Design of polyurethane acrylic antimicrobial films via one-step UV curing

2017 ◽  
Vol 41 (18) ◽  
pp. 9762-9768 ◽  
Author(s):  
Rui Chen ◽  
Ting Li ◽  
Qi Zhang ◽  
Zhongyang Ding ◽  
Piming Ma ◽  
...  
Keyword(s):  
Antimicrobial Properties ◽  
Uv Curing ◽  
Polyurethane Acrylate ◽  
One Step ◽  
Antimicrobial Films

A series of films with excellent antimicrobial properties is prepared from QACs bearing hydrophobic tails and a polyurethane acrylate prepolymer via one-step UV curing.

scholarly journals Antimicrobial Packaging

2021 ◽  
Vol 10 (4) ◽  
pp. 479-484
Author(s):  
Diana Merchan ◽  
Mercy Agila ◽  
Marina Arteaga ◽  
Monica Criollo
Keyword(s):  
Food Quality ◽  
Food Industry ◽  
Low Cost ◽  
Antimicrobial Properties ◽  
Renewable Sources ◽  
Antimicrobial Packaging ◽  
Bibliographic Analysis ◽  
Antimicrobial Films ◽  
Microbial Agents ◽  
Over Time

Food Codex requires safe products and packaging is an important factor to comply with this consumer right, so developing packaging with antimicrobial properties that protect the product by eliminating or inhibiting bacteria or pathogens that cause damage to health is important in the food industry. The objective of this work was to perform a bibliographic analysis of some additives that generate antimicrobial properties in packaging by reviewing some studies that have developed antimicrobial films or also called smart films. Microbial agents have become an important factor in maintaining food quality over time. Biopolymers are an excellent alternative due to their availability, low cost, biodegradability and their origin are from renewable sources.

Self-Stratified Antimicrobial Acrylic Coatings via One-Step UV Curing

2015 ◽  
Vol 7 (33) ◽  
pp. 18467-18472 ◽  
Author(s):  
Jie Zhao ◽  
William Millians ◽  
Saide Tang ◽  
Tiehang Wu ◽  
Lei Zhu ◽  
...  
Keyword(s):  
Uv Curing ◽  
Acrylic Coatings ◽  
One Step

Study on the Synthesis of Waterborne UV Curable Polyurethane Acrylate

2016 ◽  
Vol 703 ◽  
pp. 256-260 ◽  
Author(s):  
Zhen Wen Liu ◽  
Jian Yun He ◽  
Wei Jia Kang ◽  
Xi Dan Luo ◽  
Yu Mei Ding ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Influencing Factors ◽  
Water Solubility ◽  
Uv Curing ◽  
Polypropylene Glycol ◽  
Waterborne Coating ◽  
Uv Curable ◽  
Polyurethane Acrylate ◽  
Hydrophilic Group

Water-brone UV-curable polyurethane acrylate was synthesized based on the toluene diisocynate, polypropylene glycol, dihydroxy methyl acrylic acid and hydroxyethyl acrylate. The structure and the influencing factors on the water solubility and photosensitivity of the waterbrone UV-curable polyurethane acrylate were analyzed. Results show that the water solubility of the resin is enhanced with the increasing of the content of hydrophilic group in the resin. The UV-curing rate of the waterborne coating is good by adding the 819-DW photoinitiator. Triethylamine is a good neutralizer in the waterbrone UV-curable system for having 90% neutralization degree.

scholarly journals Preparation of a Fast Water-Based UV Cured Polyurethane-Acrylate Wood Coating and the Effect of Coating Amount on the Surface Properties of Oak (Quercus alba L.)

