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Emulsion polymerization of m-chloroaniline and characterization of macromolecular chain structure

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间氯苯胺的乳液聚合及聚合物链结构表征.pdf (158.8Kb)
Date
2002
Author
Dai, LZ
戴李宗
Xu, YT
许一婷
Zou, YS
邹友思
Wu, HH
吴辉煌
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  • 化学化工-已发表论文 [14469]
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Abstract
this work poly-m-chloroaniline(PmClAn) was synthesized by emulsion polymerization. By discussing the influences of reaction temperature and concentrations of initiator on the polymerization reaction, it was found that PmClAn with mean molecular weight of 1.85 X 10(3) (corresponding to 15 chain elements) could be obtained under the following conditions. 80 degreesC, [M]= 0.187 mol/L, [SDS] = 4. 8 X 10(-2) mol/L, [KPS] = 5.6X10(-2) mol/L(where M, SDS and KPS stand for monomer, emulsifier and initiator K2S2O8, respectively), reaction period 2.5 h. From H-1 NMR, FTIR, TEM and SEM measurements the structure of PmClAn was determined. It was found that in the macromolecular chain the ratio of benzoid to quinold units was 3 : 2, and that PmClAn was characterized by its typical molecular crystalline being monoclinic with crystall-cell parameters of a=0.679 nm, b=2.304 nm, c=0.573 4 nm, alpha = 90degrees, beta = 100.9degrees and gamma = 90degrees. By using MM+ molecular mechanics methode in Hyper Chem program, X-ray diffraction data were analyzed, thereby the configuration of PmClAn chain was determined and optimized.
Citation
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2002,23(3):514-516
URI
https://dspace.xmu.edu.cn/handle/2288/12441

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