Journal
POLYMERS
Volume 14, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/polym14050946
Keywords
TOCN; SI ATRP; optically transparent paper film; polystyrene
Categories
Funding
- Ministry of Science and Technology [MOST109-2221-E-005-071, MOST110-2221-E-005-001-MY3]
- Energy Bureau of the Ministry of Economic Affairs - Kasetsart University
- 2-institution Co-Research Scholarship by Kasetsart University
- National Chung Hsing University
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Applications of cellulose nanofibers can meet the needs of biocomposites. In this study, TEMPO-oxidized cellulose nanofibers were used to fabricate transparent paper films, which were then modified through polymerization reactions. Characterization techniques were used to analyze the samples.
Applications of cellulose nanofibers currently match the demands of biodegradable and renewable constituent biocomposites. In this study, we studied the process of preparing TEMPO-oxidized cellulose nanofibers (TOCNs). These nano-sized cellulose fibers (ca. 11 nm) can be fabricated to high transmittance and optically transparent paper (OP) films. Then the OP films can be facilely immobilized initiating sites for the subsequent surface-initiated atom transfer radical polymerization (SI ATRP). We investigated SI ATRP with styrene (St) kinetics and monitored chemical structure changes of the OP surfaces. The obtained OP-g-PSt significantly led to enhance thermal stability and alter the OP surface with hydrophobic compared to that of pristine OP film. Characterization was studied by Fourier transform infrared spectroscopy (FT-IR), powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), UV-Vis spectroscopy, thermogravimetric analyzer (TGA), and water contact angle (WCA) measurements.
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