一种具有网状结构聚苯乙烯聚氨酯的合成及表征

Synthesis and Characterization of a Novel Network Poly(Styrene-Urethane)

将聚对羟甲基苯乙烯用异佛尔酮二异氰酸酯(IPDI)交联,制备了一种具有网状结构的聚苯乙烯聚氨酯,并用核磁共振法(1H-NMR),红外分析法(FT-IR)对其结构作了表征。用差示扫描量热法(DSC),热失重法(TGA/DTG)测定了其热分解性质,发现聚合物具有良好的热稳定性,增大IPDI的含量,聚合物的热分解温度提高。DSC和扫描电镜(SEM)测试表明,增大IPDI的含量也使聚合物微相分离程度提高。对聚合物进行紫外光照射和微生物催化水解,发现聚合物具有光降解和生物降解性。

Poly（p-hydromethylstyrene） was crosslinked by isophorone diisocyanate（IPDI） as erosslinker to prepare a novel network poly （styrene-urethanes） and the crosslinkablepolymers were characterized by hydrogen nuclear magnetic resonance spectrum （^1H-NMR）, Fourier transform infrared spectroscopic （FT-IR）. The differential scanning calorimetry（DSC）, thermogravimetry（TGA/DTG） analytic results show that the poly（styrene-urethanes） have good thermal stability, moreover the thermal decomposition temperature of the poly （styrene-urethanes） increases with increasing IPD1 content. It has been shown from DSC and scanning electron microscope （SEM） measurements that the extent of microphase separation in the poly（styrene-urethanes） increases with increasing IPDI content. The ultraviolet（UV） light irradiation and hydrolysis catalyzed by microorganism tests reveal that the poly （styrene-urethanes） have photodegradability and biodegradability.