Mechanical, optical and antioxidant properties of 7-Hydroxy-4-methyl coumarin doped polyvinyl alcohol/oxidized maize starch blend films

Abstract This study explains the development of eco-friendly polyvinyl alcohol (PVA)/oxidized maize starch (OMS)/Betel leaves extract (BLE) blend films by employing a cost effective technique. The influence of BLE on structural, Thermal, Mechanical, Morphological, Optical, Antibacterial, and Antioxidant properties of PVA/OMS blend were investigated successfully by applying FTIR, TGA, DSC, UTM, SEM, UV spectroscopy, In vitro antibacterial and DPPH scavenging activity. The hydrogen bonding interaction among the components of the blend films led to enhance thermal stability, miscibility, mechanical properties, smooth surface morphology and UV blocking properties of the blend films. The addition of BLE enormously improved the antibacterial and antioxidant properties of PVA/OMS blend films. Moreover, the water contact angle, solubility, biodegradability, Water vapour transmission rate, oxygen permeability properties of blend films were analyzed, which illustrates that the obtained films were hydrophilic, water soluble and biodegradable in nature. With regard to barrier properties the WVTR and oxygen permeability of the blend films were enhanced after doping of BLE. These experimental outcomes suggest that the BLE containing PVA/OMS films can be used for the expansion of active packaging material.

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Exploration of Multifunctional Properties of Piper betel Leaves Extract Incorporated Polyvinyl Alcohol-Oxidized Maize Starch Blend Films for Active Packaging Applications

Journal of Polymers and the Environment ◽

10.1007/s10924-021-02277-1 ◽

2021 ◽

Author(s):

Vishram D. Hiremani ◽

Naganagouda Goudar ◽

Tilak Gasti ◽

Sheela Khanapure ◽

Vinayak N. Vanjeri ◽

...

Keyword(s):

Polyvinyl Alcohol ◽

Active Packaging ◽

Maize Starch ◽

Blend Films ◽

Multifunctional Properties

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Characterization of Mechanical and Thermal Properties of Glycerol Mixed Oxidized Maize Starch/Polyvinyl alcohol Blend Films.

Chemical Data Collections ◽

10.1016/j.cdc.2020.100416 ◽

2020 ◽

Vol 28 ◽

pp. 100416

Author(s):

Vishram D. Hiremani ◽

Tilak Gasti ◽

Sarala Sataraddi ◽

Vinayak N. Vanjeri ◽

Naganagouda Goudar ◽

...

Keyword(s):

Thermal Properties ◽

Polyvinyl Alcohol ◽

Mechanical And Thermal Properties ◽

Maize Starch ◽

Blend Films

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Ultraviolet blocking and antioxidant polyvinyl alcohol films incorporated with baicalin extraction from Scutellaria baicalensis Georgi

Journal of Polymer Engineering ◽

10.1515/polyeng-2020-0071 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Jinshu Liu ◽

Xiaoyan Ma ◽

Wenzhao Shi ◽

Jianwei Xing ◽

Chaoqun Ma ◽

...

Keyword(s):

Water Vapor ◽

Polyvinyl Alcohol ◽

Radical Scavenging Activity ◽

Antioxidant Properties ◽

Radical Scavenging ◽

Water Vapor Permeability ◽

Scutellaria Baicalensis ◽

Vapor Permeability ◽

Protective Film ◽

Uv Blocking

Abstract Baicalin, an active flavonoid ingredient of Scutellaria baicalensis Georgi, was extracted by heat reflux extraction and showed the same significance UV absorption property with standard baicalin. Active films were prepared from polyvinyl alcohol (PVA) containing baicalin extract by casting method. The effect of baicalin extracts on the UV-blocking, optical, antioxidant property, water vapor permeability, swelling and mechanical properties of the films were studied. UV–vis transmittance spectra showed that PVA films incorporated with baicalin extract blocked ultraviolet light range from 280–400 nm even with low concentration of baicalin (0.5 wt%) and maintain the high transparency in visible spectrum. The outstanding UV-blocking properties of PVA films incorporated with baicalin extract were also confirmed by Rhodamine B degradation. Baicalin conferred antioxidant properties to PVA films as determined by DPPH radical scavenging activity. Due to the interaction between hydroxy groups of baicalin and PVA molecule, water vapor permeability, swelling and elongation at break of the films were decreased accompanied with the increasing in tensile strength and Young’s modulus. FTIR reveal that the interaction between PVA molecules was significant changed by the introduction of baicalin. These results suggest that PVA film incorporated with baicalin extract can be used for the development of functional protective film.

