Thermal Imidization Process of Electrospun Poly(amic acid) Film Studied by In-situ FTIR†

doi:10.7503/cjcu20140450

Abstract

Abstract:

Polyamic acid(PAA) solution based on 4,4'-diaminodiphenyl ether(ODA) and pyromelliticdianhydride(PMDA) was prepared and electrospun into PAA nanofiber films. In-situ Fourier transform infrared(FTIR) spectroscopy was used to study the progress of imidization. Through applying the optimized condition of imidization, a polyimide film was obtained with 100% of imidization degree. The results show that lower heating rate(2 ℃/min) leads to a 100% of imidization degree; PAA nanofiber films exhibited lower imidization degree under the faster rate. A new fast-slow heating rate method can improve the imidization efficiency.

Key words: Polyimide, Nanofiber film, Imidization degree, Electrospinning, In-situ FTIR spectrum

CLC Number:

O631

TrendMD:

YU Xiaohui, ZHANG Wenpeng, CAO Jianhua, JIANG Shidong, WU Dayong. Thermal Imidization Process of Electrospun Poly(amic acid) Film Studied by In-situ FTIR^†[J]. Chem. J. Chinese Universities, 2014, 35(10): 2246.

Figures/Tables 11

References 28

[1]	Ding M.X., He T. B., The Novel Material of Polyimide, Science Press, Beijing, 1998, 187—191
	(丁孟贤, 何天白. 聚酰亚胺新型材料, 北京: 科学出版社, 1998, 187—191)
2	[2] Sun J. P., Wu H. C., Ying Z. J., Chem. J. Chinese Universities,2004, 25(2), 372—375
	(孙建平, 吴洪才, 应祖金. 高等学校化学学报, 2004, 25(2), 372—375)
[3]	Yoshio I., Rikio Y., Polyimides Fundamental and Application, NTS Inc. Press, Tokyo, 2002, 173—183
[4]	Meyer G. W., Pak S. J., Lee Y. J., McGrath J. E., Polymer,1995, 36(11), 2303—2309
[5]	Yu X. H., Zhao X. G., Liu C. W., Bai Z. W., Wang D. M., Dang G. D., Zhou H. W., Chen C. H., J. Polym. Sci., Part A: Polym. Chem., 2010, 48(13), 2878—2884
[6]	Wang S., Zhou H. W., Dang G. D., Chen C. H., J. Polym. Sci., Part A: Polym. Chem., 2009, 47(8), 2024—2031
[7]	Wang Y. L., Yu X. H., Wang L. N., Jia H., Dang G. D., Chem. J. Chinese Universities,2012, 33(10), 2356—2360
	(王运良, 于晓慧, 王丽娜, 贾赫, 党国栋. 高等学校化学学报, 2012, 33(10), 2356—2360)
[8]	Yu X. H., Zhao X. G., Liu C. W., Dang G. D., Wang Y. L., Zhou H. W., Chem. J. Chinese Universities,2009, 30(11), 2297—2300
	(于晓慧, 赵晓刚, 刘长威, 党国栋, 王运良, 周宏伟. 高等学校化学学报, 2009, 30(11), 2297—2300)
[9]	Bhat G. S., Schwanke R., J. Therm. Anal. Calorim., 1997, 49(1), 399—405
[10]	Ding M.X., Polyimides: Chemistry, Relationship Between Structure and Properties and Materials, Science Press, Beijing, 2006, 2—7
	(丁孟贤. 聚酰亚胺—化学、结构与性能的关系及材料, 北京: 科学出版社, 2006, 2—7)
[11]	Feger C., Khojasteh M.M., McGrath J. E., Polyimides, Materials, Chemistry and Characterization, Elsevier, New York, 1988, 363—369
[12]	Greiner A., Wendorff J.H., Angew. Chem. Inter. Ed., 2007, 46(30), 5670—5703
[13]	Li D., Xia Y. N., Nano Lett., 2004, 4(5), 933—938
[14]	Li D., Xia Y. N., Adv. Mater., 2004, 16(14), 1151—1170
[15]	Wang H. Y., Wu D. Y., Li D. Z., Niu Z. W., Chen Y. Z., Tang D. H., Wu M., Cao J. H., Huang Y., Nanoscale,2011, 3, 3601—3604
[16]	Cao J. H., Yu X. H., Tang D. H., Wu M., Wu D. Y., Scientia Sinica Chimica,2014, 44(7), 1125—1149
	(操建华, 于晓慧, 唐代华, 吴敏, 吴大勇. 中国科学: 化学, 2014, 44(7), 1125—1149)
[17]	Wang S. Y., Li M., Gong G. M., Wang J. M., Wu J. T., Jiang L., Chem. J. Chinese Universities,2012, 33(5), 1090—1094(王姝瑛, 李敏, 龚光明, 王景明, 吴俊涛, 江雷. 高等学校化学学报, 2012, 33(5), 1090—1094)
[18]	Huang C. B., Wang S. Q., Zhang H. A., Li T. T., Chen S. L., Lai C. L., Hou H. Q., Eur. Polym. J., 2006, 42(5), 1099—1104
[19]	Shin T. J., Ree M., Langmuir,2005, 21, 6081—6085
[20]	Li W. S., Shen Z. X., Zheng J. Z., Tang S. H., Appl. Spectrosc., 1998, 52(7), 985—989
[21]	Ding M.X., Polyimides: Chemistry, Relationship Between Structure and Properties and Materials, Science Press, Beijing, 2006, 75
	(丁孟贤. 聚酰亚胺—化学、结构与性能的关系及材料, 北京: 科学出版社, 2006, 75)
[22]	Xu Y. K., Zhan M. S., Wang K., J. Polym. Sci., Part B: Polym. Phys., 2004. 42(13), 2490—2501
[23]	Saeed M.B., Zhan M. S., Eur. Polym. J., 2006. 42(8), 1844—1854
[24]	Saini A. K., Carlin C. M., Patterson H. H., J. Polym. Sci., Part A: Polym. Chem., 1992, 30(3), 419—427
[25]	Ikeda S., Akamatsu K., Nawafune H., Nishino T., Deki S., J. Phys. Chem. B,2004, 108(40), 15559—15607
[26]	Cheng S., Li X. F., Xie S. B., Chen Y., Fan L. J., J. Colloid Interface Sci., 2011, 356, 92—99
[27]	Huang P., Geng H. B., Cheng R., Wang X. D., Shi J., Acta Polymer Sinica,2004, 1(2), 256—262
	(黄培, 耿洪斌, 程茹, 王晓东, 时钧. 高分子学报, 2004, 1(2), 256—262)
[28]	Diaham S., Locatelli M. L., Lebey T., Malec D., Thin Solid Films,2011, 519(6), 1851—1856

