Fully wood based novel translucent and thermoplastic materials by solvent-free esterification

Sejati, Prabu Satria; Akong, Firmin Obounou; Torloting, Camile; Fradet, Frédéric; Gérardin, Philippe

doi:10.1039/d2ra06555j

Cited by 7 publications

(4 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As the length of the fatty chain increases, the first deformations were observed at 196, 72, and 56 • C for C3, C10, and C16, respectively. This softening temperature indicated the loss of film rigidity related to the fatty chain grafted to the wood [20,21]. The second deformation was observed between temperatures of 171 and 266 • C. Glass transition temperature observations were reported in the same range of temperature, corresponding to the reorganization of the fatty acid chain and cellulose backbone in oleic-acid-esterified cellulose [26].…”

Section: Non Modmentioning

confidence: 77%

“…As the length of the fatty chain increases, the first deformations were observed at 196, 72, and 56 °C for C3, C10, and C16, respectively. This softening temperature indicated the loss of film rigidity related to the fatty chain grafted to the wood [20,21]. The second deformation was observed between temperatures of 171 and 266 °C.…”

Section: Application Of Esterified Wood As New Bioplasticmentioning

confidence: 95%

“…film rigidity related to the fatty chain grafted to the wood [20,21]. The second deformation was observed between temperatures of 171 and 266 °C.…”

Section: Non Modmentioning

confidence: 96%

“…Most of the procedures discussed above have used large amounts of reagents at relatively high temperatures, which restricts their widespread use in industrial applications. Our previous study successfully converted wood into thermoplastic materials using myristic acid as an esterifying agent and TFAA as a promoter [20]. The influence of fatty acid chain lengths on esterified sample properties was also investigated [21].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Wood Esterification by Fatty Acids Using Trifluoroacetic Anhydride as an Impelling Agent and Its Application for the Synthesis of a New Bioplastic

Sejati,

Obounou Akong,

Fradet

et al. 2023

Materials

Self Cite

View full text Add to dashboard Cite

Fatty acids (FA) and their derivatives with long alkyl chain structures are good candidates for wood esterification to confer thermoplastic properties to wood. Nevertheless, they do not react easily with hydroxyl groups of wood. In this study, we investigated the reactivity of wood with various fatty acids of different chain lengths using trifluoroacetic anhydride (TFAA) as the impelling agent in various reaction conditions. Generally, the esterification of fatty acids without solvents resulted in higher Weight Percentage Gain (WPG) and ester content than the reaction in the presence of CH2Cl2. The esterification reaction could be performed effectively at room temperature, though an increased reaction temperature provoked degradation of the esterified wood. WPG of 67% was obtained for the C3 and 253% for the C16 alkyl chain analogs, respectively. Nevertheless, the ester content was fairly uniform, with values between 10.60 and 11.81 mmol ester/gram of wood for all chain lengths. A higher quantity of reagent led to higher ester content, which tended to stabilize after a ratio of 1:4 wood and TFAA/FA. The esterification reaction was performed rapidly, with an ester content between 7.65 and 9.94 mmol ester/gram of wood being achieved only after 15 min of reaction. Fourier transform infrared spectroscopy (FTIR) analysis was performed to confirm the drastic chemical changes of wood before and after esterification. Morphological observation by scanning electron microscope (SEM), softening measurement by thermomechanical analysis (TMA), and contact angle measurements demonstrated the possibility of esterified spruce wood being applied as a new bioplastic.

show abstract

Section: Non Modmentioning

confidence: 77%

Section: Application Of Esterified Wood As New Bioplasticmentioning

confidence: 95%

“…film rigidity related to the fatty chain grafted to the wood [20,21]. The second deformation was observed between temperatures of 171 and 266 °C.…”

Section: Non Modmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations