Preparation and Research of KGM/Starch Composite Films

2011 ◽  
Vol 197-198 ◽  
pp. 1163-1166 ◽  
Author(s):  
Huang Lin ◽  
Qing Hua Chen ◽  
Wei Yan Li ◽  
Ming Hua Huang
Keyword(s):  
Tensile Strength ◽  
Food Packaging ◽  
Composite Films ◽  
Xrd Analysis ◽  
Optimal Level ◽  
Casting Method ◽  
Soil Suspension ◽  
Biodegradable Film ◽  
Polyethylene Films ◽  
Fracture Elongation

In this study, composite films were prepared with Konjac glucomannan (KGM) and Starch, In the process of preparation, add Lactic acid as modifier, deal with Ammonia as crosslinker. Pretreatment with microwave, and used solvent (water) casting method to prepare the KGM/starch composite films, and used orthogonal matrix L25 (5,6) to analyze the influencing factors. The results showed that: the tensile strength of films is 7.96~25.68Mpa, and the fracture elongation rate is 1.25~5.00%. It can reach the tensile strength requirements of films for food packaging materials (polyethylene films) and the optimal level is A2B4C3D3. By XRD analysis, KGM/starch composite films showed amorphous. Preliminary degradation experiments shows that the decomposition period of KGM/starch composite films is 2 weeks in the soil suspension. Therefore, KGM/starch composite films are potential biodegradable film materials.

scholarly journals The Influence of Starch Origin on the Properties of Starch Films: Packaging Performance

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1146
Author(s):  
Zuzanna Żołek-Tryznowska ◽  
Alicja Kałuża
Keyword(s):  
Tensile Strength ◽  
Free Energy ◽  
Surface Free Energy ◽  
Food Packaging ◽  
Energy Surface ◽  
Free Energy Surface ◽  
Casting Method ◽  
Starch Solution ◽  
Film Properties ◽  
Starch Films

Starch films can be used as materials for food packaging purposes. The goal of this study is to compare how the starch origin influence the selected starch film properties. The films were made from various starches such as that from maize, potato, oat, rice, and tapioca using 50%w of glycerine as a plasticizer. The obtained starch-based films were made using the well-known casting method from a starch solution in water. The properties of the films that were evaluated were tensile strength, water vapour transition rate, moisture content, wettability, and their surface free energy. Surface free energy (SFE) and its polar and dispersive components were calculated using the Owens-Wendt-Rabel-Kaelbe approach. The values of SFE in the range of 51.64 to 70.81 mJ∙m−2 for the oat starch-based film and the maize starch-based film. The films revealed worse mechanical properties than those of conventional plastics for packaging purposes. The results indicated that the poorest tensile strength was exhibited by the starch-based films made from oat (0.36 MPa) and tapioca (0.78 MPa) and the greatest tensile strength (1.49 MPa) from potato.

scholarly journals Synthesis of biodegradable films obtained from rice husk and sugarcane bagasse to be used as food packaging material

2019 ◽  
Vol 25 (4) ◽  
pp. 506-514 ◽  
Author(s):  
Himanshu Gupta ◽  
Harish Kumar ◽  
Mohit Kumar ◽  
Avneesh Kumar Gehlaut ◽  
Ankur Gaur ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Sugarcane Bagasse ◽  
Rice Husk ◽  
Food Packaging ◽  
Packaging Material ◽  
Biodegradable Films ◽  
Biodegradable Film ◽  
Biocomposite Film ◽  
Biopolymer Film ◽  
Lignocellulose Biomass

The current study stresses on the reuse of waste lignocellulose biomass (rice husk and sugarcane bagasse) for the synthesis of carboxymethyl cellulose (CMC) and further conversion of this CMC into a biodegradable film. Addition of commercial starch was done to form biodegradable film due to its capacity to form a continuous matrix. Plasticizers such as Glycerol and citric acid were used to provide flexibility and strength to the film. Biopolymer film obtained from sugarcane bagasse CMC showed maximum tensile strength and elongation in comparison to the film synthesized from commercial CMC and CMC obtained from rice husk. It has been observed that an increase in sodium glycolate/NaCl content in CMC imposed an adverse effect on tensile strength. Opacity, moisture content, and solubility of the film increased with a rise in the degree of substitution of CMC. Therefore, CMC obtained from sugarcane bagasse was better candidate in preparing biopolymer/biocomposite film.

