CAJ | 학술논문

以己内酰胺为原料，无机酸为催化剂，水为开环引发剂，己二酸为稳定剂，合成了聚己内酰胺(PA6).探讨了不同聚合条件对尼龙-6聚合转化率的影响，及不同聚合条件对尼龙-6的软化温度的影响，并对产物进行了产率测算、软化温度测试和红外表征.研究表明，在反应温度240℃、反应时间3.5 h、己内酰胺和浓磷酸质量比为100：2、己内酰胺和己二酸质量比为100：3的聚合条件下，己内酰胺转化率可高达92.0%，所合成的聚合物粘均分子量为6.9×104 g/mol.
이기내선알위원료，무궤산위최화제，수위개배인발제，기이산위은정제，합성료취기내선알(PA6).탐토료불동취합조건대니룡-6취합전화솔적영향，급불동취합조건대니룡-6적연화온도적영향，병대산물진행료산솔측산、연화온도측시화홍외표정.연구표명，재반응온도240℃、반응시간3.5 h、기내선알화농린산질량비위100：2、기내선알화기이산질량비위100：3적취합조건하，기내선알전화솔가고체92.0%，소합성적취합물점균분자량위6.9×104 g/mol.
Polycaprolactam was synthesized via ring-opening polymerization using water as initiator. In the polymerization process, oxalic acid was adopted for stabilizer. The influences of polymerization condition on the conversion rate and softening temperature of resultant polymer were investigated. The optimal polymerization conditions were determined with the results of the conversion rate, softening temperature and infrared spectra of resultant polycaprolactam. Caprolactam conversion rate was up to 92% under the reaction temperature of 240 ℃when the ratios of the phosphoric acid and oxalic acid to caprolactam was 0.02 and 0.03, respectively, viscosity average molecular weight of resultant polymer was about 6.9 × 104 g/mol.