PROGRESS IN ORGANIC COATINGS
·
2023
·
IF 6.6
Xiangjie Chen,Bin Xiao,Yutian Yang,Yu Jiang,Xiaoming Song,Fushan Chen,Wentao Wang,Jianqing Wu,Yao Meng
Paper-based composite films have demonstrated significant potential in the field of packaging materials. However, the gas barrier properties of these films have been found to be less than satisfactory, primarily due to the inherent porosity and hydrophilic nature of cellulose-based paper. Consequently, the challenge of enhancing the gas barrier performance, particularly in relation to oxygen and water vapor , remains a formidable obstacle. In this study, drawing inspiration from the well-established multilayer composite model, which incorporates both organic and inorganic layers, an efficient strategy has been devised to enhance the gas barrier performance of paper-based packaging materials. The organic barrier layers in this approach utilize polyvinyl alcohol and polyacrylate . Meanwhile, the critical inorganic barrier layer is composed of functionalized SiO 2 @polydopamine nanoparticles (SiO 2 @PDA NPs). Importantly, due to the isotropic nature of the SiO 2 @PDA NPs, concerns related to the orientation control and exfoliation of 2D layered materials are alleviated within this system. The introduction of a crosslinker, 3-aminopropyl triethoxysilane, serves to bridge the gap between SiO 2 @PDA NPs, facilitating the tight concatenation of NPs through Schiff base or Michael addition reactions. Utilizing coating technology , a paper-based multilayer film was fabricated. As a result, the oxygen transmission rate of the composite film was substantially reduced to 0.3077 cm 3 /cm 2 ·24 h·0.1 MPa, and the water vapor transmission rate was lowered to 4.1109 g/m 2 ·24 h. Significantly, these composite films exhibit exceptional water resistance and mechanical properties, rendering them highly suitable for the packaging of a wide range of sensitive products, including food items, pharmaceuticals, electronic devices, and other gas-sensitive products.
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
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Qingyi Xie,Junyi Zhou,Haiquan Sun,Jiamei Fu,Minghui Cui,Xiaolin Wang,Fenglong Li,Jin Zhu,Jing Chen
Bio-based polyurethane materials with good barrier properties are gaining increasing attention for their potential in alleviating energy shortages. In this work, natural lignin first underwent a two-step esterification modification using succinic acid (SA) and 6-mercapto-1-hexanol (6-MCH) modified castor oil. The resulting modified lignin exhibited both flexibility and high reactivity. It was further reacted with hexamethylene diisocyanate (HDI) to synthesize a high-bio-based-content polyurethane material (>70 %) with excellent UV resistance and barrier properties. The incorporation of modified castor oil significantly enhanced the mechanical properties of the lignin-based polyurethane and improved its water vapor barrier performance due to its intrinsic hydrophobicity. When the molar ratio of hydroxyl groups in the modified castor oil to carboxyl groups in the modified lignin was 5:1, the resulting polyurethane (5:1-PU) DEMONSTRATED a tensile strength of 10.0 ± 0.1 MPa, toughness of 468.3 ± 3.3 MJ·m −3 , a water contact angle of 98.3°, and a water vapor transmission rate (WVTR) of 2.10 ± 0.39 g/m 2 ·24h. This approach, which grafts lignin with castor oil, enables the high-value utilization of lignin and offers a sustainable pathway for developing bio-based barrier materials as alternatives to petroleum-based films.
研究领域:
高分子材料
·
生物医学工程
·
可持续材料
·
功能材料
·
绿色化学
✓ 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
JOURNAL OF MEMBRANE SCIENCE
·
2017
·
IF 6.035
Jiajun Fan,Wei Zhou,Qing Wang,Zhaojie Chu,Lanqiong Yang,Lei Yang,Jian Sun,Ling Zhao,Jianmei Xu,Yujun Liang,Zhiquan Chen
Incorporation of nanoplatelets is known to be effectively in the reduction of gas permeation of polymer membranes, which has been typically attributed to the torturous path effect. However, the measured water vapor transmission rates (WVTR) from the poly(vinyl alcohol) (PVA)/graphene oxide (GO) nanocomposite membranes are found to be smaller than the theoretical values calculated by the Bharadwaj model based on the torturous path effect. This discrepancy is indicative of the existence of other structural factors responsible for the WVTR that are rarely discussed in literature. In this work, the positron annihilation lifetime spectroscopy (PALS), a widely recognized method for characterization of the atomic-scale microstructure of polymers, is employed herein to study the free volume of the PVA/GO composite membranes . The free volume size of the composite membrane decreases with increasing GO contents, and the fractional free volume (FFV) decreases with the increase of annealing temperature. Strong dependence of the WVTR of PVA/GO on the FFV and crystallinity has been revealed, indicating that, along with the nanoplatelets-induced torturous path effect, they are important factors affecting the water vapor permeation of polymer nanocomposite membranes.
