Upsized Vortex Fluidic Device Enhancement of Mechanical Properties and the Microstructure of Biomass-Based Biodegradable Films

The biodegradable films of the blend of pregelatinized starch and poly(butylene succinate) were prepared by using mixture of water and glycerin as plasticizing agent. The mechanical properties, thermal performance of the films and molecular weight of PBS were investigated. Gel permeation chromatography (GPC) results indicate that the molecular weight of PBS has no obvious change in spite of the presence of water. Starch can be well plasticized and uniformly dispersed in PBS matrix without obvious particles and agglomeration observed. When starch content was 10 wt% of total resin, the mechanical properties of the blend film is similar to that of pure PBS. With the further increase in the starch content, the mechanical properties were reduced; the crystallization temperature of the blend increased and the crystallization time is shortened. The thermogravimetric analysis found that pregelatinized starch and PBS decomposed in their respective temperature, the thermal stability of materials decreased.

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Development of Biodegradable Films Based on Durian Seed Starch

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.506.311 ◽

2012 ◽

Vol 506 ◽

pp. 311-314 ◽

Cited By ~ 3

Author(s):

W. Pimpa ◽

C. Pimpa ◽

P. Junsangsree

Keyword(s):

Mechanical Properties ◽

Water Vapor ◽

Food Processing ◽

Corn Starch ◽

Water Vapor Permeability ◽

Cassava Starch ◽

Raw Material ◽

Vapor Permeability ◽

Biodegradable Films ◽

Durian Seed

Fresh durian seed consists largely of starch and can be considered such a suitable raw material for producing biodegradable films. The aim of this work was to develop biodegradable films based on durian seed starch (DSS) and to characterize their water barrier, microscopic and mechanical properties. DSS films were prepared by casting with glycerol as plasticizer. Corn starch and cassava starch, commonly used in food processing, were chosen to prepare films and compare their properties to the DSS-based films. Using a second biopolymer, carboxymethyl cellulose (CMC), in the DSS based composite has been studied as a strategy to improve their important properties. Water vapor permeability and elongation values were improved significantly (p<0.05) when 5% (w/w DSS) CMC was incorporated. Therefore, preparing biodegradable films from DSS is a new alternative for using this raw material which is sometimes much cheaper than commercial starches

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Mechanical properties decay and morphological behaviour of biodegradable films for agricultural mulching in real scale experiment

Polymer Degradation and Stability ◽

10.1016/j.polymdegradstab.2006.02.017 ◽

2006 ◽

Vol 91 (11) ◽

pp. 2801-2808 ◽

Cited By ~ 74

Author(s):

Giacomo Scarascia-Mugnozza ◽

Evelia Schettini ◽

Giuliano Vox ◽

Mario Malinconico ◽

Barbara Immirzi ◽

...

Keyword(s):

Mechanical Properties ◽

Biodegradable Films ◽

Scale Experiment ◽

Real Scale

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The effect of drying on the mechanical properties and structure of biodegradable films

Proceedings of 21th International Drying Symposium ◽

10.4995/ids2018.2018.7624 ◽

2018 ◽

Author(s):

Gabriela Silveira da Rosa ◽

Sai Vanga ◽

Yvan Gariepy ◽

Vijaya Raghavan

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Convective Drying ◽

Vacuum Drying ◽

Drying Rate ◽

Biodegradable Films ◽

Film Forming ◽

Rate Period ◽

Bovine Gelatin ◽

Kinetics Of

The aim of this study was to investigate the effect of convective and vacuum drying on properties of biodegradable films. The film-forming solutions were prepared with bovine gelatin and carrageenan. The films solutions were dried in convective and vacuum dryers at temperatures of 40, 50 and 60 oC. The results of convective drying kinetics of biofilms showed a constant drying rate period followed by a falling drying rate period. The results of thickness showed dependence with moisture content present in films.Carrageenan films showed promising results, with high values of tensile strength and elongation for convective drying at 60 oC. Keywords: gelatin; carrageenan; drying; biofilm

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Investigation of the Orientational Mechanical Properties of Biodegradable Extrusion Films Based on Polyolefins and Beet Pulp

