Biodegradable and non-retrogradable eco-films based on starch-glycerol with citric acid as crosslinking agent

dc.creatorGonzález Seligra, Paula Fabiana
dc.creatorMedina Jaramillo, Carolina
dc.creatorFama, Lucia Mercedes
dc.creatorGoyanes, Silvia Nair
dc.date.accessioned2018-03-15T17:48:54Z
dc.date.accessioned2022-10-15T13:32:22Z
dc.date.available2018-03-15T17:48:54Z
dc.date.available2022-10-15T13:32:22Z
dc.date.created2018-03-15T17:48:54Z
dc.date.issued2016-03
dc.identifierGonzález Seligra, Paula Fabiana; Medina Jaramillo, Carolina; Fama, Lucia Mercedes; Goyanes, Silvia Nair; Biodegradable and non-retrogradable eco-films based on starch-glycerol with citric acid as crosslinking agent; Elsevier; Carbohydrate Polymers; 138; 3-2016; 66-74
dc.identifier0144-8617
dc.identifierhttp://hdl.handle.net/11336/38937
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/4391693
dc.description.abstractBiodegradable and non-retrogradable starch-glycerol based films were obtained using citric acid (CA) as crosslinking agent at 75 °C. This material allowed decreasing water vapor permeability (WVP) more than 35%, remained amorphous for at least 45 days as a result of the network formed by the CA that avoided starch retrogradation and maintained the degradability in compost, occurring only six days after the films without citric acid. A simulation of the gelatinization process of starch-glycerol with and without CA, using a differential thermal analysis device, showed that the system with CA completed the gelatinization 5 °C before than the other and, CA first reacted with glycerol and then starch-glycerol-CA reaction occurred. The temperature at which the gelatinization process was carried out was critical to obtain the best results. An increase of gelatinization process temperature at 85 °C in system with CA, led to a worsening on WVP and its integrity after a swelling process with dimethylsulphoxide (DMSO), compared to the films processed at 75 °C.
dc.languageeng
dc.publisherElsevier
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.carbpol.2015.11.041
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0144861715011315
dc.rightshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectBIODEGRADABILITY
dc.subjectBIODEGRADABLE EDIBLE FILMS
dc.subjectCITRIC ACID
dc.subjectCROSSLINKING
dc.subjectSTARCH
dc.titleBiodegradable and non-retrogradable eco-films based on starch-glycerol with citric acid as crosslinking agent
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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