Study on the Properties of the Gelatin Modified Chitosan Films

2012 ◽  
Vol 482-484 ◽  
pp. 863-867 ◽  
Author(s):  
Wei Dong ◽  
Li Jun Qu ◽  
Xiao Qing Guo
Keyword(s):  
Mechanical Properties ◽  
Water Solubility ◽  
Composite Films ◽  
Chitosan Film ◽  
X Ray Diffraction ◽  
Elongation At Break ◽  
X Ray ◽  
Modified Chitosan ◽  
Ft Ir ◽  
Chitosan Films

Abstract: With the purpose to improve the mechanical properties and cut costs of chitosan films, a series of gelatin-chitosan films were prepared. The effect of gelatin content on the mechanical properites of films was studied. FT-IR spectrum and X-ray diffraction analysis showed good compatibility between gelatin and chitosan. The composite films exhibited a higher TS(tensile strengths) and ES(elongation at break) compared with chitosan film, especially when the content of gelatin in blends was 30%. The TS and ES revealed that the interaction between chitosan and gelatin was the strongest when the content of gelatin in blends was 30%. The results obtained from percent water absorption indicated these two biopolymers were high hydrophilicity polymer. The water solubility of composite films was higher than chitosan films. The results suggest that the interactions between gelatin and chitosan was good for the mechanical properties of composite films.

scholarly journals Enhancement of Chloroprene/Natural/Butadiene Rubber Nanocomposite Properties Using Organoclays and Their Combination with Carbon Black as Fillers

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1085
Author(s):  
Patricia Castaño-Rivera ◽  
Isabel Calle-Holguín ◽  
Johanna Castaño ◽  
Gustavo Cabrera-Barjas ◽  
Karen Galvez-Garrido ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Black ◽  
High Performance ◽  
Rubber Matrix ◽  
Butadiene Rubber ◽  
X Ray Diffraction ◽  
X Ray ◽  
Rubber Blends ◽  
Ft Ir ◽  
Chloroprene Rubber

Organoclay nanoparticles (Cloisite® C10A, Cloisite® C15) and their combination with carbon black (N330) were studied as fillers in chloroprene/natural/butadiene rubber blends to prepare nanocomposites. The effect of filler type and load on the physical mechanical properties of nanocomposites was determined and correlated with its structure, compatibility and cure properties using Fourier Transformed Infrared (FT-IR), X-ray Diffraction (XRD), Thermogravimetric Analysis (TGA) and rheometric analysis. Physical mechanical properties were improved by organoclays at 5–7 phr. Nanocomposites with organoclays exhibited a remarkable increase up to 46% in abrasion resistance. The improvement in properties was attributed to good organoclay dispersion in the rubber matrix and to the compatibility between them and the chloroprene rubber. Carbon black at a 40 phr load was not the optimal concentration to interact with organoclays. The present study confirmed that organoclays can be a reinforcing filler for high performance applications in rubber nanocomposites.

Preparation of Hydrophobic CaCO3-Wood Composite In Situ

2010 ◽  
Vol 113-116 ◽  
pp. 1712-1715
Author(s):  
Cheng Yu Wang ◽  
Chang Yu Liu ◽  
Jian Li
Keyword(s):  
Mechanical Properties ◽  
Organic Substrate ◽  
Dodecanoic Acid ◽  
Wood Composite ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ft Ir ◽  
Contact Angle Analysis ◽  
Double Diffusive

The preparation of hydrophobic CaCO3-wood composite through a double-diffusive method using dodecanoic acid as organic substrate is demonstrated. The product was characterized by the contact angle analysis, X-ray diffraction (XRD), fourier transform infrared spectroscopy (FT-IR) and scanning electron microscope (SEM). The mechanical properties of the product were measured. The results show that the synthesized CaCO3 fills in the wood cell and covers the surface of wood. The CaCO3-wood composite is hydrophobic. The mechanical properties of wood composite have significantly increased.

scholarly journals Thermal and electrical properties of polyimide/PANI nanofiber composites prepared via in situ polymerization

2018 ◽  
Vol 36 (2) ◽  
pp. 283-287
Author(s):  
Aseel A. Kareem
Keyword(s):  
In Situ Polymerization ◽  
Composite Films ◽  
Nanocomposite Films ◽  
X Ray Diffraction ◽  
Nanofiber Composite ◽  
X Ray ◽  
Thermal And Electrical Properties ◽  
Ft Ir ◽  
Thermal Stability Of

Abstract Polyimide/polyaniline nanofiber composites were prepared by in situ polymerization with various weight percentages of polyaniline (PANI) nanofibers. X-ray diffraction (XRD) and Fourier transform infrared spectra (FT-IR), proved the successful preparation of PANI nanofiber composite films. In addition, thermal stability of PI/PANI nanofiber composites was superior relative to PI, having 10 % gravimetric loss in the range of 623 °C to 671 °C and glass transition temperature of 289 °C to 297 °C. Furthermore, the values of the loss tangent tanδ and AC conductivity σAC of the nanocomposite films were notably higher than those of pure polyimide. The addition of 5 wt.% to 15 wt.% PANI nanofiber filler enhanced the activation energy of PI composites from 0.37 eV to 0.34 eV.

