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预处理对竹束及竹木重组材性能影响
  • ISSN号:1001-9731
  • 期刊名称:功能材料
  • 时间:2014.8
  • 页码:15114-15117
  • 分类:TB332[一般工业技术—材料科学与工程]
  • 作者机构:[1]中南林业科技大学材料科学与工程学院,长沙410004
  • 相关基金:国家自然科学基金资助项目(31370569);湖南省科技重大专项资助项目(2011FJ1006);湖南省市校产学研合作产业化培育资助项目(11cy027).
  • 相关项目:木材-无机纳米增强相复合体系中纳米刚性粒子弥散强化机制研究
中文摘要:

采用接触角/界面张力测定仪、电子顺磁共振波谱(ESR)、X 射线衍射仪(XRD)、傅里叶变换红外光谱仪(FT-IR)分析了炭化、微波处理后竹束的物理化学性能,利用经过不同预处理的竹束制备了竹木重组材,研究了预处理对竹木重组材物理力学性能的影响。结果表明,炭化处理后竹束表面接触角变大,微波处理后竹束表面接触角变小;炭化处理后竹束表面的自由基浓度降低,微波处理后的竹束表面自由基浓度增大;炭化、微波处理均能使竹束表面纤维素结晶度增大,但炭化处理结晶度增幅较大;炭化处理后竹束表面亲水性羟基减少,而微波处理后竹束亲水性羟基增加;预处理竹木重组材的 MOR 值较未处理材降低,MOE值变化幅度很小,炭化处理竹木重组材 IB 和 TS 值较未处理材下降,而微波处理竹木重组材 IB 和 TS 值上升。

英文摘要:

The physical and chemical property of bamboo strip treated by carbonization and microwave was re-searched by the analysis methods of contact angle/interfacial tension meter,ESR,XRD and FT-IR.The physical and mechanical properties of bamboo-wood hybrid scrimber prepared by pretreated bamboo strips was re-searched.The research results showed that the contact angle of bamboo strip surface treated by carbonization was higher than that with no pretreatment,while the contact angle of bamboo strip surface treated by micro-wave was lower than that with no pretreatment.The free radicals concentration of bamboo strip treated by car-bonization was decreased than that with no pretreatment,while the free radicals concentration of bamboo strip treated by microwave was increased.The relative crystallinity of cellulose in bamboo strip were both increased by carbonization and microwave pretreatment,the increasing extent of relative crystallinity treated by carboni-zation was larger than that treated by microwave.The number of hydroxyl in bamboo strip treated by carboniza-tion was decreased,while the number of hydroxyl in bamboo strip treated by microwave was increased.The MOR of bamboo-wood hybrid crimber was decreased by the two pretreatment,the change of MOE was not ob-viously,the IB and TS of bamboo-wood hybrid crimber pretreated by carbonization was decreased,while the IB and TS of bamboo-wood hybrid crimber pretreated by microwave was increased.

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期刊信息
  • 《功能材料》
  • 北大核心期刊(2011版)
  • 主管单位:重庆材料研究院
  • 主办单位:重庆材料研究院
  • 主编:黄伯云
  • 地址:重庆北碚区蔡家工业园嘉德大道8号
  • 邮编:400707
  • 邮箱:gnclwb@126.com
  • 电话:023-68264739
  • 国际标准刊号:ISSN:1001-9731
  • 国内统一刊号:ISSN:50-1099/TH
  • 邮发代号:78-6
  • 获奖情况:
  • 2008、2011年连续获中国精品科技期刊,2010获重庆市双十佳期刊
  • 国内外数据库收录:
  • 美国化学文摘(网络版),荷兰文摘与引文数据库,美国工程索引,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊(2004版),中国北大核心期刊(2008版),中国北大核心期刊(2011版),中国北大核心期刊(2014版),英国英国皇家化学学会文摘,中国北大核心期刊(2000版)
  • 被引量:30166