Studies on Grafting Modification of Collagen and Application to Preparation of Low IR Emissivity Coating

Abstract

Abstract: More and more requirements are put forward to infrared stealth coating with the development of detection technology, therefore, the key point in the infrared stealth coating research is how to achieve the lowest infrared emissivity under the circumstance of being compatible of visible light and radar stealth. Indium oxide powder, which is commonly used for the sake of visible light stealth as a coloring pigment in the preparation of coating, has a high emissivity and cannot lower the emissivity of coating consequently. Collagen, a biomacromolecule material, is a triple helix composed of three polypeptide chains. Owing to a great number of dipoles and molecule-bound charges in collagen molecules, actually collagen is a bioelectret and has the properties of polarization, electrostatics and so on. Additionally, collagen molecule abounds in elements such as oxygen and nitrogen, which shows a good affinity to metal oxide, so collagen can be used to modify and stabilize metal oxide powder. But the native collagen adsorbs water easily so that it cant be directly put into application. In this paper, grafting copolymerization of collagen with methyl methacrylate(MMA) initiated by ammonium cerium nitrate(CAN) and 2,2-azo-bis-iso-butyronitrile(AIBN) was carried out in an aqueous medium. The coating was prepared by the composites of collagen-g-MMA copolymer and indium oxide nanoparticles. The effect of the grafting temperature and the extractive solvent on the copolymer and the IR emissivity of the coating of the composites thereof was studied, and at the same time, the mechanism for the decrease in the IR emissivity of the coating was discussed by contrasting the microstructures of the collagen/indium oxide and copolymer/indium oxide composites. The results showed that the collagen-g-MMA copolymer with a grain size of 40—80 nm could be prepared at 50—55 ℃ with acetone and distilled water as the extractive solvents. The coating prepared by t

Key words: Collagen, Grafting modification, IR emissivity, Nanoparticle

CLC Number:

TrendMD:

ZHOU Yu-Ming, SHAN Yun, CAO Yong, XU Qun-Hua, JU Huang-Xian, WU Zong-Han . Studies on Grafting Modification of Collagen and Application to Preparation of Low IR Emissivity Coating[J]. Chem. J. Chinese Universities, 2004, 25(5): 966.

References

[1] FEI Yi-Wei(费逸伟),HUANG Zhi-Jie(黄之杰),TANG Wei-Hong(唐卫红)et al..Materials Science&Engineering(材料科学与工程)[J],2002,20(3):449—453 [2] Kleisner R.J.,Koeck B.H.,Ph illip sM.R.et al..Th in So lid Film s[J],2001,381:10—14 [3] Aronoff Y.G.,Chen B.,Lu G.et al..J.Am.Chem.Soc.[J],1997,119:259—262 [4] Bernasek S.L.,Schw artz J..Langm uir[J],1998,14:1 367—1 370 [5] LI Quan(李　泉),ZENG Guang-Fu(曾广赋),XI Shi-Quan(席时权).Chemistry(化学通报)[J],1995,6:29—34 [6] Guido Kickelbick.Prog.Po lym.Sci[J],2003,28:83—114 [7] Lebeau Benedicate,Sanchez Clem en t.Curren t Op in ion in So lid State&Materials Science[J],1999,4(1):11—23 [8] Sessler G.M..Electrets[M],Berlin Herdelberg,New Yo rk:Sp ringer-Verlag,1980:330—332 [9] N ING Gui-Ling(宁桂玲),CHANG Yu-Fen(常玉芬),LIU Yan-Lai(刘延来)et al..Chem.J.Ch inese Universities(高等学校化学学报)[J],2002,23(3):345—348 [10] Boal A.K.,Llhan F.,De Rouchey J.E.et al..Nature[J],2000,404:746—748 [11] Conno lly S.,Rao N.,Rizza R.et al..Coo rdination Chem istry Review s[J],1999,1852186:277—295 [12] Sh in ri Sato.J.Pho tochem istry and Pho tobio logy,A:Chem istry[J],1998,45:361—367 [13] Kun iharu Ko jim a,Shuich i Iguch i,Yo sh ih iro Kajim a et al..J.App lied Polymer Science[J],1983,28:87—95 [14] Kann iappan E.P.,Panduranga R.K.,Jo seph K.T..J.Polymer Science:Po lym er Letters Edition[J],1980,18:59—65 [15] LIU Shi-Yong(刘世勇),JIANG Ming(江　明).Chem.J.Ch inese Universities(高等学校化学学报)[J],2001,22(6):1 066—1 072 [16] CH EN You-Qiang(陈友强).App lied Chem istry(应用化学)[J],2000,17(4):453—455 [17] Fon seca M.J.,JuvéA.,Lorincz Z.et al..J.Co llo id and In terface Science[J],1998,205:141—148 [18] Ko tov N.A.Nano structured Materials[J],1999,12:789—796 [19] Yo sh inari Taguch i,Natsukaze Saito,Isao Kim ura et al..Co llo ids and SurfacesA:Physiochem ical and Engineering Aspects[J],1999,153:401—404 [20] LüXin,Xu Xin,Wang Nanqin et al..Chem ical Physics Letters[J],1998,291:445—452 [21] YAN Dong-Sheng(严东升),FENG Duan(冯　端).The New Material Star(材料新星)[M],Hunan:Science Press,1998:55—70 [22] Robson Fernades de Farias.Thermoch im ica Acta[J],2001,376:63—66 [23] Mamoru Senna.Materials Science and Engineering A[J],2001,304-306:39—44 [24] ZHU Hui(朱　惠),LIU Shi-Yong(刘世勇),PAN Quan-Ming(潘全名)et al..Chem.J.Ch inese Universities(高等学校化学学报)[J],2002,23(1):138—142 [25] Mutsumi Kim ura,Hiroyuk i Uek i,Kazuch ika Oh ta et al..Langm uir[J],2002,18:7 683—7 687 [26] Hideyuki Tagaya,Kazum asa Takesh i,Kenusuke Ara et al..Materials Research Bulletin[J],1995,30(9):1 161—1 171 [27] Kittle Paule A..U S Paten t 4 034 129[P] ,1977