Influence of Organoclay on the Physical Properties of Polyethylene Nanocomposites

2006 ◽  
Vol 530-531 ◽  
pp. 709-714 ◽  
Author(s):  
Edcleide Maria Araújo ◽  
Amanda D. de Oliveira ◽  
Renata Barbosa ◽  
Tomás Jefférson Alves de Mélo
Keyword(s):  
Mechanical Properties ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Clay Nanocomposites ◽  
X Ray Diffraction ◽  
Polyethylene Matrix ◽  
X Ray ◽  
Ft Ir

In this work, polyethylene/montmorillonite clay nanocomposites were produced by melt intercalation. The clays were treated with quaternary ammonium salts and then treated and untreated clays were introduced in polyethylene. The clays were characterized by X-Ray Diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FT-IR). The nanocomposites were characterized by mechanical and flammability properties. The results showed that the mechanical properties were improved by introduction of organoclay in polyethylene matrix. By adding only 3wt% montmorillonite, the burning rate of the nanocomposites was reduced by 17% in relation to PE matrix.

scholarly journals The plasticizing effect of properties of manganous chloride and glycerin on poly(vinyl alcohol)

2015 ◽  
Vol 17 (2) ◽  
pp. 29-33
Author(s):  
Puyou Jia ◽  
Meng Zhang ◽  
Caiying Bo ◽  
Lihong Hu ◽  
Yonghong Zhou
Keyword(s):  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Thermal And Mechanical Properties ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Elongation At Break ◽  
X Ray ◽  
Ft Ir ◽  
Micro Morphology ◽  
Lower Tensile Strength

Abstract Poly(vinyl alcohol) films were prepared with manganous chloride (MnCl2 · 4H2O) and glycerin as complex plasticizer. The micro morphology of pure PVA film and complex plasticizer plasticized PVA films was observed by scanning electron microscope (SEM). The interaction between complex plasticizer and PVA molecules was investigated by Fourier transform infrared spectroscopy (FT-IR). The influence of complex plasticizer on crystalline, thermal and mechanical properties of PVA films was studied by X-ray diffraction (XRD), differential scanning calorimetry (DSC), thermogravimetric analysis (TG), and tensile testing, respectively. The results showed that the complex plasticizer of MnCl2 · 4H2O/glycerin could interacted with PVA molecular and then effectively destroy the crystals of PVA. PVA films plasticized with complex plasticizer of MnCl2 · 4H2O/glycerin became soft and ductile, with lower tensile strength and higher elongation at break compared with PVA films. This is an important cause of plasticization of the complex plasticizer of MnCl2 · 4H2O/glycerin on PVA films.

Preparation of Transparent Water-Insoluble Silk Fibroin Films

2011 ◽  
Vol 175-176 ◽  
pp. 79-84
Author(s):  
Min Qing Luo ◽  
Cen Cen Zhang ◽  
Shen Zhou Lu
Keyword(s):  
Mechanical Properties ◽  
Silk Fibroin ◽  
Light Transmittance ◽  
Human Cornea ◽  
X Ray Diffraction ◽  
X Ray ◽  
Blend Films ◽  
Structure Surface ◽  
Ft Ir ◽  
Transparent Water

The transparent water-insoluble silk fibroin(SF) films were casted from the mixture solution of silk fibroin and xylitol/mannitol. The structure, surface morphology, solubility, mechanical properties and light transmittance of the blend films were measured. FT-IR, X-ray diffraction retuslts indicated that the films were mainly composed of Silk I structure. SEM showed the blend films with xylitol were miscible, whereas the blend films with mannitol had phase-separated structure. There were lots of nanopores in the blend films in the wet state. The insoluble SF /xylitol films had excellent mechanical properties while the SF / mannitol films were brittle. The mechanical property of SF/alcohol blend films were consistent with the human cornea in wet state.When the contents of xylitol were 10% and 20%, the blend films had high light transmittance which were similar to human cornea. In summary, the SF /xylitol film containing 10% xylitol provides a great potential to act as repairing materials for cornea.

