Biodegradation behaviors of thermoplastic starch (TPS) and thermoplastic dialdehyde starch (TPDAS) under controlled composting conditions

Du, Yan-Li; Cao, Yu; Fang, Lu; Li, Fang; Cao, Yi; Wang, Xiuli; Wang, Yu‐Zhong

doi:10.1016/j.polymertesting.2008.08.002

Cited by 78 publications

(24 citation statements)

References 18 publications

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“…Chemical modification of starch can have a major impact on the biodegradation rate and final biodegradation percentage (Du et al 2008). Starch acetates are novel biodegradable polymers which undergo slower degradation and swelling than native starch.…”

Section: Starch Acetylationmentioning

confidence: 99%

“…Monitoring the sample thickness proved to be useful for the measurement of surface erosion and complementary to scanning electron microscopy (Singh et al 2003). The other possibility is that the amount of the produced carbon dioxide derived from the biodegradation of the test material can be measured, compared with the theoretical maximal amount and recorded as a biodegradation percentage (Du et al 2008).…”

Section: Biodegradability Of Plastic Materials Based On Starchmentioning

confidence: 99%

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Application of wheat B-starch in biodegradable plastic materials

Šárka¹,

Kruliš²,

Kotek³

et al. 2011

Czech J. Food Sci.

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AbstractŠárka E., Kruliš Z., Kotek J., Růžek L., Korbářová A., Bubník Z., Růžková M. (2011): Application of wheat B-starch in biodegradable plastic materials. Czech J. Food Sci., 29: 232-242.Food application of wheat B-starch comprising small starch granules as a result of lower quality is problematic. Accordingly, B-starch or acetylated starch prepared from it, with the degree of substitution (DS) of 1.5-2.3, was used in biodegradable films after blending with poly-(ε-caprolactone) (PCL). The following mechanical characteristics of the produced films were derived from the stress-strain curves: Young modulus, yield stress, stress-at-break, and strainat-break. Water absorption of PCL/starch (60/40) films was determined according to European standard ISO 62. The measured data were compared with those of commercial A-starch. The films containing native starch degraded in compost totally during 2 months. Acetylation of starch molecules in the composites reduced the degradation rate. Optical microscopy, in combination with the image analysis system NIS-Elements vs. 2.10 completed with an Extended Depth of Focus (EDF) module, was used to study the surface morphology of PCL/starch films after 20-day and 42-day compost incubation. Chemical changes in the compost used for the film exposition were measured.

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Section: Starch Acetylationmentioning

confidence: 99%

Section: Biodegradability Of Plastic Materials Based On Starchmentioning

confidence: 99%

Application of wheat B-starch in biodegradable plastic materials

Šárka¹,

Kruliš²,

Kotek³

et al. 2011

Czech J. Food Sci.

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“…Except for photo irritation [1,[6][7][8], multi-functional compounds are the common strategy in preparation of crosslinked starch. These multi-functional compounds, such as citric acid, tripolyphosphate, glutaraldehyde and adipic acid [2,[9][10][11][12], usually act as crosslinking agents. In this work, crosslinked starch was synthesized from a bifunctional compound, pyromellitic dianhydride.…”

Section: Introductionmentioning

confidence: 99%

Preparation of starch esters with crosslinking structures derived from dianhydride

Chu

Wei

Zhu

et al. 2010

Front. Chem. Sci. Eng.

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Starch is a kind of natural polymer used in many industrial fields because of its low cost, availability and biodegradation. Potato starch was modified by esterification with pyromellitic dianhydride, and the products were obtained with crosslinking structures. Orthogonal experiments showed that reactive temperature was the primary influencing factor. The product prepared at 40°C for 3 h with the mass ratio of starch and dianhydride of 16∶1 and pH value of 7.5 exhibited a degree of substitution of 11%. FTIR and UV analysis verified the formation of starch esters.

