Polyvinyl alcohol films with different degrees of hydrolysis and polymerization
DOI:
https://doi.org/10.5433/1679-0375.2019v40n2p169Keywords:
Biodegradable polymer, Degree of hydrolysis, Degree of polymerization.Abstract
The objective of this work was to manufacture biodegradable films based on polyvinyl alcohol (PVA) and also to evaluate the effect of the different degrees of hydrolysis (DH) and degrees of polymerization (DP) of PVA on the properties of these films. Four different types of PVA with DH ranging from 88.0 to 98.4% and DP ranging from 150 to 2000 were used to produce the films by casting, and glycerol was used as plasticizer. Films based on PVA with lower DH (SelvolTM 540 and 203) showed higher solubility, water vapor permeability and water sorption capacity, and also were less rigid, and had lower glass transition and melting temperatures when compared to films obtained from higher DH PVA (SelvolTM 325 and 107). The DP affected the solubility of the films, the film produced with the higher DP (SelvolTM 325 - DP = 1000????1500) showed lower solubility value. Films based on PVA with higher DP (SelvolTM 540 and 325) showed higher elongation values. Both DH and DP affected PVA films properties, resulting in materials with different possibilities of applications, however, it was observed that however the effect of DH was most important for PVA films properties than DP effect.Downloads
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References
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TABOADA, O. M.; SOBRAL, P. J.; CARVALHO, R. A.; HABITANTE, A. M. M. Q. Thermomechanical properties of biodegradable films based on blends of gelatin and poly (vinyl alcohol). Food Hydrocolloids, Oxford, v. 22, p. 1485–1492, 2008.
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VERCELHEZE, A. E. S.; MARIM, B. M.; OLIVEIRA, A. L. M.; MALI, S. Development of biodegradable coatings for maize seeds and their application for Azospirillum brasilense immobilization. Applied Microbiology and Biotechnology, Berlin, v. 103, p. 2193-2203, 2019.
ASTM - AMERICAN SOCIETY FOR TESTING AND MATERIALS. Standard test methods for tensile properties of thin plastic sheeting – D882-02. Philadelphia: ASTM, 2002. Annual Book of ASTM Standards.
BIZOT, H. Using the GAB model to construct sorption isotherms. In: JOWITT, R.; ESCHER, F.; HALLISTROM, B.; MEFFERT, H.F.T.; SPIESS, W.E.L.; VOS, G. (ed.). Physical properties of foods. London: Applied Science Publishers, 1984. p. 27-41.
DEBIAGI, F.; KOBAYASHI, R. K. T.; NAKAZATO, G.; PANAGIO, L. A.; MALI, S. Biodegradable active packaging based on cassava bagasse, polyvinyl alcohol and essential oils. Industrial Crops and Products, Amsterdã, v. 52, p. 664 – 670, 2014.
FARIA, F. O.; VERCELHEZE, A. E. S.; MALI, S. Propriedades físicas de filmes biodegradáveis à base de amido de mandioca, álcool polivinílico e montmorilonita. Química Nova, São Paulo, v. 35, p. 487-492, 2012.
GALDEANO, M. C.; WILHELM, A. E.; MALI, S.; GROSSMANN, M. V. E. Influence of thickness on properties of plasticized oat starch films. Brazilian Archives of Biology and Technology, Curitiba, v. 56, p. 637 - 644, 2013.
GÓMEZ-ALDAPA, C. A.; VELAZQUEZ, G.; GUTIERREZ, M. C.; RANGEL-VARGAS, E.; CASTRO-ROSAS, J.; AGUIRRE-LOREDO, R. Y. Effect of polyvinyl alcohol on the physicochemical properties of biodegradable starch films. Materials Chemistry and Physics, Lausanne, v. 239,p. 122027, 2020.
GONTARD, N.; GUILBERT, S.; CUQ, J. L. Edible wheat gluten films: influence of the main process variables on film properties using response surface methodology. Journal of Food Science, Champaign, v. 57, p. 190-195, 1992.
JANG, J.; LEE, D. K. Plasticizer effect on the melting and crystallization behavior of polyvinyl alcohol. Polymer, Amsterdã, v. 44, p. 8139 8146, 2003.
MALI, S.; GROSSMANN, M. V. E.; YAMASHITA, F. Starch films: production, properties and potential of utilization. Semina: Ciências Agrárias, Londrina, v. 31, p. 137-156, 2010.
MALI, S.; SAKANAKA, L. S.; YAMASHITA, F.; GROSSMANN, M. V. E. Water sorption and mechanical properties of cassava starch films and their relation to plasticizing effect. Carbohydrate Polymers, Barking, v. 60, p. 283-289, 2005.
