【作者】 褚艳红； 张国宝； 赵根锁； 余守志； 王经武；

【Author】 CHU Yan-hong~1 ZHANG Guo-bao~1 ZHAO Gen-suo~1 YU Shou-zhi~1 WANG Jing-Wu~2 1.The Province of Henan Analysis and Testing Center,Zhengzhou 450002,China 2.The College of Material Science and Engineering,Zhengzhou University,Zhengzhou 450052,China

【机构】 河南省分析测试中心； 郑州大学材料科学与工程学院；

【摘要】 采用变温FTIR光谱法研究了原料PET和PET/nano-CaCO₃（MPET）复合材料体系自40～250℃之间逐渐升温过程中,PET基体的固态转变。通过研究PET的内标谱带1 410 cm^-1与结晶相关谱带1 342 cm^-1吸光度之比值随温度变化的关系曲线,结合其在同样条件下的差热扫描（DSC）曲线.分析了纳米CaCO₃粒子的加入对PET固态转变和结晶相关谱带的影响。结果表明,纳米CaCO₃粒子的加入显著改善了PET的结晶和熔融行为。更多还原

【Abstract】 In this paper,solid state transformation of crude poly （ethylene terephthalate）（PET） and PET/nano-CaCO₃ （MPET） composites were researched by variable temperature FTIR spectroscopy during heating process from 40 to 250℃.The effects of nanometer calcium carbonate（nano-CaCO₃） on the solid state transformation and crystal correlation bands of MPET composites were analyzed by the curves of the ratio of 1 342 and 1 410 cm^-1 absorbency(A₁₃₄₂/A₁₄₁₀) with temperature increasing,and to- gether with DSC curves in the same condition.The results showed that the crystallization degrees of crude PET and MPET were obvious different in this condition by adding nano-CaCO₃ particles as inhomogeneous nucleating agents.更多还原