Microcrystalline cellulose: Isolation, characterization and bio ...
2016年12月1日 · Both thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) are commonly used to investigate the thermal and degradation properties of cellulose sample [94], [110]. Generally, the TGA curves of MCC show two degradation stages, which indicate the weight loss of the sample.
Isolation and characterization of highly thermal stable ...
2024年6月1日 · Furthermore, TGA indicated a substantial improvement in thermal stability, with the MCC displaying an approximately 50 % increase in thermal degradation temperature compared to the raw fiber. These combined findings demonstrate the effectiveness of the employed approach for isolating MCC from Belulang grass.
The mechanism for thermal decomposition of cellulose and its …
2009年12月1日 · The cellulose has crystalline and amorphous zones according to the microfibrils periodically or randomly distributed along the orientation of cellulose fibrils. The amorphous zone is more actively than the crystalline zone, adding the complexities in thermal decomposition of cellulose (Severian, 2008).
Thermal Degradation of Cellulose Filaments and Nanocrystals
2020年7月24日 · Here, through a multi-analytical approach, we investigate the thermal degradation of microfibrillar cellulose filaments (CFs); acidic cellulose nanocrystals (CNC-H), containing sulfate half-ester groups on the surface; and neutralized cellulose nanocrystals (CNC-Na), where the protons are replaced by sodium ions.
Kinetic parameters for thermal decomposition of microcrystalline ...
2010年11月4日 · Here, the thermal behavior of BC, was compared with those of microcrystalline (MMC) and vegetal cellulose (VC). The kinetic parameters for the thermal decomposition step of the celluloses were determined by the Capela-Ribeiro non-linear isoconversional method.
Critical assessment of the thermal stability and degradation of ...
Despite nanocellulose’s performance benefits, its poor compatibility with hydrophobic polymer matrices poses challenges, limiting thermal stability and impeding widespread commercialization at higher processing temperatures.
The thermal degradation of microcrystalline cellulose, the …
Download scientific diagram | The thermal degradation of microcrystalline cellulose, the hydrogel without TiO2 (C10E1 sample) and hydrogel with TiO2 (C10E1Ti15 sample) under conditions: air...
Thermal degradation of microcrystalline cellulose in …
In this paper, the kinetics of enzymatic hydrolysis of cellulose samples with different structural characteristics has been studied using the equation of Avrami-Kolmogarov-Erofeev (AKE): ln (1-α) = -K tn, where α is conversion degree; K is effective rate constant; t is time, and n is effective order of the kinetic process.
Physicochemical Properties and Thermal Stability of Microcrystalline …
2020年8月19日 · The DSC/TGA analyses revealed that MCC samples present better thermal stability than their respective cellulose ones, with higher temperature of decomposition (more than 350 °C). Moreover, the use of a combined process yields to MCC with higher crystallinity and better thermal stability.
Physico-chemical properties and thermal stability of microcrystalline …
2014年4月15日 · Microcrystalline cellulose was successfully isolated from Alfa fibres. The physicochemical and thermal properties were comparatively investigated and explained this finding. Acid hydrolysis is a suitable method to produce microcrystalline cellulose. Alfa-MCC can potentially be used for pharmaceutics, foods and green composites applications.