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Antimicrobial and antioxidant properties of polyvinyl alcohol bio composite films containing seaweed extracted cellulose nano-crystal and basil leaves extract

International Journal of Biological Macromolecules ◽

10.1016/j.ijbiomac.2017.10.057 ◽

2018 ◽

Vol 107 ◽

pp. 1879-1887 ◽

Cited By ~ 32

Author(s):

Suman Singh ◽

Kirtiraj K. Gaikwad ◽

Youn Suk Lee

Keyword(s):

Polyvinyl Alcohol ◽

Antioxidant Properties ◽

Composite Films ◽

Nano Crystal

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Dynamic and creep analysis of polyvinyl alcohol based films blended with starch and protein

Journal of Polymer Engineering ◽

10.1515/polyeng-2018-0032 ◽

2018 ◽

Vol 39 (1) ◽

pp. 35-47 ◽

Cited By ~ 6

Author(s):

Naman Jain ◽

Vinay K. Singh ◽

Sakshi Chauhan

Keyword(s):

Polyvinyl Alcohol ◽

Moisture Absorption ◽

Viscoelastic Behavior ◽

Mechanical Analysis ◽

Cross Linking ◽

Mechanical And Thermal Properties ◽

Blend Films ◽

Creep And Recovery ◽

Degradation Temperature ◽

Creep Analysis

Abstract The present study focuses on the fabrication and analyses of polyvinyl alcohol (PVA) based films blended with polymers, such as starch and protein. The aim is to improve the moisture absorption, solubility, mechanical and thermal properties of PVA by blending it with various polymers. The thermal cross-linking of the films has been studied by heating the films at 120°C for 4 h. The result shows that PVA was completely soluble in water, while post-blending solubility and moisture absorption of blended films decreased. The tensile strength of blended films was significantly higher (4%–29%) as compared to neat PVA, while thermally cross-linked films showed much higher strength (8%–174%). Blended films were characterized using Fourier transform infrared spectroscopy (FTIR) to confirm the formation of hydrogen bonds. Thermogravimetric analysis showed the increase in degradation temperature post-blending as compared to neat PVA. The viscoelastic behavior of the material as well as glass transition temperature was studied using dynamic mechanical analysis. Creep and recovery behavior were examined to study the effect of stress and temperature on creep strain. The biodegradability of the blended films was increased post-blending. This study showed that PVA based blend films can replace non-biodegradable plastics and hence are necessary for the development of environmentally friendly materials.

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Effects of Polyol-Based Plasticizer Types and Concentration on the Properties of Polyvinyl Alcohol and Casein Blend Films

Journal of Polymers and the Environment ◽

10.1007/s10924-020-01881-x ◽

2020 ◽

Author(s):

Bedriye Ucpinar Durmaz ◽

Ayse Aytac

Keyword(s):

Polyvinyl Alcohol ◽

Blend Films

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Improving the Performance of Feather Keratin/Polyvinyl Alcohol/Tris(hydroxymethyl)Aminomethane Nanocomposite Films by Incorporating Graphene Oxide or Graphene

Nanomaterials ◽

10.3390/nano10020327 ◽

2020 ◽

Vol 10 (2) ◽

pp. 327 ◽

Cited By ~ 1

Author(s):

Shufang Wu ◽

Xunjun Chen ◽

Tiehu Li ◽

Yingde Cui ◽

Minghao Yi ◽

...

Keyword(s):

Graphene Oxide ◽

Polyvinyl Alcohol ◽

Water Vapor Permeability ◽

Nanocomposite Films ◽

Light Transmittance ◽

Vapor Permeability ◽

Blend Films ◽

Feather Keratin ◽

Degradation Temperature ◽

Bionanocomposite Films

In this study, feather keratin/polyvinyl alcohol/tris(hydroxymethyl)aminomethane (FK/PVA/Tris) bionanocomposite films containing graphene oxide (GO) (0.5, 1, 2, and 3 wt%) or graphene (0.5, 1, 2, and 3 wt%) were prepared using a solvent casting method. The scanning electron microscopy results indicated that the dispersion of GO throughout the film matrix was better than that of graphene. The successful formation of new hydrogen bonds between the film matrix and GO was confirmed through the use of Fourier-transform infrared spectroscopy. The tensile strength, elastic modulus, and initial degradation temperature of the films increased, whereas the total soluble mass, water vapor permeability, oxygen permeability, and light transmittance decreased following GO or graphene incorporation. In summary, nanoblending is an effective method to promote the application of FK/PVA/Tris-based blend films in the packaging field.

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