Polymers ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1414 ◽  
Author(s):  
Jin Wang ◽  
Huagui Wu ◽  
Ru Liu ◽  
Ling Long ◽  
Jianfeng Xu ◽  
...  
Keyword(s):  
Optimal Parameter ◽  
Uv Curing ◽  
Hydroxyl Groups ◽  
Quercus Alba ◽  
Coating Properties ◽  
Wood Coating ◽  
Polyurethane Acrylate ◽  
Wood Coatings ◽  
Wood Flooring ◽  
Water Based

A fast water-based ultraviolet light (UV) curing polyurethane-acrylate (PUA) wood coating was prepared in the laboratory, and applied on oak (Quercus alba L.) at different coating amounts. The PUA wood coating can be fast cured within 22 min, which highly improved the drying speed compared to normal water-based wood coatings (often higher than 35 min). The coating amounts affected the coating properties after curing on oak. With the increase of coating amount, the adhesion, hardness and gloss value of surface increased to different extents. Meanwhile, the surface of sample became smooth gradually because the voids of the oak were filled. Thus, higher coating amount resulted in better coating properties. However, no significant increase of penetration depth was found. During curing, the hydroxyl groups of the wood reacted with the coating. The optimal parameter in this study was the coating amount of 120 g/m2, where the adhesion reached 1 (with 0–5% cross-cut area of flaking along the edges), with the hardness of 2H and the gloss of 92.56°, which met the requirement of Chinese standard GB/T 18103–2013, and could be used for engineered wood flooring.

Chitosan based antimicrobial films for food packaging applications

e-Polymers ◽  
2008 ◽  
Vol 8 (1) ◽  
Author(s):  
Shipra Tripathi ◽  
G. K. Mehrotra ◽  
P. K. Dutta
Keyword(s):  
Antimicrobial Activity ◽  
Food Packaging ◽  
Antimicrobial Properties ◽  
Food Preservation ◽  
Pathogenic Microorganisms ◽  
Packaging System ◽  
Antimicrobial Packaging ◽  
Wide Range ◽  
Chitosan Films ◽  
Antimicrobial Films

AbstractAntimicrobial packaging is one of the most promising active packaging systems. Antimicrobial packaging is the packaging system that is able to kill or inhibit spoilage and pathogenic microorganisms that are contaminating foods. A tremendous effort has been made over the last decade to develop and test films with antimicrobial properties to improve food safety and shelf life. For food preservation, chitosan films are very effective. Chitosan has widely been used in antimicrobial films, to provide edible protective coating, dipping and spraying for the food products due to its antimicrobial properties. Chitosan can be formed into fibers, films, gels, sponges, beads or nanoparticles. Chitosan films have been used as a packaging material for the quality preservation of a variety of food. Chitosan has great potential for a wide range of applications due to its biodegradability, biocompatibility, antimicrobial activity, non-toxicity and versatile chemical and physical properties. The present review outlines the preparation and antimicrobial activity of chitosan based films.

Research on the Modification of Waterborne UV-Curable Polyurethane Acrylate

2013 ◽  
Vol 864-867 ◽  
pp. 698-701
Author(s):  
Jian Yun He ◽  
Yong Liu ◽  
Li Chen He ◽  
Qiang Wang
Keyword(s):  
Uv Curing ◽  
Acrylic Resin ◽  
Ethyl Acrylate ◽  
Toluene Diisocyanate ◽  
Polypropylene Glycol ◽  
Hyperbranched Polyester ◽  
Uv Curable ◽  
Polyurethane Acrylate ◽  
Overall Performance ◽  
Influent Factors

In this study, waterborne UV-curable polyurethane acrylic resin was synthesized using polypropylene glycol, toluene diisocyanate, dimethylol propionic acid and hydroxyl ethyl acrylate, and modified by hyperbranched polyester acrylate. The influent factors on hydrophilic properties and UV curing speed of the resin were discussed, and the modified resin has compared with that of unmodified resin. Results showed that the overall performance and UV curing speed of the resin modified by hyperbranched polyester was greatly enhanced, the hydrophilic property of the resin was proportional to hydrophilic group content.

scholarly journals UV Curable Coatings Based on Urethane Acrylates Containing Eugenol and Evaluation of Their Antimicrobial Activity

