Creep Behavior of Wood Plasticized by Moisture and Temperature

Moisture in wood acting as a plasticizer will strongly affect the wood’s viscoelastic properties. However, achieving the desired moisture content (MC) at elevated temperatures during creep tests is difficult. The aim of this study is to accurately and systematically investigate the creep behavior of...

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Main Authors: Fangyuan Jin, Zhihong Jiang, Qinglin Wu
Format: Article
Language:English
Published: North Carolina State University 2015-11-01
Series:BioResources
Subjects:
Online Access:http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_11_1_827_Jin_Creep_Behavior_Wood_Plasticized_Moisture
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author Fangyuan Jin
Zhihong Jiang
Qinglin Wu
author_facet Fangyuan Jin
Zhihong Jiang
Qinglin Wu
author_sort Fangyuan Jin
collection DOAJ
description Moisture in wood acting as a plasticizer will strongly affect the wood’s viscoelastic properties. However, achieving the desired moisture content (MC) at elevated temperatures during creep tests is difficult. The aim of this study is to accurately and systematically investigate the creep behavior of birch wood at high temperatures. Experiments were conducted using a dynamic mechanical analyzer with a relative humidity accessory coupled with polyvinylidene chloride (PVDC) film for wrapping samples. Creep behavior was examined at six MCs (0%, 6%, 12%, 18%, 24%, >30%) and 11 temperatures (5 to 105 °C). The MC of wood was strictly and accurately controlled during creep tests. Instantaneous compliance (IC) and creep compliance (CC) increased with the increase of both temperature and MC, with significant changes at higher temperatures and MCs. The effects on IC and CC were more pronounced when the subject was influenced by MC, with readings approximately three times and one time greater than those influenced by temperature, respectively. Dramatic increases in CC were found at certain temperatures and MC values. There was a complex interaction between temperature and MC on IC and CC.
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spelling doaj.art-5cde3cd559ac4819af71f83d4a3fff2b2022-12-21T16:54:10ZengNorth Carolina State UniversityBioResources1930-21261930-21262015-11-0111182783810.15376/biores.11.1.827-838Creep Behavior of Wood Plasticized by Moisture and TemperatureFangyuan Jin0Zhihong Jiang1Qinglin Wu2Zhejiang A & F University; ChinaZhejiang A & F University; ChinaLouisiana State University; United StatesMoisture in wood acting as a plasticizer will strongly affect the wood’s viscoelastic properties. However, achieving the desired moisture content (MC) at elevated temperatures during creep tests is difficult. The aim of this study is to accurately and systematically investigate the creep behavior of birch wood at high temperatures. Experiments were conducted using a dynamic mechanical analyzer with a relative humidity accessory coupled with polyvinylidene chloride (PVDC) film for wrapping samples. Creep behavior was examined at six MCs (0%, 6%, 12%, 18%, 24%, >30%) and 11 temperatures (5 to 105 °C). The MC of wood was strictly and accurately controlled during creep tests. Instantaneous compliance (IC) and creep compliance (CC) increased with the increase of both temperature and MC, with significant changes at higher temperatures and MCs. The effects on IC and CC were more pronounced when the subject was influenced by MC, with readings approximately three times and one time greater than those influenced by temperature, respectively. Dramatic increases in CC were found at certain temperatures and MC values. There was a complex interaction between temperature and MC on IC and CC.http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_11_1_827_Jin_Creep_Behavior_Wood_Plasticized_MoistureDMATemperatureWoodCreep complianceMoisture content
spellingShingle Fangyuan Jin
Zhihong Jiang
Qinglin Wu
Creep Behavior of Wood Plasticized by Moisture and Temperature
BioResources
DMA
Temperature
Wood
Creep compliance
Moisture content
title Creep Behavior of Wood Plasticized by Moisture and Temperature
title_full Creep Behavior of Wood Plasticized by Moisture and Temperature
title_fullStr Creep Behavior of Wood Plasticized by Moisture and Temperature
title_full_unstemmed Creep Behavior of Wood Plasticized by Moisture and Temperature
title_short Creep Behavior of Wood Plasticized by Moisture and Temperature
title_sort creep behavior of wood plasticized by moisture and temperature
topic DMA
Temperature
Wood
Creep compliance
Moisture content
url http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_11_1_827_Jin_Creep_Behavior_Wood_Plasticized_Moisture
work_keys_str_mv AT fangyuanjin creepbehaviorofwoodplasticizedbymoistureandtemperature
AT zhihongjiang creepbehaviorofwoodplasticizedbymoistureandtemperature
AT qinglinwu creepbehaviorofwoodplasticizedbymoistureandtemperature