Porcine skin as a source of biodegradable matrices: alkaline treatment and glutaraldehyde crosslinking

Rodrigues, Fabiana Tessari; Martins, Virgínia da Conceição Amaro; Plepis, Ana Maria de Guzzi

doi:10.1590/s0104-14282010005000013

Cited by 19 publications

(17 citation statements)

References 21 publications

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“…Other researchers have obtained similar results for soy flour, collagen, and chitosan after cross-linking [54][55][56]. These results also confirm that the BC-PVA composites and their cross-linked specimens, particularly the highly cross-linked ones, can exhibit excellent thermal stability in addition to their high tensile properties.…”

Section: Wxrd Of Bc Pva and Their Highly Cross-linked Specimenssupporting

confidence: 79%

Bacterial cellulose-based membrane-like biodegradable composites using cross-linked and noncross-linked polyvinyl alcohol

Qiu

Netravali

2012

J Mater Sci

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Bacterial cellulose (BC)-based membrane-like biodegradable composites were produced by immersing wet BC pellicles in polyvinyl alcohol (PVA) solution. The BC content in the BC-PVA composites can be adjusted by varying the concentration of PVA solution. Chemical cross-linking of PVA was carried out using glutaraldehyde to increase the mechanical properties of the composites as well as to make the PVA partially to highly water insoluble. Examination by scanning electron microscopy indicated that the PVA not only penetrated the BC network, but also filled the pores within the BC pellicle. Attenuated total reflectance-Fourier transform infrared spectroscopy showed that acetal linkages could be formed in the BC-PVA composites by a cross-linking reaction. Sol-gel results indicated that cross-linking reaction increasingly made PVA insoluble in water resulting in higher gel (crosslinked fraction) content in the PVA. Wide-angle X-ray diffraction results showed decreased crystallinity in crosslinked BC and PVA, as expected. It was also found that crystal size was smaller in PVA after cross-linking. The BC-PVA composites had excellent tensile properties and cross-linking increased these properties further. Thermogravimetric analysis showed higher thermal stability for BC-PVA composites compared to PVA. The cross-linked specimens, especially the highly cross-linked ones, showed even higher thermal stability. The methods developed in this study make it possible to control the PVA content in the composites as well as the cross-linking level of PVA. These composites could be good candidates for replacing traditional non-biodegradable plastics.

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Section: Wxrd Of Bc Pva and Their Highly Cross-linked Specimenssupporting

confidence: 79%

Bacterial cellulose-based membrane-like biodegradable composites using cross-linked and noncross-linked polyvinyl alcohol

Qiu

Netravali

2012

J Mater Sci

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“…The weight losses observed for pure HNTs at 471°C, 20% at 700°C, and 24% at 800°C forms about 10% and, meanwhile, confirming the higher thermal stability of HNTs (Du et al 2006). The thermal stability enhancement after crosslinking has been observed earlier for many polymers (Chabba et al 2005, Rodrigues et al 2010. Figure 4 shows T g and T m of 102.1°C and 189.7°C, respectively.…”

Section: Field Emission Scanning Electron Microscopysupporting

confidence: 55%

Physical Properties of Halloysite Nanotubes-Polyvinyl Alcohol Nanocomposites Using Malonic Acid Crosslinked

Gaaz¹,

Hussein²,

Al-Amiery³

2017

JKUKM

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“…Investigators in ref . tested three GA crosslinking methods with the result that the loss of ability depends not only on concentration and crosslinking time but also on the crosslinking method (one step/45 min vs three steps/15 min = 45 min).…”

Section: Crosslinking Of Collagenmentioning

confidence: 99%

Collagen and Its Modifications-Crucial Aspects with Concern to Its Processing and Analysis

Rýglová

Braun

Suchý

2017

Macromol. Mater. Eng.

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Many connective tissue diseases and defects are associated with poor synthesis or excessive degradation of collagen. The modern tissue engineering approach is to replace the defective site via the implantation of a biocompatible scaffold which serves as a carrier for cell incorporation, proliferation, and growth. Collagen is widely used in the field of clinical medicine in connection with both hard and soft tissue applications. However, certain collagen properties such as poor dimensional stability, poor in vivo mechanical strength, low degree of elasticity, variable nature in terms of enzymatic degradation, crosslinking density, fiber size, trace impurities, and side effects frequently limit both its analysis and application. This review focuses particularly on the processing and modification of collagen type I with respect to its biological and mechanical properties. The processing of collagen into scaffolds is crucial to mimic successfully the extracellular matrices. Moreover, the review suggests several ways in which the most common problems related to the isolation, handling, electrospinning, and crosslinking of collagen can be overcome while maintaining its native character as much as possible. Further, the review provides a summary of the analytical methods available for the physicochemical characterization of collagen with respect to both its molecular and submolecular structure.

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Porcine skin as a source of biodegradable matrices: alkaline treatment and glutaraldehyde crosslinking

Cited by 19 publications

References 21 publications

Bacterial cellulose-based membrane-like biodegradable composites using cross-linked and noncross-linked polyvinyl alcohol

Bacterial cellulose-based membrane-like biodegradable composites using cross-linked and noncross-linked polyvinyl alcohol

Physical Properties of Halloysite Nanotubes-Polyvinyl Alcohol Nanocomposites Using Malonic Acid Crosslinked

Collagen and Its Modifications-Crucial Aspects with Concern to Its Processing and Analysis

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