摘要
环烯烃聚合物具有高耐热性、高韧性、高透明性和高尺寸稳定性,已成为玻璃材料的理想替代品,并在光学和医疗领域展现出广泛的应用前景。为了揭示环烯烃聚合物化学结构与性能之间的内在联系,为新材料的研发与定制奠定基础,通过体视显微镜、接触角测试仪、紫外-可见分光光度计、凝胶渗透色谱仪、傅里叶变换红外光谱仪、热重分析仪、差示扫描量热仪、核磁共振波谱仪等对两种典型的环烯烃聚合物材料—环烯烃共聚物(COC)和环烯烃均聚物(COP)的性质进行了详细的对比。结果显示,COP的透光率比COC高,COP疏水性比COC的强,COC的重均分子量和数均分子量比COP的大,分子量分布稍宽;COP的红外特征吸收峰在920 cm^(-1)和815 cm^(-1)处,COC的红外特征吸收峰在1141,773,715 cm^(-1)处;COC和COP的初始分解温度和最大分解温度基本一致,且表现出一个玻璃化转变温度,没有熔融峰的出现,这说明COC和COP都是无定形的;核磁共振碳谱显示COC的化学位移δ在32~36以及46.5~50处出现特征峰,而COP的化学位移δ在51~52和46处出现特征峰。
Cycloolefin polymers have high heat resistance,high toughness,high transparency and high dimensional stability,making them an ideal substitute for glass materials,and show a wide range of applications in the optical and medical fields.In order to reveal the intrinsic connection between the chemical structure and properties of cyclic olefin polymers,and to lay the foundation for the development and customization of new materials,the properties of two typical cyclic olefin polymer materials,cyclic olefin copolymer(COC)and cyclic olefin polymer(COP)were compared in detail by means of stereo microscope,contact angle tester,UV-visible spectrophotometer,gel permeation chromatography,fourier transform infrared spectrometry,thermogravimetric analysis,differential scanning calorimetry,and nuclear magnetic resonance spectrometry.The results show that the transmittance of COP is slightly better than that of COC.The hydrophobicity of COP is stronger than that of COC.The weight-average molecular weight and number-average molecular weight of COC are larger than that of COP,and the molecular weight distributions of COC are slightly broader than that of COP.The fourier transform infrared spectra show that the fingerprint characteristic peaks of COP are 920 cm^(-1)and 815 cm^(-1),and the fingerprint characteristic peaks of COC are 1141,773,715 cm^(-1).The initial decomposition temperature and the maximum decomposition temperature of COC and COP are similar.A glass transition temperature without melting peak are showed,which indicates that COC and COP are amorphous.The^(13)C nuclear magnetic resonance spectra show the characteristic peak of COC are 32-36 and 46.5-50,while the characteristic peak of COP are 51-52 and 46.
作者
郭融
赵帮岭
付鹏
刘海洪
张赛扬
GUO Rong;ZHAO Bangling;FU Peng;LIU Haihong;ZHANG Saiyang(School of Basic Medical Science,Zhengzhou University,Zhengzhou 450001,China;School of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450001,China)
出处
《工程塑料应用》
CAS
CSCD
北大核心
2024年第10期130-135,共6页
Engineering Plastics Application
关键词
环烯烃共聚物
环烯烃均聚物
光线透过率
分子量及分布
红外光谱
核磁共振波谱
cyclo olefin copolymer
cyclo olefin polymer
light transmittance
molecular weight and distribution
infrared spectra
nuclear magnetic resonance spectrum
作者简介
通信作者:张赛扬,博士,教授,研究方向为肿瘤药物化学、药理学及药品包装材料。