10.21741/9781644901755-26 ◽

2022 ◽

Author(s):

A.M. Kuzmin

Keyword(s):

Mechanical Properties ◽

Polymer Melt ◽

Twin Screw Extruder ◽

Biodegradable Films ◽

Screw Extruder ◽

Film Extrusion ◽

Biodegradable Composites ◽

Twin Screw ◽

Beet Pulp ◽

Extrusion Method

Abstract. The article discusses the possibility of obtaining biodegradable films based on polyolefins and beet pulp by the extrusion method. Biodegradable composites of two mixes with 15% and 25% beet pulp content have been obtained. Compounding was carried out on a twin-screw extruder, and then samples of biodegradable films were obtained by cast film extrusion. The influence of the vegetable filler particles’ orientation on the composites mechanical properties has been studied. It has been shown that composites mechanical properties significantly increase in the direction of polymer melt stretching.

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Effect of Cellulose Nanocrystals from Different Lignocellulosic Residues to Chitosan/Glycerol Films

Polymers ◽

10.3390/polym11040658 ◽

2019 ◽

Vol 11 (4) ◽

pp. 658 ◽

Cited By ~ 5

Author(s):

de Andrade ◽

Nery ◽

de Santana e Santana ◽

Leal ◽

Rodrigues ◽

...

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Moisture Content ◽

Natural Resources ◽

Wheat Bran ◽

Diameter Ratio ◽

Coconut Shell ◽

Biodegradable Films ◽

Lignocellulosic Residues ◽

Corn Husk

Interest in nanocellulose obtained from natural resources has grown, mainly due to the characteristics that these materials provide when incorporated in biodegradable films as an alternative for the improvement of the properties of nanocomposites. The main purpose of this work was to investigate the effect of the incorporation of nanocellulose obtained from different fibers (corncob, corn husk, coconut shell, and wheat bran) into the chitosan/glycerol films. The nanocellulose were obtained through acid hydrolysis. The properties of the different nanobiocomposites were comparatively evaluated, including their barrier and mechanical properties. The nanocrystals obtained for coconut shell (CS), corn husk (CH), and corncob (CC) presented a length / diameter ratio of 40.18, 40.86, and 32.19, respectively. Wheat bran (WB) was not considered an interesting source of nanocrystals, which may be justified due to the low percentage of cellulose. Significant differences were observed in the properties of the films studied. The water activity varied from 0.601 (WB Film) to 0.658 (CH Film) and the moisture content from 15.13 (CS Film) to 20.86 (WB Film). The highest values for tensile strength were presented for CC (11.43 MPa) and CS (11.38 MPa) films, and this propriety was significantly increased by nanocellulose addition. The results showed that the source of the nanocrystal determined the properties of the chitosan/glycerol films.

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Biodegradable films made from raw and acetylated cassava starch

Brazilian Archives of Biology and Technology ◽

10.1590/s1516-89132004000300019 ◽

2004 ◽

Vol 47 (3) ◽

pp. 477-484 ◽

Cited By ~ 28

Author(s):

Fábio D. S. Larotonda ◽

Kátia N. Matsui ◽

Valdir Soldi ◽

João B. Laurindo

Keyword(s):

Mechanical Properties ◽

Organic Solvents ◽

Room Temperature ◽

Glass Plate ◽

Cassava Starch ◽

Biodegradable Films ◽

Starch Acetate ◽

Starch Gelatinization ◽

Two Alternatives

Studies were carried out to produce biodegradable films from cassava starch. Two alternatives were investigated. In the first, films were obtained by starch gelatinization followed by thermopressing and glycerol was used at different concentrations as a plasticizer. In the second, starch acetate films were obtained by solubilization of cassava starch acetate in organic solvents, followed by casting on a glass plate and drying at room temperature. The films obtained by gelatinization were transparent and resistant to traction. The starch acetate films were also transparent but breakable. The use of these starch acetate films in paper impregnation improved the mechanical properties of the paper.

