Non-Woven Barrier Properties of External Layer for Wound Matrix

2021 ◽  
Vol 1163 ◽  
pp. 59-72
Author(s):  
Marwa Atif Ali
Keyword(s):  
Activated Carbon ◽  
Barrier Properties ◽  
Electrostatic Charge ◽  
External Layer ◽  
Layer System ◽  
Medical Products ◽  
Wound Matrix ◽  
Barrier Performance ◽  
Radar Chart ◽  
Performance Results

Non-woven is commonly used in disposable medical products especially after external surgeries to reduce the infection transfer and improves wound healing. In addition, low its production cost. This study is aimed to engineer the external layer of the wound matrix from non-woven webs and investigation from its barrier performance for fluids leakage, biological odor, and electrostatic charge. The external layer of matrix was suggested to consist of two or three sub-layers from 100% polyester and viscose/polyester (70:30)%. These webs were enhanced by activated carbon (AC) and powdered aloe leaves (A). The final produced samples were evaluated by the radar chart area for the tested properties, in order to determine the best samples produced for the external layer system of the wound matrix. The final samples produced from two and three sub-layers, which were enhanced with powder aloe leaves presented the best performance results, followed by the sample produced from three sub-layers that enhanced with activated carbon, and powdered aloe leaves together. Finally, the activated carbon and powdered aloe leaves that used for enhancing application had a significant effect on the odor absorption with different behavior for each one. The activated carbon absorbed the odor and appeared in its particles. While powdered aloe leaves were absorbed more odor than activated carbon, but it concealment the odor.

Barrier properties of cellulose nanofiber film as an external layer of particleboard

2019 ◽  
Vol 21 (10) ◽  
pp. 2073-2079
Author(s):  
Aneta Gumowska ◽  
Grzegorz Kowaluk ◽  
Jalel Labidi ◽  
Eduardo Robles
Keyword(s):  
Barrier Properties ◽  
Cellulose Nanofiber ◽  
External Layer ◽  
Nanofiber Film

scholarly journals Effect of silane functionalized graphene prepared by a supercritical carbon dioxide process on the barrier properties of polyethylene terephthalate composite films

RSC Advances ◽  
2019 ◽  
Vol 9 (38) ◽  
pp. 21903-21910 ◽  
Author(s):  
Jiajia Wei ◽  
Shigui Peng ◽  
Bin Xue ◽  
Zhao Yang ◽  
Shuhao Qin ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Polyethylene Terephthalate ◽  
Composite Films ◽  
Barrier Properties ◽  
Coupling Agents ◽  
Functionalized Graphene ◽  
Silane Coupling Agents ◽  
Silane Coupling ◽  
Barrier Performance

Adding silane modified GNs prepared by a Sc-CO2 process into a PET matrix could greatly enhance the barrier properties of the GNs/PET composites.The barrier performance of GNs/PET composites was greatly enhanced by modifying GNs with silane coupling agents via Sc-CO2 process.

scholarly journals Hybrid Biocomposites Based on Poly(Lactic Acid) and Silica Aerogel for Food Packaging Applications

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4910 ◽  
Author(s):  
Alejandro Aragón-Gutierrez ◽  
Marina P. Arrieta ◽  
Mar López-González ◽  
Marta Fernández-García ◽  
Daniel López
Keyword(s):  
Thermal Stability ◽  
Lactic Acid ◽  
Silica Aerogel ◽  
Food Packaging ◽  
Mechanical Performance ◽  
Composite Films ◽  
Barrier Properties ◽  
Extrusion Process ◽  
Poly Lactic Acid ◽  
Barrier Performance

