CAJ | 학술논문

通过在聚对苯二甲酸乙二酯和聚萘二甲酸乙二酯的共混体系中加入不同种类、不同含量的热稳定剂或酯交换阻止剂，在300℃左右，经不同时间的熔融共混后取样，再经DSC、NMR测试观察，发现所使用的化学试剂不能阻止酯交换反应的发生，酯交换反应程度与所加化学试剂的种类、含量基本无关，而随熔融共混时间的缩短而受到抑制。
통과재취대분이갑산을이지화취내이갑산을이지적공혼체계중가입불동충류、불동함량적열은정제혹지교환조지제，재300℃좌우，경불동시간적용융공혼후취양，재경DSC、NMR측시관찰，발현소사용적화학시제불능조지지교환반응적발생，지교환반응정도여소가화학시제적충류、함량기본무관，이수용융공혼시간적축단이수도억제。
PET／PEN melt blended samples were prepared under various processing conditions．Effect of such factors，i．e．the kind of chemical stabilizaer，the content of the stabilizer and blending time on the transesterification level in the blended samples was studied by means of nuclear magnetic resonance（NMR） spectroscopy and differential scanning calorimitry（DSC）．Results indicated that the transesterification reaction was significantly inhibited by shortening the melt blending time，but the influence of both the kind and content of stabilizer on the ester change reaction was negligible．