Miscibility and thermal stability of poly(vinyl alcohol)/chitosan mixtures

Lewandowska, Katarzyna

doi:10.1016/j.tca.2009.04.003

Cited by 186 publications

(102 citation statements)

References 25 publications

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“…The second step occurs between 200 and 400 C, in which the dehydration of the PVA takes place, followed by chain scission and decomposition (Frone et al, 2011;Li, Yue, & Liu, 2012). The third step occurs between 400 and 500 C and it can be attributed to the degradation of the by-products generated by PVA during the thermal process (Bonilla et al, 2014;Lewandowska, 2009). Similar three-step weight loss behaviour was observed for the S:PVA blends, except for the film with the lowest PVA ratio (S2:PVA1), where a second weight loss step was observed after the first water loss, at relatively low temperature (150e200 C).…”

Section: Thermal Behaviourmentioning

confidence: 99%

Properties and ageing behaviour of pea starch films as affected by blend with poly(vinyl alcohol)

et al. 2015

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Section: Thermal Behaviourmentioning

confidence: 99%

Properties and ageing behaviour of pea starch films as affected by blend with poly(vinyl alcohol)

et al. 2015

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“…T max of CH monolayers was 269 • C, near to that reported by other authors Lewandowska, 2009;. As seen in Table 2.1, no great effect of the EO was observed in thermodegradation pattern of CH, except the small loss (about 5 %) occurred at very high temperature (400-450 • C) and a slight increase in temperature of the maximum degradation rate (T max ).…”

Section: Iii2 Chaptersupporting

confidence: 76%

Different strategies to obtain antimicrobial biodegradable films for food applications, using starch and/or chitosan with or without essential oils

Valencia-Sullca¹,

Encarnación²

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CONSIDERAN: que la memoria titulada "DIFFERENT STRATEGIES TO OBTAIN ANTIMICROBIAL BIODEGRADABLE FILMS FOR FOOD APPLICATIONS, USING STARCH AND/OR ACKNOWLEDGEMENTSPrimero y antes que nada, dar gracias a Dios, por estar conmigo en cada paso que doy, por fortalecer mi corazón e iluminar mi mente y por haber puesto en mi camino a aquellas personas que han sido mi soporte y compañía durante todo el periodo de estudio.Agradecer hoy y siempre a mis amados padres Elena y Ubaldo porque a pesar de no estar presentes físicamente, se que procuran mi bienestar desde mi país, Perú, y esta claro que, si no fuese por el esfuerzo realizado por ellos, mis estudios realizados no hubiesen sido posible. A mis hermanos Maritza, Joaquín, Iris, Ismael, y mis sobrinos, porque a pesar de la distancia, el ánimo, cariño, apoyo y alegría que me brindan me dan la fortaleza necesaria para seguir adelante. Mi padrino Gerardo y Lucia por su cariño, consejos y hospitalidad durante mi estadia en Barcelona, los aprecio mucho.Gracias al Gobierno del Perú, especificamente al Ministerio de Educación con el programa de Becas Pronabec, por la gran oportunidad de poder realizar mis estudios de doctorado en Valencia-España.Muchas gracias de corazón Dra Amparo Chiralt, Dra. Lorena Atarés y Dra. Maria Vargas por abrirme las puertas del grupo de investigación y darme su confianza y por permitirme aprender y trabajar a su lado. La experiencia y conocimiento de cada una de ustedes ha sido muy enriquecedor para mi formación academica. Les estare por siempre agradecida.Gracias al "Laboratoire d'Ingénierie et des Biomolécules" y en especial al Dr. Laura Sanchez Gonzalez y la Dra. Elmira Arab Tehrany de la Université de Lorraine.Ha sido una experiencia inolvidable haber podido compartir mi estancia con ustedes. Merci beaucoup!!!!!!!! Gracias Cristhian Rodriguez por tu apoyo, aliento y cariño incodicional durante estos años, siempre te estare agradecida y a toda tu linda familia en especial a tus padres Berta y Gilberto. Gracias por su cariño, animos y amistad, los llevo en mi corazón y en mis oraciones.A todos mis amigos muy cercanos que he sentido su compañía durante estos años. Gracias: Gina, Rosario, Jonathan, Nohemi, Cesár, Willy, Luz, Carmen, Paul, Sandrita, Danitza, Fernando, Jesus, Rosmery, Ronny, Mauricio, Nestor, Ines, etc, asimismo, algunos becarios de pronabec que ha sido un gusto conocerlos y compartir experiencias y conocimientos con ustedes, gracias por su amistad:Mirian, Estefany, Daysi, Galo, Elio, Edwin, Eva, Oscar..etc.Gracias Robert Valverde por tu apoyo, cariño y animos, asimismo, gracias a tu linda familia, ha sido una bendición conocerlos, mi estancia en Nancy-Francia ha sido y será la mejor experiencia que he tenido, nunca lo olvidare los llevo en mi corazón. Gracias totales. Asimismo, gracias Silvia, Madeleine, Vilma, Juanca, Nahuel, Viviana..ha sido un gusto conocerlos y compartir momentos lindos, gracias por su amistad y cariño..y al grupo latino de los miercolitos gracias por su linda amistad y momentos compartidos en Nancy, gracias: Mag...

