CAJ | 학술논문

用IR光谱法测定聚碳酸亚丙酯样品中的环状小分子杂质碳酸亚丙酯。发现该杂质的质量分数与1/（A1 180/A1 250＋1）呈线性关系（A1 180和A1 250分别为波数1 180 cm－1和1 250 cm－1处的吸光度)；标准偏差为0.011；回归系数为0.999 2。该法用以代替1H NMR法，可以较简单地给出可靠结果，满足常规测试的要求。
용IR광보법측정취탄산아병지양품중적배상소분자잡질탄산아병지。발현해잡질적질량분수여1/（A1 180/A1 250＋1）정선성관계（A1 180화A1 250분별위파수1 180 cm－1화1 250 cm－1처적흡광도)；표준편차위0.011；회귀계수위0.999 2。해법용이대체1H NMR법，가이교간단지급출가고결과，만족상규측시적요구。
Procedures were suggested for IR determination of the quantities of cyclic carbonate in poly(propylene carbonate) samples. It was found that the mass fraction of the cyclic carbonate is linearly correlated with 1/(A1 180 /A1 250＋1), where A1 180 and A1 250 are the absorbancy of the samples at 1 180 cm－1 and 1 250 cm－1. The standard deviation of the method is 0.011, and the regression coefficient is 0.999 2. The method is simple, reliable and may be used instead of 1H NMR.