scholarly journals Physical Properties of Composite Films from Tilapia Skin Collagen with Pachyrhizus Starch and Rambutan Peel Phenolics

Marine Drugs ◽  
2019 ◽  
Vol 17 (12) ◽  
pp. 662
Author(s):  
Yongliang Zhuang ◽  
Shiyan Ruan ◽  
Hanghang Yao ◽  
Yun Sun
Keyword(s):  
Tensile Strength ◽  
Physical Properties ◽  
Food Packaging ◽  
Composite Films ◽  
Water Vapor Permeability ◽  
Amorphous Structure ◽  
Vapor Permeability ◽  
Scanning Calorimetry ◽  
Active Food Packaging ◽  
Skin Collagen

Different composite films composed of tilapia skin collagen (TSC) with Pachyrhizus starch (PS) or rambutan peel phenolics (RPP) were prepared, and the physical properties of these films were determined. The effects of PS and RPP on TSC films were investigated, and our results indicated that PS and RPP could improve the physical properties of TSC films. Opacity and film thickness showed an enhanced trend with increasing PS and RPP contents in TSC films, whereas solubility in water, elongation-at-break (EAB), and water vapor permeability (WVP) showed declining trends. TSC film with 10% PS and 0.5% RPP had the highest tensile strength, and the tensile strength dropped drastically when the content of PS and RPP increased. The light transmittances of the films could decrease with the incorporation of PS and RPP. Differential scanning calorimetry (DSC) demonstrated that the addition of PS and RPP improved the thermal stability of TSC films. In addition, X-ray diffraction indicated that the crystallinity of the films decreased and the amorphous structure of the films tended to become more complex with the addition of PS and RPP. As shown by fourier transform infrared spectroscopy (FTIR) analysis, PS and RPP can strongly interact with TSC, resulting in a modification of its structure. Scanning electron microscope (SEM) analysis showed that there was a good compatibility between TSC, PS, and RPP. The results indicated that TSC film incorporated with 10% PS and 0.5% RPP was an effective method for improve the physical properties of the film. TSC–PS–RPP composite films can be used not only in biomedical applications, but also as active food packaging materials.

scholarly journals New Paradigm On The Mechanical Properties of In-Situ Formed By Al/TiB2 and Al/TiB2/Cu MMCs

2022 ◽  
Author(s):  
Rajaravi C ◽  
Gobalakrishnan B ◽  
AMALA MITHIN MINTHER SINGH A ◽  
ARUL FRANCO P ◽  
SHARUN V
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Tensile Strength ◽  
Metal Matrix ◽  
Xrd Analysis ◽  
New Paradigm ◽  
Casting Method ◽  
Optical Micrograph ◽  
Tib2 Particles

Abstract In the current study, in-situ formed Al/6wt. % TiB2 and Al/6wt. % TiB2/4wt. % Cu Metal Matrix were investigated. Composites were made using the sir casting method, and both composites were compared. The composite is synthesized by combining two precursor salts, Potassium Hexa Fluro Titanate (KBF4) and potassium tetrafluoroborate (K2TiF6), with stoichiometric compositions corresponding to 6 percent by weight of TiB2 particles, with A356 aluminium melt at 820° C, speed 300 rpm, and holding time 30 minutes. Following that, 4wt. % Cu powder was added to the composite melt, which was then poured into the permanent mould. Mechanical properties tests such as tensile strength, hardness, and fracture toughness were carried out in accordance with ASTM guidelines. The mechanical properties of the in-situ formed Al/6wt. % TiB2/4wt. % Cu composite outperform those of the Al/6wt.% TiB2 composite and base metal. Optical micrograph and XRD analysis both confirm the presence of TiB2 and Cu particles.

scholarly journals Development of Intelligent Food Packaging with Rosa Sp Extract

2019 ◽  
Vol 9 (1) ◽  
pp. 5957-5961
Keyword(s):  
Tensile Strength ◽  
Physical Properties ◽  
Food Packaging ◽  
Petri Dish ◽  
Chitosan Solution ◽  
Starch Solution ◽  
Acid Base ◽  
Biodegradable Film ◽  
Color Changes ◽  
Different Temperatures

