十二烯基琥珀酸纳米纤维素酯的合成制备与结构表征

Synthesis and Structure Characterization of Dodecenyl Succinic Anhydride-modified Cellulose Nanofibrils

中文关键词:  十二烯基琥珀酸酐  纤维素纳米纤丝  酯化改性  水接触角

Key Words:dodecenyl succinic anhydride  cellulose nanofibrils  esterification modification  water contact angle

中文摘要:

      以纤维素纳米纤丝（CNFs）和十二烯基琥珀酸酐（DDSA）为原料，采用湿法工艺成功制备了十二烯基琥珀酸纳米纤维素酯（D-CNFs），采用傅里叶变换红外光谱（FT-IR）、Zeta电位、热重（TG）、水接触角和X射线衍射（XRD）等对D-CNFs的结构进行表征。结果表明，D-CNFs的最佳制备工艺条件为：反应体系温度、反应体系pH值、反应时间分别为40℃、8.5、6 h。制得的D-CNFs水接触角为83.2°，热稳定性良好，可形成体系稳定的悬浮液，为其今后在食品、医药等领域的应用提供更多的选择性，具有潜在的应用价值。

Abstract:

      In this study， cellulose nanofibrils （CNFs） and dodecenyl succinic anhydride （DDSA） were used as raw materials to prepare dodecenyl succinic anhydride-modified cellulose nanofibrils （D-CNFs） by the wet processing， and the structure of D-CNFs were characterized by FT-IR， Zeta-potential， TG， water contact angle， and XRD. The results showed that the optimal conditions for preparing D-CNFs were reaction temperature， pH value， and reaction time of 40℃， 8.5， and 6 h， respectively. The as-prepared product was of a water contact angle of 83.2° and good thermal stability， forming a stable suspension system which could provide more selectivity for its future applications in food， medicine， and other fields， possessing potential application value.