Effect of Temperature and Clamping during Heat Treatment on Physical and Mechanical Properties of Okan (Cylicodiscus gabunensis [Taub.] Harms) Wood
The objective was to evaluate the effect of temperature and clamping method during heat treatment on the properties of high density Okan wood. Heat treatment of sapwood and heartwood was conducted using an electric oven with a programmable controller at 160 °C, 180 °C, 200 °C, and 220 °C for 2 h. Ph...
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| Format: | Article |
| Language: | English |
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North Carolina State University
2015-08-01
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| Series: | BioResources |
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| Online Access: | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_10_4_6961_Wahyu_Temperature_Clamping_Heat_Treatment |
| _version_ | 1819231846710378496 |
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| author | Hidayat Wahyu Jae Hyuk Jang Se Hwi Park Yue Qi Fauzi Febrianto Seung Hwan Lee Nam Hun Kim |
| author_facet | Hidayat Wahyu Jae Hyuk Jang Se Hwi Park Yue Qi Fauzi Febrianto Seung Hwan Lee Nam Hun Kim |
| author_sort | Hidayat Wahyu |
| collection | DOAJ |
| description | The objective was to evaluate the effect of temperature and clamping method during heat treatment on the properties of high density Okan wood. Heat treatment of sapwood and heartwood was conducted using an electric oven with a programmable controller at 160 °C, 180 °C, 200 °C, and 220 °C for 2 h. Physical and mechanical properties were compared before and after the heat treatment process. The color change (E*), weight loss, and volume shrinkage increased with increasing temperature, whereas the equilibrium moisture content (EMC) and water absorption (WA) decreased in both types of wood. The wood density was not affected by temperature, and the magnitude of E* in sapwood was the highest, while the magnitude of weight loss, volume shrinkage, EMC, and WA in heartwood was higher than in sapwood. The clamping method affected E* in heartwood only, while the weight loss, volume shrinkage, EMC, and WA was affect in both types of wood. A significant reduction in the mechanical properties occurred after heat treatment at 200 °C and 220 °C. The reduction of MOR, MOE, and shear strength in heartwood was greater than in sapwood, while the compressive strength reduction in sapwood was the highest. |
| first_indexed | 2024-12-23T11:51:27Z |
| format | Article |
| id | doaj.art-5b711a76700143738987961da0d9f67b |
| institution | Directory Open Access Journal |
| issn | 1930-2126 1930-2126 |
| language | English |
| last_indexed | 2024-12-23T11:51:27Z |
| publishDate | 2015-08-01 |
| publisher | North Carolina State University |
| record_format | Article |
| series | BioResources |
| spelling | doaj.art-5b711a76700143738987961da0d9f67b2022-12-21T17:48:12ZengNorth Carolina State UniversityBioResources1930-21261930-21262015-08-011046961697410.15376/biores.10.4.6961-6974Effect of Temperature and Clamping during Heat Treatment on Physical and Mechanical Properties of Okan (Cylicodiscus gabunensis [Taub.] Harms) WoodHidayat Wahyu0Jae Hyuk Jang1Se Hwi Park2Yue Qi3Fauzi Febrianto4Seung Hwan Lee5Nam Hun Kim6 Lampung University; IndonesiaKangwon National University; Korea, Republic OfKangwon National University; Korea, Republic OfDepartment of Forest Biomaterials Engineering, College of Forest and Environmental Sciences, Kangwon National University, Chuncheon 200-701, Republic of Korea; Korea, Republic OfBogor Agricultural UniversityKangwon National University; Korea, Republic OfKangwon National University; Korea, Republic OfThe objective was to evaluate the effect of temperature and clamping method during heat treatment on the properties of high density Okan wood. Heat treatment of sapwood and heartwood was conducted using an electric oven with a programmable controller at 160 °C, 180 °C, 200 °C, and 220 °C for 2 h. Physical and mechanical properties were compared before and after the heat treatment process. The color change (E*), weight loss, and volume shrinkage increased with increasing temperature, whereas the equilibrium moisture content (EMC) and water absorption (WA) decreased in both types of wood. The wood density was not affected by temperature, and the magnitude of E* in sapwood was the highest, while the magnitude of weight loss, volume shrinkage, EMC, and WA in heartwood was higher than in sapwood. The clamping method affected E* in heartwood only, while the weight loss, volume shrinkage, EMC, and WA was affect in both types of wood. A significant reduction in the mechanical properties occurred after heat treatment at 200 °C and 220 °C. The reduction of MOR, MOE, and shear strength in heartwood was greater than in sapwood, while the compressive strength reduction in sapwood was the highest.http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_10_4_6961_Wahyu_Temperature_Clamping_Heat_TreatmentHeat treatmentOkan woodTemperatureClamping methodPhysical and mechanical properties |
| spellingShingle | Hidayat Wahyu Jae Hyuk Jang Se Hwi Park Yue Qi Fauzi Febrianto Seung Hwan Lee Nam Hun Kim Effect of Temperature and Clamping during Heat Treatment on Physical and Mechanical Properties of Okan (Cylicodiscus gabunensis [Taub.] Harms) Wood BioResources Heat treatment Okan wood Temperature Clamping method Physical and mechanical properties |
| title | Effect of Temperature and Clamping during Heat Treatment on Physical and Mechanical Properties of Okan (Cylicodiscus gabunensis [Taub.] Harms) Wood |
| title_full | Effect of Temperature and Clamping during Heat Treatment on Physical and Mechanical Properties of Okan (Cylicodiscus gabunensis [Taub.] Harms) Wood |
| title_fullStr | Effect of Temperature and Clamping during Heat Treatment on Physical and Mechanical Properties of Okan (Cylicodiscus gabunensis [Taub.] Harms) Wood |
| title_full_unstemmed | Effect of Temperature and Clamping during Heat Treatment on Physical and Mechanical Properties of Okan (Cylicodiscus gabunensis [Taub.] Harms) Wood |
| title_short | Effect of Temperature and Clamping during Heat Treatment on Physical and Mechanical Properties of Okan (Cylicodiscus gabunensis [Taub.] Harms) Wood |
| title_sort | effect of temperature and clamping during heat treatment on physical and mechanical properties of okan cylicodiscus gabunensis taub harms wood |
| topic | Heat treatment Okan wood Temperature Clamping method Physical and mechanical properties |
| url | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_10_4_6961_Wahyu_Temperature_Clamping_Heat_Treatment |
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