KARAKTERISASI FILM KOMPOSIT ALGINAT DAN KITOSAN

CHARACTERIZATION OF ALGINATE AND CHITOSAN COMPOSITE FILM. Due to the specific characteristics of (thin) films, the use of polymer films in various aplications has singnificantly increased. Alginate and chitosan are natural polymers, which have potential as a raw material for the manufacture of composite films. This paper presents the preparation and characterization of alginate, chitosan and chitosan-alginate composite films. The film characterization included permeability test, degree of swelling, mechanical property, morphology (by SEM), and surface chemistry (by FTIR). The results showed that alginate films have a higher permeability and degree of swelling (DS) than chitosan films. Both permeability and DS decreased with increasing concentration for both alginate and chitosan films. DS experiments showed that the films have the highest DS in water followed by ethanol 95% and ethanol >99.9%, respectively. The mechanical strength of chitosan films was larger than alginate films. Alginate-chitosan composite films prepared by layer by layer method showed better characteristics than the composite films prepared by blending of alginate and chitosan solutions. Meningkatnya aplikasi film polimer di berbagai industri tidak terlepas dari keunggulan yang dimiliki. Alginat dan kitosan merupakan polimer alam yang mempunyai potensi sebagai bahan dasar pembuatan film komposit. Pada penelitian ini dilakukan pembuatan dan karakterisasi film komposit berbasis alginat dan kitosan. Karakterisasi film yang dilakukan meliputi uji: permeabilitas, derajat swelling, mekanik, morfologi (dengan SEM), dan struktur kimia permukaan (dengan FTIR). Hasil penelitian menunjukkan bahwa film alginat mempunyai nilai permeabilitas maupun derajat swelling yang lebih tinggi dibanding dengan film kitosan. Baik pada kitosan maupun alginat memberikan fenomena bahwa semakin besar konsentrasi larutan maka semakin kecil nilai permeabilitas maupun derajat swelling, dengan derajat swelling terhadap air adalah yang paling besar kemudian diikuti oleh ethanol teknis (± 95%) dan yang terkecil adalah ethanol PA (> 99,9%). Kekuatan mekanik film kitosan lebih besar dibanding dengan film alginat. Film komposit alginat-kitosan yang dibuat dengan metode layer by layer memberikan karakteristik yang lebih baik dibanding dengan film komposit yang dibuat dengan pencampuran larutan alginat dan larutan kitosan.

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Synthesis of carbon nanotube/epoxy composite films with a high nanotube loading by a mixed-curing-agent assisted layer-by-layer method and their electrical conductivity

Carbon ◽

10.1016/j.carbon.2010.02.016 ◽

2010 ◽

Vol 48 (7) ◽

pp. 2057-2062 ◽

Cited By ~ 65

Author(s):

Qing-Ping Feng ◽

Jiao-Ping Yang ◽

Shao-Yun Fu ◽

Yiu-Wing Mai

Keyword(s):

Electrical Conductivity ◽

Carbon Nanotube ◽

Epoxy Composite ◽

Composite Films ◽

Layer By Layer ◽

Curing Agent ◽

Layer Method

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Synthesis and characterization of Cu-BTC metal–organic frameworks onto lignocellulosic fibers by layer-by-layer method in aqueous solution

Cellulose ◽

10.1007/s10570-019-02839-6 ◽

2019 ◽

Vol 27 (3) ◽

pp. 1733-1744 ◽

Cited By ~ 2

Author(s):

Zhiqiang Li ◽

Naruhito Hori ◽

Akio Takemura

Keyword(s):

Aqueous Solution ◽

Metal Organic Frameworks ◽

Synthesis And Characterization ◽

Layer By Layer ◽

Lignocellulosic Fibers ◽

Layer Method ◽

Metal Organic

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Synthesis and characterization of water-dispersed CdSe/CdS core-shell quantum dots prepared via layer-by-layer method capped with carboxylic-functionalized poly(vinyl alcohol)

Materials Research ◽

10.1590/s1516-14392014005000060 ◽

2014 ◽

Vol 17 (suppl 1) ◽

pp. 133-140 ◽

Cited By ~ 8

Author(s):

Fábio Pereira Ramanery ◽

Alexandra Ancelmo Piscitelli Mansur ◽

Herman Sander Mansur

Keyword(s):

Quantum Dots ◽

Vinyl Alcohol ◽

Synthesis And Characterization ◽

Poly Vinyl Alcohol ◽

Core Shell ◽

Layer By Layer ◽

Layer Method

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Preparation and characterization of brewer’s spent grain protein-chitosan composite films

Journal of Food Science and Technology ◽

10.1007/s13197-015-1941-x ◽

2015 ◽

Vol 52 (11) ◽

pp. 7549-7555 ◽

Cited By ~ 11

Author(s):

Ji-Hyeon Lee ◽

Ji-Hyun Lee ◽

Hyun-Ju Yang ◽

Kyung Bin Song

Keyword(s):

Composite Films ◽

Grain Protein ◽

Brewer’S Spent Grain ◽

Spent Grain ◽

Chitosan Composite

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Development and Characterization of Novel Active Chitosan Films Containing Fennel and Peppermint Essential Oils

Coatings ◽

10.3390/coatings10100936 ◽

2020 ◽

Vol 10 (10) ◽

pp. 936 ◽

Cited By ~ 1

Author(s):

Ting Liu ◽

Jingfan Wang ◽

Fumin Chi ◽

Zhankun Tan ◽

Liu Liu

Keyword(s):

Essential Oil ◽

Composite Films ◽

Environmental Scanning Electron Microscopy ◽

Chitosan Film ◽

Environmental Scanning ◽

The Novel ◽

Scanning Calorimetry ◽

Chitosan Films ◽

Water Swelling

The effects of fennel essential oil (FEO) and peppermint essential oil (PEO) on chitosan-based films were evaluated in this study. The results showed that the addition of FEO and PEO slightly increased the density and thickness, while significantly decreasing the moisture content, water swelling, and solubility properties. The color values (L, a, b, ΔE and whiteness index (WI)) of the composite films containing FEO and PEO changed obviously with a tendency toward yellowness, which was beneficial in resisting food decomposition caused by ultraviolet light. The differential scanning calorimetry (DSC) and fourier-transform-infrared (FTIR) results indicated that the addition of FEO and PEO affected the structure of the chitosan films, while the interaction between the chitosan and polyphenols in FEO and PEO established new hydrogen bonds and improved the thermal stability. The environmental scanning electron microscopy (ESEM) illustrated that the surfaces of the composite films containing FEO and PEO were smooth, but the cross-section was rougher than in pure chitosan film. Furthermore, the composite films containing FEO and PEO exhibited prominent antioxidant activity. In short, the novel active chitosan-based films with incorporated FEO and PEO present broad application prospects in fresh-cut meat or vegetable packaging.

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Characterization of Chitosan Films Incorporated with Different Substances of Konjac Glucomannan, Cassava Starch, Maltodextrin and Gelatin, and Application in Mongolian Cheese Packaging

Coatings ◽

10.3390/coatings11010084 ◽

2021 ◽

Vol 11 (1) ◽

pp. 84

Author(s):

Sijun Ma ◽

Yuanrong Zheng ◽

Ran Zhou ◽

Ming Ma

Keyword(s):

Composite Film ◽

Composite Films ◽

Water Vapor Permeability ◽

Cassava Starch ◽

Konjac Glucomannan ◽

Vapor Permeability ◽

Elongation At Break ◽

Chitosan Composite ◽

Storage Characteristics

Four kinds of edible composite films based on chitosan combined with additional substances (konjac glucomannan, cassava starch, maltodextrin and gelatin) and the addition of lysozyme were prepared and used as packaging materials for Mongolian cheese. The prepared composite films were evaluated using scanning electron microscopy and Fourier transform infrared spectroscopy. The physicochemical properties of all chitosan composite films, including thickness, viscosity, opacity, color, moisture content, water vapor permeability, tensile strength and elongation at break, were measured. The results show that Konjac glucomannan–chitosan composite film presented the strongest mechanical property and highest transparency. The cassava starch–chitosan composite film presented the highest water barrier property. The study on the storage characteristics of Mongolian cheese was evaluated at 4 °C. The results show that the cheese packaging by cassava starch–chitosan composite film presented better treatment performance in maintaining the quality, reducing weight loss and delayering microbial growth.

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Characterization of Aloe vera-chitosan composite films and their use for reducing the disease caused by fungi in papaya Maradol

Journal of Food Science and Technology ◽

10.1007/s13197-018-3397-2 ◽

2018 ◽

Vol 55 (12) ◽

pp. 4747-4757 ◽

Cited By ~ 5

Author(s):

Keila Monzón-Ortega ◽

Miguel Salvador-Figueroa ◽

Didiana Gálvez-López ◽

Raymundo Rosas-Quijano ◽

Isidro Ovando-Medina ◽

...

Keyword(s):

Composite Films ◽

Aloe Vera ◽

Chitosan Composite

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Self-Assembly of Large Scale CdS/TiO2 Film Photocatalyst

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.512-515.1692 ◽

2012 ◽

Vol 512-515 ◽

pp. 1692-1698 ◽

Cited By ~ 2

Author(s):

Chun Xiang Li ◽

Zhao Hua Jiang ◽

Zhong Ping Yao

Keyword(s):

Photoelectron Spectroscopy ◽

Self Assembly ◽

Large Scale ◽

Crystal Size ◽

Composite Films ◽

Atomic Ratio ◽

Layer By Layer ◽

Spectroscopy Analysis ◽

X Ray ◽

Layer Method

CdS/TiO2 composite films with different Cd:Ti atomic ratio were prepared by a new straightforward particulate layer-by-layer method. Titanium dihydroxide and thiourea were used as precursors. Raman and X-ray photoelectron spectroscopy analysis for the composite films revealed that the TiO2 formed from titanium precursor retarded the crystal growth of CdS. Luminescence and UV–vis absorption spectra investigation showed that emission and absorption band of CdS/TiO2 blue shifted as crystal size of CdS decreased. Furthermore, hydrogen formation curves revealed that hydroxyl of CdS/TiO2 films plays an important role in water splitting reaction under both UV and visible light irradiations.

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