Biopolymer Processing, Utilization and Applications

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Materials Processes".

Deadline for manuscript submissions: 15 March 2026 | Viewed by 2493

Special Issue Editor

Special Issue Information

Dear Colleagues,

Living organisms produce biopolymers, which are characterized by their inherent heterogeneity and complexity. The benign nature of biopolymers makes them particularly relevant for a wide range of contemporary applications. Their unique properties have long captured research interest, especially as society faces challenges such as sustainability, waste management, energy efficiency, and more. Biopolymers like cellulose, chitin, collagen, silk, and DNA are frequently studied for their structure, organization, and behavior at various length levels, contributing to advancements in material science and applications ranging from food science (e.g., stabilization and dietary fiber supplementation) to medical devices and fuel cell components. Their functions are retained or even upgraded upon compounding with non-biopolymeric components, making them suitable matrices, fillers or active components of advanced composite materials.

In this context, this issue aims to explore advances and challenges in biopolymer research, also focusing on the following topics:

  • Biopolymers extraction and post-processing;
  • Current trends in biopolymer processing in complex shapes;
  • Biopolymers use in medicine and pharmacy;
  • Biopolymers utilization in technical fields;
  • Advanced methodologies in biopolymers characterization;
  • Valorization of biopolymers-rich waste in value added products.

In the frame of this Special Issue, we invite the submission of original research and review articles, mini-reviews and prospective studies referring to the topics above.

Dr. Selestina Gorgieva
Guest Editor

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Keywords

  • biopolymeric nano- and micro particles
  • biopolymers in composites
  • bacteria-derived biopolymers
  • biopolymers in packaging
  • biopolymers in energy
  • biopolymers in medicine
  • biopolymers as adsorbents
  • degradation of biopolymers

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Published Papers (2 papers)

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Research

14 pages, 459 KB  
Article
Development of Biodegradable Straws Using Spent Coffee Grounds
by Dani Dordevic, Bojana Danilovic, Kristina Cvetković, Lena Zelenka, Dominika Kotianova and Simona Dordevic
Processes 2025, 13(10), 3055; https://doi.org/10.3390/pr13103055 - 24 Sep 2025
Viewed by 1517
Abstract
The aim of the work was to innovate in the field of biodegradable straws by valorizing waste materials, specifically spent coffee grounds (SCG), in combination with food-grade biopolymers. Biodegradable straws were produced using pork gelatin and three starch types (corn, rice, and potato) [...] Read more.
The aim of the work was to innovate in the field of biodegradable straws by valorizing waste materials, specifically spent coffee grounds (SCG), in combination with food-grade biopolymers. Biodegradable straws were produced using pork gelatin and three starch types (corn, rice, and potato) via a dipping technique designed to ensure reproducible layer formation and structural stability. The prepared straws were analyzed for their physicochemical, antioxidant, textural, and solubility properties. Antioxidant potential was assessed using multiple assays (FRAP, ABTS, and CUPRAC), along with determinations of total polyphenol and flavonoid contents. Texture analysis was conducted to evaluate hardness, fracturability, and compression in comparison with commercial paper and plastic straws. Biodegradability was examined through solubility tests in distilled and seawater. The addition of SCG markedly enhanced antioxidant capacity and increased polyphenol and flavonoid contents, while starch type influenced mechanical performance, with rice starch-based straws showing the highest hardness values. All straws demonstrated complete dissolution in both distilled and seawater within 24 h, confirming rapid biodegradation. The results highlight the dual advantage of SCG incorporation: improving functional properties through antioxidant enrichment and reinforcing environmental sustainability by valorizing food industry waste. This study demonstrates the potential of SCG-enhanced straws as a scalable and eco-friendly alternative to conventional single-use plastics. Full article
(This article belongs to the Special Issue Biopolymer Processing, Utilization and Applications)
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13 pages, 3691 KB  
Article
Analysis of Kinetic Effects of Nanofibrillated Cellulose on MMA Polymerization via Temperature Monitoring
by David Victoria-Valenzuela, Ana Beatriz Morales-Cepeda and Sergio Alejandro De La Garza-Tenorio
Processes 2025, 13(8), 2476; https://doi.org/10.3390/pr13082476 - 5 Aug 2025
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Abstract
This study investigates the influence of cellulose nanofibrils (CNFs) on the polymerization kinetics of methyl methacrylate (MMA) during in situ suspension polymerization at 70 °C (343.15 K). Four CNF concentrations were evaluated and compared to a reference system without CNFs. Polymerizations were carried [...] Read more.
This study investigates the influence of cellulose nanofibrils (CNFs) on the polymerization kinetics of methyl methacrylate (MMA) during in situ suspension polymerization at 70 °C (343.15 K). Four CNF concentrations were evaluated and compared to a reference system without CNFs. Polymerizations were carried out in a thermostatted flask immersed in an ethylene glycol bath and covered to ensure thermal stability. The temperature profiles of both the reaction medium and the surrounding bath were continuously recorded, allowing for the calculation of heat flow, polymerization rate (Rp), and monomer conversion. The incorporation of CNFs led to a significant increase in Rp and faster MMA conversion. This effect was attributed to the presence of nanocellulose within the polymerizing medium, which restricted diffusion and contributed to the onset of the phenomenon of autoacceleration. Additionally, CNFs promoted a higher total heat release, underscoring the need for thermal control during scale-up. The resulting material qualifies as a biocomposite, as biobased nanofibrils became integrated into the polymer matrix. These findings demonstrate that CNFs act as effective kinetic promoters in MMA polymerizations and may serve as functional additives to enhance both reaction performance and sustainability. However, safety considerations remain critical when transferring this approach to industrial processes. Full article
(This article belongs to the Special Issue Biopolymer Processing, Utilization and Applications)
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