摘要：
As the most planting tree species in South China, Eucalyptus camaldulensis wood has been main fiber materials for preparing degradable composite materials. However, wood extractives and hemicellulose were nearly complete dissolved out in preparation of the fiber, resulting in more serious water pollution and meanwhile bring a great waste of biological resources. Thereby, in order to find out the leaching rule of micro/nano particles from Eucalyptus camaldulensis wood, Eucalyptus camaldulensis wood was treated in alkaline solutions at room temperature and the extractives obtained was analyzed by Sizer. The results were following as: (1) Different alkali, its concentration and extraction time have a significant different influence on the particles leaching with the different diameters. And the KOH, NaOH, LiOH all had impacts on the volume fraction and number fraction of leached particles and the significance reduced in turn at the same other conditions. (2) The optimum concentration of KOH, NaOH and LiOH was 17.5%, 18.5% and 15.0% at room temperature, respectively. The optimum extraction time of the untreated samples was 20 h, 24 h and 24 h, respectively. The optimum extraction time of the pretreated samples was 16 h, 16 h and 12 h, respectively.
期刊：
Applied Mechanics and Materials,2012年166-169:1426-1428 ISSN：1660-9336
通讯作者：
Peng Wanxi
作者机构：
[Peng Wanxi] Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.;[Qin Daochun] Int Ctr Baboo & Rattan, Beijing 100102, Peoples R China.
通讯机构：
[Peng Wanxi] C;Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.
会议名称：
2nd International Conference on Civil Engineering, Architecture and Building Materials (CEABM 2012)
会议时间：
MAY 25-27, 2012
会议地点：
Yantai, PEOPLES R CHINA
会议主办单位：
[Peng Wanxi] Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.^[Qin Daochun] Int Ctr Baboo & Rattan, Beijing 100102, Peoples R China.
会议论文集名称：
Applied Mechanics and Materials
关键词：
Building bamboo;Inhibition effect;Leaves extractives;Termite prevention;Wood extractives
摘要：
Bamboo is widely used in building construction in south China. However, Termites are the natural enemies of bamboo building. Therefore, the inhibition effect of extractives on building bamboo's termite prevention was studied. The results shown that the benzene / ethanol extractives of camphor tree roots, camphor leaves,Cedrus deodara leaves needles, and torch pine leaves had the better toxic effect to termites among the 15 extractives.
摘要：
In order to explore the application prospects of wood extractives in the biomass energy, the several wood extractives were isolated by organic solvent. The results of functional analysis suggested that these wood extractives could accelerate benzene-alcohol's burning, but played a certain role in inhibiting ether's burning. This reslut revealed that the wood extractives had huge potential applications in the field of add-on bioenergy.
作者机构：
[Peng Wan-xi; Wu Feng-juan] Cent S Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha, Hunan, Peoples R China.;[Qin Dao-chun; Lu Fang] Int Ctr Bamboo & Rattan, Beijing, Peoples R China.
通讯机构：
[Peng Wan-xi] C;Cent S Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha, Hunan, Peoples R China.
会议名称：
6th International Conference on Physical and Numerical Simulation of Materials Processing (ICPNS)
会议时间：
NOV 16-19, 2010
会议地点：
Guilin Univ Elect Technol, Guilin, PEOPLES R CHINA
会议主办单位：
Guilin Univ Elect Technol
会议论文集名称：
Materials Science Forum
关键词：
tree leaves;bamboo biomass;benzene/alcohol extractives
摘要：
Bamboo is so easy to get mildewed that bamboo products are still low value added. Therefore, the effect of red extractives from 28 tree leaves on bamboo biology mildewing was studied basing on full-factor test. The result was as follows: (1) most red extractives of tree leaves can inhibit the growth of P. expansum, but a few can inhibit the growth of A. alternate; (2) The red extractives from tree leaves of Deodar cedar, Eucalyptus grandis, Eucalyptus dunnii and pear were the most effective to control spore germination of P. expansum, and those of Manglietia glauca, Osmanthus fragrans, and Melia toosendanin were the most effective to control spore germination of A. alternata; (3) The effect of the red extractives from Pinus taeda, Eucalyptus grandis and Santalum album on bamboo biomass mildewing was highly remarkable on mildew-proof by outdoor test. Our result pointed out the direction for the development of the biological mildew inhibitor from tree leaves. Key words. tree leaves, bamboo biomass, benzene/alcohol extractives
摘要：
With the development of plantation forestry, poplar tree has become one of the most useful plantion species for the composite biomaterials in China. Therefore, the thermal release behavior of poplar composite biomaterial under high temperature was studied by TD-GC/MS in order to reveal environmental protective performance. The results were: (1) The main constituents of thermal release volatiles at 90 degrees C were acetic acid (81.45%), furfural (2.66%), cedrol (1.7%), formic acid (1.67%), benzenemethanamine, N-hydroxy-N-(p henylmethyl)-(1.42%), 2-propanone, 1-hydroxy-(0.88%), 1,2-benzenedicarboxylic acid, mono(2-ethylhexyl) ester (0.66%), etc. (2) The main constituents of thermal release volatiles at 150 degrees C were acetic acid (68.55%), furfural (7.26%), formic acid (7.22%), 2-propanone, 1-hydroxy-(2.22%), thiourea (1.96%), 2-furancarboxaldehyde, 5-methyl-(1.82%), propane, 2-ethoxy-(1.37%), 2-furanmethanol (1.32%), 2-pentanone (0.72%), 1H-pyrrole-2-carboxaldehyde (0.72%), etc. The result revealed that the poplar composite biomaterial is safe under high temperature, but its fire risk rised up.
