npj Science of Food
·
2025
·Vol. 9
·期 1
·1-9
·
IF 7.8
Zhu Yan,Du Wangli,Cui Jian,Shao Hong,Guo Yakun,Tang Changyu,Xu Run
In this work, we adopt “hyperthermal hydrogen-induced cross-linking (HHIC) technology” to fix an interfacial control layer of polyacrylic acid (PAA) on polylactic acid (PLA) to improve the adhesion and integrity of the permeation barrier film, and meanwhile, the HHIC treatment causes no measurable damage to the functional groups of PAA and PLA. Consequently, the oxygen transmission rate decreases from 150.00 to 0.50 ml m −2 day −1 (a reduction of 99.7%), which is less than one tenth of the best value reported, and that the water vapour transmission rate decreases from 32.93 to 16.25 g m −2 day −1 (a reduction of 50.7%), which is slightly higher than the best value reported (3.8% higher). Our work shows that the HHIC technology used in this study provides an efficient way to improve the oxygen and water vapour blocking ability of PLA and may help in improving the quality of other polymer heterointerfaces in the future.
研究领域:
材料科学
·
聚合物工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Research Express
·
2025
·
IF 2.2
Suyang Lu,Jie Su,Haoran Zhan,Jintai Li,Jiaqing Li,Xulin Yang,Zhoukun He,Xiaorong Lan,Wei Feng
Polystyrene (PS), known for its low cost, excellent chemical stability, and optical transparency, has been widely used in various applications including electronic equipment packaging, pharmaceuticals, and food packaging. Although PS demonstrates some hydrogen permeability, its inherent oxygen and water vapor barrier properties require substantial improvement to meet advanced industrial standards. Reduced graphene oxide (rGO) has been extensively employed to enhance the oxygen and water vapor barrier performance of polymer materials. In this study, PS was selected to investigate the relationship between the optimal rGO loading and the oxygen/water vapor barrier properties as well as hydrogen permeability, aiming to achieve unique selective gas barrier characteristics. The water vapor transmission rate decreased significantly from 1.27 g/(m2·day) for pure PS to 0.48 g/(m2·day) for the 1% rGO-PS composite (1%GPS), demonstrating a remarkable improvement in water vapor barrier performance. Similarly, the incorporation of rGO nanofillers enhanced the oxygen barrier properties of PS, reducing the oxygen transmission rate from 4586.11 g/(m2·day) for pure PS to 138.32 g/(m2·day) for 1%GPS. Furthermore, the hydrogen transmission rates (HTR) of pure PS and 1%GPS were 907 cm2/(m2·day·0.1 MPa) and 912 cm2/(m2·day·0.1 MPa), respectively, indicating only a marginal increase in HTR. Consequently, the 1%GPS composite exhibits optimal barrier selectivity, combining superior water vapor barrier properties, oxygen barrier properties, and hydrogen permeability.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CELLULOSE
·
2017
·Vol. 25
·期 1
·463-471
·
IF 3.417
Long Keying,Cha Ruitao,Zhang Yapei,Li Juanjuan,Ren Fangping,Jiang Xingyu
Cellulose nanocrystals (CNCs) of excellent mechanical properties, high purity, high aspect ratio, and cost-efficient production have drawn many attentions as a new class of reinforcement nanofillers. We chose CNCs as reinforcement nanofillers, which were incorporated in collagen to prepare CNCs/collagen casings by a traditional extruding method. The effects of CNCs on these casings were investigated. The dispersity and compatibility of CNCs within the collagen are rather good. The presence of CNCs can improve the light transmittance, barrier property, tensile strength, Young’s modulus, and thermostability of the CNCs/collagen casings, where collagen might cross-link with CNCs by electrostatic and hydrogen bonding interaction. When the CNCs content is 4 wt%, the water vapor permeability of CNCs/collagen casing reaches the minimum of 0.18 g·mm/h·m 2 ·KPa. That concentration gave the highest light transmittance, and the mechanical properties were optimal. The development of CNCs/collagen casings represents an important potential to extend shelf life by the prevention of lipid oxidation and water loss of sausages.
研究领域:
材料科学
·
食品科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Tao Sun,Siying Ren,Jian Hu,Jiatao Zhang,Linze Liu,Jiahui Du,Xing Wang,Yuming Deng,Xueyan Yun,Tungalag Dong
Biodegradable PLLA-based cast films were prepared via melt blending poly(L-lactic acid) (PLLA) with poly(L-lactic acid-co-butylene itaconate) (PLBI), poly(L-lactic acid-co-glycolic acid) (PLGA), and poly(L-lactic acid-co-butylene itaconate-co-glycolic acid) (PLBIGA) copolymers to enhance mechanical, barrier, and degradation properties for dairy packaging applications. Copolymers were synthesized using a one-step melt polycondensation method, and the film properties were effectively controlled by adjusting the blending ratios. All blended films exhibited significantly improved toughness while maintaining high transparency. Specifically, PLLA/PLBIGA20 % film demonstrated a 90.1 % reduction in oxygen transmission rate (OTR) and a 54.3 % reduction in water vapor transmission rate (WVTR) compared to pure PLLA, and PLLA/PLBI20 % film reduced ultraviolet (UV) transmittance to 53 % in the 280–320 nm range. The soil degradation rates of blended films were notably higher than pure PLLA, with distinct degradation mechanisms observed for each copolymer; notably, PLLA/PLBIGA20 % film degraded simultaneously in both amorphous and crystalline regions. Blended films met food-contact safety standards and, when applied to commercial yogurt packaging, effectively preserved lactic acid bacteria viability, outperforming pure PLLA film. These findings demonstrate the strong potential of PLLA-based blended films as sustainable packaging solutions for dairy products.
