作者机构：
[左迎峰; 吴义强; 佘佳荣; 郭鑫; 江萍] College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha;410004, China;[顾继友] Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education, Northeast Forestry University, Harbin;150040, China;[左迎峰; 吴义强; 佘佳荣; 郭鑫; 江萍] 410004, China
通讯机构：
[Wu, Y.] C;College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, China
作者机构：
[Xiong Feng; Luo Yong-Feng; Liao Chun-Rong] Cent South Univ Forestry & Technol, Coll Sci, Changsha 410018, Peoples R China.;[Xiong Feng; Luo Yong-Feng; Liao Chun-Rong] Fudan Univ, Lab Adv Mat, State Key Lab Mol Engn Polymers, Shanghai 200438, Peoples R China.;[Li Xian-Jun; Wu Yi-Qiang] Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha 410018, Peoples R China.
通讯机构：
[Luo Yong-Feng] C;[Luo Yong-Feng] F;Cent South Univ Forestry & Technol, Coll Sci, Changsha 410018, Peoples R China.;Fudan Univ, Lab Adv Mat, State Key Lab Mol Engn Polymers, Shanghai 200438, Peoples R China.
关键词：
Conductive polymer;Fiber;Supercapacitor;Solar cell;Fibrous energy device
摘要：
Conductive polymers implemented in fibrous energy devices have drawn considerable attention because of their economic importance, good environmental stability, and electrical conductivity. Conductive polymers demonstrate interesting mechanical, electronic, and optical properties, controllable chemical and electrochemical behavior, and facile processability. This review elaborates on the latest research in conductive polymers in fibrous energy devices, such as fibrous supercapacitors, fibrous solar cells, and fibrous integrated energy devices. The performance requirements of these fibrous energy devices, with specific reference to related materials, fabrication techniques, fiber structure, and electronic transport as well as mechanical functionality, are also reviewed in this paper.
摘要：
The application of superhydrophobic wood is majorly limited by its durability when subjected to natural conditions. Herein, the stability of two representative superhydrophobic woods (i.e., Poplar (Populus tomentosa) and Chinese fir (Cunninghamia lanceolata)), were prepared via a one-step hydrothermal process using tetrabutyltitanate (Ti(OC4H9)(4), TBOT) and vinyltriethoxysilane (CH2CHSi(OC2H5)(3), VTES) as a co-precursor and sequentially tested under different humidity and temperature conditions. The variables including morphology, water contact angle (WCA), color parameter, chemical components of the surface, and moisture absorption property were characterized using a scanning electron microscope (SEM), WCA measurement, a colorimeter, a Fourier transform infrared (FTIR) spectroscopy, and a moisture absorption test, respectively. It was found that initial static WCAs of superhydrophobic wood were larger than 150 degrees. Micron-sized cracks were formed on the coatings after the alternating humidity and temperature aging cycles. This lowered the water repellency, but the WCA was still greater than 140 degrees. There was nearly no chemical change of wood after the aging test; the color change between the same species of untreated and superhydrophobic wood was very small, only with a difference of 0.42 and 4.05 in overall color change DE/values for Chinese fir and poplar, respectively. The superhydrophobic coatings had a trivial influence on wood moisture absorption property, which only lowered 3% in poplar and 2% in Chinese fir, respectively. (C) 2017 Published by Elsevier B. V. This is an open access article under the CC BY-NC-ND license
作者机构：
[Qin Y.; 彭辉艳; 邓凌峰; 吴义强] School of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China
通讯机构：
[Deng, L.] S;School of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, China
摘要：
For lignocellulosic materials, water adsorption is extremely important for its product performance. For gaining a deeper understanding of moisture adsorption mechanisms, the molecular interactions between adsorbed water and a typical lignocellulosic material (i.e., wood) were studied using in-situ microscopic Fourier transform infrared (micro-FTIR) spectroscopy and a specially designed sample cell. The spectral shifts of 1733 cm(-1), 1604cm(-1) and 1236 cm(-1) and different spectra between the moist and dry spectra indicated that carbonyl C=O and C-O groups preferred to combine with water molecules to form hydrogen bonds. From component band analysis of the spectral range of 2900-3700 cm(-1), three peaks at 3178 cm(-1), 3514cm(-1) and 3602 cm(-1) were identified and assigned to strongly, moderately and weakly hydrogen-bonded water molecules, respectively. According to the variation trend of these hydrogen-bonded water molecules, three sections were divided for the adsorption process. Furthermore, the molecular structure of water absorbed by hydrophilic groups of wood in each section was demonstrated. (C) 2015 Elsevier B.V. All rights reserved.
