A review on biopolymer-based treatments for consolidation and surface protection of cultural heritage materials

Caruso, Maria Rita; D’Agostino, Giulia; Milioto, Stefana; Cavallaro, Giuseppe; Lazzara, Giuseppe

doi:10.1007/s10853-023-08833-5

Cited by 27 publications

(10 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…73%) for 100 nm plastics. The properties of biocomposite materials are strictly correlated with the adhesion between the polymer and filler [ 11 , 37 , 38 ]. The specific matrix/filler interactions can be studied by using different techniques, including thermal analysis methods.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Green Materials Obtained by PCL Melt Blending with Diatomaceous Earth

Carotenuto,

Cavallaro,

Chinnici

et al. 2024

Molecules

Self Cite

View full text Add to dashboard Cite

In this work, diatomaceous earth (Diat) was explored as filler for polycaprolactone (PCL) to obtain composite green materials with promising viscoelastic and thermal properties. The composites were prepared by blending variable Diat amounts (5, 15 and 50 wt%) with a molten PCL matrix. The viscoelastic characteristics of PCL/Diat hybrids were studied by Dynamic Mechanical Analysis (DMA) under an oscillatory regime, while the thermal properties were determined by Differential Scanning Calorimetry (DSC) and Thermogravimetric Analysis (TGA). We detected that the presence of Diat enhances the energy storage capacity of PCL for temperatures lower than the polymer melting point. Both DMA and DSC data revealed that the PCL melting temperature is slightly affected by the Diat addition, while the TGA results showed that the thermal stability of the polymer can be significantly improved by mixing PCL with diatomaceous earth. Moreover, we observed that the dispersion of Diat into the matrix favors the crystallization process of PCL. Interestingly, the improvements of PCL properties (elasticity, thermal stability, and crystallinity) are proportional to the Diat concentration of the composites. These findings reflect the interfacial compatibility between PCL and diatomaceous earth. In conclusion, this study highlights that the preparation of PCL/Diat hybrids by melt blending is suitable for the development of composite materials for technological applications, including the remediation of air pollutants within museum environments.

show abstract

Section: Introductionmentioning

confidence: 99%

Hybrid Green Materials Obtained by PCL Melt Blending with Diatomaceous Earth

Carotenuto,

Cavallaro,

Chinnici

et al. 2024

Molecules

Self Cite

View full text Add to dashboard Cite

show abstract

“…It is biocompatible, biodegradable, and possesses good mechanical strength and flexibility [ 149 , 150 , 151 ]. Additionally, it is eco-friendly, renewable, and low-cost [ 130 , 131 , 149 , 150 , 151 , 152 , 153 , 154 ]. Consisting of a linear and unbranched homopolysaccharide composed of β-D-glucopyranose units linked by β-1,4 glycosidic bonds [ 17 , 47 ], cellulose is readily available, with wood being the primary natural source, but it is also found in plants such as cotton and flax, as well as in vegetables, fruits, and biowaste [ 47 , 149 , 150 ].…”

Section: Polymersmentioning

confidence: 99%

“…It is low-cost [ 98 , 130 , 132 , 134 , 176 , 177 ] and possesses good swelling properties [ 78 , 178 ], providing a moist environment and promoting effective hydration of the wound area [ 179 , 180 ]. Furthermore, it is renewable [ 130 , 131 ] and eco-friendly [ 67 , 131 , 132 , 133 , 134 , 154 , 178 ].…”

Section: Polymersmentioning

confidence: 99%

Hydrogels in Cutaneous Wound Healing: Insights into Characterization, Properties, Formulation and Therapeutic Potential

