Responsive Systems in Food Packaging

Purkayastha, Srijita; Biswal, Agni Kumar; Saha, Sampa

doi:10.1007/s41783-017-0007-0

Cited by 14 publications

(10 citation statements)

References 33 publications

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“…Below the phase transition temperature, the polymer chains are frozen and in a glassy state, and the free volume holes are very small. When the temperature increases, chains can move, and the free volume holes increase their size, changing the breathability and water vapor transmission, and thus, the humidity [31]. In addition to changes in volume, TSPU nanofibers can be deposited over a PET nonwoven nanofiber mat.…”

Section: Humidity Temperature and Phmentioning

confidence: 99%

Specialty Polymers

Gupta¹

2022

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A large number of annual cases of diseases and deaths related to spoiled or contaminated food, and the amount of food waste are a matter of socio-economic impact, highlighting the need for a fast, easy, cheap, available, and real-time determination of food quality and safety. To ensure this, physical and chemical food quality indicators such as humidity, temperature, gases, pH, microorganisms, pesticides, etc., should be controlled and monitored during production, transportation, storage, and consumption. In this sense, smart polymers are raised as useful tools to facilitate this task. These polymers are sensitive to variations in the microenvironment, modifying their properties and/or generating a response that can be measured. Due to their versatility, these materials can be part of the food packaging to inform the consumers or be used as a measuring tool to determine the state of the food. This chapter envisaged the concept of smart polymers, the types, and their main applications for determining food quality and ensuring food and beverage safety.

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Section: Humidity Temperature and Phmentioning

confidence: 99%

Specialty Polymers

Gupta¹

2022

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“…In response to the increasing environmental concerns and the intricate logistics of mass vaccination, it is necessary to develop smart, innovative, and sustainable packaging materials for the safe storage and transportation of vaccines (Purkayastha et al 2017 ). The potential approach for the management of plastic-based vaccine packaging waste is well illustrated in Fig.…”

Section: Adopted Recommendationsmentioning

confidence: 99%

From outbreak of COVID-19 to launching of vaccination drive: invigorating single-use plastics, mitigation strategies, and way forward

Das

Sharma

Saha

et al. 2021

Environ Sci Pollut Res

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Graphical abstract The unforeseen outbreak of the COVID-19 epidemic has significantly stipulated the use of plastics to minimize the exposure and spread of the novel coronavirus. With the onset of the vaccination drive, the issue draws even more attention due to additional demand for vaccine packaging, transport, disposable syringes, and other allied devices scaling up to many million tonnes of plastic. Plastic materials in personal protective equipment (PPE), disposable pharmaceutical devices, and packaging for e-commerce facilities are perceived to be a lifesaver for the frontline healthcare personnel and the general public amidst recurring waves of the pandemic. However, the same material poses a threat as an evil environmental polluter when attributed to its indiscriminate and improper littering as well as mismanagement. The review not only highlights the environmental consequences due to the excessive use of disposable plastics amidst COVID-19 but also recommends mixed approaches to its management by adopting the combined and step-by-step methodology of adequate segregation, sterilization, sanitization activities, technological intervention, and process optimization measures. The overview finally concludes with some crucial way-forward measures and recommendations like the development of bioplastics and focusing on biodegradable/bio-compostable material alternatives to holistically deal with future pandemics.

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“…[9] Cellulose is one such naturally available, nontoxic, low cost, biodegradable polymer. [10] In its nano form, due to high surface area and aspect ratio, [11] cellulose fibrils find wide applications in different fields, such as packaging, [12,13] biomedical, [14][15][16] composite, [17] and so forth. Availability of multiple hydroxyl groups in cellulose backbone provides the option for their modification, thus facilitating them to interact and bind dye molecules from contaminated water resources.…”

Section: Introductionmentioning

confidence: 99%

Nano fibrillated cellulose‐based foam by Pickering emulsion: Preparation, characterizations, and application as dye adsorbent

Purkayastha

Ghosh

Saha

2021

Polymer Engineering & Sci

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An ecofriendly and biodegradable porous structure was prepared from drying aqueous foams based on nano fibrillated cellulose (NFC), extracted from softwood pulp by subcritical water/CO 2 treatment (SC-NFC). The primary aim of this work was to use the modified SC-NFC as stabilizer for a water-based Pickering emulsion which upon drying, yielded porous cellulosic materials, a good dye adsorbent. In order to exploit the carboxymethylated SC-NFC (CMSC-NFC, with a degree of substitution of 0.35 and a charge density of 649 μeqv/g) as a stabilizer for water-based Pickering emulsion in subsequent step, an optimized quantity of octyl amine (30 mg/g of SC-NFC) was added to make them partially hydrophobic. A series of dry foam structures were prepared by varying the concentrations of treated CMSC-NFCs and 4 wt% was found to be the optimum concentration to yield foam with high porosity (99%) and low density (0.038 g/cc) along with high compression strength (0.24 MPa), superior to the conventionally extracted NFC. The foams were applied to capture as high as 98% of methylene blue dyes, making them a potential green candidate for treating industrial effluent. In addition, the dye adsorption kinetics and isotherms were found to be well suited with second order kinetics and Langmuir isotherm models.

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Responsive Systems in Food Packaging

Cited by 14 publications

References 33 publications

Specialty Polymers

Specialty Polymers

From outbreak of COVID-19 to launching of vaccination drive: invigorating single-use plastics, mitigation strategies, and way forward

Nano fibrillated cellulose‐based foam by Pickering emulsion: Preparation, characterizations, and application as dye adsorbent

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