Omer Khalid

Mr. Omer Khalid

University of Engineering & Technology, Lahore
+5
orcid

Research Focus & Metrics

Academic Career Length

6Years (2021-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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18 January 2022 in Coatings
Verified
Journal Article
Open access
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Victor Gomes Lauriano SouzaVictor Gomes Lauriano Souza
Victor Gomes Lauriano Souza
IMIgor Penido de Mello
Igor Penido de Mello
OKOmer Khalid
Omer Khalid
JPJoão Pires
João Pires
CRCarolina Rodrigues
Carolina Rodrigues
Isabel CoelhosoIsabel Coelhoso
Isabel Coelhoso
Traditional food packaging systems help reduce food wastage, but they also produce environmental impacts when not properly disposed of. Bio-based polymers are a promising solution to overcome these impacts, but they have poor barrier and mechanical properties. This work evaluates two strategies to improve these properties in pectin films: the incorporation of cellulose nanocrystals (CNC) or sodium montmorillonite (MMT) nanoparticles, and an additional layer of chitosan (i.e., a bilayer film). The bionanocomposites and bilayer films were characterized in terms of optical, morphological, hygroscopic, mechanical and barrier properties. The inclusion of the nanofillers in the polymer reduced the water vapor permeability and the hydrophilicity of the films without compromising their visual properties (i.e., their transparency). However, the nanoparticles did not substantially improve the mechanical properties of the bionanocomposites. Regarding the bilayer films, FTIR and contact angle studies revealed no surface and/or chemical modifications, confirming only physical coating/lamination between the two polymers. These bilayer films exhibited a dense homogenous structure, with intermediate optical and hygroscopic properties. An additional layer of chitosan did not improve the mechanical, water vapor and oxygen barrier properties of the pectin films. However, this additional layer made the material more hydrophobic, which may play an important role in the application of pectin as a food packaging material.

1 January 2021 in Journal of Energy Storage
Verified
Journal Article
Closed access
AJAtif Javaid
Atif Javaid
OKOmer Khalid
Omer Khalid
ASAhmed Shakeel
Ahmed Shakeel
SNSehrish Noreen
Sehrish Noreen