Blue emissive PVA blended cellulose nanocrystals/carbon dots film for UV shielding applications

The current state of ozone layer depletion caused by ultraviolet (UV) radiation and its impacts on human health and the environment make eco-friendly UV-blocking materials highly important. The present study reports an efficient, biodegradable film using polyvinyl alcohol (PVA) functionalized with c...

Full description

Saved in:
Bibliographic Details
Published in:Cellulose (London) 2023-06, Vol.30 (9), p.5623-5639
Main Authors: Jose, Jasmine, Mathew, Raji Mary, Zachariah, Elsa Susan, Thomas, Vinoy
Format: Article
Language:English
Subjects:
Bioorganic Chemistry
Carbon dots
Cellulose
Ceramics
Chemistry
Chemistry and Materials Science
Composites
Conversion
Glass
Light transmission
Nanocrystals
Natural Materials
Organic Chemistry
Original Research
Ozone
Ozone depletion
Ozonosphere
Physical Chemistry
Polymer Sciences
Polyvinyl alcohol
Radiation shielding
Sunlight
Sustainable Development
Ultraviolet radiation
Waste utilization
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The current state of ozone layer depletion caused by ultraviolet (UV) radiation and its impacts on human health and the environment make eco-friendly UV-blocking materials highly important. The present study reports an efficient, biodegradable film using polyvinyl alcohol (PVA) functionalized with cellulose nanocrystals (CNCs) and carbon dots (CDs) that exhibits outstanding UV-blocking capabilities through blue light conversion. This study demonstrated an effective way for the clean and improved utilisation of waste paper by extracting CNCs from it and a green hydrothermal method employed for synthesising CDs from CNCs. The film composed of PVA blended with CNCs and CDs used in this work successfully blocked 99.7 UV-C, 98.5 UV-B, and 92.1% UV-A while transmitting 80.1% visible light. Furthermore, this film converted UV rays into blue light, indicating its sunlight conversion properties. High UV resistance, UV-to-blue light conversion capabilities, and excellent visible light transmission of these films make them a new contender among PVA-based UV-shielding and sunlight conversion materials.
ISSN:0969-0239
1572-882X
DOI:10.1007/s10570-023-05232-6