Polyvinyl alcohol films with different degrees of hydrolysis and polymerization
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...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Universidade Estadual de Londrina
2019-12-01
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| Series: | Semina: Ciências Exatas e Tecnológicas |
| Subjects: | |
| Online Access: | http://www.uel.br/revistas/uel/index.php/semexatas/article/view/37674 |
| _version_ | 1819009331868205056 |
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| author | Suzana Mali Fabíola Azanha Carvalho Ana Paula Bilck Fabio Yamashita |
| author_facet | Suzana Mali Fabíola Azanha Carvalho Ana Paula Bilck Fabio Yamashita |
| author_sort | Suzana Mali |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-21T00:54:41Z |
| format | Article |
| id | doaj.art-5c17f7ef6e3e4215911dac5e583e4f28 |
| institution | Directory Open Access Journal |
| issn | 1676-5451 1679-0375 |
| language | English |
| last_indexed | 2024-12-21T00:54:41Z |
| publishDate | 2019-12-01 |
| publisher | Universidade Estadual de Londrina |
| record_format | Article |
| series | Semina: Ciências Exatas e Tecnológicas |
| spelling | doaj.art-5c17f7ef6e3e4215911dac5e583e4f282022-12-21T19:21:20ZengUniversidade Estadual de LondrinaSemina: Ciências Exatas e Tecnológicas1676-54511679-03752019-12-0140216917810.5433/1679-0375.2019v40n2p16919469Polyvinyl alcohol films with different degrees of hydrolysis and polymerizationSuzana Mali0Fabíola Azanha Carvalho1Ana Paula Bilck2Fabio Yamashita3Universidade Estadual de LondrinaUniversidade Estadual de Londrina.Universidade Estadual de LondrinaUniversidade Estadual de LondrinaThe 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.http://www.uel.br/revistas/uel/index.php/semexatas/article/view/37674biodegradable polymerdegree of hydrolysisdegree of polymerization. |
| spellingShingle | Suzana Mali Fabíola Azanha Carvalho Ana Paula Bilck Fabio Yamashita Polyvinyl alcohol films with different degrees of hydrolysis and polymerization Semina: Ciências Exatas e Tecnológicas biodegradable polymer degree of hydrolysis degree of polymerization. |
| title | Polyvinyl alcohol films with different degrees of hydrolysis and polymerization |
| title_full | Polyvinyl alcohol films with different degrees of hydrolysis and polymerization |
| title_fullStr | Polyvinyl alcohol films with different degrees of hydrolysis and polymerization |
| title_full_unstemmed | Polyvinyl alcohol films with different degrees of hydrolysis and polymerization |
| title_short | Polyvinyl alcohol films with different degrees of hydrolysis and polymerization |
| title_sort | polyvinyl alcohol films with different degrees of hydrolysis and polymerization |
| topic | biodegradable polymer degree of hydrolysis degree of polymerization. |
| url | http://www.uel.br/revistas/uel/index.php/semexatas/article/view/37674 |
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