Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Types of Step-Growth Polymers: Polyesters01:20

Types of Step-Growth Polymers: Polyesters

2.2K
The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
2.2K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Ligand-mediated formation of amphiphilic silver nanoclusters: synthesis, redox properties, and activity against clinically relevant bacteria.

Journal of materials chemistry. B·2026
Same author

Benchmarking machine learning approaches for polarization mapping in ferroelectrics using 4D-STEM.

Scientific reports·2026
Same author

Skin Regeneration in Diabetic Rats Using Gold Nanoparticles-Bioactive Glass Oil-in-Water Cream.

Materials (Basel, Switzerland)·2026
Same author

FTIR Spectroscopy Coupled with Principal Component Analysis for Rapid Screening of Melamine Adulteration in Brown Rice Flour.

Molecules (Basel, Switzerland)·2026
Same author

Highly Flexible and Conformable ZnO/FeGa Magnetoelectric Heterostructures for Skin wound Healing.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Synthesis and microstructural properties of Pt-decorated α-Fe<sub>2</sub>O<sub>3</sub> nanotubes for hydrogen gas sensing applications.

RSC advances·2026

Related Experiment Video

Updated: May 8, 2025

Film Extrusion of Crambe abyssinica/Wheat Gluten Blends
06:51

Film Extrusion of Crambe abyssinica/Wheat Gluten Blends

Published on: January 17, 2017

9.9K

Beeswax-poly(vinyl alcohol) composite films for bread packaging.

Anca Peter1, Lucica Pop1, Leonard Mihaly Cozmuta1

  • 1Technical University of Cluj Napoca, Faculty of Sciences, Victoriei 76, 430072 Baia Mare, Romania.

Food Chemistry: X
|December 24, 2024
PubMed
Summary
This summary is machine-generated.

Polyvinyl alcohol (PVA) films enhanced with beeswax show improved barrier properties for bread packaging. These modified films offer better thermal stability and reduced water vapor permeability compared to pure PVA.

Keywords:
BeeswaxBiodegradabilityCharacterizationFood packagingPVAThermal treatment

More Related Videos

Inkjet-printed Polyvinyl Alcohol Multilayers
05:11

Inkjet-printed Polyvinyl Alcohol Multilayers

Published on: May 11, 2017

12.5K
Thin Film Composite Silicon Elastomers for Cell Culture and Skin Applications: Manufacturing and Characterization
08:02

Thin Film Composite Silicon Elastomers for Cell Culture and Skin Applications: Manufacturing and Characterization

Published on: July 3, 2018

10.6K

Related Experiment Videos

Last Updated: May 8, 2025

Film Extrusion of Crambe abyssinica/Wheat Gluten Blends
06:51

Film Extrusion of Crambe abyssinica/Wheat Gluten Blends

Published on: January 17, 2017

9.9K
Inkjet-printed Polyvinyl Alcohol Multilayers
05:11

Inkjet-printed Polyvinyl Alcohol Multilayers

Published on: May 11, 2017

12.5K
Thin Film Composite Silicon Elastomers for Cell Culture and Skin Applications: Manufacturing and Characterization
08:02

Thin Film Composite Silicon Elastomers for Cell Culture and Skin Applications: Manufacturing and Characterization

Published on: July 3, 2018

10.6K

Area of Science:

  • Materials Science
  • Polymer Science
  • Food Packaging Technology

Background:

  • Polyvinyl alcohol (PVA) is a versatile polymer with potential for food packaging.
  • Improving the barrier properties of PVA films is crucial for applications like bread packaging.
  • Conventional packaging materials like polyethylene (PE) have limitations in terms of biodegradability.

Purpose of the Study:

  • To enhance the barrier characteristics of polyvinyl alcohol (PVA) films.
  • To evaluate the suitability of modified PVA films for bread packaging.
  • To investigate the effects of beeswax (BW) and glycerin on PVA film properties.

Main Methods:

  • Composite film preparation using PVA, beeswax, and glycerin.
  • Heat treatment of the composite films.
  • Characterization using X-ray Diffraction (XRD), Fourier-Transform Infrared Spectroscopy (FTIR), X-ray Photoelectron Spectroscopy (XPS), and Thermogravimetric Analysis (TGA-DTA).
  • Evaluation of water vapor permeability (WVP), solubility, swelling capacity, and biodegradability.
  • Statistical modeling including Multiple Linear Regression (MLR), Stepwise Regression (SR), and Principal Component Analysis (PCA).

Main Results:

  • New cross-links formed between PVA and beeswax, confirming a composite structure.
  • Glycerin reduced dehydration, while beeswax enhanced thermal stability.
  • The optimal PVA-beeswax film exhibited a WVP 7.5 times higher than PE, significantly lower than pure PVA (29 times higher).
  • Direct correlations were found between WVP, solubility, swelling, and biodegradability.
  • PCA indicated distinct film behaviors, with PVA containing 2g beeswax and no glycerin being most similar to PE.

Conclusions:

  • Beeswax and glycerin effectively improve the barrier and thermal properties of PVA films.
  • The optimized PVA-beeswax film demonstrates significant potential as a sustainable bread packaging material.
  • The modified PVA films offer a promising alternative to conventional plastic packaging with improved performance and biodegradability.