The Effect of Different Plant Oil Impregnation and Hardening Temperatures on Physical-Mechanical Properties of Modified Biocomposite Boards Made of Hemp Shives and Corn Starch

In this study, tung tree and linseed drying oils, as well as semi-drying hempseed oil, were analyzed as the protective coatings for biocomposite boards (BcB) made of hemp shives, corn starch binder, and the performance-enhancing additives. The hydrophobization coatings were formed at 40, 90, and 120...

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Main Authors: Dovilė Vasiliauskienė, Giedrius Balčiūnas, Renata Boris, Agnė Kairytė, Arūnas Kremensas, Jaunius Urbonavičius
Format: Article
Language:English
Published: MDPI AG 2020-11-01
Series:Materials
Subjects:
Online Access:https://www.mdpi.com/1996-1944/13/22/5275
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spelling doaj-dd5975f254894de8ae9eac5f3ff55bd72020-11-25T04:08:34ZengMDPI AGMaterials1996-19442020-11-01135275527510.3390/ma13225275The Effect of Different Plant Oil Impregnation and Hardening Temperatures on Physical-Mechanical Properties of Modified Biocomposite Boards Made of Hemp Shives and Corn StarchDovilė Vasiliauskienė0Giedrius Balčiūnas1Renata Boris2Agnė Kairytė3Arūnas Kremensas4Jaunius Urbonavičius5Department of Chemistry and Bioengineering, Vilnius Gediminas Technical University, LT-10223 Vilnius, LithuaniaInstitute of Building Materials, Faculty of Civil Engineering, Vilnius Gediminas Technical University, LT-08217 Vilnius, LithuaniaInstitute of Building Materials, Faculty of Civil Engineering, Vilnius Gediminas Technical University, LT-08217 Vilnius, LithuaniaInstitute of Building Materials, Faculty of Civil Engineering, Vilnius Gediminas Technical University, LT-08217 Vilnius, LithuaniaInstitute of Building Materials, Faculty of Civil Engineering, Vilnius Gediminas Technical University, LT-08217 Vilnius, LithuaniaDepartment of Chemistry and Bioengineering, Vilnius Gediminas Technical University, LT-10223 Vilnius, LithuaniaIn this study, tung tree and linseed drying oils, as well as semi-drying hempseed oil, were analyzed as the protective coatings for biocomposite boards (BcB) made of hemp shives, corn starch binder, and the performance-enhancing additives. The hydrophobization coatings were formed at 40, 90, and 120 °C temperatures, respectively. The physical-mechanical properties such as the compressive strength, thermal conductivity, dimensional stability, water absorption, and swelling were tested. In addition, scanning electron microscopy (SEM) was employed for the analysis of the board microstructure to visualize the oil fills and impregnation in pores and voids. It was demonstrated that the compressive strength of oil-modified BcBs compared to uncoated BcBs (at 10% of relative deformation) increased by up to 4.5-fold and could reach up to 14 MPa, water absorption decreased up to 4-fold (from 1.34 to 0.37 kg/m<sup>2</sup>), swelling decreased up to 48% (from 8.20% to 4.26%), whereas the thermal conductivity remained unchanged with the thermal conductivity coefficient of around 0.085 W/m·K. Significant performance-enhancing properties were obtained due to the formation of a protective oil film when the tung tree oil was used.https://www.mdpi.com/1996-1944/13/22/5275oil-impregnationbiocomposite boardplant oilsphysical-mechanical propertieshemp shive aggregatecorn starch binder
collection DOAJ
language English
format Article
sources DOAJ
author Dovilė Vasiliauskienė
Giedrius Balčiūnas
Renata Boris
Agnė Kairytė
Arūnas Kremensas
Jaunius Urbonavičius
spellingShingle Dovilė Vasiliauskienė
Giedrius Balčiūnas
Renata Boris
Agnė Kairytė
Arūnas Kremensas
Jaunius Urbonavičius
The Effect of Different Plant Oil Impregnation and Hardening Temperatures on Physical-Mechanical Properties of Modified Biocomposite Boards Made of Hemp Shives and Corn Starch
Materials
oil-impregnation
biocomposite board
plant oils
physical-mechanical properties
hemp shive aggregate
corn starch binder
author_facet Dovilė Vasiliauskienė
Giedrius Balčiūnas
Renata Boris
Agnė Kairytė
Arūnas Kremensas
Jaunius Urbonavičius
author_sort Dovilė Vasiliauskienė
title The Effect of Different Plant Oil Impregnation and Hardening Temperatures on Physical-Mechanical Properties of Modified Biocomposite Boards Made of Hemp Shives and Corn Starch
title_short The Effect of Different Plant Oil Impregnation and Hardening Temperatures on Physical-Mechanical Properties of Modified Biocomposite Boards Made of Hemp Shives and Corn Starch
title_full The Effect of Different Plant Oil Impregnation and Hardening Temperatures on Physical-Mechanical Properties of Modified Biocomposite Boards Made of Hemp Shives and Corn Starch
title_fullStr The Effect of Different Plant Oil Impregnation and Hardening Temperatures on Physical-Mechanical Properties of Modified Biocomposite Boards Made of Hemp Shives and Corn Starch
title_full_unstemmed The Effect of Different Plant Oil Impregnation and Hardening Temperatures on Physical-Mechanical Properties of Modified Biocomposite Boards Made of Hemp Shives and Corn Starch
title_sort effect of different plant oil impregnation and hardening temperatures on physical-mechanical properties of modified biocomposite boards made of hemp shives and corn starch
publisher MDPI AG
series Materials
issn 1996-1944
publishDate 2020-11-01
description In this study, tung tree and linseed drying oils, as well as semi-drying hempseed oil, were analyzed as the protective coatings for biocomposite boards (BcB) made of hemp shives, corn starch binder, and the performance-enhancing additives. The hydrophobization coatings were formed at 40, 90, and 120 °C temperatures, respectively. The physical-mechanical properties such as the compressive strength, thermal conductivity, dimensional stability, water absorption, and swelling were tested. In addition, scanning electron microscopy (SEM) was employed for the analysis of the board microstructure to visualize the oil fills and impregnation in pores and voids. It was demonstrated that the compressive strength of oil-modified BcBs compared to uncoated BcBs (at 10% of relative deformation) increased by up to 4.5-fold and could reach up to 14 MPa, water absorption decreased up to 4-fold (from 1.34 to 0.37 kg/m<sup>2</sup>), swelling decreased up to 48% (from 8.20% to 4.26%), whereas the thermal conductivity remained unchanged with the thermal conductivity coefficient of around 0.085 W/m·K. Significant performance-enhancing properties were obtained due to the formation of a protective oil film when the tung tree oil was used.
topic oil-impregnation
biocomposite board
plant oils
physical-mechanical properties
hemp shive aggregate
corn starch binder
url https://www.mdpi.com/1996-1944/13/22/5275
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