[1]吴华平,饶瑾,杨秀树,等. 甲基丙烯酸羟乙酯/甲基丙烯酸甲酯交联聚合物在木材中原位构建及对其尺寸稳定性影响[J].西北林学院学报,2018,33(4):193-197.[doi:10.3969/j.issn.1001-7461.2018.04.31]
　WU Hua-ping,RAO Jin,YANG Xiu-shu,et al. Dimensional Stability Improvement of Wood Via in situ Construction of Polyhydroxyethyl Methylacrylate and Polymethyl Methylacrylate Networks[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2018,33(4):193-197.[doi:10.3969/j.issn.1001-7461.2018.04.31]
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 甲基丙烯酸羟乙酯/甲基丙烯酸甲酯交联聚合物在木材中原位构建及对其尺寸稳定性影响()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第33卷
期数:
2018年第4期
页码:
193-197
栏目:
出版日期:
2018-07-31

文章信息/Info

Title:
 Dimensional Stability Improvement of Wood Via in situ Construction of Polyhydroxyethyl Methylacrylate and Polymethyl Methylacrylate Networks
文章编号:
1001-7461(2018)04-0193-05
作者:
 吴华平; 饶瑾; 杨秀树; 刘庭菘; 孙芳利*
 （浙江农林大学 工程学院，浙江 临安 311300）
Author(s):
 WU Hua-ping; RAO Jin; YANG Xiu-shu; LIU Ting-song; SUN Fang-li*
 (School of Engineering,Zhejiang Agriculture & Forestry University,Lin’an,Zhejiang 311300,China)
关键词:
 ; 交联聚合物; 木材; 尺寸稳定性
Keywords:
 ; polymer network;  wood;  dimensional stability
分类号:
S781.7
DOI:
10.3969/j.issn.1001-7461.2018.04.31
文献标志码:
A
摘要:
 以甲基丙烯酸羟乙酯（HEMA）和甲基丙烯酸甲酯（MMA）2种单体为原料，在过硫酸铵(APS)和偶氮二异丁腈(AIBN)的引发下，通过N-N-亚甲基双丙烯酰胺(N,N-MBA)的交联作用，在木材中原位构建交联聚合物网络体系，改善其因干缩湿胀引起的变形和开裂，提高尺寸稳定性。通过扫描电镜发现，HEMA和MMA经聚合和交联反应后构建贯穿木材细胞腔和细胞壁的网络结构，形成的P(HEMA/MMA)交联聚合物附着在木材薄壁组织并堵塞细胞壁纹孔。木材经3次吸湿-干燥和吸水-干燥循环试验，结果表明，在第1次吸湿-干燥循环中的膨胀率和抗胀率分别为1.6％和65.3％；在吸水-干燥循环试验中，吸水膨胀率和抗胀率分别为8.5％和37.0％。经P(HEMA/MMA)改性处理的木材能够在一定程度上提高木材的尺寸稳定性。
Abstract:
 In this study,the chemical modification of wood was explored based on in situ construction of polyhydroxyethyl methylacrylate and polymethyl methylacrylate networks (P(HEMA/MMA)) to improve the property of dimensional stability.Initiated by ammonium persulfate (APS) and azobisisobutyronitrile (AIBN),monomers of HEMA and MMA were used to construct a crosspolymer network through cross-linking of N,N′-methylenebisacrylamide (N,N′-MBA).SEM revealed that P(HEMA/MMA) went through cell cavities and cell walls,which attached to wood parenchyma and blocks pits on cell wall.The dimensional stability was tested under three water soaking or moistening and drying cycles.The results showed that swelling ratio and anti-swelling ratio reached 1.6% and 65.3% in the first moisture absorption cycle,respectively,and 8.5% and 37.0% of the first cycle water aborsation,respectively,which indicated that the treatment of P(HEMA/MMA) improved dimensional stability of wood to some extent.

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备注/Memo

备注/Memo:
 收稿日期：2017-09-11修回日期：2017-12-04
基金项目：国家自然科学基金(31470587)；浙江省重点自然科学基金(Z14C160009)。
作者简介：吴华平，女，在读硕士，研究方向：木质材料改良。E-mail:15068171509@163.com
*通信作者：孙芳利，女，教授，博士，研究方向：木质材料改良。E-mail:sun_fangli@163.com
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