摘要：
In order to evaluate its thermal aging properties, the volatile organic compounds of engineering smoked bamboo were adsorbed and determined by TD-GC-MS. The result were: (1) The main constituents of volatiles at 160°С were acetic acid(42.20%), benzofuran, 2,3-dihydro- (7.32%), 1,3-benzodioxole, 5-(2-propenyl)-(5.72%), etc. (2) The main constituents of volatiles at 180°С were acetic acid(41.69%), benzofuran, 2,3-dihydro- (7.32%), 3(5)-[[1,2-dihydroxy-3-propoxy]met hyl]-4-hydroxy- 1h-pyrazole-5(3)-ca rboxamide (6.75%), 1-phenanthrenecarboxaldehyde, 7-ethenyl- 1,2,3,4,4a,4b,5,6,7,9,10,10a- dodecahydro- 1,4a,7 - trimethyl- (3.46%),etc. So the engineering smoked bamboo was safe under 160-180°С.
作者机构：
[Zhang Zhong-feng; Peng Wan-xi; Zhang Xu; Wu Feng-juan; Xue Qiu] Cent S Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha, Hunan, Peoples R China.
通讯机构：
[Peng Wan-xi] C;Cent S Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha, Hunan, Peoples R China.
会议名称：
International Conference on Materials, Mechatronics and Automation (ICMMA 2011)
会议时间：
JAN 15-16, 2011
会议地点：
Melbourne, AUSTRALIA
会议主办单位：
[Peng Wan-xi;Xue Qiu;Wu Feng-juan;Zhang Xu;Zhang Zhong-feng] Cent S Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha, Hunan, Peoples R China.
会议论文集名称：
Key Engineering Materials
关键词：
Health risk;Smoked bamboo;Volatile organic compounds;Biomaterial;TD-GC-MS
摘要：
Smoked bamboo, which was made by bamboo in high temperature smoke, is a new indoors materials. In order to evaluate its potential health risk to human settlements, the volatile organic compounds of smoked bamboo biomaterial were adsorbed and determined by TD-GC-MS. And the main constituents of volatiles at 60°С were cyclononasiloxane, octadecamethyl-(35.14%), acetic acid(23.27%), cyclotrisiloxane, hexamethyl- (9.53%), bicyclo[4.4.0]dec-1-ene,2-isoprop yl-5-methyl-9-methylene-(7.56%), silane, 1,4-phenylenebis[trimethyl(4.32%), 1,3-benzodioxole, 5-(2-propenyl)- (3.47%), cedrol(2.75%), etc. (2) The main constituents of volatiles at 130°С were acetic acid(43.78%), 2,5-furandione, dihydro-3- methylene-(16.57%), 1,3-benzodioxole, 5-(1-propenyl)-,(z)-(6.75%), octasiloxane, 1,1,3,3,5,5,7,7,9,9, 11,11,13, 13,15,15- hexadecamethyl -(4.09%), bicyclo[2.2.1]heptan-2-one, 1,7,7- trimethyl-, (1s)- (3.21%), etc. Generally, the smoked bamboo biomaterial was safe under 60-130°С.
作者机构：
[Li, Jinghao; Zhou, Xianyan] Cent South Univ Forestry & Technol, Coll Civil Engn & Mech, Changsha 410004, Hunan, Peoples R China.;[Zhang, Zhongfeng] Cent South Univ Forestry & Technol, Coll Furniture & Art Design, Changsha 410004, Hunan, Peoples R China.;[Peng, Wanxi] Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.
通讯机构：
[Zhou, Xianyan] C;Cent South Univ Forestry & Technol, Coll Civil Engn & Mech, Changsha 410004, Hunan, Peoples R China.
