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Preparation of high-molecular-weight poly(glycolic acid) by direct melt polycondensation from glycolic acid Kai Shen1,a, Shenglin Yang2,b aState Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai 201620,China bCollege of Material Science and Engineering, Donghua University, Shanghai 201620,China aKay217@163.com, bslyang@dhu.edu.cn Keywords: Poly(glycolic acid); Melt Polycondensation; Characterization Abstract.
The structure and properties of PGA were also characterized by means of intrinsic viscosity, FTIR, NMR and DSC testing. 2 Experimental 2.1 Materials Monomer was purchased from Xinmao Chemical Co.
Journal of Polymer Science: Part A: Polymer Chemistry11(2008). p.3802–3812
Journal of Polymer Science: Part A: Polymer Chemistry. 14(2008), p.4704–4711
Journal of Beijing Institute of Technology. 4(2001),p.518-523.

Experiment Preparation of the Nanocomposite Materials Preparation of Nano-SiO2 The right amount of anhydrous ethanol, distilled water and concentrated ammonia have been put in a clean beaker successively and be mixed uniformly.
References [1] Chen xiangbao, Handbook of polymer matrix composite materials, Chemical Industry Press, Beijing, 2004
[7] Lu Shaorong, Zhang Hailiang, Wang Xiayu, Preparation and properties of EP/SiO2 hybrid materials, Polymer Materials Science & Engineering, 2005, 21(5):261-265
[10] Tian Chao, Yang Li, Ma Hanbing, Properties of epoxy resin toughened by adding nano-SiO2, Journal of Southwest University of Science and Technology, 2012, 27(4):11-14
[12] Zhang Rongliang, Liu Yashu, Jin Yunxue, Preparation of EP/ZnO composites with needle nano-ZnO and its mechanical properties, Journal of Materials Engineering, 2011, 12(1):78-82.

Baishya, Image Force Effect on Tunneling Current for Ultra Thin High-K Dielectric Material Al2O3 Based MOS Devices, Journal of Nanoelectronics and Optoelectronics 10 (2015) 645-648
Baishya, Study of Interface Charge Densities for ZrO2 and HfO2 based Metal-Oxide-Semiconductor Devices, Advances in Material Science and Engineering 2014 (2014) Article ID 497274 1-6
Baishya, Interface Charge Density Measurement for Ultra Thin ZrO2 Material based MOS Devices Using Conductance Method, Procedia Computer Science, 5 (2015) 761-765
Baishya, Comparison of Different High-k Dielectric Materials in MOS Device from C-V Characteristics, Advanced Materials Research 816 (2013) 60-64
Baishya, Analysis of Flatband Voltage of MOS Devices Using High-k Dielectric Materials, Procedia Material Science 5 (2014) 1198-1204

Acknowledgement Thanks for the financial supports from the Fujian Provincial Nature Science Foundation(E0210011) and the Educational Commission of Fujian province(JA99123),China.
References [1] G..S.Fu, K.W.Qian, J.X.Kang: Materials Review(in Chin.)
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Research on the Key Technology and Application of the Process Monitor Configuration System Li Wei College of Information Science & Engineering,Chongqing Jiaotong University, Chongqing China lwcqcn@sina.com.cn Key words: configuration, monitor, wall material Abstract.
Introduction In the process industry of new wall materials, production equipments are full of some large capacity and strong continuity, a coordinated and timely monitoring is required to adjust some parameters’ disturbance, promote the stable, continuous production and optimize the production for achieving the best efficient and economic operation in this process.
Conclusion Most production enterprises of new wall materials are a kind of labor-intensive enterprises, in recent years labor costs is rising, this process monitor configuration system is helpful for improving the automation, intelligence and production efficiency of new wall materials equipments, reducing production investment costs and promoting the healthy development of new wall materials enterprises.
This article is specially sponsored by the state natural science fund(61004118).
Journal of System Simulation Vol.20 (2008), p.4159.

MWNT are expected to be further applied in hydrogen storage materials [5], nano- electronic devices [6], field hair display [7], composite materials [8] owing to their unique properties.
Materials Science and Engineering: A, 2002, 334(1): 173-178
Science, 2002, 298(5602): 2361-2366
Science, 2001,293(5527): 76-79
Advanced Materials, 2005, 17: 1239-1243 [10] Ni Mhuircheartaigh EMS, Giordani S, Blau WJ.

The material parameter of wheel/rail are shown in Table 1.
Journal of Southwest Jiaotong University, 2007, 3:262-268.
Journal of Southwest Jiaotong University, 2001, 36(6): 588- 590.
ASME Journal of Tribology, 1991, 113(3): 434-441
Liaoning: University of Science and Technology LiaoNing, 2012.

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Materials and Methods Plant Materials.
Science and Technology of Food Industry.
Journal of Food Sciences.
Chinese Journal of Foshan University(Natural Science Edition).
Chinese Journal of Jiangsu Agricultural Sciences, 2006, p.33-35.

The fulgide films can be applied as recording materials in ordinary holography and polarization holography, which were respectively based on the photochromic and photoinduced anisotropy properties.
At present, the most used recording materials for angle multiplexing are photopolymers [7], photorefractive crystals [2,5], and organic photochromic materials [8-12].
Photopolymers are Write-Ones-Read-Many (WORM) materials, not rewritable (RW).
Experimental Materials The fulgide material studied here is 3-indoly-benzylfulgimide, which was synthesized by the Stobbe condensation routine.
[11] R.A.Lessard, C.Lafond, G.Darderian, J.L.Gardette, A.Rivaton, M.Bolte: Fulgide-based WRE holographic materials: influence of the matrix on the fatigue process.