1、Designation: D5594 98 (Reapproved 2012)Standard 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 the design
2、ation 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 infrared
3、 procedures for deter-mining the vinyl acetate content of EVA copolymers usingpressed films (Procedure A) or molded plaques (Procedure B)and internal corrections for sample thickness.1.2 This test method is applicable to the analysis of EVAcopolymers containing 0.5 to 55 % vinyl acetate except asspe
4、cified in 1.3.1.3 Talc interferes with the 1020 cm1vinyl 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 AVERAGE PERCEN
5、T 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 “PEAKHEIGHT
6、 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 98 (2012)6A2. SUMMARY OF PYROLYSIS TITRATION AND SAPONIFICATION DATA FOR EVA COPOLYMER REFERENCEMATERIALSASTM
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8、rely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand
9、 should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on
10、 Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at
11、 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).TABLE A2.1 Summary of Pyrolysis Titration and Saponification Data for EVA
12、 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 0.32+0Lab 2 x 0.61 0.87 2.72 4.07 4.70 5 9.33 14.86
13、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 0.127 0.040 0.074 0.233 0.100 0.269(DuPont) CV 4.22 13.71 1.91 1
14、.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 28.03sx0.079 0.100 0.043 0.053 0.049 0.052 0.064 0.195 0.235 0.288CVx11.29 10.10 1.55 1.28 1.03 0.89 0.68 1.32 1.25 1.03D5594 98 (2012)7