研究领域:
高分子科学
·
材料工程
·
食品包装技术
·
生物降解
·
可持续材料
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Qi Chen,Wenjie Zong,Qiqi Zhou,Zhengyu Zhou,Yulin Zhan,Qingguo Feng,Chunfeng Hu,Man Jiang
Advanced multifunctional green packaging barrier coating hold profound significance for product preservation and environmental sustainability. Considering the increasing requirement on barrier properties, the lignin nanotubes (LNTs) and polyvinyl alcohol (PVA) were adopted to fabricate coating lamina in this study. The obtained composite barrier coating with 1.0 wt% LNT content presented optimum water vapor transmission rate (WVT) of 12.06 g/m 2 ·24 h, and oxygen transmission rate (OTR) of 0.58 cm 3 /m 2 ·24 h·0.1 MPa, which decreased 57.02 % and 55.38 % respectively compared with pure PVA. The robust hydrogen bonding network between LNT and PVA significantly enhances the composite coating's mechanical properties (38.23 MPa of tensile strength at 2.0 wt% LNT) and thermal stability, which strengthening structure validated by molecular simulations. Crucially, the inclusion of LNT imparts near-complete UV-shielding efficacy and exceptional antimicrobial performance, achieving a 99.30 % inhibition rate against staphylococcus aureus . This composite coating is adaptive for combination with variety base materials in food and medicine packaging, which provides a promising safe and biodegradable barrier coating candidate.
研究领域:
材料科学
·
食品科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
HIGH PERFORMANCE POLYMERS
·
2015
·
IF 1.286
Xia He,Ling-ling Wu,Jia-jun Wang,Tao Zhang,Hui Sun,Ning Shuai
Layer-by-layer (LBL) assembly is an innovative method for fabrication of barrier layer structures on flexible polymers. In this work, two kinds of graphene oxide (GO) multilayer membranes with high barrier properties were prepared by applying LBL on poly(lactic acid) (PLA) films. Nanometer-scale GO multilayer membranes were coated on PLA films and their barrier properties were studied via water vapor and oxygen permeabilities. It turns out that a multilayer (polyethyleneimine (PEI)/GO)n PLA film has excellent oxygen barrier properties, and the oxygen permeability of a four-layer PEI/GO deposition is only 0.98% of the pure PLA film, with unsatisfied water vapor barrier properties. Using PEI/hexadecyltrimethylammonium bromide (CTAB)-modified GO assembling layers on the PLA substrate increased the water contact angle of the multilayer PLA film, and water vapor permeability decreased to 59.25% of the pure PLA film. GO nanosheets with better hydrophobicity can be obtained after being modified by CTAB at the same time, at the expense of partial oxygen barrier properties and transparency. This approach provides a new way to develop multilayer membranes with enhanced barrier performance of PLA films and shows significant interest in packaging applications.
研究领域:
材料科学
·
包装工程
✓ 已验证
产品关联
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
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Xin Xu,Lin-Lin Zhu,Min-Min Dai,Cheng-Cai Zhao,Guang-Xiang Zhang,Yu-Jian Jian,Hua-Tay Lin
Highly transparent polycrystalline Tm 2 O 3 ceramics were successfully fabricated by vacuum sintering at temperatures from 1650 to 1850 °C for 8 h using commercial Tm 2 O 3 and ZrO 2 (1 at%) powders as starting materials. It is the first time that ZrO 2 was reported as a sintering additive to prepare Tm 2 O 3 transparent ceramics. The effects of sintering temperature on the optical transmittance and microstructure of Tm 2 O 3 transparent ceramics were studied. The desired Tm 2 O 3 ceramics with relative density of 99.8% and an average grain size of approximately 9.7 μm were obtained at 1800 °C and the in-line transmittance reached 75% at 880 nm and fluctuated around 80% from 2100 to 2400 nm, respectively. This study demonstrated that Tm 2 O 3 transparent ceramics with higher in-line transmittance and smaller grain size could be prepared by using ZrO 2 as sintering additive at a relatively lower vacuum sintering temperature compared to those already reported in open literatures.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2021
·Vol. 139
·期 12
·51827
·
IF 3.125
Yuan Li,Lu Zhang,Fayong Li,Ke Wang,Xiaoru Wu,Hailu Liu,Bibo Long,Yang Zhao,Dong Xie,Junjia Chen
The hydrophobic modification of cellulose nanofibers (CNF) was carried out via free radical polymerization using methyl methacrylate (MMA) as the monomer to improve the compatibility between CNF and poly lactic acid (PLA). Followed by the preparation of the novel nanocomposites in combination of the organic montmorillonite and the substrate. The resulting nanocomposites were then coated on paper surface using a cast-coating process in an attempt to improve the barrier properties towards water vapor and oxygen. In addition, the composite films are prepared via a solution casting method. The water vapor transmission rate (WVTR), water vapor permeability (WVP), oxygen transmission rate (OTR), and tensile strength of the as-prepared films were systematically measured. The corresponding results demonstrated that the WVTR, WVP and OTR decreased with the addition of a certain content of MCNF in coatings. 0.2 wt% MCNF is the optimum content, showing the best gas resistance and tensile performance. The lowest value of WVTR and WVP are 10.30 g/(m 2 ⋯24 h) and 3306.58 g⋯μm/(m 2 ⋯24 h) for films with 0.2 wt% MCNF added, which is 88.23% and 26.05% lower than that of PLA composite film without NFC.