研究领域:
材料科学
·
聚合物科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2020
·
IF 4.192
Qi Li,Quan Ma,Yilan Wu,Yan Li,Bin Li,Xiaogang Luo,Shilin Liu
As bio-based food packaging materials promise a more sustainable future, this work fabricated edible oleofilms by casting beeswax-in-water Pickering emulsions, which were formed by the physical hybrid particles of bacterial cellulose nanofibrils (BCNFs) and carboxymethyl chitosan (CCS) (BC/CCS). The emulsion droplet size was varied from 4 to 9 μm, and the emulsion index (EI) was all up to 100%. The obtained emulsions exhibited excellent long-term stability, and there was no change in the EI (100%) after the storage of the emulsion for 3 months. Moreover, the environmental temperature had almost no impact on the droplet size and EI of the emulsion. The mechanical properties of the oleofilms were significantly improved by enhancing the content of BC/CCS. There was also a visual reduction in the water vapor permeability (WVP) value, which was lower than 1.1 × 10–7 g·m–1·h–1·Pa–1. Furthermore, the obtained oleofilms exhibited a notable improvement in surface hydrophobicity, and surprisingly, it could be easily redispersed into water to recover back to the emulsion state without additional high energy mixing. This suggested that this edible oleofilm was prepared by a fully green method by casting Pickering emulsions stabilized by BC/CCS and could extend its application for the development of food-grade coating materials.
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
ACS Sustainable Chemistry & Engineering
·
2023
·
IF 8.4
Fengsong Liu,Chenghao Li,Caiwei Liu,Jialin Zheng,Kaiyue Bian,Hong Bai,Yan Zhang,Yifang Cao,Yijia Xie,Xinglong Xiao
The widespread utilization of the polyvinyl alcohol (PVA) film is significantly hindered by two prominent limitations: water sensitivity and low gas permeability. In this work, a novel PVA film coated with monoglyceride (MG) and filled with diatomaceous earth (DS) was fabricated to address these issues. Scanning electron microscopy and 3D morphology revealed that the Ra value improved from 3.72 to 7.21 μm. Also, the successful coating of MG was confirmed by X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. Pull-off adhesion tests proved that the film containing 0.5 g of MG exhibited the highest adhesive properties. The PVA/MG/DS film had the highest contact angle of 122.32°, the lowest water vapor permeability of 7.19 g/m2/day, and the lowest oxygen permeability of 55.35 (cm3 × cm × cm2 × s × Pa)−1. Moreover, this type of film exhibited higher light transmittance, better thermal stability, and greater mechanical properties than pure PVA film. Consequently, the PVA/MG/DS film displayed superior performance in preserving the freshness and quality of fresh-cut mango, with a lowest weight loss of 4.48%, a lowest total soluble solids of 7.98%, a greatest titratable acidity of 0.88%, a highest ascorbic acid of 76.67 mg/100 g, and best sensory quality.
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
FOOD HYDROCOLLOIDS
·
2024
·
IF 11
Yilan Wu,Yan Li,Bin Li,Yuehan Wu,Shilin Liu
In this study, beeswax (BW)/soybean oil (SO) mixed lipid phase and bacterial cellulose nanofibrils (BCNF)/gelatin (GLT) hybrid stabilizers were utilized to prepare O/W emulsions, which were applied as templates to fabricate solid lipid particle (SLP) dispersion for further preparing oleofilms. As the BW content (based on lipid phase) increased from 10 to 40 wt%, the SLP size became smaller, and the obtained oleofilms showed significant variations in the structure that more lipid crystals distributed on the film surface and film exhibited increased crystallinity. The film prepared with SLP with 40 wt% BW (based on lipid phase) had the best light barrier property, largest contact angle (96 ± 1 o ) and lowest water vapor permeability (WVP, 4.4 ± 0.1 × 10 −8 g m −1 ·h −1 ·Pa −1 ), but the lowest tensile strength (1.53 ± 0.11 MPa) and elongation at break (2.32 ± 0.16%). The SLP dispersion was further ultrasonically treated (SLP-U) for improving the physical property of oleofilms. Compared to SLP oleofilms, SLP-U oleofilms possessed more uniform micro-structure, better transparency, and higher mechanical strength, revealing that SLP-U had higher adhesion with biopolymer matrix. The increase of BCNF ratio contributed to the significant decrease in the SLP-U size, improved the oleofilm contact angle, but reduced the film mechanical strength. This study provided the regulation method of acceptable barrier and mechanical properties for oleofilm by properly tailoring the lipid particle property.
研究领域:
食品科学
·
材料科学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
·
2014
·Vol. 49
·期 12
·2592-2601
·
IF 1.354
Wen-Xi Yu,Zhi-Wei Wang,Chang-Ying Hu,Lei Wang
Summary In this study, the low methoxyl pectin-carboxymethyl cellulose-based montmorillonite (LMP-CMC-MMT, LCM) nanocomposite films with nine ratios of LMP:CMC (from 10:0 to 0:10) and different MMT contents (1–8 wt%) were prepared. The mechanical properties, colour, opacity and water vapour permeability (WVP) of composite films were investigated. The maximum of tensile strength (TS) of composite films was 39.85 ± 2.51 MPa at LMP:CMC ratio of 4:6 and 4 wt% MMT (LCM47), which indicated the formation of hydrogen bonds between MMT and LMP-CMC. The reduction of WVP of the LCM47 composite film was 333% of that of the CMC film due to the tortuous path caused by MMT incorporation. LCM composite films had the higher b *- and Δ E *-values and lower L *-values in comparison with LMP-CMC (LC) composite films. The LCM composite films showed a decrease in transparency as MMT content increased.
