Development of protein-based bioplastics modified with different additives
Félix Ángel, Manuel; Pérez-Puyana, Víctor Manuel; Romero García, Alberto; Guerrero Conejo, Antonio Francisco
- Published
- 2017-11-05
- Publisher
- Wiley
- Language
- en
Abstract
Proteins have been postulated as a feasible source for manufacturing biodegradable polymeric materials. The aim of this study is the development of bioplastic materials from two different protein sources: albumen protein isolated (API), which consists of globular proteins, and crayfish flour (CF), mostly composed of myofibrillar proteins. In order to explore the effect of some chemical reagents on the mechanical properties of the blends and bioplastic materials, two different additives have been used: sodium sulfite (SS) and urea (U). The first one is a reducing agent, and the second one is considered a denaturing agent. The addition of chemical agents induces changes not only in mechanical properties but also in the most suitable processing conditions, which strongly depends on the protein used. Thus, the denaturation of globular proteins seems to lead to a more consistent blend before the injection-molding process. However, when myofibrillar proteins are used, the processability of the dough-like material increases after using either SS or U additives. This work illustrates the feasibility of producing animal-based biodegradable bioplastic materials with different properties and, consequently, different applications, which contribute to adding a high value to two different byproducts from the food industry.
Full text
Depósito de investigación de la Universidad de Sevilla https://idus.us.es/ Esta es la versión aceptada del artículo publicado en: This is a accepted manuscript of a paper published in: Journal of Applied Polymer Science (2018) vol.134 n.42 DOI: https://doi.org/10.1002/app.45430 Copyright: 1999-2025 John Wiley & Sons El acceso a la versión publicada del artículo puede requerir la suscripción de la revista. Access to the published version may require subscription. “This is the peer reviewed version of the following article: Felix Ángel, Manuel; Pérez-Puyana, Victor M; Romero García, Alberto; Guerrero Conejo, Antonio: Development of protein-based bioplastics modified with different additives: from Journal of Applied Polymer Science, vol.134 n.42 which has been published in final form at https://doi.org/10.1002/app.45430. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited."
