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Effect Dehydrants to Increasing Molecular Weight of Condensed Polylactic Acid YinMengyan1, a, YangRongjie2, b and LiDinghua3, c 1 No.5 Yard, Zhong Guan Cun South Street, Haidian District, Beijing, China 2 National engineering technology research center for flame retardant material, School of Materials, Beijing Institute of Technology, Haidian District, Beijing, China 3 National engineering technology research center for flame retardant material, School of Materials, Beijing Institute of Technology, Haidian District, Beijing, China aomumuxi@163.com, byrj@bit.edu.com, cdli@bit.edu.com Keywords: polylactic acid, direct melt polycondensation, dehydrant, magnesium, magnesium methoxide Abstract.
Experiment Materials.
New chemical materials, Vol 37 No 5(2009), p. 1 [2] Jiang JiaJing (2012): Study on Synthesis of poly (lactic acid).
Jiangsu University of Science and Technology, Jiangsu
CHINESE JOURNAL OF APPLIED CHEMISTRY, Vol. 11 No. 1

It is inferred from the optical signal that the first peak in the current curve results from the plasma generation of the bridge material.
The typical behavior of two peaks in the voltage-time curve was observed, the first peak caused by the melting of the bridge, and the second peak results from plasma generation of the bridge material [3-5].
Fig. 14 Characteristic curves of Fig.15 The microscopic photographs of SR-SCB bridge LV-SCB (I= 3.85A) region 3.2 Analysis of electro-exploding performance parameters The SCB ignites energetic materials based on plasma form in practical applications, so in this article we set the input current under which the optical signal overturns the first time as the critical electro-exploding current (Ic).
Journal of applied physics, 62(1987) 1622-1632
Journal of Vacuum Science & Technology B, 6(1997) 1946-1948

In this study, the real values of Young’s module (E) and Poisson’s ratio (ν) of materials were used to quantitatively calculate.
The initial θ0 of materials of welding seam, heat-affected zone and base metal (16MnDR) with zero-stress were detected to analyze influence of quantitative calculation.
In the study described here, the real Young’s module (E) and Poisson’s ratio (ν) of materials were used to quantitatively calculate.
Materials respectively cut from welding seam, heat affected zone and base metal were treated in furnace for stress relief annealing.
Besides, in order to test the WRS of spherical tank, more materials should be studied to analyze the influence for quantitative analysis.

Material and Method.
Method and Material.
For the same cell lines, and under the same conditions, it was found that the high cytotoxicity of nano-C60 was not a universal property of C60 materials.
Since our investigation is related to the new materials for cosmetic and medical applications, their effect on very sensitive tissue, like eye tissue, should be tested.
Ignjatović, In vitro and in vivo investigation of collagen - C60(OH)24 interaction, Materials Science Forum. 453-454 (2004) 557-563

Compared with collagen, a natural protein with RGD sequence, ASF is expected to have vast application in biomedical materials due to its low price, easy purification, and good mechanical properties.
Materials and Methods Preparation of regenerated ASF solution.
So it provided a great potential as a biological material.
Kaplan, Science, 329 (2010) 528-531
Qin, Journal of Insect Science, 10 (2010) 1-6

So along the river the shallow groundwater recharge the river. 2 Materials and Methods 24 groundwater samples were collected from different aquifers in June 2012 to determine the hydrogen and oxygen stable isotopes and carry out the water quality analysis.
When the organic materials and desulfurization microbial are coexist [20], the anaerobic degradation will be carry out: SO42-+2C+2H2O→H2S+2 HCO3-.
[5] Duan Yi, Wu Yingzhong, Zhao Yang, Cao Xixi, Carbon and Hydrogen Isotopic Compositional Features of Hydrocarbon Gases Generated by Different Coal-forming Materials, NATURAL GAS GEOSCIENCE.26(2015)2365-2371
[6] Duan Yi, Duan Mingchen, Wu Yingzhong, Yao Jingli, Luo Anxiang, Deng Xiuqin, Qi Yalin, Impact of Formation Environment of Coal-Forming Material on Hydrogen and Carbon Isotopic Compositions of Thermogenic Coalbed Gas: Thermal Simulation of Herbaceous Marsh Peats Formed under Different Climatic Environments, Earth Science.42(2017)1541-1548
[12] Zhao Fenghua, Cheng Chen, Fan Lijun, Guo Hong, Gu Shaoshun, Comparison of measuring methods of niteogen isotope composition in coals, Journal of Mining Science and Technology. 3(2018) 99-105

Introduction In recent years, nanostructural materials such as nanorods, nanowires or nanofibers have been actively studied due to both of their scientific interests and potential applications in nano devices.
Variety of methods suggested for the preparation of such materials, including deposition methods, ball milling technique, self- assembled mono layers and sol-gel process. [1-2] The production of zinc borate from boric acid and zinc oxide was studied using different approaches [3–4] in the literature.
Electrospinning is a simple and inexpensive method for generating ultrafine fibers of various types of materials including polymer, polymer/ ceramic composites and ceramic fibers.
Materials and Methods Nanofiber production was carried out in three stages.
Çolak, Electrospinning and characterization of alumina borosilicate ceramic nanofíbres, Materials Science-Poland, Vol. 25, No. 4. 2007 [13] K.

MoSe2 possess interesting optical and photo-absorption properties [1-5].These semiconducting materials belong to TMDCs group and are found to possess layered structure.
In recent years, intrinsic conducting polymers with conjugated double bonds have been attracted much attention as advanced materials.
[5] S.Y.Hu, C.H.Liang, K.K.Tiong andY.S.Huang,Journal of Alloys and Compounds, 442 (2007)249
Brabec, Advanced Materials, 18(6), (2006) 789
Patila * a Materials Research Laboratory, School of Physical Sciences, Solapur University, Solapur, India; b Crystal Technology Section Soft Nanoscience Letters, 2011, 1, 6-10 [17] E.

The agreement between the computing and experimental results shows the model developed in the paper can be effectively used to study the friction behaviors of the sweat self-lubricating composite at high temperature. 1 Introduction With the development of modern science and technology, more and more machinery parts operate in extreme hot environments, which promote the studies of high temperature self-lubricating materials.
Because the lubricant of the composite is in the molten state during sliding at high temperature, the entire load is carried by the matrix material.
Acknowledgement The authors would like to thank National Natural Science Foundation of PR China for the financial support (ID 50775168).
Journal of wuhan university of technology. (2006), 28(6): 20-23
(Shanghai Science and Technology Press, Shanghai China 1984).

Effects of Ca on Microstructure and Mechanical Properties of Mg-5.5Al-1.2Y Alloy Wenjian Liua, Quan-an Li, Zhi Chen, Xiaojie Song School of Materials Science and Engineering, Henan University of Science & Technology, Luoyang 471003, China aliuwenjian1986@126.com Key words: Ca, Mg-5.5Al-1.2Y alloy, Microstructure, Mechanical properties Abstract: The microstructure and mechanical properties of aged Mg-5.5Al-1.2Y magnesium alloy with Ca addition are investigated.
Before the experiment starts, all the materials should be dried at 200℃.
Materials Science Forum, Vol 419-422(2003), p. 57-66 [2] S.J Guo, Q.Z Yue, J.Z Cui.
Materials Review, Vol 18(2004), p. 44-46 (in Chinese) [3] W.Q Yun, T.J Zhan, D.J, et al.
Chinese Journal of Nonferrus Metals, Vol 14(2004), p. 1443-1450 (in Chinese) [5] X.Q Wang，Q.A Li，X.Y Zhang.