Bionanocomposites based on poly (lactic acid) (PLA) and silica aerogel (SiA) were developed by means of melt extrusion process. PLA-SiA composite films were plasticized with 15 wt.% of acetyl (tributyl citrate) (ATBC) to facilitate the PLA processability as well as to attain flexible polymeric formulations for films for food packaging purposes. Meanwhile, SiA was added in four different proportions (0.5, 1, 3 and 5 wt.%) to evaluate the ability of SiA to improve the thermal, mechanical, and barrier performance of the bionanocomposites. The mechanical performance, thermal stability as well as the barrier properties against different gases (carbon dioxide, nitrogen, and oxygen) of the bionanocomposites were evaluated. It was observed that the addition of 3 wt.% of SiA to the plasticized PLA-ATBC matrix showed simultaneously an improvement on the thermal stability as well as the mechanical and barrier performance of films. Finally, PLA-SiA film formulations were disintegrated in compost at the lab-scale level. The combination of ATBC and SiA sped up the disintegration of PLA matrix. Thus, the bionanocomposites produced here show great potential as sustainable polymeric formulations with interest in the food packaging sector.

Butylamino-functionalized cellulose nanocrystal films: barrier properties and mechanical strength

RSC Advances ◽  
2015 ◽  
Vol 5 (20) ◽  
pp. 15140-15146 ◽  
Author(s):  
Miikka Visanko ◽  
Henrikki Liimatainen ◽  
Juho Antti Sirviö ◽  
Kirsi S. Mikkonen ◽  
Maija Tenkanen ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Cellulose Nanocrystals ◽  
Barrier Properties ◽  
Cellulose Nanocrystal ◽  
Barrier Performance ◽  
Nanocrystal Films

Self-standing films were fabricated from butylamino-functionalized cellulose nanocrystals and tested for their mechanical strength and barrier performance.

scholarly journals Physical Properties of Starch/Powdered Activated Carbon Composite Films

Polymers ◽  
2021 ◽  
Vol 13 (24) ◽  
pp. 4406
Author(s):  
Anita Kwaśniewska ◽  
Michał Świetlicki ◽  
Adam Prószyński ◽  
Grzegorz Gładyszewski
Keyword(s):  
Mechanical Properties ◽  
Activated Carbon ◽  
Water Vapor ◽  
Water Solubility ◽  
Composite Films ◽  
Water Vapor Permeability ◽  
Barrier Properties ◽  
Carbon Composite ◽  
Powdered Activated Carbon ◽  
Vapor Permeability

In the present study, starch/powdered activated carbon composite films were prepared by incorporating various amounts of powdered activated carbon (PAC)—1–5, 10, and 15 %—into a starch matrix, using the solvent casting method. The effect of PAC addition on the biopolymer film was investigated. The mechanical properties were examined by ultra-nanoindentation, nanoscratch, and micro-tensile tests. Since the mechanical properties of biopolymer films are correlated with their structure, the effect of PAC addition was tested using X-ray diffraction. The surface parameters morphology and wettability were analyzed by atomic force microscopy (AFM) and contact angle measurements. The barrier properties were examined by determining water vapor permeability and the water solubility index. The obtained results did not show a monotonic dependence of the mechanical parameters on PAC content, with the exception of the maximum strain, which decreased as the amount of the additive increased. The visible effect of PAC addition was manifested in changes in the adhesive force value and in water vapor permeability (WVP). The barrier properties decreased with the increase of the filler content.

Influence of Gamma and Electron Radiation on the Strength Characteristics of Nonwoven SMS Materials Based on Polypropylene

2021 ◽  
Vol 899 ◽  
pp. 172-178
Author(s):  
Rezeda Yu. Galimzyanova ◽  
Maria S. Lisanevich ◽  
Yuri N. Khakimullin
Keyword(s):  
Tensile Strength ◽  
Ionizing Radiation ◽  
Barrier Properties ◽  
Strength Characteristics ◽  
Radiation Sterilization ◽  
Electron Radiation ◽  
Medical Products ◽  
Absorbed Doses ◽  
Nonwoven Materials ◽  
Important Health

