Green fabrication of thermally-stable oxidized cellulose nanocrystals by evolved Fenton reaction and in-situ nanoreinforced thermoplastic starch
نویسندگان
چکیده
High performance fibers and improved interfacial interaction can enhance the properties of polymer composites. Herein, microcrystalline cellulose (MCC) was oxidized by H2O2/CuSO4, a new Fenton process, to achieve MCC (OCNCs) with 16 ± 1% carboxyl content. Noteworthy, thermal stability OCNCs superior CNCs prepared acid hydrolysis. Interestingly, primary alcohol groups were selectively achieved 11.0 nm, 231.6 nm 72% average diameter, length degree crystallinity, respectively. Then glycerol, starch reactive extruded fabricate TPS/OCNC bionanocomposites their structure evaluated systematically. Strikingly, significant improvement in glass transition temperature (from 63.1 94.5 °C) notch impact strength 1.3 3.9 kJ/m2) noted for amorphous TPS/OCNCs 1 wt % OCNCs, its tensile 20.5 MPa, simultaneously. The ascribed situ formation “carboxyl-hydroxyl” hydrogen bonds that acted as cross-links compatibility. We showcase reaction extrusion facile strategy prepare sustainable biodegradable more suitable everyday applications replace petroleum-based plastic eliminate pollution “microplastics”.
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ژورنال
عنوان ژورنال: Cellulose
سال: 2021
ISSN: ['1572-882X', '0969-0239']
DOI: https://doi.org/10.1007/s10570-021-04039-7