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High-performance carboxymethyl cellulose-based composite film tailored by versatile zeolitic imidazolate framework
Jiaji Yue1, Siying Zhou1, Xingxiang Ji2
1Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.
This study developed a carboxymethyl cellulose (CMC) composite film with zeolitic imidazolate framework (ZIF) for enhanced packaging. The new material offers improved barrier properties, strength, and UV protection, showing promise for transparent packaging applications.
Area of Science:
- Materials Science
- Polymer Science
- Nanotechnology
Background:
- Biopolymer-based composite films are crucial for advanced packaging solutions.
- Carboxymethyl cellulose (CMC) is a widely used biopolymer with potential for functionalization.
- Zeolitic imidazolate frameworks (ZIFs) offer tunable properties for material enhancement.
Purpose of the Study:
- To develop a multifunctional carboxymethyl cellulose (CMC) based composite film.
- To incorporate zeolitic imidazolate framework (ZIF) materials into CMC films.
- To evaluate the enhanced properties of the CMC/ZIF composite for packaging applications.
Main Methods:
- Fabrication of carboxymethyl cellulose (CMC) composite films incorporating zeolitic imidazolate framework (ZIF) materials, specifically Zn/Co-ZIF.
- Characterization of the composite films' barrier properties (OTR, WVTR) and mechanical strength (tensile strength).
- Assessment of UV protection capability and durability, including photocatalytic degradation suppression of RhB under UV light.
Main Results:
- The CMC/Zn/Co-ZIF composite film exhibited significantly improved oxygen transmission rate (OTR), water vapor transmission rate (WVTR), and tensile strength compared to pristine CMC film.
- The composite film demonstrated robust UV protection across the entire UV spectrum with excellent durability after prolonged UV exposure.
- The Zn/Co-ZIF/CMC film effectively suppressed the photocatalytic degradation of Rhodamine B (RhB) solutions under UV light.
Conclusions:
- Zeolitic imidazolate framework (ZIF) materials can be effectively utilized as functional nanofillers in carboxymethyl cellulose (CMC) biopolymer matrices.
- The developed Zn/Co-ZIF/CMC composite films possess multifunctional properties suitable for advanced transparent packaging.
- These findings highlight the potential of ZIFs for creating high-performance biopolymer-based materials for UV protection and packaging.