Ribeiro,

Simões,

Vitorino

et al. 2024

Gels

View full text Add to dashboard Cite

Hydrogels are polymeric materials that possess a set of characteristics meeting various requirements of an ideal wound dressing, making them promising for wound care. These features include, among others, the ability to absorb and retain large amounts of water and the capacity to closely mimic native structures, such as the extracellular matrix, facilitating various cellular processes like proliferation and differentiation. The polymers used in hydrogel formulations exhibit a broad spectrum of properties, allowing them to be classified into two main categories: natural polymers like collagen and chitosan, and synthetic polymers such as polyurethane and polyethylene glycol. This review offers a comprehensive overview and critical analysis of the key polymers that can constitute hydrogels, beginning with a brief contextualization of the polymers. It delves into their function, origin, and chemical structure, highlighting key sources of extraction and obtaining. Additionally, this review encompasses the main intrinsic properties of these polymers and their roles in the wound healing process, accompanied, whenever available, by explanations of the underlying mechanisms of action. It also addresses limitations and describes some studies on the effectiveness of isolated polymers in promoting skin regeneration and wound healing. Subsequently, we briefly discuss some application strategies of hydrogels derived from their intrinsic potential to promote the wound healing process. This can be achieved due to their role in the stimulation of angiogenesis, for example, or through the incorporation of substances like growth factors or drugs, such as antimicrobials, imparting new properties to the hydrogels. In addition to substance incorporation, the potential of hydrogels is also related to their ability to serve as a three-dimensional matrix for cell culture, whether it involves loading cells into the hydrogel or recruiting cells to the wound site, where they proliferate on the scaffold to form new tissue. The latter strategy presupposes the incorporation of biosensors into the hydrogel for real-time monitoring of wound conditions, such as temperature and pH. Future prospects are then ultimately addressed. As far as we are aware, this manuscript represents the first comprehensive approach that brings together and critically analyzes fundamental aspects of both natural and synthetic polymers constituting hydrogels in the context of cutaneous wound healing. It will serve as a foundational point for future studies, aiming to contribute to the development of an effective and environmentally friendly dressing for wounds.

show abstract

“…It is naturally derived from crustaceans or fungi and has been praised in past decades, especially in the medical field or for heavy metal remediation [20,21]. Recently, applications in cultural heritage have been found for chitosan due to its protective assets, which include operating as coating for copper and silver [22][23][24] and consolidating anti-microbial agents on various substrates (i.e., paper, paintings, textiles, metals, wood) [25][26][27][28][29][30]. Chitosan has been used in the form of gel film or as nanoparticles or nanocomposites with ZnO [26,31].…”

Section: Introductionmentioning

confidence: 99%

Agar and Chitosan Hydrogels’ Design for Metal-Uptaking Treatments

Cuvillier,

Passaretti,

Guilminot

et al. 2024

Gels

View full text Add to dashboard Cite

In the field of cultural heritage, the use of natural gels is rising for the application of active agents. Here, two natural polymers are assessed: agar, a pioneer hydrogel for conservation treatments, and chitosan, a rather novel and metal-binding gel. For chitosan, a state-of-the-art based formulation (CS–ItA–LCys) is evaluated as it was reported for silver-complexing properties. It is evaluated whether these polymers can withstand the addition of the chelating compound deferoxamine, which is a bacterial siderophore. This allows for the obtainment of completely bio-sourced gel systems. A Fourier-transformed (FT) infrared spectroscopy characterization is performed, completed with rheological measurements and Cryo-Scanning Electron Microscopy (cryo–SEM) to investigate the physico–chemical properties of the gels, as well as their interaction with deferoxamine. Both polymers are also tested for their inherent complexing ability on silver ions using FT–Raman spectroscopy. A multi-analytical comparison shows different microstructures, in particular, the presence of a thick membrane for chitosan and different mechanical behaviors, with agar being more brittle. Neither hydrogel seems affected by the addition of deferoxamine; this is shown by similar rheological behavior and molecular structures in the presence or absence of the chelator. The intrinsic abilities of the chitosan formulation to make silver complex are demonstrated with the observation of two peaks characteristic of Ag–S and Ag–O bonds. Agar and chitosan are both proven to be reliable gels to act as carriers for bio-based active agents. This paper confirms the potential asset of the chitosan formulation CS–ItA–LCys as a promising gel for the complexation of soluble silver.

show abstract

A review on biopolymer-based treatments for consolidation and surface protection of cultural heritage materials

Cited by 27 publications

References 72 publications

Hybrid Green Materials Obtained by PCL Melt Blending with Diatomaceous Earth

Hybrid Green Materials Obtained by PCL Melt Blending with Diatomaceous Earth

Hydrogels in Cutaneous Wound Healing: Insights into Characterization, Properties, Formulation and Therapeutic Potential

Agar and Chitosan Hydrogels’ Design for Metal-Uptaking Treatments

Contact Info

Product

Resources

About