Physical and Mechanical Properties of Chitosan Films Incorporated with Florida Mandarin Oil

2014 ◽  
Vol 881-883 ◽  
pp. 1153-1156 ◽  
Author(s):  
Yun Bin Zhang ◽  
Jing Wen Wang ◽  
Ping Ping Jiang ◽  
Yue Xia Li ◽  
Xiao Yu Liu
Keyword(s):  
Mechanical Properties ◽  
Contact Angle ◽  
Water Contact Angle ◽  
Water Solubility ◽  
Composite Films ◽  
Physical And Mechanical Properties ◽  
Water Contact ◽  
Elongation At Break ◽  
Alkali Leaching ◽  
Chitosan Composite

Florida mandarin oil-chitosan composite films were prepared with chitosan (CS), Florida mandarin oil (FMO) by casting-evaporation-alkali leaching method. Influences of FMO to mechanical properties, water contact angle, water-solubility of films were evaluated. The results demonstrated that decrease of film tensile strength was caused by addition of FMO. When FMO content was 4%, elongation at break reached the maximum (2.81±0.01%). Water contact angle and solubility of film increased with increase of FMO content, maximums were 81.80±0.09° and 1.51±0.02 mg/100 g H2O, respectively.

scholarly journals Characterization of Chitosan Film Incorporated with Curcumin Extract

Polymers ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 963
Author(s):  
Pornchai Rachtanapun ◽  
Warinporn Klunklin ◽  
Pensak Jantrawut ◽  
Kittisak Jantanasakulwong ◽  
Yuthana Phimolsiripol ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Antioxidant Activity ◽  
Infrared Spectroscopy ◽  
Water Vapor ◽  
Moisture Content ◽  
Water Solubility ◽  
Chitosan Film ◽  
Water Vapor Permeability ◽  
Vapor Permeability ◽  
Chitosan Films

Curcumin is a phenolic compound derived from turmeric roots (Curcuma longa L.). This research studied the effects of curcumin extract on the properties of chitosan films. The film characteristics measured included mechanical properties, visual aspects, color parameters, light transmission, moisture content, water solubility, water vapor permeability, infrared spectroscopy, and antioxidant activity. The results suggest that adding curcumin to chitosan-based films increases yellowness and light barriers. Infrared spectroscopy analysis showed interactions between the phenolic compounds of the extract and the chitosan, which may have improved the mechanical properties and reduced the moisture content, water solubility, and water vapor permeability of the films. The antioxidant activity of the films increased with increasing concentrations of the curcumin extract. This study shows the potential benefits of incorporating curcumin extract into chitosan films used as active packaging.

Mechanical Properties of TPNR-MWNTs-OMMT Hybrid Nanocomposites

2012 ◽  
Vol 501 ◽  
pp. 194-198 ◽  
Author(s):  
Mou'ad A. Tarawneh ◽  
Sahrim H. Ahmad ◽  
A.R. Shamsul Bahri ◽  
Yu Lih Jiun
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Aspect Ratio ◽  
Interfacial Adhesion ◽  
Hybrid Nanocomposites ◽  
X Ray Diffraction ◽  
Elongation At Break ◽  
X Ray ◽  
Maximum Value ◽  
The Matrix

This paper discusses the processing of a hybrid of TPNR-MWNTs-OMMT nanocomposites with different percentages of filler to determine the optimum mechanical properties of the hybrid nanocomposites. Three types of hybrid nanocomposites with various MWNTs-OMMT compositions (1%wt MWNTs+3%wt OMMT), (2%wt MWNTs+2%wt OMMT) and (3%wt MWNTs+1%wt OMMT) were prepared. The OMMT layers were found to be separated further with higher nanotubes content as exhibited by X-ray diffraction. The result of tensile test showed that tensile strength and Young's modulus increase in the presence of nanotubes and maximum value were obtained for the nanocomposites with highest nanotubes (3%wt) which increased about 33% and 36%, respectively compared with pure TPNR matrix. On other hand, the elongation at break considerably decreased with increasing the percentage of MWNTs. TEM micrographs revealed aspect ratio and fillers orientation in the TPNR matrix also promoted strongly to interfacial adhesion between fillers and the matrix which contributed significantly to the improvement of the mechanical properties

Preparation and Characterization of Starch Acetate/Polyvinyl Alcohol Foams

2014 ◽  
Vol 513-517 ◽  
pp. 193-196
Author(s):  
Xian Zhong Mo ◽  
Jian Bo Jiang ◽  
Xue Mei Huang ◽  
Feng Nv Yu ◽  
Jiang Ying Wu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polyvinyl Alcohol ◽  
Absorption Capacity ◽  
Starch Granules ◽  
X Ray Diffraction ◽  
Elongation At Break ◽  
X Ray ◽  
Moulding Process ◽  
Bubble Distribution

The starch-based foam was preprared by moulding process and studied the effects on the density, mechanical properties, hardness and water absorption capacity of the foams with different polyvinyl alcohol (PVA) contents. The microstructure and crystallization of the foam was observed through the scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results showed that the addition of PVA could better improve the material mechanical properties, the elongation at break was increased from 15.72% to 113.86% while the hardness was reduced from 37.3 to 16.7. The density of foam reached to the minimum value of 0.261 g/cm3, attaining to the maximum tensile strength of 1.08 Mpa. SEM and XRD showed that the compatility of starch and PVA was very good and the addition of PVA helped to improve the bubble distribution of foam and inhibit the retrogradation of starch granules.

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