Studies on polyimide imidization in far‐infrared radiation
Studies on polyimide imidization in far‐infrared radiation
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DOI：
10.1002/polb.20655
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发表时间：
2005-12
期刊：
影响因子：
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通讯作者：
Yun Lu;M. Zhan
中科院分区：
文献类型：
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作者：
Yun Lu;M. Zhan
本文以N，N-二甲基乙酰胺(DMAc)为溶剂，以4，4‘-二苯氧基苯酐(ODPA)、3，3’，4，4‘-联苯二酸酐(BPDA)、3，4’-氧二苯胺(3，4‘-ODA)和4，4’-氧二苯胺(4，4‘-oda)为原料，采用两步法合成了聚酰亚胺(PI)或共聚聚酰亚胺(co-PI)。为了控制聚酰亚胺的相对分子质量，采用邻苯二甲酸酐(PA)作为封端剂。用傅里叶变换红外光谱(FTIR)研究了远红外辐射对聚酰亚胺(PI)亚胺化的影响。讨论了PI亚胺化时间和温度、分子结构、设计数均相对分子质量、结晶、亚胺化过程、膜厚、聚酰胺酸(PAA)固含量等因素对FIR中亚胺化过程的影响。在FIR中，PI亚胺化过程将受到所有这些因素的影响。©2005 Wiley期刊公司J Polym Sci第B部分：Polym Phys 43：3621-3627,2005
In this paper, the monomers 4,4′-oxydiphthalic anhydride (ODPA), 3,3′,4,4′-biphenyl dianhydride (BPDA), 3,4′-oxidianiline (3,4′-ODA), and 4,4′-oxidianiline (4,4′-ODA) were selected to synthesize polyimides (PI) or copolyimides (co-PI) in N,N-dimethyl acetamide (DMAc) by two-step method. To control the PI molecular weight (MW), phthalic anhydride (PA) was used as the end-capping reagent. The effect of far-infrared radiation (FIR) on PI imidization was investigated by Fourier transform infrared spectroscopy (FTIR). Some factors affecting imidization process in FIR were discussed, including PI imidization time and temperature, molecular structure, designed number average molecular weight, crystalline, imidization procedure, film thickness, polyamide acid (PAA) solid content, and so forth. The PI imidization process in FIR will be affected by all these factors. © 2005 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 43: 3621–3627, 2005