MARIA, T. M. C.; CARVALHO, R. A.; SOBRAL, P. J. A.; HABITANTE, A. M. B. Q.; SOLORZA-FERIA, J. The effect of the degree of hydrolysis of the PVA and the plasticizer concentration on the color, opacity, and thermal and mechanical properties of films based on PVA and gelatin blends. Journal of Food Engineering, Essex, v. 87, p. 191–199, 2008.
MELLO, L. R. P. F.; MALI, S. Use of malt bagasse to produce biodegradable baked foams made from cassava starch. Industrial Crops and Products, Amsterdã, v. 55, 187 - 193, 2014.
MERCI, A.; MALI, S.; CARVALHO, G. M. Waxy maize, corn and cassava starch: thermal degradation kinetics. Semina: Ciências Exatas e Tecnológicas, Londrina, v. 40, p. 13-22, 2019.
MORAES, I. C.; SILVA, G. G. D.; CARVALHO, R. A.; HABITANTE, A. M. Q. B.; BERGO, P. V. A.; SOBRAL, P. J. A. Influência do grau de hidrólise do poli(vinil álcool) nas propriedades físicas de filmes à base de blendas de gelatina e poli(vinil álcool) plastificados com glicerol. Ciência e Tecnolologia de Alimentos, Campinas, v. 28, p. 738-745, 2008.
OLIVATO, J. B.; GROSSMANN, M. V. E.; BILCK, A. P.; YAMASHITA, F.; OLIVEIRA, L. M. Starch/polyester films: simultaneous optimisation of the properties for the production of biodegradable plastic bags. Polímeros, Rio de Janeiro, v. 23, p. 32-36, 2013.
SANTOS, R. A. L.; MÜLLER; C. M. O., GROSSMANN, M. V. E.; MALI, S.; YAMASHITA, F. Starch/poly (butylene adipate-co-terephthalate)/montmorillonite films produced by blow extrusion. Química Nova, São Paulo, v. 37, p. 937 - 942, 2014.
SHIRAI, M. A.; GROSSMANN, M. V. E.; MALI, S., YAMASHITA, F.; GARCIA, P. S.; MÜLLER, C. M. O. Development of biodegradable flexible films of starch and poly(lactic acid) plasticized with adipate or citrate esters. Carbohydrate Polymers, Barking, v. 92, p. 19 – 22, 2013.
SILVA, G. G. D.; SOBRAL, P. J. A.; CARVALHO, R. A.; BERGO, P. V. A.; MENDIETA-TABOADA, O.; HABITANTE, A.M Q.B. Biodegradable films based on blends of gelatin and poly (vinyl alcohol): effect of PVA type or concentration on some physical properties of films. Journal of Polymers and the Environment, Alemanha, v. 16, p. 276-285, 2008.
SOBRAL, P. J. A.; MENEGALLI, F. C.; HUBINGER, M. D.; ROQUES, M. A. Mechanical water vapor barrier and thermal properties of gelatin based edible films. Food Hydrocolloids, Oxford, v. 15, p. 423-432, 2001.
SUDHAMANI, S. R.; PRASAD, M. S.; SANKAR, K.U. DSC and FTIR studies on gellan and polyvinyl alcohol (PVA) blend films. Food Hydrocolloids, Oxford, v.17, p. 245-250, 2003.
TABOADA, O. M.; SOBRAL, P. J.; CARVALHO, R. A.; HABITANTE, A. M. M. Q. Thermomechanical properties of biodegradable films based on blends of gelatin and poly (vinyl alcohol). Food Hydrocolloids, Oxford, v. 22, p. 1485–1492, 2008.
TANG, X.; ALAVI, S. Recent advances in starch, polyvinyl alcohol based polymer blends, nanocomposites and their biodegradability. Carbohydrate Polymers, Barking, v. 85, p. 7 - 16, 2011.
VERCELHEZE, A. E. S.; MARIM, B. M.; OLIVEIRA, A. L. M.; MALI, S. Development of biodegradable coatings for maize seeds and their application for Azospirillum brasilense immobilization. Applied Microbiology and Biotechnology, Berlin, v. 103, p. 2193-2203, 2019.
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Published
2019-12-18
How to Cite
Mali, S., Carvalho, F. A., Bilck, A. P., & Yamashita, F. (2019). Polyvinyl alcohol films with different degrees of hydrolysis and polymerization. Semina: Ciências Exatas E Tecnológicas, 40(2), 169–178. https://doi.org/10.5433/1679-0375.2019v40n2p169
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