【等规聚苯乙烯的结晶现象研究】张俊.pdf
2000年5月31日(签字)论文答辩日期:指导教师
[421 [321Figure 1.Wide-angleX-ray diffraction curves ofiPSrecov ered from(A)ethyl benzoate,(B)butyl benzoate,(C)octyl Infrared spectra were taken usinganIFS66VFT-IR spectrometer.TheiPS/octadecyl benzoate gel withcon-centrationof20wt wasputintoacellwhichwas formedb
Communications to theEditor2301 observed,since2-3days areneeded togrowcrystals from solventsofsmall molarvolumesItisinteresting tofind that the crystallinity increasesrapidly when the solventmolarvolumechangedfrom140to300cm/mol, and thecrystallinityreachesanearly constantvalue whenthe solventislar🔒 下载高清完整版
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