FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2146245764> ?p ?o ?g. }

• W2146245764 abstract "Cellulose is the main constituent of plants. In the cell wall of plants, cellulose nanofibrils act as a reinforcing agent embedded in a matrix of hemicelluloses and lignin, forming a nanocomposite material. Manmade nanocellulose reinforced composites began to receive attention approximately two decades ago when isolation methods for nanocellulose were developed. However, studies on the deformation of these novel materials have been limited.The effect of the composites' preparation method on the mechanical properties was investigated and compared with theoretical models. Deformation mechanisms in composites reinforced with low weight fractions of different types of nanocellulose were investigated along with the effects of acetylation. Then the stress-transfer and micromechanics of composites reinforced with higher weight fractions of nanocellulose were studied using Raman spectroscopy. Finally, the effect of nanocellulose on thermomechanical properties of the composites and their behaviour in moist environment were addressed.The results show that the preparation method has an influence on the final mechanical properties of composites. Degassing of the nanocellulose/polymer mixture showed a positive effect on the Young's modulus and tensile strength at lower weight fractions of nanocellulose due to the lower viscosities of the mixtures. However, degassing had no effect on the density of the composites. Chemical modification significantly improved the dispersion of nanocellulose in non-polar media as Raman imaging revealed. In turn, the mechanical properties and deformation of the composites was different with respect to the degree of substitution. The toughening of poly(lactic) acid by the addition of low weight fractions of nanocellulose was attributed to extensive polymer crazing which was also dependent on the morphology and degree of substitution of the nanocellulose. Using Raman spectroscopy it was shown that the deformation micromechanics at high weight fractions of nanocellulose are network dominated. This leads to a stress transfer mechanisms similar to a composite within a composite, where composite strength is dependent on stress transfer within the dense network. The mechanical properties of the composites were improved as well as the glass transition temperature. The crystallization behaviour and, in turn, crystallinity of the composites was observed to be impeded at large weight fractions of nanocellulose. Furthermore, the composites had better mechanical properties in humid environments compared to the pure PLA matrix and the pure nanocellulose film. Thus embedding of hydrophilic fibrils in a hydrophobic matrix improves the performance of these materials in humid environments." @default.
• W2146245764 created "2016-06-24" @default.
• W2146245764 creator A5069870213 @default.
• W2146245764 date "2012-01-01" @default.
• W2146245764 modified "2023-09-27" @default.
• W2146245764 title "Deformation and fracture mechanisms in nanocellulose reinforced composites" @default.
• W2146245764 cites W1228998594 @default.
• W2146245764 cites W1501122178 @default.
• W2146245764 cites W1510514486 @default.
• W2146245764 cites W1542664609 @default.
• W2146245764 cites W1558809445 @default.
• W2146245764 cites W1565082402 @default.
• W2146245764 cites W1606603686 @default.
• W2146245764 cites W1806313454 @default.
• W2146245764 cites W189414082 @default.
• W2146245764 cites W1964253821 @default.
• W2146245764 cites W1965266378 @default.
• W2146245764 cites W1966262614 @default.
• W2146245764 cites W1967479815 @default.
• W2146245764 cites W1967581757 @default.
• W2146245764 cites W1967871759 @default.
• W2146245764 cites W1968720142 @default.
• W2146245764 cites W1970485733 @default.
• W2146245764 cites W1970667858 @default.
• W2146245764 cites W1970803484 @default.
• W2146245764 cites W1971974459 @default.
• W2146245764 cites W1972399451 @default.
• W2146245764 cites W1972843429 @default.
• W2146245764 cites W1972994476 @default.
• W2146245764 cites W1980173134 @default.
• W2146245764 cites W1981853130 @default.
• W2146245764 cites W1984292853 @default.
• W2146245764 cites W1987358047 @default.
• W2146245764 cites W1988530888 @default.
• W2146245764 cites W1989993440 @default.
• W2146245764 cites W1990642834 @default.
• W2146245764 cites W1993568953 @default.
• W2146245764 cites W1994852665 @default.
• W2146245764 cites W1997018702 @default.
• W2146245764 cites W1998148280 @default.
• W2146245764 cites W1999249959 @default.
• W2146245764 cites W1999823245 @default.
• W2146245764 cites W2001543916 @default.
• W2146245764 cites W2003957719 @default.
• W2146245764 cites W2004117776 @default.
• W2146245764 cites W2004513956 @default.
• W2146245764 cites W2005384265 @default.
• W2146245764 cites W2006838597 @default.
• W2146245764 cites W2007494138 @default.
• W2146245764 cites W2007832956 @default.
• W2146245764 cites W2008151211 @default.
• W2146245764 cites W2008522047 @default.
• W2146245764 cites W2011346164 @default.
• W2146245764 cites W2011564720 @default.
• W2146245764 cites W2012397262 @default.
• W2146245764 cites W2012811317 @default.
• W2146245764 cites W2020375047 @default.
• W2146245764 cites W2030029350 @default.
• W2146245764 cites W2033246836 @default.
• W2146245764 cites W2034069314 @default.
• W2146245764 cites W2034243129 @default.
• W2146245764 cites W2035416360 @default.
• W2146245764 cites W2040430782 @default.
• W2146245764 cites W2041435841 @default.
• W2146245764 cites W2042559250 @default.
• W2146245764 cites W2043485501 @default.
• W2146245764 cites W2043955541 @default.
• W2146245764 cites W2044169987 @default.
• W2146245764 cites W2045595926 @default.
• W2146245764 cites W2045878629 @default.
• W2146245764 cites W2046360695 @default.
• W2146245764 cites W2048252761 @default.
• W2146245764 cites W2048583074 @default.
• W2146245764 cites W2054141355 @default.
• W2146245764 cites W2055608684 @default.
• W2146245764 cites W2059007444 @default.
• W2146245764 cites W2061491882 @default.
• W2146245764 cites W2068111263 @default.
• W2146245764 cites W2070270017 @default.
• W2146245764 cites W2071909378 @default.
• W2146245764 cites W2072443063 @default.
• W2146245764 cites W2074084949 @default.
• W2146245764 cites W2076125538 @default.
• W2146245764 cites W2076352514 @default.
• W2146245764 cites W2076658816 @default.
• W2146245764 cites W2079672397 @default.
• W2146245764 cites W2080038134 @default.
• W2146245764 cites W2084810449 @default.
• W2146245764 cites W2085157691 @default.
• W2146245764 cites W2087411850 @default.
• W2146245764 cites W2087512586 @default.
• W2146245764 cites W2094846708 @default.
• W2146245764 cites W2095044737 @default.
• W2146245764 cites W2095176072 @default.
• W2146245764 cites W2103711007 @default.
• W2146245764 cites W2109520483 @default.
• W2146245764 cites W2116032797 @default.
• W2146245764 cites W2120677909 @default.
• W2146245764 cites W2125464959 @default.
• W2146245764 cites W2126042518 @default.

• next