Facile preparation of solid gelatin foams by a water-lean batch foaming process.

Autor: Kartik R; Polymer Science and Technology Unit, Advanced Materials Laboratory, CSIR-Central Leather Research Institute (CSIR-CLRI), Adyar, Chennai 600020, Tamil Nadu, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India. Electronic address: r.kartik@clri.res.in., Shelly K; Department of Chemistry, Indian Institute of Technology Madras (IIT Madras), Chennai 600036, India., Lobo NP; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India; Centre for Analysis, Testing, Evaluation & Reporting Services (CATERS), CSIR-Central Leather Research Institute (CSIR-CLRI), Adyar, Chennai 600020, Tamil Nadu, India.
Jazyk: angličtina
Zdroj: International journal of biological macromolecules [Int J Biol Macromol] 2024 Dec 06; Vol. 287, pp. 138360. Date of Electronic Publication: 2024 Dec 06.
DOI: 10.1016/j.ijbiomac.2024.138360
Abstrakt: Existing polystyrenic and polyolefinic packaging foams are non-biodegradable, and persist in the environment for hundreds of years. Gelatin foams are an interesting alternative, given their biodegradability, biocompatibility, solution-based processability, low cost, and non-toxicity. However, current methods for preparing gelatin foams, such as freeze-drying, microfluidic foaming, and batch foaming, are not suitable for high-volume production. In this context, we report the preparation of solid gelatin foams by a water-lean batch foaming process that involves simply mixing bloomed gelatin with a blowing agent, selected from inorganic bicarbonates and cyclic organic carbonates, and heating the resulting mixture in an open mold. The foaming was primarily attributed to CO 2 produced by blowing agents, while the transformation from discrete gelatin granules to a continuous foam was facilitated by the melting, flowing, and fusion of the bloomed gelatin granules into a homogeneous mass upon heating. This process is simple, inexpensive, sustainable, and versatile, making it highly suitable for high-volume production of biodegradable foams, particularly for use in loose-fill packaging applications.
Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Ravishankar Kartik, and Nitin Prakash Lobo has patent #202411045946 pending to Council of Scientific and Industrial Research (CSIR). If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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