林产化学与工业2017，Vol.37Issue(5)：28-38,11.DOI:10.3969/j.issn.0253-2417.2017.05.004
PEG400复配ε-己内酯在樟子松饱水木材脱水定型中的应用研究
Research on Application of PEG400 with Epsilon-caprolactone in Waterlogged Planted Scotch Pine Wood for Dehydration and Reinforcement
摘要
Abstract
The 50% PEG400 aqueous and a hybrid solution of PEG 400 ( 50%) and ε-caprolactone (ε-CL ) ( 50%) were separately used to investigate the dehydration and reinforcement of waterlogged scotch pine wood simulating the archaeological waterlogged wood.The dehydration process included catalyst pre-treatment, impregnation under room temperature and 50 ℃hot dry aggregate .And the weight and dimensional changes of the different stages were analyzed , which was applied to evaluated the effects of process on the dimensional stability , weight gain percentage and reversibility of wood .And then the treated wood was characterized by FT-IR, TGA-DTA and SEM.The results showed that the PEG400 and the hybrid solution of PEG400 andε-CL both had good dehydration and reinforcement effect on waterlogged scotch pine wood with good reversibility .The weight gain percentage of the wood samples treated by the hybrid solution of PEG 400 and ε-CL increased obviously and the value of was 124.1%.After the dehydration and reinforcement , the shrinkages of tangential direction , radial direction and volume were 0.01%、0 and 0.01%,respectively, indicating of the dimensional stability .The ring opening polymerization (ROP) of CL was carried out inside the wood structures to form polycaprolactone ( PCL).The wood cell walls were coated and filled by PCL and PEG400, resulting in the increased thickness of the cell wall .However, the thermostability of wood filled with PLC and PEG 400 was turned to decrease .PLC would firstly degrade at 150 ℃to protect the cell wall of wood .关键词
PEG400/ε-己内酯(ε-CL)/开环聚合(ROP)/聚己内酯(PCL)/脱水定型Key words
PEG400/epsilon-caprolactone (ε-CL )/ring opening polymerization ( ROP )/poly (ε-carprolactone ) ( PCL )/dehydration and reinforcement分类
化学化工引用本文复制引用
李仁,张治国,兰新媛,蒲俊文..PEG400复配ε-己内酯在樟子松饱水木材脱水定型中的应用研究[J].林产化学与工业,2017,37(5):28-38,11.基金项目
国家文物局水下文化遗产保护中心财政课题(2017HXKFCLXY005) （2017HXKFCLXY005）