研究领域:
高分子材料
·
纳米复合材料
·
包装材料
·
表面涂层
·
生物基材料
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Weiwei Li,Haijun Huang,Bingchu Mei,Jinghong Song,Xiaodong Xu
This study aims to investigate the role of Y 3+ ion on microstructure, optical transmittance, and thermal properties of CaF 2 transparent ceramics. Series of nanosized CaF 2 powders doped with different concentration of Y 3+ ion were synthesized by direct precipitation method. XRD , FSEM and TEM results demonstrated that the CaF 2 nanoparticles could be tuned in size through doping of Y 3+ ion. Corresponding CaF 2 transparent ceramics were fabricated by hot-pressed (HP) method. Compared with the undoped CaF 2 sample, the transmittance of the CaF 2 ceramics improved dramatically after doping with Y 3+ ions and reached above 80% at the wavelength of 1200 nm. The effects of Y 3+ ion on the microstructure and thermal properties of CaF 2 transparent ceramics were also investigated. Overall consideration of the transmittance and thermal properties of the samples, the optimal concentration of Y 3+ ion was about 1 at.%.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Wei Liu,Lin Wang,Zipei Zhang,Xiaolai Zhang,Jingcheng Hao
As the improvement of consciousness of environment, a considerable effort has been made to shift from petroleum-based plastics to biodegradable alternatives, especially in the food packaging industry. In this work, we develop an innovative food packaging film by encapsulating quercetin (Que) within β -cyclodextrin ( β -CD) to create β -CD-Que inclusion complexes, which are then dispersed in a matrix of tragacanth gum (TG) and carboxymethyl chitosan (CMCS) using a solution casting technique. β -CD-Que inclusion complexes were characterized using various methods, including 1 H NMR, 2D ROESY and phase solubility testing, to elucidate the interaction between Que and β -CD. ATR–IR, X-ray diffraction, and SEM were employed to confirm the uniform dispersion of β -CD-Que within the macromolecular substrate. The incorporation of β -CD-Que considerably improves the mechanical properties of films, increasing the elongation at break from 13.68 % to 25.74 %. Rheological tests demonstrate that the viscosity of the film-forming complex solution became larger. The films were demonstrated to reduced water vapor and oxygen permeability, possessing remarkable antioxidant capability evidenced by DPPH and ABTS radical scavenging rates of 78.01 % and 99.59 %, respectively. The TG/CMCS/ β -CD-Que composite film shows excellent potential for food packaging and preservation applications.
研究领域:
食品科学
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2017
·
IF 4.233
Feng Xu,Wei Xu,Bingxin Mao,Wenfeng Shen,Yan Yu,Ruiqin Tan,Weijie Song
In this article, silver nanowires (AgNWs) with aspect ratios of 1000 and lengths up to 200 μm are obtained by a modified polyol approach. These very long AgNWs are then utilized to prepare transparent electrodes (TEs) displaying a transmittance of 91.3% at a sheet resistance of 8.6 ohm/sq without any post-treatment. Furthermore, we also demonstrate a process for the cold welding of Ag NWs by simply dipping the AgNWs films into CTAB solutions, resulting in a further improvement for the optoelectronic performance. After the post-treatment, the AgNW-based TEs can achieve a transmittance of 93% at a sheet resistance of 9.5 ohm/sq. In addition, the electric behaviors of AgNW-based TEs are investigated. In the bulk-like regime, for the as-prepared AgNW-based TEs, the Figure of merit (FOM), DC to optical conductivity ratio reaches up to 566.8. After the cold welding process, the DC to optical conductivity ratio can reach even higher values (631.6). In the percolative regime, the as-prepared and welded AgNW-based TEs can achieve Π (FOM with percolative-like behavior) values of 166.8 and 242.1, respectively.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）