会议名称：
International Conference on Structures and Building Materials
会议时间：
JAN 07-09, 2011
会议地点：
Guangzhou, PEOPLES R CHINA
会议主办单位：
[Zhou, Xianyan;Li, Jinghao] Cent South Univ Forestry & Technol, Coll Civil Engn & Mech, Changsha 410004, Hunan, Peoples R China.^[Zhang, Zhongfeng] Cent South Univ Forestry & Technol, Coll Furniture & Art Design, Changsha 410004, Hunan, Peoples R China.^[Peng, Wanxi] Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.
会议论文集名称：
Advanced Materials Research
关键词：
Bonding capacity;Experiments;Preferred tree species;Structural lumber
摘要：
This thesis aims to select the optimal assemble patterns of wood species for structural lumber for wood-based bridge by analysing the bonding strength of eucalyptus veneers, poplar veneers and bamboo mats. Through variance analysis, the experiment results showed that: the compound mode: bamboo mat was used as the core panel, eucalyptus veneers as the surface panel, and the bonding strength is above the national standard. What draws special attention was that thickness of eucalyptus veneers was above 1.3 mm to crack.
作者机构：
[Peng, Wanxi; Xu, Qiu; Wang, Lansheng; Wu, Fengjuan] Cent S Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.
通讯机构：
[Peng, Wanxi] C;Cent S Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.
摘要：
In the title compound, C 16H 12BrNO 3, the butyrolactone core adopts the furan-2(5H)-one structure and forms dihedral angles of 44.80 (17) and 65.73 (18)° with the bromobenzene and phenol rings, respectively. In the crystal, N - H⋯O and O - H⋯O hydrogen bonds link the molecules, generating R 4 3(26) loops The edgefused rings extend to form a chain running along the baxis direction and C - H⋯π contacts help to consolidate the packing.
作者机构：
[Zhang Zhong-feng; Peng Wan-xi; Zhang Xu; Wu Feng-juan; Xue Qiu] Cent S Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha, Hunan, Peoples R China.
通讯机构：
[Peng Wan-xi] C;Cent S Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha, Hunan, Peoples R China.
会议名称：
International Conference on Environmental Biotechnology and Materials Engineering
会议时间：
MAR 26-28, 2011
会议地点：
Harbin Univ Commerce, Harbin, PEOPLES R CHINA
会议主办单位：
Harbin Univ Commerce
会议论文集名称：
Advanced Materials Research
关键词：
Building materials;Environmental characteristics;Smoked bamboo;TD-GC-MS
摘要：
The main constituents at 230°С were propanoic acid, 2-(aminooxy)-(16.99%) , propanamide, 2-hydroxy-n-methyl-(14.20%) , benzaldehyde, 2-methyl-(13.22%) , furfural(9.44%) , butanal, 2-methyl-(8.09%) , acetic acid(7.09%) , hydrazine, methyl-(4.14%) , etc. And the main constituents at 280°С were hydrazine, ethyl-(24.87%) , 2(3h)-furanone, dihydro-4-hydroxy-(15.24%) , phenol, 2,6-dimethoxy-(11.82%) , benzaldehyde, 2-methyl-(11.49%) , furfural(4.90%) , etc. The heat release volatiles of smoked bamboo biomass might be used as raw materials of rare biomedicines. So the smoked bamboo biomass for building materials had environmental friendly characteristics.
摘要：
The benzene/ethanol extractives of Eucalyptus camaldulensis biomass were identified by Py-GC/MS to find out biomedical application. The main 350°? pyrolysis components were 1-phenanthrenecarboxylic acid, 1,2,3,4,4a,9,10,10a- octahydro-1,4a-dimethyl-7-(1-methylethyl)-(21.22%), .beta.-sitosterol acetate (6.4%), stigmasterol, 22,23-dihydro-(5.87%), ergosta-4,6,22-trien-3.beta.-ol(3. 6%), etc. The main 350°? pyrolysis components were 1-phenanthrenecarboxylic acid, 1,2,3,4,4a,9,10,10a-octahydro-1,4a-dimethyl-7-(1-methylethyl)-(23.58%), ergosta-4,6,22-trien- 3.alpha.-ol(6.27%), decanoic acid, 1,2,3-propanetriyl ester(6.1%), 4.alpha.-methylcholest-7-en- 3-one(3.92%), stigmasterol, 22,23-dihydro-(3.57%), stigmastan-3,5-diene(2.61%), etc. And the main 750°? pyrolysis components were 1-phenanthrenecarboxylic acid, 1,2,3,4,4a,9,10,10a- octahydro-1,4a-dimethyl-7-(1-methylethyl)- (28.83%), .beta.-sitosterol acetate (5.58%), cholest-8(14)-ene-3,15-dione(4.33%), 1,3-butadiene,2-methyl-(3.42%), etc. So the benzene/ethanol extractives of Eucalyptus camaldulensis could be used as biomedicine.
