Thermoplastic Elastomers Containing Zinc Oxide as Antimicrobial Additive Under Thermal Accelerated Ageing

Simões, Douglas Naue; Pittol, Michele; Tomacheski, Daiane; Ribeiro, Vanda Ferreira; Santana, Ruth Marlene Campomanes

doi:10.1590/1980-5373-mr-2016-0790

Cited by 9 publications

(5 citation statements)

References 24 publications

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“…Such a method can be applied for preparation a wider products such as automotive body parts, plastic trinkets, cell phone cases, toys, containers, and water bottles. [85][86][87] Antimicrobial food packaging materials incorporated ZnO NPs can be divided into two types: bio-based nanocomposite and petroleum-based nanocomposite. The representative samples of antimicrobial food packaging are summarized in Table 3.…”

Section: Solvent Castingmentioning

confidence: 99%

ZnO Nanostructures in Active Antibacterial Food Packaging: Preparation Methods, Antimicrobial Mechanisms, Safety Issues, Future Prospects, and Challenges

Kim

Karthika

Gopinath

et al. 2020

Food Reviews International

195

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Packaging of food products is one of the most important stages of the food supply chain. Nano-size materials for packing food substances with appropriate properties result in better packaging performance and longer food shelf-life. In this review, the application of ZnO nano-size in active packaging of foods is discussed to identify gaps in applications for food packaging and safety. First, the crystal structures and morphologies of modified ZnO nanoparticles (ZnO NPs) are presented, and their synergistic effects on antimicrobial activities are discussed. This review also provides an overview of antimicrobial packaging containing ZnO NPs with a focus on preparation methods, antimicrobial mechanisms, and recent progress in packaging applications. The generation of reactive oxygen species (ROS) is the primary antimicrobial mechanism, which can be varied depending on morphology and size. Generally, ZnO NPs can inactivate fungi or Gram-positive and Gram-negative bacteria growth, which reduce the risk of cross-contamination, thereby extending the shelf life of products. Notably, the health concerns and hazards regarding the safety and migration of ZnO NPs application are also elaborated. Unintentional migration, inhalation, skin penetration, and ingestion may result in human health hazards. Therefore, to provide safety regulations, further investigations such as case by case study are recommended. KEYWORDSZinc oxide nanostructure; shelf life; safety; antimicrobial activity; food packaging CONTACT Jongchul Seo

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Section: Solvent Castingmentioning

confidence: 99%

ZnO Nanostructures in Active Antibacterial Food Packaging: Preparation Methods, Antimicrobial Mechanisms, Safety Issues, Future Prospects, and Challenges

Kim

Karthika

Gopinath

et al. 2020

Food Reviews International

195

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“…Nowadays, the antibacterial and antifouling properties of a material are very interesting as elastomers can be degraded by environmental agents, such as mechanical stress, heating/cooling, chemicals, and hydrolysis under working conditions, causing the polymer to be vulnerable to bacterial contaminations or infections, which are a severe threat to humans. Antibacterial refers to anything that destroys bacteria or suppresses their growth or their ability to reproduce, whereas antifouling systems can be determined as the surface treatment on a substrate to prevent contamination by unwanted organisms [89][90][91].…”

Section: Antibacterial and Antifouling Shape Memory Elastomersmentioning

confidence: 99%

Recent Developments in Shape Memory Elastomers for Biotechnology Applications

et al. 2022

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Shape memory elastomers have revolutionised the world since their introduction in the 20th century. The ability to tailor chemical structures to produce a family of materials in wide-ranging forms with versatile properties has propelled them to be ubiquitous. Recent challenges in the end-of-life management of polymeric materials should prompt us to ask, ‘what innovations in polymeric materials can make a strong case for their use as efficient materials?’ The development of smart elastomers that can acquire, convey, or process a stimulus (such as temperature, pressure, electromagnetic field, moisture, and chemical signals) and reply by creating a useful effect, specifically a reversible change in shape, is one such innovation. Here, we present a brief overview of shape memory elastomers (SMEs) and thereafter a review of recent advances in their development. We discuss the complex processing of structure-property relations and how they differ for a range of stimuli-responsive SMEs, self-healing SMEs, thermoplastic SMEs, and antibacterial and antifouling SMEs. Following innovations in SEMs, the SMEs are forecast to have significant potential in biotechnology based on their tailorable physical properties that are suited to a range of different external stimuli.

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“…Of these, ZnO is considered the most promising safe and anti bacterial agent (Zhao et al, 2018). In addition to the bacterial properties, ZnO is frequently used as an agent of inorganic reinforcement in various polymers, with a view to improving the thermal properties, mechanical and chemical (Simões et al, 2017;Cetin et al, 2018). ZnO is often used in various polymeric films, for the manufacture of the active antimicrobial packaging (Naveed ul Haq et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Identifying the Optimum Method for Modifying the Zinc Oxide Surface in order to Obtain a High Deposit Degree of the Functioning Agent

Sönmez¹,

Ficai²,

Ficai³

et al. 2018

The International Conference on Advanced Materials and Systems

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The aim of this study is to identify the optimal method of surface modification of ZnO nanoparticles in order to obtain a high deposition rate of the polydimethylsiloxane (PDMS) functionalizing agent. Thus, in order to identify the optimal route, the surface of ZnO nanoparticles were functionalized by 3 methods, ultrasonic, magnetic stirring and vacuum adsorption, followed by advanced powder characterization, FTIR, SEM, EDS, DSC-TG. The FTIR analysis recorded on the surface modified ZnO powder highlights the functional groups in the PDMS, regardless of the synthesis method, which confirms that the functionalization took place. However, based on the intensity of PDMS functional groups, it can be concluded that the highest deposition rate is obtained in the case of ultrasonography, followed by the magnetic stirring and vacuum adsorption method. This different deposition rate can be attributed to the fact that ultrasonication leads to ZnO particles being broken down into smaller particles, resulting in a higher contact surface with PDMS. The SEM image obtained on the commercial ZnO powder and the ZnO / PDMS powder, highlights their extremely varied morphology and demonstrates that the modification does not influence either the shape or size of the ZnO. EDS analysis confirms that functionalization took place due to the presence of the Si element alongside the other Zn and O major elements. The DSC-TG analysis obtained on the ZnO / PDMS powder indicated an organic mass loss, from the organosilane structure, of 5.51% in the range of 365-530°C. The results obtained provide the premise that these functionalized ZnO nanoparticles in addition to antibacterial properties will improve compatibility / dispersibility in various polymeric matrices.

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Thermoplastic Elastomers Containing Zinc Oxide as Antimicrobial Additive Under Thermal Accelerated Ageing

Cited by 9 publications

References 24 publications

ZnO Nanostructures in Active Antibacterial Food Packaging: Preparation Methods, Antimicrobial Mechanisms, Safety Issues, Future Prospects, and Challenges

ZnO Nanostructures in Active Antibacterial Food Packaging: Preparation Methods, Antimicrobial Mechanisms, Safety Issues, Future Prospects, and Challenges

Recent Developments in Shape Memory Elastomers for Biotechnology Applications

Identifying the Optimum Method for Modifying the Zinc Oxide Surface in order to Obtain a High Deposit Degree of the Functioning Agent

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