研究领域:
食品科学
·
材料科学
✓ 已验证
DOI
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
Sustainable Chemistry and Pharmacy
·
2023
·
IF 6
Liucheng Meng,Jianfeng Xi,Huiyang Bian,Huining Xiao,Weibing Wu
Nanocellulose films have excellent oxygen barrier properties, but their water vapor barrier properties and water resistance are poor. Natural rubber latex (NRL) has been used as a composite material to improve the hydrophobic properties of 2,2,6,6-tetramethylpiperidin-1-oxo (TEMPO) oxidized nanocellulose fibers (TOCNFs) because of its natural core-shell structure that allows for homogeneous mixing with hydrophilic polymers in aqueous solutions. The exposure of the internal hydrophobic isoprene molecular chains of NRL during the drying process allows the composite film to have greatly improved water resistance and excellent water vapor and oxygen barrier properties. The water vapor permeability (WVP) and oxygen permeability (OP) of the film were as low as 6.07 × 10 −13 g m/m 2 ·s·Pa and 3.11 × 10 −15 cm 3 cm/cm 2 ·s·Pa, respectively. The good water resistance of the composite film makes the wet tensile strength of the film up to 15.87 MPa, which reaches 71.69% of the dry tensile strength. In addition, the high ductility of NRL makes the composite film good toughness, and its elongation at break can reach about three times that of most nanocellulose-based films. Strawberry preservation experiments have shown that it can effectively slow down the deterioration of strawberries, extending their shelf life from 2 days to 7 days.
研究领域:
材料科学
·
食品科学
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2022
·
IF 11.322
Shuo Shi,Hanbai Wu,Chuanwei Zhi,Jieqiong Yang,Yifan Si,Yang Ming,Bin Fei,Jinlian Hu
An ideal wound dressing should include excellent physical property, comfortability, and protection. Critical properties, such as robust tensile stress , high water vapor transmission rate (WVTR), air permeability (AP), waterproofness, biocompatibility, and particle filtration efficiency (PFE) should be covered. However, previous research regarding wound dressings omitted some of these elements, leading to the fact that wound healing management was ineffective. Herein, inspired by human skin structure, we designed a skin-like wound dressing with a hydrophilic healing interlayer and a hydrophobic protective surface based on polyvinylidene fluoride. The prepared membrane not only possesses an excellent physical property, comfortability, and protective function but also can accelerate cell migration and the wound healing process. Particularly, the dressing demonstrates robust tensile stress of 25.9 MPa, a toughness of 12.2 MJ/m 3 , a typical WVTR over 17.4 kg/(m 2 ·d), a high AP of 4.2 mL/s, a high PFE of 99.9%, excellent biocompatibility, and a more rapid scratch healing rate than the commercial product, Nexcare. The dressing is proven to be similar to human skin (i.e., tensile strength of 21.6 ± 8.4 MPa and failure strain of 54 ± 17%). We believe that the achieved scalable nanostructured membrane can make meritorious contributions to materials science and biomedical engineering .
研究领域:
材料科学
·
生物医学工程
·
皮肤修复
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2024
·Vol. 31
·期 12
·1-11
·
IF 2.6
Wu Peipei,Zhao Yuchang,Zhang Yuwen,Shen Qingyue,Hu Shuaishuai,Chen Shuangjun
Intrinsic moisture permeability of bio-based polymer cellulose diacetate (CDA) is not sufficient for some requirements. Herein, isophorone diisocyanate (IPDI) modified polyethylene glycol (IPEG200) was served as a reactive plasticizer to enhance the water vapor permeability (WVP) of CDA films without plasticizer migration problems. The performances of CDA films were further improved by adding hydrophilic nanometer Al 2 O 3 fillers. Fourier transform infrared spectroscopy (FTIR) was used to the synthesis processes of the prepolymers and their reaction with CDA chains. The crosslinking reaction was indicated by monitoring the gel content. When IPEG200 is 9.66 phr and Al 2 O 3 filler is 5 phr, the WVP is raised to 8.9 × 10 −13 g·cm/cm 2 ·s·Pa, which is much higher than CDA’s. WVP 14.2 × 10 −13 g·cm/cm 2 ·s·Pa of CDA film can be obtained by adding 60 phr PEG600 and 25 phr Al 2 O 3 when using IPEG200 as the compatibilizer. This study provides a simple, feasible, low-cost method for preparing high moisture permeable film by reactive plasticizers.
研究领域:
材料科学
·
高分子科学
·
化学工程
✓ 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）