Coatings ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1556
Author(s):  
Paulina Bednarczyk ◽  
Agnieszka Wróblewska ◽  
Agata Markowska-Szczupak ◽  
Paula Ossowicz-Rupniewska ◽  
Małgorzata Nowak ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Protective Coatings ◽  
Antimicrobial Properties ◽  
Uv Curing ◽  
Industrial Applications ◽  
High Reactivity ◽  
Uv Curable ◽  
Gram Positive Bacteria ◽  
Wide Range ◽  
Short Time

This work presents studies on the obtaining of UV-curable coatings with antimicrobial activity. Urethane acrylates (UAs) have excellent physicochemical properties including high reactivity in systems with radical photoinitiators in the presence of UV radiation and good balance between hardness and flexibility in the formed coatings. At the same time, eugenol is well known as the compound hindering the growth of various microorganisms. Hence, the materials obtained by the modification of UA resins with eugenol can be used to protect various surfaces, especially against microorganisms. This study aimed to examine the influence of the amount of eugenol on the chemical, physical, thermal, and mechanical properties of the obtained UA coatings and find the conditions at which the optimal properties for industrial applications such coatings can be achieved. These materials were successfully obtained. Taking into account that eugenol is a very cheap reactant, and it can be obtained from natural sources by the simple distillation method, the proposed method combined the good points of obtaining protective coatings by UV curing with the utilization of vegetable, renewable reactants (biomass), such as components giving special properties to these materials, in this case, antimicrobial properties. In this study, photoreactive coatings with antimicrobial properties for the following microorganisms: fungi (C. albicans), Gram-positive bacteria (S. epidermidis) as well as Gram-negative bacteria (E. coli), were obtained. The obtained coatings were cured over a short time. They were colorless and characterized by a wide range of properties and applications.

scholarly journals Effect of Graphene Carbon Nitride on Ultraviolet-Curing Coatings

Materials ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 153 ◽  
Author(s):  
Zusheng Hang ◽  
Huili Yu ◽  
Yan Lu ◽  
Xu Huai ◽  
Lingpeng Luo
Keyword(s):  
Carbon Nitride ◽  
Composite Coatings ◽  
Uv Curing ◽  
X Ray Diffraction ◽  
Ultraviolet Curing ◽  
Mechanical Mixing ◽  
Pencil Hardness ◽  
Gel Content ◽  
Polyurethane Acrylate ◽  
Anaerobic Environment

Graphene carbon nitride (g-C3N4) was successfully prepared by semi-closed pyrolysis and then incorporated into the ultraviolet (UV)-curing system to synthesize different specimens of g-C3N4-hybridized UV-curing (g-C3N4/UV) coatings. The apparent appearance and dispersity g-C3N4 were characterized through X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR). The influence of the curing speed and mechanical properties was also tested. The dispersion level of g-C3N4 can be kept less than 1 μm by mechanical mixing. The pencil hardness of composite coatings could be 6H while the adhesion based on glass could be 1 level. The degree of curing of the coating could be obviously improved by the addition of g-C3N4, leading to a 7 percent increase of the gel content. Additionally, the decomposition of hard segments of polyurethane acrylate could be avoided by the use of g-C3N4 resulting in an increasing stability to heat. We found the gel content in an aerobic environment was lower than that in an anaerobic environment. On this basis, the function and mechanism of g-C3N4 was investigated in detail and methods to eliminate the O2 were proposed.

Photoluminescent and antimicrobial properties of silver‐doped indium hydroxide synthesized by one‐step microwave‐assisted hydrothermal method

2018 ◽  
Vol 16 (2) ◽  
pp. 471-480 ◽  
Author(s):  
Nivaldo Freire Andrade Neto ◽  
Mara T. S. Tavares ◽  
Erik A. C. Ferreira ◽  
Ana I. L. Sales ◽  
Lucymara F. A. Lima ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Antimicrobial Properties ◽  
Indium Hydroxide ◽  
Microwave Assisted ◽  
One Step
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