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变温FTIR光谱法研究PET/纳米CaCO3复合材料的固态转变

Study on the Solid State Transformation of PET/Nano-CaCO3 Composites by Variable Temperatnre FTIR Spectroscopy

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【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。

【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.

【基金】 河南省自然科学基金项目(0611020800);河南省科技攻关项目(0524270027)资助
  • 【会议录名称】 第十五届全国分子光谱学术报告会论文集
  • 【会议名称】第十五届全国分子光谱学术报告会
  • 【会议时间】2008-10
  • 【会议地点】中国北京
  • 【分类号】TB332
  • 【主办单位】中国光学学会、中国化学学会
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