1、Designation: D5594 98 (Reapproved 2012)D5594 18Standard Test Method forDetermination of the Vinyl Acetate Content of Ethylene-VinylAcetate (EVA) Copolymers by Fourier Transform InfraredSpectroscopy (FT-IR)1This standard is issued under the fixed designation D5594; the number immediately following th
2、e designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers
3、infrared procedures for determining the vinyl acetate content of EVA copolymers using pressedfilms (Procedure A) or molded plaques (Procedure B) and internal corrections for sample thickness.1.2 This test method is applicable to the analysis of EVA copolymers containing 0.5 to 55 % vinyl acetate exc
4、ept as specifiedin 1.3.1.3 Talc interferes with the 1020 cm1 vinyl acetate band. Resins containing SCBfor iii=1 TIL3XSP=620XEP=560PAU.PRESS .THEN ENTER THICKNESS (MILS). PREES AGAINVF0VF1=YEPYSPVF1=VF1/VF0VFW=VF1 * SLOPE VALUEVF2=VF2 + Y-INTERCEPT VALUEPRN VF2VF3=VF2+VF2DSSNXT IIIVF3=VF3/3OMDTHE AVE
5、RAGE PERCENT VA IS.PRN VF3 ENDEVA Copolymers Containing 0.56 Vinyl AcetateCRT LVACR “% VINYL ACETATE RANGE: 06 %”cr “CLEAN BEAM TO TAKE BACKGROUND”PAUSCBFOR IIICR “INSERT SAMPLE”PAUSCS RAS ABS DSSSXP=2100 XEP=1910ASS VF0=YEPYSPXSP=1040 XEP=970ASS VF1=YEPYSPVF2=VF1/VF0VF3=VF2 * 0.3648VF3=VF3+0.048CR
6、PEAKHEIGHT 1020/PEAK HEIGHT 2019”VF2=CR “PERCENT (%) VINYL ACETATE=”VF3=NXT IIIENDFIG. A1.1 Macros for Calculating Vinyl Acetate Content of EVA Copolymers from FT-IR Spectra Using Molded PlaquesD5594 187A2. SUMMARY OF PYROLYSIS TITRATION AND SAPONIFICATION DATA FOR EVA COPOLYMER REFERENCEMATERIALSA
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12、 Pyrolysis Titration and Saponification Data for EVA Copolymer Reference MaterialsI II III IV V VI VII VIII IX XLab 1 x 0.68 1.11 2.80 4.15 4.78 5.84 9.34 14.54 18.46 27.62Pyrolysis S 0.038 0.018 0.045 0.115 0.078 0.111 0.140 0.201 0.071 0.088(DuPont) CV 5.59 1.62 1.61 2.77 1.63 1.90 1.50 1.38 0.38
13、0.32 + + + + 0 Lab 2 x 0.61 0.87 2.72 4.07 4.70 5 9.33 14.86 18.90 28.05Pyrolysis s 0.003 0.022 0.014 0.022 0.042 0 0.024 0.073 0.468 0.060(Toyo Soda) CV 0.49 2.53 0.51 0.54 0.89 1 0.26 0.49 0.25 0.21 + Lab 3 x 0.71 0.97 2.77 4.10 4.73 5.81 9.33 14.91 18.78 28.18Pyrolysis s 0.030 0.133 0.053 0.080 0
14、127 0.040 0.074 0.233 0.100 0.269(DuPont) CV 4.22 13.71 1.91 1.95 2.68 0.69 0.79 1.56 0.53 0.95+ + 0 +Lab 4 x 0.80 1.02 2.82 4.19 4.81 5.92 9.46 14.98 19.00 28.27Saponification S 0.042 0.046 0.052 0.059 0.049 0.067 0.059 0.061 0.072 0.089CV 5.25 4.51 1.84 1.41 1.02 1.13 0.62 0.41 0.38 0.31+ + + + + + + + + +x 0.70 0.99 2.78 4.13 4.76 5.84 9.36 14.82 18.78 28.03sX 0.079 0.100 0.043 0.053 0.049 0.052 0.064 0.195 0.235 0.288CVX 11.29 10.10 1.55 1.28 1.03 0.89 0.68 1.32 1.25 1.03D5594 188
