Comparison of alkali treated sugarcane bagasse and softwood cellulose/polypropylene composites

Mohomane, Samson Masulubanye; Linganiso, Linda Z.; Songca, Sandile P.; Motloung, S.V.; Koao, L.F.; Motaung, T.E.

doi:10.1080/14658011.2019.1639027

Cited by 5 publications

(2 citation statements)

References 35 publications

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“…This is a result of the fact that CNC is a type of stiff filler. As a general rule, cellulose particles contain a high concentration of hydroxyl and are incompatible with the non‐polar matrix 23 …”

Section: Resultsmentioning

confidence: 99%

Preparation of BTCA‐esterified cellulose nanocrystals and effects on mechanical and thermal properties of polypropylene composites

Zhao

Wei

et al. 2022

J of Applied Polymer Sci

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In this study, cross‐linked cellulose nanocrystals (CNC) were esterified using 1,2,3,4‐tricarboxylic acid (BTCA) to decrease the hydroxyl content of the nanocellulose, control its hydrophilic/hydrophobic degree, and improve its compatibility with the polypropylene (PP) matrix. The mechanical and physical properties of nanocellulose‐reinforced polypropylene composites were investigated after they were manufactured via melt extrusion using a twin‐screw extruder. FTIR and XPS analysis revealed that the nanocellulose chain was successfully esterified utilizing BTCA. The results from SEM and Mapping demonstrated that the nanocellulose was spread equally throughout the matrix. By characterizing the 5 wt% CNC/PP composite material with DMA and tensile testing devices, the elongation at break decreases, the rigidity increases, and the tensile strength increases to 50.5 MPa, a 25.5% increase over pure polypropylene. Simultaneously, DSC data demonstrated that nanocellulose provided a heterogeneous nucleation site, expedited polypropylene crystallization, and was advantageous for polypropylene processing. According to the results of TG/DTG, esterified CNC/PP composites containing 5% CNC had the highest thermal resistance, with Tonset and Tmax increasing by up to 66 and 11.6°C, respectively, when compared to pure PP. Following a thorough investigation and evaluation of the samples' mechanical and thermal properties, it was determined that BTCA esterification cross‐linking is an effective method for surface modification of nanocellulose, as it increases the compatibility of nanocellulose with polypropylene, improves the mechanical properties of polypropylene, and thus expands its application range.

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Section: Resultsmentioning

confidence: 99%

Preparation of BTCA‐esterified cellulose nanocrystals and effects on mechanical and thermal properties of polypropylene composites

Zhao

Wei

et al. 2022

J of Applied Polymer Sci

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“…There are several targets set to affect, improve, and change physicochemical characteristics of the solid biomass such that there is increased usability, thus adding value and accessibility to biomass materials. 19,[25][26][27] Concerns about global warming and wastewater-purification processes. A cheap biomass, Konjac galactomannan enhances the hydration ability of hydrogels for water activation and provides plenty of hydroxyl groups for the formation of hydrogen and chelating bonds to remove contaminants effectively.…”

Section: Solid-state Biomass For Strong Materialsmentioning

confidence: 99%

Biomass conversion into recyclable strong materials

et al. 2022

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We review the conversion of waste biomass into recyclable materials using different methods of materials treatment such as thermal, mechanical and chemical processes. Renewable and sustainable biomaterials are increasingly becoming alternatives for synthetic strong materials, e.g. composites. The type of treatment of biomaterial will determine the form to which the biomass is converted and its subsequent applications. It is anticipated that the transformation will produce materials that have superior qualities, properties and characteristics. These include biopolymer materials such as cellulose and hemicellulose, which have all been obtained as products of treatment and extraction from plant materials such as lignocellulose. The main reason for inefficient biomass conversion has been found to be poor manipulation of composite properties during biomass treatment process. The treatment processes are expected to facilitate dehydration, dehydrogenation, deoxygenation and decarboxylation of the bulk biomass materials to target the formation of new compounds that may be used to make strong materials.

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