Rosa extract containing anthocyanin was integrated into starch-chitosan based film with glycerol as a plasticizer to develop a biodegradable film with acid base dye indicator. Anthocyanin is a pH sensitive compound that changes color when exposed to different pH. The color changes varied depends on the pH. A film aliquot was prepared by mixing rose extract, starch solution, chitosan solution with glycerol. The aliquot was casted in a petri dish at 40°C for 2days. Several tests were done to determine the biological, chemical and physical properties of the film. The tensile strength of the film was found to be in the range of 4.17MPa and 5.42MPa. The film was placed at 2 different temperatures for 4 days to determine the performance of the films and the effects of the temperature towards the film.

scholarly journals Active Double-Layered Films Enriched with AgNPs in Great Water Dock Root and Pu-Erh Extracts

Materials ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 6925
Author(s):  
Ewelina Jamróz ◽  
Agnieszka Cabaj ◽  
Lesław Juszczak ◽  
Joanna Tkaczewska ◽  
Małgorzata Zimowska ◽  
...  
Keyword(s):  
Food Packaging ◽  
Composite Films ◽  
Nanocomposite Films ◽  
Uv Absorbance ◽  
Surface Plasma ◽  
Casting Method ◽  
Surface Plasma Resonance ◽  
Brown Colour ◽  
Food Borne ◽  
Antimicrobial And Antioxidant Activity

A novel, eco-friendly, and biocompatible method was applied to form silver nanoparticles (AgNPs) in great water dock (Lapathi radix) (KB) and pu-erh (Camellia sinensis) (PE) extracts. The surface plasma resonance peak of green synthesized AgNPs at 451.8 nm for AgNPs+KB and 440.8 nm for AgNPs+PE was observed via spectral analysis of UV absorbance. In this study, double-layered biopolymer films (FUR/CHIT+HGEL) with AgNPs incorporated in KB solution (AgNPs+KB) and AgNPs in PE solution (AgNPs+PE), were successfully prepared using the casting method. The SEM, XRD, zeta potential and size analyses confirmed the presence of AgNP in the films. The addition of AgNPs in plant extracts improved antimicrobial and antioxidant activity and thermal stability, whereas WVTR experienced a decrease. The nanocomposite films’ orange-brown colour may aid in the protection of food products against UV rays. The composite films demonstrated antibacterial activity against food-borne pathogens and may offer potential in food packaging applications.

scholarly journals Effect of Potassium Sorbate and Ultrasonic Treatment on the Properties of Fish Scale Collagen/Polyvinyl Alcohol Composite Film

Molecules ◽  
2019 ◽  
Vol 24 (13) ◽  
pp. 2363 ◽  
Author(s):  
Xue Liang ◽  
Shiyi Feng ◽  
Saeed Ahmed ◽  
Wen Qin ◽  
Yaowen Liu
Keyword(s):  
Tensile Strength ◽  
Polyvinyl Alcohol ◽  
Composite Film ◽  
Ultrasonic Treatment ◽  
Food Packaging ◽  
Composite Films ◽  
Antibacterial Properties ◽  
Light Transmittance ◽  
Potassium Sorbate ◽  
Fish Scale

Composite films containing different amounts of potassium sorbate (KS) were prepared by using fish scale collagen (Col) and polyvinyl alcohol (PVA). Fourier transform infrared spectroscopy (FTIR), light transmittance, mechanical, water vapor transmission rate (WVTR), and the antibacterial properties of the composite films were analyzed. The results showed that the addition of Col significantly reduced the light transmittance of the composite film, but KS had no significant effect on the light transmission. The tensile strength decreased first and then increased with the addition of KS, while the WVTR increased first and then decreased. The composite film exhibited a certain degree of antibacterial properties against E. coli and S. aureus. In addition, we found that ultrasonic treatment reduced the WVTR, and also improved tensile strength and elongation at break of the composite films, but had no significant effect on other properties. The KS/Col/PVA films have the potential to be used as antimicrobial food packaging.

