Study of the combined effect of both clay and glycerol plasticizer on the properties of chitosan films

Lavorgna, Marino; Piscitelli, Filomena; Mangiacapra, Pasqualina; Buonocore, Giovanna G.

doi:10.1016/j.carbpol.2010.04.054

Cited by 280 publications

(166 citation statements)

References 25 publications

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“…Changes in chemical and biological properties depend on the nature of the side group. Furthermore, the characteristics of chitosan, such as cationic, hemostatic and insoluble at high pH, can be completely reversed, which can make the anionic watersoluble molecule and also presenting anticoagulants properties [15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Structure and Properties of Nanocrystalline Chitosan

Pighinelli

et al. 2016

JABB

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Chitosan and its derivatives are polymers with excellent properties to be used in regenerative medicine because they guarantee efficiency in the healing process. This polymer has a great potential for the development of a new generation of biomaterials that can be used in regenerative medicine and tissue engineering. The nanocrystalline chitosan (nCh) is a modified form of chitosan prepared by the method of obtaining chitosan salts. It is characterized by having the same special properties of the precursor chitosan as biocompatibility, bioactivity, be non-toxic and biodegradable. The aim of this study was to develop a new method of obtaining nanocrystalline chitosan according to their chemical and physical characterization. The material was characterized by Absorption Spectroscopy in the Infrared Region -with the Fourier transform (FTIR-ATR), scanning electron microscopy, SEM, Nuclear Magnetic Resonance, NMR, Diffraction of X-rays, particle size analysis and the potential Zeta. The results indicated that the process of obtaining nanocrystalline chitosan did not change the structure of the precursor chitosan. The analysis in the FTIR showed the same functional groups of the precursor chitosan. The 1H-NMR spectroscopy was helpful in the analysis of the chitosan samples in a wide range of values to determine the degree of deacetylation (GD). The morphology indicates the homogeneity of the structure and the surface. The X-ray diffraction shows the reduction of crystallinity of QNC, which corresponds to the amorphous structure thereof. The value of the zeta potential of the chitosan acetate (AQ) in acid media (pH 4.43) was 43.6 mV, while the value of QNC (pH 7.3) was 15.4 mV due to its high polydispersity. The variation in particle size of samples and AQ using QNC 0.450 uM mesh filter, indicated the average particle size of 55.52 and 266.0 nm, respectively.

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Section: Introductionmentioning

confidence: 99%

Structure and Properties of Nanocrystalline Chitosan

Pighinelli

et al. 2016

JABB

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“…The analyses were performed under nitrogen at a flow rate of 50 mL min-1. The samples were heated at 10 °C min-1 from 25 °C to 500 °C (Lavorgna et al, 2010).…”

Section: Thermo Gravimetric Analysis (Tga)mentioning

confidence: 99%

Understanding the Influence of Encapsulating Matrix on the Physical and Thermal Properties of Oregano Essential Oil Powder

Hijo¹,

Costa²,

Silva³

et al. 2017

IJHA

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In this study, the influence of blends of carbohydrates on the physical and thermal properties of oregano essential oil micro particles was evaluated. Powders were produced by spray drying using different wall materials: gum Arabic (GA), modified starch (MS) and maltodextrin (MD). The micro particles were characterized by morphology, moisture content, water activity, particle size distribution, particle mean diameter, poly dispersity index, glass transition temperature (Tg) and thermal stability. The partial replacement of GA by MS or a mixture of MS and MD resulted in micro particles with lower moisture content. The results showed that micro particles with GA had higher values of Tg (97.02 °C), indicating more physical stability. However, the use of MS and MD results in a slight reduction of Tg. TGA results showed that the nature of wall materials have considerable effect on the thermal degradation of micro particles. Thermal analysis revealed the potential of application of these carbohydrates for substitution of GA.

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“…Beberapa plasticizer yang telah ditambahkan dalam film kitosan adalah golongan poly-ol yang bersifat hidrofilik seperti etilen glikol (EG), polietilen glikol (PEG), propilen glikol (PG) (Suyatma et al, 2005), gliserol (Pereda et al 2007), clay (Lavogna et al, 2010) dan sorbitol (Maria et al, 2015). Film kitosan yang ditambah plasticizer secara umum telah meningkatkan sifat film kitosan seperti elongasi, kekuatan tarik, menurunkan permeabilitas terhadap air serta tingkat kerapuhan.…”

Section: Pendahuluanunclassified

SYNTHESIS OF CHITOSAN-FILM COMPOSITE TiO2 USING SORBITOL AS PLASTICIZER

Fajriati¹,

Sedyadi²,

Sudarlin³

2017

ALCHEMY J.Pen.Kim

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The synthesis of chitosan–TiO2 film composite using sorbitol as plasticizer has been conducted. This research aims to develop environmental friendly plastic material which is safe for health due to the use of biodegradable chitosan - TiO2 that can block UV rays and therefore, maintain the quality of product from damage caused by UV rays. The anatase phase TiO2 nanocrystal was synthesized in chitosan matrix at room temperature and aging process. The solution was then added and blended in sorbitol for 24 hours to obtain homogeneous solution. The composite film was formed by coating method on a plate substrate, followed by drying. The characterization of film composite by XRD, TEM and FTIR showed the forming of anatase phase TiO2 nanocrystal that dispersed in chitosan matrix and formed the hydrogen bond. Meanwhile, from the physical properties characterization it was observed that the use of sorbitol as plasticizer had improved the plasticity tensile strength and elongation of the composite film. However, the excess sorbitol reduced the elasticity, tensile strength and elongation of the plastic. The best quality of plasticity obtained from film composite added by 3 % of sorbitol.

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Study of the combined effect of both clay and glycerol plasticizer on the properties of chitosan films

Cited by 280 publications

References 25 publications

Structure and Properties of Nanocrystalline Chitosan

Structure and Properties of Nanocrystalline Chitosan

Understanding the Influence of Encapsulating Matrix on the Physical and Thermal Properties of Oregano Essential Oil Powder

SYNTHESIS OF CHITOSAN-FILM COMPOSITE TiO2 USING SORBITOL AS PLASTICIZER

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