作者机构：
[Luo, Yan; Liu, Xiaomei; Wan, Hui; Shmulsky, Rubin] Mississippi State Univ, Dept Sustainable Bioprod, Mississippi State, MS 39762 USA.;[Wu, Yiqiang] Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.;[Wang, Xiaodong (Alice)] Lulea Univ Technol, Wood Prod Engn, Forskargatan 1, SE-93187 Skelleftea, Sweden.;[Chu, I. Wei] Mississippi State Univ, Inst Imaging & Analyt Technol, Mississippi State, MS 39762 USA.
通讯机构：
[Wan, Hui] M;Mississippi State Univ, Dept Sustainable Bioprod, Mississippi State, MS 39762 USA.
关键词：
Isocyanate resin;Molecular weights;Morphology and structure;Phenolic resins
摘要：
Co-polymer systems of methylene diphenyl diisocyanate (MDI) and phenol-formaldehyde (PF) resins with different molecular weights were characterized by infrared spectroscopy (FTIR), X-ray diffraction (XRD), and thermogravimetric analysis (TGA). The FTIR and TGA coupled with differential thermogravimetric (DTG) results showed that higher molecular weight of PF resins not only promoted the reaction of isocyanate and PF co-polymer system, but also resulted in a better thermal property of prepared co-polymers. The XRD results revealed that higher molecular weight led to a higher proportion of ordered or crosslinking structures in the hybrid resin system. The relationship between the thermal resistance, mechanical properties and the molecular weights of phenolic resins needs further study.
作者机构：
[左迎峰; 赵星; 吴义强] College of Material Science & Engineering, Central South University of Forestry & Technology, Changsha;410004, China;[张彦华; 顾继友] College of Material Science & Engineering, Northeast Forestry University, Harbin;150040, China;[左迎峰; 赵星; 吴义强] 410004, China
通讯机构：
[Wu, Y.] C;College of Material Science & Engineering, Central South University of Forestry & Technology, Changsha, China
作者机构：
[Li, Xingong; Li, Yun; Wu, Yiqiang; He, Xia; Cheng, Xiyi; Li, Xianjun] Cent South Univ Forestry & Technol, Mat Sci & Engn Coll, Changsha 410004, Hunan, Peoples R China.;[Liu, Dandan] Nanjing Forestry Univ, Coll Furniture & Ind Design, Nanjing 210037, Jiangsu, Peoples R China.;[Huang, Qiongtao] Yihua Enterprise Grp Co Ltd, Yihua Timber Ind, Shantou 515834, Guangdong, Peoples R China.
通讯机构：
[Li, Xianjun] C;Cent South Univ Forestry & Technol, Mat Sci & Engn Coll, Changsha 410004, Hunan, Peoples R China.
关键词：
Dimensional stability;Energy storage and saving;Polyethylene glycol (PEG);Thermal properties;Wood
摘要：
Green fir wood (Pseudotsuga menziesii) was modified with polyethylene glycol (PEG) to produce wood composites for energy storage and conversion. The PEG-modified wood composites were evaluated based on their dimensional stability, durability, and thermal properties by various analytical methods. The differential scanning calorimetry (DSC) results showed the melting temperature and the latent heat of the phase change material (PCM) composite were 26.74 °C and 73.59 J/g, respectively. Thermal cycling tests and thermogravimetric analysis confirmed the composite exhibited good thermal stability, reliability, and chemical stability. All treated specimens were free from noticeable defects, and the addition of a surface varnish coating prevented PEG from leaching. The PEG-modified composites exhibited improved dimensional and thermal performance, which makes this material a potential candidate for economical and green, lightweight building materials.
作者机构：
[李贤军; 夏燎原; 吴义强] College of Material Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China;[胡云楚] College of Science, Central South University of Forestry and Technology, Changsha, 410004, China;[黄琼涛] Guangdong Yihua Timber Industry Corporation Limited, Shantou, 515834, China
通讯机构：
[Li, X.] C;College of Material Science and Engineering, Central South University of Forestry and Technology, Changsha, China