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“…The hydrolysis reaction is not complete that result in polymerization with a certain degree of hydrolysis [10]. Its properties mainly depend on the degree of hydrolysis [6]. Its non-toxicity, water-solubility, biocompatibility and biodegradability make it widely applicable in biomedical field [11][12][13][14][15].…”

Section: Fabrication and Characterization Of Biodegradable Poly(vinylmentioning

confidence: 99%

“…Chitosan may potentially be miscible with poly(vinyl alcohol) due to the formation of hydrogen bonds [8,16,17]. Lewandowska [6] has reported the results of thermal and rheological properties and has shown that chitosan with poly(vinyl alcohol) are poorly miscible [6,18,19]. Jia et al [11] explored the electrospun nanofibers of poly(vinyl alcohol)/chitosan (PVA/CS) blends and FTIR, DSC, XRD results proved that there were strong intermolecular hydrogen bonds between poly(vinyl alcohol) and chitosan [1].…”

Section: Fabrication and Characterization Of Biodegradable Poly(vinylmentioning

confidence: 99%

“…Chitosan (CS) is an amino polysaccharide which consists of 2-amino-2-deoxy-β-D-glucopyranose and 2-acetamido-2-deoxy-β-D-glucopyranose [6,7]. Its unique properties such as nontoxicity, biocompatibility biodegradability and bioactivity have attracted interest for its investigation and biomedical applications, including wound healing, homeostatic, immunity…”

Section: Introductionmentioning

confidence: 99%

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Fabrication and Characterization of Biodegradable Poly(vinyl alcohol)/Chitosan Blends

Pokhrel¹,

Adhikari²,

Yadav³

2017

Asian J. Chem.

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Poly(vinyl alcohol)/chitosan (PVA/CS) blends were prepared by solution casting method using glutaraldehyde as a cross linking agent. Fourier transform infrared spectroscopy (FTIR) and microhardness technique were employed to study the intermolecular interactions between constituents of polymer blends and mechanical properties respectively. The degradation properties of PVA/CS films were studied by composting method. FTIR spectra of poly(vinyl alcohol) and PVA/CS blends showed some variations in the absorption bands which reflected interactions between the components of blends. The mechanical stiffness of PVA/CS blends was enhanced by chitosan upto 40 % loading and it was found optimum composition for the maximum enhancement of mechanical properties of the blend. The degradation rate of blends was found increased with the increase in chitosan content.

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Miscibility and thermal stability of poly(vinyl alcohol)/chitosan mixtures

Cited by 186 publications

References 25 publications

Properties and ageing behaviour of pea starch films as affected by blend with poly(vinyl alcohol)

Properties and ageing behaviour of pea starch films as affected by blend with poly(vinyl alcohol)

Different strategies to obtain antimicrobial biodegradable films for food applications, using starch and/or chitosan with or without essential oils

Fabrication and Characterization of Biodegradable Poly(vinyl alcohol)/Chitosan Blends

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