Radiation sterilization is widely used to sterilize nonwoven SMS medical products. SMS materials have improved filtering and barrier properties, low bacteriopermeability and, due to these properties, are indispensable for medicine. They are used to make such important health care products as disposable surgical clothing and underwear. As a result of the research carried out, the effect of gamma and electron radiation, in the range of absorbed doses from 15 to 25 kGy, on the strength characteristics of nonwoven SMS materials based on polypropylene with a surface density of 35, 40, 50 g/cm2 was studied. It has been established that the strength characteristics (tensile strength, tensile strength, and tear strength) of nonwoven materials decrease after exposure to ionizing radiation. The higher the density of the material, the more its characteristics decrease after radiation sterilization. It was also found that gamma radiation, due to its nature, has a stronger effect on nonwoven materials based on polypropylene, and leads to a stronger decrease in strength characteristics. In general, for products sterilized by ionizing radiation and made from SMS materials, it is important to control the strength characteristics, primarily, the tensile strength in the transverse direction of the web stuff.

scholarly journals Improving the Barrier Properties of Packaging Paper by Polyvinyl Alcohol Based Polymer Coating—Effect of the Base Paper and Nanoclay

Polymers ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1334
Author(s):  
Zhenghui Shen ◽  
Araz Rajabi-Abhari ◽  
Kyudeok Oh ◽  
Guihua Yang ◽  
Hye Jung Youn ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Polymer Coating ◽  
Water Resistance ◽  
Barrier Properties ◽  
Base Paper ◽  
Good Ability ◽  
Barrier Performance ◽  
Cellulosic Paper ◽  
Packaging Paper ◽  
Coating Formulation

The poor barrier properties and hygroscopic nature of cellulosic paper impede the wide application of cellulosic paper as a packaging material. Herein, a polyvinyl alcohol (PVA)-based polymer coating was used to improve the barrier performance of paper through its good ability to form a film. Alkyl ketene dimer (AKD) was used to enhance the water resistance. The effect of the absorptive characteristics of the base paper on the barrier properties was explored, and it was shown that surface-sized base paper provides a better barrier performance than unsized base paper. Nanoclay (Cloisite Na+) was used in the coating formulation to further enhance the barrier performance. The results show that the coating of PVA/AKD/nanoclay dispersion noticeably improved the barrier performance of the paper. The water vapor transmission rate of the base paper was 533 g/m2·day, and it decreased sharply to 1.3 g/m2·day after the application of a double coating because of the complete coverage of the base paper by the PVA-based polymer coating. The coated paper had excellent water resistance owing to its high water contact angle of around 100°. The grease resistance and mechanical properties of the base paper also improved after coating. This work may provide inspiration for improving the barrier properties of packaging paper through the selection of a suitable base paper and coating formulation.

Effect of Organoclay Dispersion on the Barrier Performance and Mechanical Strength of EVA Clay Nanocomposites

2013 ◽  
Vol 747 ◽  
pp. 15-18
Author(s):  
Wilson Runcy ◽  
Kumar S. Anil ◽  
Thomas Sabu
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Composite Membranes ◽  
Barrier Properties ◽  
Superior Performance ◽  
Clay Nanocomposites ◽  
Elongation At Break ◽  
Barrier Performance ◽  
Poly Ethylene ◽  
Cloisite 15A

Poly (ethylene-co-vinyl acetate) (EVA)/clay nanocomposites with different clay loadings were prepared. The transport of gases (oxygen and nitrogen) through the composite membranes was investigated. These studies revealed that the incorporation of nanoclays in the polymer increased the efficiency of the membranes toward barrier properties. It was also found that the barrier properties of the membranes decreased with clay loadings. This is mainly due to the aggregation of clay at higher loadings. The mechanical properties of the nanocomposites were analysed. Samples with 5 wt % Cloisite 15A clay showed superior performance in tensile strength and elongation at break.

scholarly journals Mechanical and Barrier Properties of Potato Protein Isolate-Based Films

