Development of cellulose based light weight polymer composites

Rajapaksha, L.D; Saumyadi, H. A. D.; Samarasekara, A.M.P.B.; Amarasinghe, D.A.S.; Karunanayake, L.

doi:10.1109/mercon.2017.7980478

Cited by 27 publications

(2 citation statements)

References 11 publications

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“…Then, the solution was heated to 70 °C for 2 hours and the concentrated solution was transferred to a flat ceramic plate for oven drying at 70 °C. Ultimately, surface modified or silylated NFC was collected after the complete evaporation of ethanol (Rajapaksha et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Investigation of mechanical properties of nanocellulose reinforced synthetic polymer composite

et al. 2018

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In Sri Lanka, a considerable percentage of agricultural waste such as rice straw and sugarcane bagasse is discharged to the environment without a commercial use and forms a huge organic environmental pollution. Therefore, the agricultural wastes can be used to extract cellulose and indirectly apply an additional value to the abundant priceless wastes. Nanocellulose is a cellulosic material which has at least one dimension in the nanometre range and has a potential for polymer reinforcement. Based on their structure nanocellulose extracted from plant species are categorised into two; nanofibrillated cellulose (NFC) and nanocrystalline cellulose (NCC). The present paper discussed the surface modification of NFC using Silane coupling agent (Si-69) and fabrication of silylated NFC reinforced polypropylene (PP) composites with different loadings of NFC from 0-5 wt. % by adding 0.5 wt. % per sample. The mechanical properties of the composite samples were compared with respect to neat PP and Scanning electron microscope (SEM), Fourier-transform infrared spectroscopy, X-ray diffraction, mechanical tests (tensile strength, percentage elongation at break, impact strength and hardness), percentage water absorption and melt flow index (MFI) were used to characterize the developed composites. The experimental results emphasize the wide improvement of mechanical properties with extremely narrow reduction of water absorption and processability of silylated NFC based PP than pure PP. The 3.5% silylated NFC reinforced PP composite indicated the highest improvement in mechanical properties such as hardness, tensile and impact strength, a 7.4%, 12.6%, and 86.1% higher than the neat PP, respectively.

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Section: Introductionmentioning

confidence: 99%

Investigation of mechanical properties of nanocellulose reinforced synthetic polymer composite

et al. 2018

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“…22 It is also efficient in facilitating dispersity of natural polymers with synthetic matrix and making them more compatible with human-made polymers. [31][32][33][34][35][36][37] Silane modification can be widely applied not only to natural fibres but also i.e. metals, pigments, glass and others.…”

Section: Introductionmentioning

confidence: 99%

Reactivity of Microcrystalline Cellulose with Methyltrimethoxysilane and 3-(2-Aminoethylamino) propyltrimethoxysilanes

Pietras

Maciejewski

Mazela

2021

ACSi

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In the presented research, two trialkoxysilanes were used to investigate their reactivity with microcrystalline cellulose (MCC) applied as a model material. As a continuation of the previous study, the research aimed at evaluation of the durability and potential reversibility of the silane treatment. Two different solvents and a mixture thereof were used for cellulose modification. The influence of amino group/pH, an excess of silanes and re-soaking with water on binding with cellulose was examined. The results obtained confirm that both selected silanes can effectively modify MCC. However, the treatment with 3-(2-aminoethylamino)propyltrimethoxysilane occurred more effective than with Methyltrimethoxysilane due to the presence of amino groups. Among the three tested solvents, the most effective was pure water. In contrast, the use of ethanol and a mixture of ethanol and water gave significantly worse results. Summarising, the presented research clearly shows how important the type of the functional group in alkoxysilanes is for its chemical reactivity with natural polymers, which is crucial for their application in waterlogged wood conservation.

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Sunflower oil-based MCC surface modification to achieve improved thermomechanical properties of a polypropylene composite

et al. 2020

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Development of cellulose based light weight polymer composites

Cited by 27 publications

References 11 publications

Investigation of mechanical properties of nanocellulose reinforced synthetic polymer composite

Investigation of mechanical properties of nanocellulose reinforced synthetic polymer composite

Reactivity of Microcrystalline Cellulose with Methyltrimethoxysilane and 3-(2-Aminoethylamino) propyltrimethoxysilanes

Sunflower oil-based MCC surface modification to achieve improved thermomechanical properties of a polypropylene composite

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