Method	T₁/r/t'	T₂/r/t'	T₃/r/t'	T₄/r/t'	T₅/r/t'	T₆/r/t'	T₇/r/t'	t
C1	30—150/10/5	150—200/10/30	200—250/10/30	250—300/10/30	300—350/10/60			192
C2	30—150/2/5	150—200/2/5	200—250/2/5	250—300/2/5	300—350/2/5	350—400/2/	400—450/2/5	250
C3	30—150/10/5	150—200/10/5	200—250/10/5	250—300/10/5	300—350/10/5	350—400/10/5	400—450/10/5	82
C4	30—150/10/5	150—200/10/30	200—250/2/5	250—300/2/5	300—350/2/5	350—400/2/5	400—450/2/5	122
C5	30—150/10/5	150—200/10/15	200—250/10/15	250—300/10/15	300—350/10/30			117

Method	T₁/r/t'	T₂/r/t'	T₃/r/t'	T₄/r/t'	T₅/r/t'	T₆/r/t'	T₇/r/t'	t
C1	30—150/10/5	150—200/10/30	200—250/10/30	250—300/10/30	300—350/10/60			192
C2	30—150/2/5	150—200/2/5	200—250/2/5	250—300/2/5	300—350/2/5	350—400/2/	400—450/2/5	250
C3	30—150/10/5	150—200/10/5	200—250/10/5	250—300/10/5	300—350/10/5	350—400/10/5	400—450/10/5	82
C4	30—150/10/5	150—200/10/30	200—250/2/5	250—300/2/5	300—350/2/5	350—400/2/5	400—450/2/5	122
C5	30—150/10/5	150—200/10/15	200—250/10/15	250—300/10/15	300—350/10/30			117

Method	Imidization degree(%)	Time/min	Efficiency(%)
C1	70.8	192	0.37
C2	100.0	190	0.53
C3	62.4	62	1.01
C4	85.0	122	0.70
C5	63.0	117	0.54

Method	Imidization degree(%)	Time/min	Efficiency(%)
C1	70.8	192	0.37
C2	100.0	190	0.53
C3	62.4	62	1.01
C4	85.0	122	0.70
C5	63.0	117	0.54