Surface characterization by XPS, contact angle measurements and ToF-SIMS of cellulose fibers partially esterified with fatty acids

Freire, Carmen S.R.; Silvestre, Armando J. D.; Neto, Carlos Pascoal; Gandini, Alessandro; Fardim, Pedro; Holmbom, Bjarne

doi:10.1016/j.jcis.2006.04.074

Cited by 57 publications

(42 citation statements)

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“…4B-C) provided evidence of the strong interfacial adhesion between the two components, as shown by the cellulose fibers breaking during fracture and also by their good dispersion within the matrix, without aggregates formation. This behavior is the result of the surface acylation that conferred a non-polar character to the cellulose fiber surface [6,7]. Similar results were observed for cellulose fibers with different fatty moieties and DS values, which corroborates the surface energy values previously reported [6,7].…”

Section: Morphologysupporting

confidence: 89%

“…This behavior clearly reflected the presence of long chain aliphatic moieties onto the fibers surface, after esterification with the fatty acyl chlorides, resulting in a considerable increase in their hydrophobic character, as previously reported [6,7]. However, for the acylated cellulose-based composites, the water uptake was not influenced to a great extent by the fatty acid chain length and DS, except of course for very low DS values (i.e.…”

Section: Water Uptakesupporting

confidence: 80%

“…2B). It seems that in this case, the aspect ratio played the major role on the mechanical properties of the PE-composites, since severe reaction conditions (time and the use of a swelling solvent) increased the DS, but led, in general, to a considerable decrease in the fiber length, as previously reported [6,7], and therefore in the aspect ratio. These results are in agreement with published data, where the LDPE composites with unmodified fibers presented better mechanical properties than those with fibers esterified for 4 h in toluene with dodecanoyl and octadecanoyl chloride [12].…”

Section: Mechanical Propertiessupporting

confidence: 71%

“…For example, the acylation of cellulose fibers with fatty acids [4][5][6][7][8][9] represents an interesting way to prepare reinforcing elements for composites with common thermoplastic matrices, such as polyethylene (PE). This strategy is particularly relevant because of the renewable and biodegradable nature of fatty acids and, of course, of their predominantly non-polar nature.…”

Section: Introductionmentioning

confidence: 99%

“…As part of a wider research project on the heterogeneous chemical modification of cellulose fibers [6,7,[13][14][15][16] for new applications (composites, paper materials, etc) we have been studying the preparation and characterization of composite materials based on acylated cellulose fibers and low-density polyethylene (LDPE). In this investigation, cellulose fibers modified with different fatty acids (C6, C12, C18 and C22) and different DS were investigated.…”

Section: Introductionmentioning

confidence: 99%

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Composites based on acylated cellulose fibers and low-density polyethylene: Effect of the fiber content, degree of substitution and fatty acid chain length on final properties

Freire

Silvestre

Neto

et al. 2008

Composites Science and Technology

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a b s t r a c tLow-density polyethylene was filled with unmodified and fatty acid (hexanoic, dodecanoic, octadecanoic and docosanoic acids) esterified cellulose fibers. The thermal and mechanical properties, morphology and the water absorption behavior of the ensuing composites were investigated. The chemical modification of the cellulose fibers with fatty acids clearly improved the interfacial adhesion with the matrix and hence the mechanical properties of the composites and decreased their water uptake capacity. The performance of the composites was strongly affected by the degree of substitution (DS) and the fatty chain length as indicated by the fact that esterified cellulose fibers with low DS gave composites with better mechanical properties.

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Section: Morphologysupporting

confidence: 89%

Section: Water Uptakesupporting

confidence: 80%

Section: Mechanical Propertiessupporting

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Composites based on acylated cellulose fibers and low-density polyethylene: Effect of the fiber content, degree of substitution and fatty acid chain length on final properties

Freire

Silvestre

Neto

et al. 2008

Composites Science and Technology

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Production, Chemistry and Properties of Cellulose‐Based Materials

Belgacem¹,

Gandini²

2011

Biopolymers – New Materials for Sustainable Films and Coatings

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Current literature in mass spectrometry

2007

J. Mass Spectrom.

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Surface characterization by XPS, contact angle measurements and ToF-SIMS of cellulose fibers partially esterified with fatty acids

Cited by 57 publications

References 21 publications

Composites based on acylated cellulose fibers and low-density polyethylene: Effect of the fiber content, degree of substitution and fatty acid chain length on final properties

Composites based on acylated cellulose fibers and low-density polyethylene: Effect of the fiber content, degree of substitution and fatty acid chain length on final properties

Production, Chemistry and Properties of Cellulose‐Based Materials

Current literature in mass spectrometry

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