95% and a UV-B blocking rate of 99%, and effectively mitigated photooxidative browning in “Fuji” apples. This film exhibits great potential for anti-photooxidation packaging applications while simultaneously reducing dependence on petroleum-based resources.
研究领域:
食品科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Qingyang Pang,Li Bian,Jiebing Xu,Yuhang Jia,Chan Wang,Yingjie Zhang,Qiang Ju,Qiong Wu,Zhenlan Fang
Photochromic transparent wood (PTW) is a kind of highly desirable, green, energy-saving building material with a practical aesthetic. The application of PTW in smart windows still faces daunting challenges owing to the poor stability of photochromic reversibility and low sensitivity to sunlight. In this work, we develop a kind of prominent switchable PTW based on poplar wood (SPTW-P) that shows high sensitivity to sunlight using a new simple fabrication method. In contrast to commonly reported UV-responsive counterpart, our SPTW-P, obtained by microencapsulating active component and polymer with matched refractive index, exhibits the fastest switchable (∼1.5 s) photochromic response to sunlight, high sensitivity of color changing from colorless to peachy pink, strong mechanical strength (87.3 MPa), good transparency, and ideal cycling stability, as evidenced by the 100% maintenance of its original photochromic effect after cycling 30 times. The SPTW-P material not only shows superb UV-blocking (the highest UV-blocking value is up to 97.7%) for protecting skin, excellent thermal insulation for energy saving, good size maintenance, wonderful shape, and chemical stability (100%), but also exhibits excellent aesthetic properties (e.g., moldable aesthetic patterns). This work could promote the development of aesthetic functional transparent wood as sustainable building materials to substantially reduce carbon emissions and energy consumption.
研究领域:
材料科学
·
绿色能源
·
建筑技术
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2022
·
IF 11.322
Hao Sun,Hongjie Bi,Zechun Ren,Xinyuan Zhou,Tong Ji,Min Xu,Zhenhua Huang,Liping Cai
Natural wood has been used as building components for thousands of years due to its abundance, high mechanical strength , and durability. However, suboptimal mechanical performance, moisture sensitivity, and inferior optical performance have severely limited its further development and application prospects. Herein, we fabricated a novel full-wood material based on process of delignification , TEMPO-oxidation, in situ lignin deposition, and densification . The resulting reconstructed wood exhibited excellent optical properties , including ultraviolet-blocking, visible-light transparency, and photothermal conversion ability. Moreover, the densified structure integrated the high mechanical strength (high longitudinal tensile strength of 196.8 MPa and Young's modulus of 24.5 GPa) with significantly high resistance to water. The novel concept of reconstructed wood proposed in this study provides new horizons and design guidance for applications in green energy-efficient buildings, photothermal conversion apparatus, decorative materials, and optical devices.
研究领域:
材料科学
·
光学工程
·
林业科学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Zhiping Wang
Carboxymethyl cellulose (CMC) holds great potential for food preservation applications, provided its mechanical properties and UV-blocking performance are significantly enhanced. Considering this, the study focuses on developing a novel dual-layered film using the layer-by-layer casting method. The resulting film exhibits a compact dual-layered structure, with a nacre-like upper layer (chitosan/montmorillonite/tea polyphenols) and a dense bottom layer (CMC/sodium alginate/nano-hydroxyapatite/tea polyphenols). This design enhances tensile strength through hydrogen bonding interactions among nanoparticles, active substances, and polymers, while the nacre-like and layered structures contribute to improve elongation. Furthermore, the incorporation of tea polyphenols significantly enhances the UV-blocking performance of the film. Compared to the single-layer film, the dual-layered film exhibits improved tensile strength (from 45.19 MPa to 63.58 MPa), elongation (from 52.56 % to 82.45 %), and UV-blocking capability (from 99 % to 100 %). Additionally, the dual-layered film presents excellent water resistance (moisture content: 13.64 %, water solubility: 6.26 %), oxygen permeability (1.841 × 10 −3 g/m 2 s) and antioxidant activity (scavenging capability for DPPH: 67.25 %). When employed as packaging film, the dual-layered film effectively reduces tomatoes weight loss from 9.04 % to 7.52 % and extends shelf life. This study offers an innovative approach to promote the development of CMC for food preservation applications.
研究领域:
材料科学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2023
·
IF 5.9
Yue-hong Zhang,Meng-jiao Zhai,Lei Shi,Qin-yang Lei,Shu-tong Zhang,Lei Zhang,Bin Lyu,Shun-hua Zhao,Jian-zhong Ma,Vijay Kumar Thakur
Vitrimers with reversible cross-links are emerging promising sustainable materials with reprocessability and recyclability. Here, castor oil-based epoxy resin (EMCO) with epoxy group and carbon-carbon double bonds was prepared through a two-step process and then cured with itaconic acid (IA) through epoxy-acid ring-opening reaction and free radical polymerization to fabricate fully bio-based epoxy vitrimers containing reversible transesterification bond. The thermal-mechanical properties, reprocessability, repairability, and recyclability could be balanced by varying the molar ratio of EMCO to IA. When the carboxyl group/epoxy group molar ratio reached 1.0, the EMCO-IA 1.0 vitrimer exhibited the highest tensile strength of 14.39 MPa and T g of 52.95 °C. Moreover, the vitrimer can be effectively remodeled (2 h at 180 °C) to prepare films and self-healing thanks to a rapid and mild stress relaxation process (2.56 min at 110 °C) and low activation energy (60.94 kJ·mol −1 ). More significantly, EMCO-IA vitrimer could be degraded in ethanol solution and recycled to prepare films and also exhibited excellent UV blocking ability. Overall, the EMCO-IA vitrimer can achieve a highly efficient closed-loop recycling without significantly sacrificing the mechanical properties, which can extend the service life and facilitate the sustainable development of the castor oil-based polymeric material.
研究领域:
材料科学
·
可持续发展
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2023
·
IF 5.9
Kun Wang,Xinge Liu,Shumin Yang,Jianfeng Ma,Genlin Tian,Lili Shang,Zehui Jiang,Qianli Ma
Bamboo, as an important biomass raw material, has a very favorable prospect for Nature-based Solution. Here we provide a method to prepare bamboo-based lignocellulosic nanofibrils (LCNFs) and films with excellent impedance performances by p -toluenesulfonic acid ( p -TsOH) under mild condition. The combined delignification factor (CDF) and combined hydrolysis factor (CHF) were introduced to regulate the hydrolysis severity. The resultant LCNFs with uniform diameter retained a plentiful reactivity without surface functional group changing. The ascendant thermal stability ( T max > 360 °C) of the LCNFs were also obtained. The films made by the LCNFs can block about 99 % UV light with transparency greater than 50 % which exhibited remarkable UV resistance in both UVA and UVB regions. Furthermore, the films presented excellent hydrophobic stability which showed large contact angles (water, 89–99°) and maintained at 64° after 300 s. These properties make bamboo-based materials substitute bamboo for plastics and can be used in aviation, construction, automotive industry, packaging and many other fields, conforming to international initiatives.
研究领域:
材料科学
·
生物质资源利用
·
环境科学
✓ 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）