Coatings ◽  
2018 ◽  
Vol 8 (2) ◽  
pp. 58 ◽  
Author(s):  
David Schäfer ◽  
Matthias Reinelt ◽  
Andreas Stäbler ◽  
Markus Schmid
Keyword(s):  
Whey Protein ◽  
Functional Properties ◽  
Barrier Properties ◽  
Whey Protein Isolate ◽  
Protein Isolate ◽  
Cross Linking ◽  
Potato Protein ◽  
Water Sorption Isotherm ◽  
Barrier Performance ◽  
Cross Links

Potato protein isolate (PPI) was studied as a source for bio-based polymer films. The objective of this study was the determination of the packaging-relevant properties, including the mechanical properties and barrier performance, of casted potato protein films. Furthermore, the films were analyzed for cross-linking properties depending on the plasticizer concentration, and compared with whey protein isolate (WPI)-based films. Swelling tests and water sorption isotherm measurements were performed to determine the degree of swelling, the degree of cross-linking, and the cross-linking density using the Flory–Rehner approach. The effects of different plasticizer types and contents on compatibility with potato protein were studied. Glycerol was the most compatible plasticizer, as it was the only plasticizer providing flexible standalone films in the investigated concentration range after three weeks of storage. Results indicated that increasing glycerol content led to decreasing cross-linking, which correlated in an inversely proportional manner to the swelling behavior. A correlation between cross-linking and functional properties was also reflected in mechanical and barrier characterization. An increasing number of cross-links resulted in higher tensile strength and Young’s modulus, whereas elongation was unexpectedly not affected. Similarly, barrier performance was significantly improved with increasing cross-linking. The overall superior functional properties of whey protein-based films were mainly ascribed to their higher percentage of cross-links. This was primarily attributed to a lower total cysteine content of PPI (1.6 g/16 g·N) compared to WPI (2.8 g/16 g·N), and the significant lower solubility of potato protein isolate in water at pH 7.0 (48.1%), which was half that of whey protein isolate (96%). Comparing on an identical glycerol level (66.7% (w/w protein)), the performance of potato protein isolate was about 80% that of whey protein isolate regarding cross-linking, as well as mechanical and barrier properties.

scholarly journals On the Use of Persian Gum for the Development of Antiviral Edible Coatings against Murine Norovirus of Interest in Blueberries

Polymers ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 224
Author(s):  
Niloufar Sharif ◽  
Irene Falcó ◽  
Antonio Martínez-Abad ◽  
Gloria Sánchez ◽  
Amparo López-Rubio ◽  
...  
Keyword(s):  
Water Vapor ◽  
Antiviral Activity ◽  
Water Vapor Permeability ◽  
Allyl Isothiocyanate ◽  
Barrier Properties ◽  
Vapor Permeability ◽  
Edible Coatings ◽  
Murine Norovirus ◽  
Viral Contamination ◽  
Barrier Performance

In the last decades, berries have been identified as important vehicles for the transmission of foodborne viruses and different strategies are being explored to eliminate or reduce viral contamination in these fruits. The aim of this work was to develop novel edible coatings with antiviral properties for inactivating and reducing murine norovirus (MNV). Firstly, the effect of gelatin (G) addition on Persian gum (PG) films was studied in terms of microstructural, mechanical, optical, and water barrier properties. The following PG:G ratios were considered: 100:0, 75:25, 50:50, 25:75, and 0:100. Microstructure analysis revealed the compatibility of both hydrocolloids since no phase separation was observed. The addition of G to PG films provided stiffer and more deformable films than pure PG, with lower water vapor permeability values. Specifically, films prepared with 50:50 PG:G ratio presented better mechanical and barrier performance. Interestingly, pure PG showed antiviral activity on murine norovirus, probably due to the presence of some impurities (mainly tannins). Adding allyl isothiocyanate (AITC) enhanced the PG antiviral activity at refrigerated temperatures in blueberries, not being affected by the AITC concentration. This effect was not observed at ambient temperature, probably due to the volatilization of AITC.

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