聚双环戊二烯的共聚改性及其性能调控  

Copolymerization modification of polydicyclopentadiene and its property regulation

作　　者：郭松 胡贵宝 杨维成 段高坤 乔拟春 刘建 罗勇 GUO Song;HU Guibao;YANG Weicheng;DUAN Gaokun;QIAO Nichun;LIU Jian;LUO Yong(Shanghai Research Institute of Chemical Industry Co.,Ltd.,Shanghai 200062,China;Shanghai Key Laboratory of Catalysis Technology for Polyolefins,Shanghai 200062,China;State Key Laboratory of Polyolefins and Catalysis Materials,Shanghai 200062,China;Shanghai Huayi(Group)Company,Shanghai 200040,China)

机构地区：[1]上海化工研究院有限公司,上海200062 [2]上海市聚烯烃催化技术重点实验室,上海200062 [3]聚烯烃催化技术与高性能材料国家重点实验室,上海200062 [4]上海华谊(集团)公司,上海200040

出　　处：《精细化工》2022年第3期548-553,568,共7页Fine Chemicals

基　　金：上海市科委自然科学基金(21ZR1480700)。

摘　　要：2-甲基-2-丙烯酸-2[(2,3,3A,4,7,7A-六氢-4,7-亚甲基-1氢-茚基)氧]乙酯(DCPEMA)与双环戊二烯(DCPD)经开环易位聚合反应制备了共聚物,对聚合工艺进行了考察,采用FTIR对其结构进行了表征,探讨了n(DCPD)∶n(DCPEMA)对共聚物表面亲水性、力学性能及玻璃化转变温度(T_(g))的影响。结果表明,DCPEMA通过打开烯烃双键的方式与DCPD生成共聚物。随着DCPEMA用量的增加,共聚物的静态水接触角、拉伸强度和T_(g)逐渐降低,断裂伸长率和溶胀率呈先升高后下降的趋势。共聚物的静态水接触角、拉伸强度由聚双环戊二烯的110°和(64.5±2.3)MPa下降至43°和(9.1±1.5)MPa。当n(DCPD)∶n(DCPEMA)=2∶1时,共聚物的断裂伸长率达到最大,为68%±2%,拉伸强度为(14.1±3.4)MPa。A copolymer of 2-propenoic acid,2-methyl-2-[(2,3,3A,4,7,7A-hexahydro-4,7-methano-1H-indenyl)oxy]ethyl ester(DCPEMA)with dicyclopentadiene(DCPD)was prepared by ring-opening translocation polymerization.The polymerization process was investigated.The structure was characterized by FTIR.The effects of molar ratio of DCPD to DCPEMA on hydrophilicity,mechanical properties and glass transition temperature(T_(g))of copolymer were investigated.The results showed that DCPEMA formed copolymer with DCPD by opening the olefin double bond.With the increase of dosage of DCPEMA,the static water contact angle,tensile strength and T_(g) of copolymer decreased gradually,and the breaking elongation and swelling ratio increased first and then decreased.The static water contact angle and tensile strength of the copolymer decreased from 110°and(64.5±2.3)MPa to 43°and(9.1±1.5)MPa.The maximum breaking elongation and tensile strength of the copolymer with n(DCPD)∶n(DCPEMA)=2∶1were 68%±2%and(14.1±3.4)MPa,respectively.

关 键 词：聚双环戊二烯 无规则共聚物 表面改性 亲水性 功能材料 

分 类 号：TQ322.3[化学工程—合成树脂塑料工业]