Preparation and Properties of Poly(L-Lactid Acid)/Organo-Montmorillonite Composites by Solution Casting Method

2015 ◽  
Vol 731 ◽  
pp. 578-583
Author(s):  
Ming Jun Niu ◽  
Rui Xia Duan ◽  
Li Xia Wang ◽  
Xiao Qing Shen ◽  
Kai Guo ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Composite System ◽  
Composite Films ◽  
Solution Casting ◽  
Casting Method ◽  
Elongation At Break ◽  
Steady Level ◽  
Solution Casting Method ◽  
Degree Of Order ◽  
Thermal Stability Of

PLLA / OMMT composite films were prepared through solution casting method, in which chloroform was used as solvent. Mechanical, thermal and crystallization properties of neat PLLA and PLLA / OMMT composites films were investigated as well as morphology through scanning electron microscope. It was shown that tensile strength of PLLA / OMMT composite films gradually increased with increasing OMMT content, but reduced when more filler were added. Loading of 2wt% of OMMT seemed to benifit PLLA in tensile strength most. With the increase of montmorillonite content, the elongation at break of PLLA decreased first and then reached to a steady level. When compared with pure PLLA, the composite system showed decreased spherulite size, lower degree of order and an increase in the number of grains. Thermal analysis has proved that the addition of OMMT greatly enhanced crystability and thermal stability of PLLA.

scholarly journals Characterization and Optimization of Persian Gum/Whey Protein Bionanocomposite Films Containing Betanin Nanoliposomes for Food Packaging Utilization

2021 ◽  
Author(s):  
Zahra Ghasempour ◽  
Sepideh Khodaivandi ◽  
Hossein Ahangari ◽  
Hamed Hamishehkar ◽  
Sajed Amjadi ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Whey Protein ◽  
Food Packaging ◽  
Antioxidative Activity ◽  
Antioxidant Properties ◽  
Xrd Analysis ◽  
Protein Isolate ◽  
Life Extension ◽  
Bionanocomposite Films ◽  
Central Composite

Abstract In this study, composite packaging films were produced from relatively inexpensive materials including whey protein isolate (WPI) and Persian gum (PG), supplemented with betanin nanoliposomes (NLPs). Using response surface methodology (central composite design), we investigated the effects of two variables (PG [0–2% w/v] and betanin NLPs’ [0–10% w/v] content) on the physico-mechanical and antioxidant properties of the film treatments. Afterward, the optimal treatment was evaluated for structural and antimicrobial characteristics. The film samples' permeability to water vapor decreased with the addition of NLP (from 7.38 to 5.46 g/Pa.s.m) but increased with PG incorporation; decreased solubility was observed when either substance was added. Mechanical properties like Young’s modulus and tensile strength were weakened by PG addition, but the incorporation of NLPs led to pronounced tensile strength. XRD analysis revealed improved crystallinity through NLPs’ addition. The presence of NLPs in the nanocomposite film resulted in an elevated level of antibacterial activity against Staphylococcus aureus, while the addition of both PG and betanin NLPs led to improved antioxidative activity (63.45%). Considering the results, PG/WPI films loaded with betanin NLPs could be introduced in active packaging applications for the shelf life extension of perishable food products.

Preparation and Characterization of poly(L-lactide) /poly (ε-caprolactone) Composite Films for Food Packaging Application

2013 ◽  
Vol 750-752 ◽  
pp. 845-848 ◽  
Author(s):  
Ji Yi Yang ◽  
Yu Yue Qin ◽  
Jian Xin Cao ◽  
Ming Wei Yuan ◽  
Shi Qi Liu ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Composite Film ◽  
Food Packaging ◽  
Composite Films ◽  
Elongation At Break

Poly (L-lactide) (PLLA) and poly (ε-caprolactone) (PCL) were produced by solution mixing and cast into films. The films were characterized by morphological, mechanical, and barrier behavior tests to evaluate the effect of the PCL. The micrographs of the fractured surfaces showed the morphology of the phase separated system, with the dispersed PCL phase higher than 30%. The elongation at break of PLLA was improved significantly (p<0.05) in the blends while the tensile strength decreased significantly (p<0.05) with increase of PCL content. WVP of PLLA/PCL films significantly decreased (p< 0.05) by blending with PCL. When the ratio of PLLA/PCL increased from 100/0 to 50/50, WVP of PLLA/PCL films decreased from 1.85±0.15 (×10-14kgm/m2sPa) to 1.27±0.06 (×10-14kgm/m2sPa). The results showed that PLLA/PCL blend can be a novel composite film for food packaging applications.

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