Wettability of oil heat-treated bamboo and bonding strength of laminated bamboo board

• In order to improve the interface properties of bamboo in laminated board applications for severe outdoor environment, bamboo sheets were heat treated in soybean oil and post oil extracted in this paper. Following oil heat treatment at 180 degrees C for 2 h, bamboo specimens were either removed from the oil immediately or left in the oil until they were cooled to room temperature. Contact angle measurements before and after oil heat treatment showed a significant increase in the hydrophobicity of bamboo, and these changes differed based on the process parameters. Results from scanning electron microscopy and Fourier transform infrared spectroscopy indicated that these phenomena may be due to the combination effect of the change of chemical composition and the surplus oil on the surface of modified bamboo. Then, the ethanol extraction process was subsequently applied to remove the surplus oil. Finally, the results of bonding strength tests on laminated bamboo boards prepared from oil heat-treated samples which thereafter had been subjected to ethanol extraction showed acceptable interface properties, although lower than the reference.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Materialteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Materials Engineering (hsv//eng)

Nyckelord

Bamboo

Bonding strength

Laminated bamboo board

Oil heat treatment

Wettability

Chemical bonds

Diffusion bonding

Ethanol

Extraction

Fourier transform infrared spectroscopy

Heat treatment

Laminating

Oil shale

Scanning electron microscopy

Wetting

Chemical compositions

Combination effects

Ethanol extraction

Interface property

Laminated bamboo

Outdoor environment

Process parameters

Soybean oil

chemical composition

FTIR spectroscopy

heating

hydrophobicity

vegetable oil

Glycine max

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)