Improvement of mechanical properties and thermal stability of biodegradable rice starch–based films blended with carboxymethyl chitosan

Suriyatem, Rungsiri; Auras, Rafael; Rachtanapun, Pornchai

doi:10.1016/j.indcrop.2018.05.047

Cited by 100 publications

(51 citation statements)

References 38 publications

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“…The diffraction peak of TPS at around 2 = 19.5 ∘ is attributed to the typical B-type crystals of starch, which is in agreement with previous publications. [55][56][57] When DAS was incorporated into TPS, a clear decrease of the peak intensity was seen in the XRD patterns, demonstrating that crosslinking reactions between starch and DAS limited the molecular chain segment movements, restrained their crystallization process and thus resulted in reducing the crystallinity. 55,56 In the TPS/DAS/MMT film, the diffraction peak of MMT was shifted to lower angles (2 = 4.3 ∘ ).…”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 99%

Fabrication and properties of thermoplastic starch/montmorillonite composite using dialdehyde starch as a crosslinker

Peidayesh

Ahmadi

Khonakdar

et al. 2020

Polymer International

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The poor mechanical properties and high water solubility of biodegradable thermoplastic starch (TPS) represent the main disadvantages of TPS in many applications. In this work, TPS film was prepared from a water solution of corn starch modified by 5 wt% dialdehyde starch (DAS) as crosslinking agent and 3 wt% montmorillonite (MMT) as reinforcing additive. Interactions occurring in the TPS films were investigated by Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, XRD, DSC, dynamic mechanical thermal analysis (DMTA) and TGA. The results obtained fom FTIR spectroscopy and DSC suggest the formation of hydrogen bond interactions between the hydroxyl group of starch, DAS, the MMT layers and glycerol. DMTA indicated that the relaxation of films with DAS and MMT appears in a higher and broader temperature range due to the starch backbone stiffness; the extreme increase in the storage modulus confirmed the suggested interactions. The determination of the weight loss of the films in water indicated a significant increase of the water resistance of TPS due to incorporation of DAS and MMT. Changes in mechanical properties of the films containing DAS and clay were determined, showing a substantial increase in tensile strength from 2.7 to 6.7 MPa, while Young's modulus increased by 15 times for TPS modified with 5% DAS and 3% MMT. Therefore, the outcomes of this study confirmed that DAS is a suitable biomacromolecule crosslinker for starch and can significantly enhance TPS and TPS/MMT properties. © 2019 Society of Chemical Industry

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Section: X-ray Diffraction (Xrd)mentioning

confidence: 99%

Fabrication and properties of thermoplastic starch/montmorillonite composite using dialdehyde starch as a crosslinker

Peidayesh

Ahmadi

Khonakdar

et al. 2020

Polymer International

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“…The swelling ratio was determined according to the method reported by Suriyatem et al 5 with slight modifi cations. For each fi lm three squares (1.5 cm x 1.5 cm) were prepared and placed for two weeks in desiccator to dry.…”

Section: Swelling Ratiomentioning

confidence: 99%

Hydrophilic films based on starch and carboxymethyl starch

Wilpiszewska

2019

Polish Journal of Chemical Technology

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The hydrophilic films based on starch and carboxymethyl starch (CMS) were obtained using cast method. The effect of CMS content on the physicochemical properties of prepared films were evaluated. With increasing content of starch derivative the moisture absorption, solubility in water as well as swelling ratio increased. The highest values of mechanical parameters (tensile strength and Young’s modulus) were determined for the starch/CMS film containing the lowest CMS amount, i.e. 10 wt.% (1.1 MPa, 15 MPa, respectively). For the same system the lowest moisture absorption, solubility in water as well as swelling ratio were reported. Thus, it could be concluded that for this system the highest crosslinking density has been achieved, what was confirmed by DMTA results. Such a film could potentially find application in food or agricultural industry.

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“…4, donde se muestra dos picos de cristalización, un primer pico a 64.49°C y un segundo pico a 299.60°C. La investigación de Rungsiri Suriyatem reporto la cristalización del almidón entre 60°C y 160°C [17]. Posteriormente se muestra una intensa transición exotérmica que podemos llamarlos picos de fusión, el primer pico de fusión se presenta a 361.2°C y el segundo a 499.4°C.…”

Section: A Caracterización Del Almidón Y Quitosanounclassified

“…Este mismo comportamiento también ha sido reportado en otras investigaciones, donde se registró un rango de degradación en tres etapas, 25-160°C (evaporación del agua libre), 160-500°C (evaporación de agua) y 500-600°C (descomposición del almidón de maíz). Rungsiri Suriyatem reportó una degradación a 325°C [17], mientras Montoya R. indicó que la degradación se daba entre 292-330°C [18] y O.S. Lawal reportó la degradación entre 263°-358°C [19].…”

Section: A Caracterización Del Almidón Y Quitosanounclassified

“…Este espectrograma es similar a muchas investigaciones, teniendo una banda ancha a 3303.46 cm -1 referente a los grupos OH. Los picos a 2933.2cm -1 se atribuyen a la vibración de estiramiento de C-H, también una banda a 1650.77 cm-1 se asignó al OH de agua reportado por Rungsiri Suriyatem [17], como también grupos OH en la región de 3000 cm -1 ; así mismo, la banda de las vibraciones C-H a 2914 cm -1 reportado por Alarcón Cavero [20] En la Fig. 9 se observa el espectrograma de infrarrojo del quitosano, donde se observan las bandas de los grupos funcionales característicos de la molécula de quitosano, se hace evidente la aparición de la banda del grupo amino a 1555 cm -1 y se observa una mejor definición en las bandas de los grupos OH a 3338 cm -1 y N-H a 2873 cm -1 .…”

Section: A Caracterización Del Almidón Y Quitosanounclassified

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Obtención de películas biodegradables mediante la Gestión de Residuos Orgánicos que contienen Almidón y Quitosano

Baca¹,

Chavez²,

Roudet³

2020

Proceedings of the 18th LACCEI International Multi-Conference for Engineering, Education, and Technology: Engineering, Integrat

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In this research work a biodegradable polymer is obtained from the mixture of potato starch with chitosan, obtained from the squid pen. The proportion of chitosan and starch was investigated by mixing different weight percentages of starch and chitosan, to determine the mechanical characteristics, such as the tensile and biodegradability test. Starch films and chitosan films were prepared to evaluate their mechanical properties separately from which a maximum result of 10.17 MPa for starch films and 46.766 MPa for chitosan films was obtained. While the starchchitosan compound had a maximum resistance of 24.59 MPa. With these results we can indicate that starch improves the properties of chitosan films. The mechanical properties of the starch-chitosan compound is superior to that of some conventional plastics, such as in comparison to low density polyethylene having a resistance of 17.3 MPa.

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Improvement of mechanical properties and thermal stability of biodegradable rice starch–based films blended with carboxymethyl chitosan

Cited by 100 publications

References 38 publications

Fabrication and properties of thermoplastic starch/montmorillonite composite using dialdehyde starch as a crosslinker

Fabrication and properties of thermoplastic starch/montmorillonite composite using dialdehyde starch as a crosslinker

Hydrophilic films based on starch and carboxymethyl starch

Obtención de películas biodegradables mediante la Gestión de Residuos Orgánicos que contienen Almidón y Quitosano

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