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Use of Chia by-Products Obtained from the Extraction of Seeds Oil for the Development of New Biodegradable Films for the Agri-Food Industry

Foods ◽

10.3390/foods10030620 ◽

2021 ◽

Vol 10 (3) ◽

pp. 620

Author(s):

Nuria Muñoz-Tebar ◽

Ana Molina ◽

Manuel Carmona ◽

María Isabel Berruga

Keyword(s):

Mechanical Properties ◽

Economic Value ◽

Water Vapor Permeability ◽

Edible Films ◽

Vapor Permeability ◽

Biodegradable Films ◽

Biodegradable Film ◽

Production And Consumption ◽

Different Types ◽

By Products

Chia oil production and consumption have increased in recent years, producing a large number of by-products that had low utility or economic value for the industry. In this study, a biodegradable film was successfully prepared from mucilage extracted from defatted chia flour. The physical-chemical, optical, water vapor permeability (WVP), and mechanical properties of films made with two different types of chia matrixes (defatted flour and whole seeds) were determined. In general, defatted chia flour films exhibited a slightly reddish and yellowish color but still transparent in appearance, were good visible light barriers, and had better mechanical properties than films made with whole seeds. They also have greater WVP values than synthetic films such as low-density polyethylene. The results of the present study demonstrated that defatted chia flour can be used in producing edible films with improved quality characteristics.

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EFFECT OF PLASTICIZERS ON MECHANICAL PROPERTIES OF EDIBLE FILM FROM JANENG STARCH – CHITOSAN

Jurnal Natural ◽

10.24815/jn.v16i2.5125 ◽

2016 ◽

Vol 16 (2) ◽

pp. 45-49

Author(s):

Narlis Juandi ◽

Rahmi Rahmi ◽

Hira Helwati

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Palm Oil ◽

Edible Films ◽

Ftir Spectra ◽

Edible Film ◽

Biodegradable Films ◽

Elongation At Break

The interest in the development of edible and biodegradable films has increased because it is every day more evident that non degradable are doing much damage to the environment. In this research, edible films were based on blends of janeng starch in different proportions, added of palm oil or glycerol, which were used as plasticizers. The objective was to study the effect of two different plasticizers, palm oil and glycerol of edible film from janeng starch–chitosan on the mechanical properties and FTIR spectra. Increasing concentration of glycerol as plasticizer resulted tend to increased tensile strength and elongation at break. The tensile strength and elongation at break values for palm oil is higher than glycerol as plasticizer at the same concentration. FTIR spectra show the process of making edible film from janeng starch–chitosan with palm oil or glycerol as plasticizers are physically mixing in the presence of hydrogen interactions between chains.

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Methylation of guar gum for improving mechanical and barrier properties of biodegradable packaging films

Scientific Reports ◽

10.1038/s41598-019-50991-7 ◽

2019 ◽

Vol 9 (1) ◽

Cited By ~ 1

Author(s):

Jyoti Tripathi ◽

Rupali Ambolikar ◽

Sumit Gupta ◽

Dheeraj Jain ◽

Jitendra Bahadur ◽

...

Keyword(s):

Mechanical Properties ◽

Food Packaging ◽

Guar Gum ◽

Transmission Rate ◽

Average Molecular Weight ◽

Barrier Properties ◽

Partial Replacement ◽

Radius Of Gyration ◽

Biodegradable Films ◽

Gradual Improvement

Abstract Improving functional properties of biopolymers for use as environment friendly packaging is an area of current interest. Biodegradable films with improved barrier and mechanical properties were prepared from methylated guar gum. Methylation resulted in structural modification of guar gum (GG) promoting greater crystallization thereby enhancing thermal stability towards decomposition. Reduction in radius of gyration (Rg), weight average molecular weight (Mw), and an increase in polydispersity index (PDI) were also observed due to methylation. Methylated guar gum (MGG) films exhibited 40% lower water vapor transmission rate (WVTR) as compared to control purified guar gum (PGG) films. Films prepared by partial replacement of PGG with MGG (10, 25, 50, 75 and 100% w/w) showed gradual improvement in percent elongation. The study gives an insight on the role of methylation in enhancing barrier and mechanical properties of GG based biodegradable films for possible application in food packaging.

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