Synthesis and characterisation of novel functional polyolefin containing sulfonic acid groups
Synthesis and characterisation of novel functional polyolefin containing sulfonic acid groups
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新型含磺酸基功能聚烯烃的合成与表征
DOI：
10.1016/j.eurpolymj.2007.11.017
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发表时间：
2008-02
影响因子：
6
通讯作者：
Yi Zheng
中科院分区：
文献类型：
--
作者：
Yanguo Li;Li Pan;YueSheng Li;Yi Zheng
以氯磺酸为氯磺化剂，在1,1,2,2-四氯乙烷中进行氯磺化反应，然后水解，成功地将强极性基团磺酸引入乙烯/烯丙苯共聚物中，使其不发生降解或交联。通过改变共聚物中氯磺酸与悬垂苯基的比例，可以很容易地控制磺化程度。1h NMR和1h COSY光谱分析明确了磺化共聚物的微观结构，表明磺化反应全部发生在芳环的对位。采用差示扫描量热法（DSC）和热重分析（TGA）研究了其热行为。DSC数据显示熔融温度随DS升高有系统的趋势。磺化共聚物的TGA数据表明，与接收到的共聚物相比，磺化共聚物的降解温度从444℃提高到460℃。磺化共聚物在约261°C时还会出现额外的小质量损失，这在所接收的共聚物中没有观察到。通过接触角测试，对磺化共聚物的润湿性能进行了评价，发现其表面亲水性显著提高。
The strong polar group, sulfonic acid, has successfully been introduced into ethylene/allylbenzene copolymers without degradation or crosslinking via chlorosulfonation reaction with chlorosulfonic acid as a chlorosulfonating agent in 1,1,2,2-tetrachloroethane followed by hydrolysis. The degree of sulfonation (DS) can be easily controlled by changing the ratio of chlorosulfonic acid to the pendant phenyls of the copolymer. The microstructure of sulfonated copolymers were unambiguously revealed by1H NMR and1H–1H COSY spectral analyses, which indicates that all the sulfonation reactions exclusively took place at the para-position of the aromatic rings. The thermal behaviors were studied by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). DSC data exhibit a systematic trend of melting temperature increasing with DS. TGA data of sulfonated copolymers show an increase in degradation temperature from 444 to 460°C compared to the received copolymer. Sulfonated copolymers also show an additional minor loss of mass at approximately 261°C, which is not observed in the received copolymer. The wetting properties of the sulfonated copolymers were also evaluated by contact angle measurement, and a notable increase in surface hydrophilicity was identified.
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DOI：
10.1002/pola.11064
发表时间：
2004-03
期刊：
Journal of Polymer Science Part A
影响因子：
--
作者：
S. Lipponen;J. Seppälä
通讯作者：
S. Lipponen;J. Seppälä
影响因子：
15
作者：
Boone, HW;Athey, PS;Goddard, WA
通讯作者：
Goddard, WA
影响因子：
4.6
作者：
Mokrini, A;Acosta, JL
通讯作者：
Acosta, JL
影响因子：
5.5
作者：
Y. Nam;T. Shiono;T. Ikeda
通讯作者：
Y. Nam;T. Shiono;T. Ikeda
DOI：
10.1002/pola.21755
发表时间：
2007-01
期刊：
Journal of Polymer Science Part A
影响因子：
--
作者：
B. Lafitte;P. Jannasch
通讯作者：
B. Lafitte;P. Jannasch