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“…Neem oil extracted from the seeds of Azadirachta indica has versatile properties, such as ovicidal, antifungal, antibacterial, immunostimulant, and acaricidal activities (Abdel-Ghaffar & SemmLer, 2007;Divakar et al, 2001;Du et al, 2008Du et al, , 2009Jahan et al, 2007;Pu et al, 2010;Xu et al, 2010). In fact, Baswa et al (2001) revealed that the neem oil exhibits bactericidal activity against 14 strains of pathogenic bacteria, such as…”

Section: Substances From Plant Extractsmentioning

confidence: 99%

“…It is likely that the different additives incorporated into the film will affect the degradation processes. In addition, although the biodegradation of both polymers has been reported by different authors (Avella et al, 2005;Du et al, 2008, Julinová et al, 2010Azahari et al, 2011;Chen et al, 1997;Jayasekara et al, 2003), scarce information has been found.…”

Section: Introductionmentioning

confidence: 97%

Different strategies to improve the functionality of biodegradable films based on starch and other polymers

Embuena¹,

Isabel²

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CONSIDERAN: que la memoria titulada "DIFFERENT STRATEGIES TO IMPROVE THE FUNCTIONALITY OF BIODEGRADABLE FILMS BASED ON STARCH ANDOTHER POLYMERS" que presenta Dª. Amalia Isabel Cano Embuena para aspirar al grado de Doctor por la Universitat Politècnica de València, reúne las condiciones adecuadas para constituir su tesis doctoral, por lo que AUTORIZAN a la interesada para su presentación. AgradecimientosA Amparo Chiralt por concederme la oportunidad de formar parte del grupo de "films". Ha sido un placer poder trabajar junto a un referente internacional en el ámbito de la investigación como tú. Gracias por tus aportes científicos y técnicos, por tu paciencia y dedicación, y por permitirme aprender y trabajar a tu lado.A Chelo González, tu apoyo durante estos cuatro años, la fuerza que me has transmitido para ir hacia delante, tus conocimientos científicos y las oportunidades que me has brindado para iniciarme en la investigación a nivel nacional e internacional son tan sólo algunas de las cosas que tengo que agradecerte. Gracias también por toda la confianza depositada en mí durante estos años y por el apoyo personal.A Maite Cháfer por haberme introducido en el área de la investigación dándome la oportunidad de conocer al grupo de "films". Tu apoyo profesional y personal y tu positividad frente a los problemas han sido de gran ayuda. A mis dos familias, sin vuestro apoyo esta Tesis no habría sido posible. En especial a Arturo, Mónica, José, Susana, Genaro, Merche y Arturo, nunca habéis puesto objeción a mis decisiones, apoyándome en todas y cada una de ellas. Gracias por la comprensión que habéis tenido conmigo cuando los nervios me han pasado alguna mala jugada.A mis pequeños, Diego, Josep, Rubén y Amalia, vuestra inocencia y alegría han sido dos cosas muy importantes para poder coger fuerzas para realizar un buen trabajo, os quiero.A mi madre, por empujarme siempre hacia los sueños, por hacerme creer que puedo y sobre todo por escucharme. Tus esfuerzos para aceptar todas las decisiones, respetar y compartir las idas y venidas que algún disgusto te han costado y acompañarme durante toda esta andadura han sido un pilar fundamental para mí.A Jorge, su confianza, su apoyo incondicional, sus ánimos, sus reflexiones y su participación activa en este gran proyecto desde que lo inicié, hoy dan su fruto. Sabes que muchas veces te he dicho que esta Tesis ha sido cosa de dos porque sin tu paciencia, sin el equilibrio y la estabilidad que me transmites y la felicidad que me aportas no hubiera llegado hasta el final. Gracias y mil gracias! AbstractIn the present Doctoral Thesis, different strategies to improve functional properties of starch films for food packaging applications were analysed: study of the effect of amylose:amylopectin ratio, blend with other polymers poly(vinyl alcohol) (PVA), and incorporation of different fillers (rice bran and cellulose nanocrystals-CNCs) and antimicrobial agents (neem oil-N, oregano essential oil-O and silver nanoparticlesAgNPs). Likewise, a biodegradation study of the films as affect...

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Biodegradation behaviors of thermoplastic starch (TPS) and thermoplastic dialdehyde starch (TPDAS) under controlled composting conditions

Cited by 78 publications

References 18 publications

Application of wheat B-starch in biodegradable plastic materials

Application of wheat B-starch in biodegradable plastic materials

Preparation of starch esters with crosslinking structures derived from dianhydride

Different strategies to improve the functionality of biodegradable films based on starch and other polymers

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